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[SOURCE: https://en.wikipedia.org/wiki/Postmedia_Network] \| [TOKENS: 2177]
Contents Postmedia Network Postmedia Network Canada Corp. (also known as Postmedia Network, Postmedia News or Postmedia) is an American-owned, Canadian-based media conglomerate consisting of the publishing properties of the former Canwest, with primary operations in English-language newspaper publishing, news gathering and Internet operations. It is best known for being the owner of the National Post and the Financial Post. It owns and operates over more than 130 print and digital news titles across Canada. The company's strategy has seen its publications invest greater resources in digital news gathering and distribution, including expanded websites and digital news apps for smartphones and tablets. This began with a revamp and redesign of the Ottawa Citizen, which debuted in 2014. Two-thirds, or 66%, of Postmedia is currently owned by American media conglomerate Chatham Asset Management. The company is headquartered at Postmedia Place on Bloor Street in Toronto. History The ownership group was assembled by National Post CEO Paul Godfrey in 2010 to bid for the chain of newspapers being sold by the financially troubled Asper family's Canwest (the company's broadcasting assets were sold separately to Shaw Communications). Godfrey secured financial backing from a U.S. private equity firm, the Manhattan-based hedge fund GoldenTree Asset Management—which owns 35 per cent—as well as IJNR Investment Trust, Nyppex and other investors. The group completed a $1.1 billion transaction to acquire the chain from Canwest on July 13, 2010. On October 6, 2014, Postmedia's CEO Godfrey announced a deal to acquire the English-language operations of Sun Media. The purchase received regulatory approval from the federal Competition Bureau on March 25, 2015, even though the company manages competitive papers in several Canadian cities; while the Sun Media chain owns numerous other papers, four of its five Sun-branded tabloids operate in markets where Postmedia already publishes a broadsheet competitor. Board chair Rod Phillips has cited the Vancouver market, in which the two main daily newspapers, the Vancouver Sun and The Province, have had common ownership for over 30 years, as evidence that the deal would not be anticompetitive. It also The purchase did not include Sun Media's now-defunct Sun News Network. The acquisition was approved by the Competition Bureau on March 25, 2015, and closed on April 13. In 2016, the company sought to restructure its compensation plans and reduce spending by as much as 20%, after reporting a net loss of $99.4 million, or 35 cents per diluted share, in the fourth-quarter ended Aug 31, compared with a $54.1 million net loss, or 19 cents per diluted share, in the same period a year earlier. This resulted in 90 newsroom staff losing their jobs. Also in 2016, it was announced that the newsrooms of newspapers in Ottawa, Calgary, Edmonton and Vancouver, where Postmedia owns competing newspapers, would be merged into one newsroom per location while continuing to print each newspaper. On November 27, 2017, Postmedia and Torstar announced a transaction in which Postmedia will sell seven dailies, eight community papers, and the Toronto and Vancouver 24 Hours to Torstar, in exchange for 22 community papers and the Ottawa and Winnipeg versions of Metro. Except for the Exeter Times-Advocate, St. Catharines Standard, Niagara Falls Review, Peterborough Examiner, and Welland Tribune, all acquired papers will be closed. On June 26, 2018, Canadian Press reported that, by the end of August, Postmedia will be closing the Camrose Canadian in Camrose, Alberta, Strathmore Standard in Strathmore, Alberta, Kapuskasing Northern Times in Kapuskasing, Ontario, Ingersoll Times in Ingersoll, Ontario, Norwich Gazette in Norwich, Ontario and Petrolia Topic in Petrolia, Ontario. It will also cease printing the Portage Daily Graphic in Portage La Prairie, Manitoba, the Northern News in Kirkland Lake, Ontario, and Pembroke Daily Observer in Pembroke, Ontario while maintaining a digital presence for the three publications. As well, the High River Times in High River, Alberta will go from being published twice a week to once a week. During the COVID-19 pandemic, Postmedia laid off approximately 80 employees and permanently closed 15 community publications while navigating the financial strain of COVID-19. While the company utilized government subsidies, they claim they were unable to offset the decline in revenue. Postmedia closed 15 community newspapers in Manitoba and Ontario’s Windsor-Essex area as the publications were no longer financially sustainable. The publications included Manitoba’s Altona Red River Valley Echo, Carman Valley Leader, Gimli Intertake Spectator, Morden Times, Selkirk Journal, Stonewall Argus & Teulon Times, Winkler Times, and The Prairie Farmer, leaving Portage La Prairie as the company’s community presence in the province. For Ontario, the closures included the Kingsville Reporter, Lakeshore News (Windsor-Essex area), LaSalle Post, Napanee Guide, Paris Star, Tecumseh Shoreline Week, and Tilbury Times. On February 17, 2022, Postmedia announced a definitive agreement to acquire Brunswick News Inc. (BNI). As well as several New Brunswick daily and weekly newspapers and "digital properties", BNI's assets included a parcel delivery business and "proprietary distribution software". In 2023, Postmedia announced it would be moving a dozen of its Alberta community papers to digital-only platforms, aiming for more outsourcing deals and laying off employees. The announcement was made January 18, 2023, during an internal memo to staff that was obtained by The Canadian Press, describing the measures as a part of a "transformation plan geared toward managing costs". Later that day, Postmedia said it had also sold the Calgary Herald building for $17.23 million to U-Haul Co. after trying to sell it for nearly a decade. In July 2023, Postmedia Network Canada Corp. and Nordstar Capital LP announced that merger discussion between the two newspaper publishers will not continue. On May 27, 2024, Postmedia announced that it would sell the Winnipeg Sun, the Portage la Prairie Graphic Leader, Kenora Miner and News, and company's Winnipeg printing operations to politician and former Sun publisher Kevin Klein. In July 2024, the company entered into an agreement to acquire SaltWire Network. During the first week of December 2024, Postmedia rebranded Saltwire as PNI Atlantic News, with their websites changing to look like the parent company's other newspapers. Operating branch Postmedia News is the news branch of Postmedia Network, providing similar content to all of its subsidiary news outlets and websites. It is identified as a source on all of its subsidiary newspapers. The news agency provides news, sports, entertainment, photography, financial and feature information and data to Postmedia Network's Canadian newspapers, online properties and a number of third party clients in Canada and the United States.[citation needed] Criticism In October 2018, in an opinion piece for National Observer, Davide Mastracci reported that CEO Andrew MacLeod had declared Postmedia's publication, the National Post, "insufficiently conservative". It was reported that in June 2019, Kevin Libin, who helped defeat a union drive at the National Post earlier that year, took the role of "executive editor (politics)" to "oversee or run federal political coverage in the Post as well as federal and provincial coverage in all of the chain’s metro daily broadsheets." Mastracci and Sean Craig of Canadaland argued this was to ensure the newspapers became more "'reliably' conservative." In November 2019, Postmedia announced that 66% of its shares were now owned by Chatham Asset Management, an American media conglomerate which owns American Media, Inc. and is known for its close ties to the Republican party. The creation of the Postmedia Network effectively concentrates more than 90 percent of all Canadian dailies and weeklies in one company, a fact lamented by J-Source, a Canadian media watchdog, in a 2015 online article. Margo Goodhand, a former Edmonton Journal editor-in-chief, wrote in a 2016 Walrus article that Postmedia executives were behind the outsourcing of Postmedia content to a site within an office in Canada for the sake of producing “Regina Leader-Post sports pages, Arts fronts for the Montreal Gazette, editorial pages for the Vancouver Sun”. In a 2020 article by The New York Times, it was reported journalists had attested that since Chatham Asset Management took over, Postmedia had centralized operations and cut staff so that its 106 newspapers were essentially clones of one another. On November 27, 2018, The Competition Bureau applied for a court evaluation contesting Postmedia's claims of solicitor-client privilege, for records seized by the bureau during raids at the company's offices. In March 2018, the Competition Bureau issued a court filing accusing Postmedia and Torstar of structuring the deal they made together with no-compete clauses in an effort to reduce competition in the newspaper industry in violation of the Competition Act. According to Marc Edge, author of The Postmedia Effect, the network received $9.9 million in government financial assistance in 2022. In the same year, Postmedia's operating income was only $13 million. In 2016, Paul Godfrey took a $900,000 bonus during a time when Postmedia laid off staff company-wide. CFO Doug Lamb received $450,000, COO Andrew MecLeod $425,000, legal and general counsel Jeffrey Harr $300,000, and National Post president Gordon Fisher $200,000. Unions representing Canadian journalists wanted the Postmedia executives to reject the total $2,275,000 as the newspaper chain continued to cut staff. In 2015, the Globe and Mail reported that National Post columnist Conrad Black, who used to own some of Postmedia's newspapers and is one of Postmedia's largest investors, told executives that he felt that some of the properties' qualities have deteriorated. Black felt that the company should be investing on improving the quality of its properties. Assets Postmedia owns newspapers that serve smaller communities across Canada, including: In addition, Postmedia Network owns all websites associated with all properties listed on this page either wholly or in partnership. See also Other media groups in Canada include: References External links
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[SOURCE: https://en.wikipedia.org/wiki/Microsoft_Flight_Simulator] \| [TOKENS: 4294]
Contents Microsoft Flight Simulator Microsoft Flight Simulator is a series of flight simulation video games for MS-DOS, Classic Mac OS, and Microsoft Windows operating systems. It was an early product in the Microsoft application portfolio and differed significantly from Microsoft's other software, which was largely business-oriented. Microsoft Flight Simulator is Microsoft's longest-running software product line, predating Windows by three years, and is one of the longest-running video game series of all time. Bruce Artwick began the development of Flight Simulator in 1977. His company, Sublogic, initially distributed it for various personal computers. In 1981, Artwick was approached by Microsoft's Alan M. Boyd who was interested in creating a "definitive game" that would graphically demonstrate the difference between older 8-bit computers, such as the Apple II, and the new 16-bit computers, such as the IBM PC, still in development. In 1982, Artwick's company licensed a version of Flight Simulator for the IBM PC to Microsoft, which marketed it as Microsoft Flight Simulator. In 2009, Microsoft closed down Aces Game Studio, which was the department responsible for creating and maintaining the Flight Simulator series. In 2014, Dovetail Games were granted the rights by Microsoft to port the Gold Edition of Microsoft's Flight Simulator X to Steam and publish Flight Simulator X: Steam Edition. Microsoft announced a new installment at E3 in 2019, simply titled Microsoft Flight Simulator, to be released initially on PC and ported over to the Xbox Series consoles at a later date. On July 12, 2020, Microsoft opened up preorders and announced that Microsoft Flight Simulator for PC would be available on August 18, 2020. The company announced three different versions of the title – standard, deluxe, and premium deluxe, each providing an incremental set of gameplay features, including airports, and airplanes to choose from. The Xbox edition was released on July 27, 2021. The latest entry, Microsoft Flight Simulator 2024, was released on November 19, 2024. History Microsoft Flight Simulator began as a set of articles written by Bruce Artwick in 1976 about a 3D computer graphics program. When the magazine editor said that subscribers wanted to buy the program, Artwick set to work to create it and incorporated a company called Sublogic Corporation in 1977. The company began selling flight simulators for several computer platforms, including the 8080, Altair 8800, and IMSAI 8080. In 1979 Sublogic released FS1 Flight Simulator for the Apple II. In 1980, Sublogic released a version for the TRS-80, and in 1982 they licensed an IBM PC version with CGA graphics to Microsoft, which was released as simply Microsoft Flight Simulator on a self-booting disk. In the early days of less-than-100% IBM PC compatible systems, Flight Simulator and Lotus 1-2-3 were used as unofficial compatibility test software for new PC clone models. Sublogic continued to develop for other platforms and ported Flight Simulator II to the Apple II in 1983; Commodore 64, MSX, and Atari 8-bit computers in 1984; and Amiga and Atari ST in 1986. Meanwhile, Bruce Artwick left Sublogic and founded The Bruce Artwick Organization to continue his work on subsequent Microsoft releases, beginning with Microsoft Flight Simulator 3.0 in 1988. Microsoft Flight Simulator reached commercial maturity with version 3.1, and went on to encompass the use of 3D graphics and graphic hardware acceleration. Microsoft continued to produce newer versions of the flight simulation software, adding features, such as new aircraft types and augmented scenery. The 2000 and 2002 versions were available in "Standard" and "Professional" editions, where the latter included more aircraft, tools and scenery options. The 2004 release (version 9) marked the celebration of one hundred years of powered flight and had only one edition. Flight Simulator X, released in 2006, returned to dual versions with a "Standard" and a "Deluxe" edition. The flying area encompasses planet Earth with varying degrees of detail and includes over 24,000 airports. There is an ever-growing list of scenery representing major landmarks and popular cities. Landscape details become sparse as gameplay moves away from population centers within the flight simulator, particularly outside the United States, although a variety of websites offer scenery add-ons to remedy this. The three latest versions incorporate sophisticated weather simulation, along with the ability to download real-world weather data (first available with Flight Simulator 2000). Additional features in these newer versions include air traffic environments with interactive air traffic control functions, new aircraft models from the historical Douglas DC-3 to the modern Boeing 777, interactive lessons, challenges, and aircraft checklists. The two latest versions of Microsoft Flight Simulator have a "kiosk mode", which allows the application to be run in electronic kiosks located in public places like shopping malls. Microsoft Flight Simulator has a wide selection of upgrades and add-ons, both free and commercial, official and fan-made. Microsoft Flight Simulator X is the third most recent major release of Microsoft Flight Simulator, and the last one developed by Aces Game Studio. It includes a graphics engine upgrade and compatibility with preview DirectX 10 and Windows Vista. It was released on October 17, 2006, in North America. There are two versions of the game, both on two DVDs. The "Deluxe" edition contains the new Garmin G1000 integrated flight instrument system in three cockpits, additional aircraft, and missions; Tower Control capability in multiplayer mode; higher detail scenery for cities and airports; and a Software Development Kit (SDK) for development. The main improvements are graphical. Microsoft has also released a Flight Simulator X demo, which contains three aircraft, two airports, and two missions. It is compatible with Windows XP SP2 and Windows Vista. On January 22, 2009, it was reported that the development team was heavily affected by Microsoft's program of job cuts, with indications that the entire Microsoft Flight Simulator team had been laid off. Microsoft confirmed the closure of the Aces Game Studio on January 26, 2009, in a post on the official FSInsider Web site. stating "This difficult decision was made to align Microsoft's resources with our strategic priorities. Microsoft Flight Simulator X will remain available at retail stores and Web retailers, the Flight Sim community will continue to learn from and encourage one another, and we remain committed to the Flight Simulator franchise for the long term." According to former Aces employee Phil Taylor, the shutdown was not due to sales performance of FSX, but due to management problems and delays in project delivery, combined with increased demand for staff. Speculation in the mainstream and gaming media was that future versions could be released as an Internet-based version, or on Microsoft's Xbox platform. In October 2009, two (out of over fifty) former members of the Aces Game Studio formed a new game studio called the Cascade Game Foundry for the development of simulation games. In late 2007, Aces Game Studio announced Microsoft ESP (Enterprise Simulation Platform), a development platform for companies that want to create products that use the technology in Flight Simulator. Following the closure of the Aces Game Studio in January 2009, Lockheed Martin announced in late 2009 that they had negotiated with Microsoft a licensing agreement to purchase the intellectual property (including source code) for the Microsoft ESP product. It is the commercial-use version of Flight Simulator X SP2. On May 17, 2010, Lockheed announced that the new product based upon the ESP source code would be called Prepar3D (P3D). Lockheed hired members of the original Aces Game Studio team to continue development of the product. In November 2010, Lockheed Martin debuted Prepar3D version 1. Version 1.1 was released in April 2011, with a retail license cost of US$499. A developer license is also available for a monthly fee of US$9.95. In March 2012, along with the release of version 1.3, the pricing strategy was revised. The Professional edition is now available for US$199, with an Academic License available for US$59.95. Often touted as 'FSX on steroids', P3D has so far had 5 versions, with the latest launched on April 14, 2020. Version 5 features 41 aircraft and over 23000 airports. Before that, version 2, 3 and 4 saw releases in 2013, 2015, and 2017 respectively. Due to the changes in elevation between version 4 and version 5, many developers charged for upgrades to make their airport sceneries compatible with the new elevation. This elevation issue, in turn, created new developers to pop up to create "compatibility files" for older version 4 airports to work on version 5. Companies such as iniBuilds and Scandinavian Mountains lead the development of compatibility files. On July 9, 2014, Dovetail Games announced that Microsoft had granted them rights to develop the next Flight Simulator in the series. Dovetail Games also announced the release of Flight Simulator X: Gold Edition on Steam for late 2014, titled Microsoft Flight Simulator X: Steam Edition. It was released on December 18, 2014. It is a re-release and includes content that was provided with the original FSX: Gold Edition which includes FSX: Deluxe Edition, the Acceleration expansion pack, and both official Service Packs and repackages them in one bundle and a single installation. The Steam Edition includes "all standard Steam functionality", including an overhaul of the multiplayer support to go through Steam rather than the now-defunct GameSpy, improved stability on Windows 7 and 8, and features minor performance tweaks including a complete recompile using VS2013. Additionally, Dovetail Games has worked with existing developers and publishers to distribute their content on Steam as DLC. Currently, there are over 100 add-ons for FSX: Steam Edition from over 35 developers available on the Steam store including Aerosoft, Captain Sim, Orbx Simulation Systems, Real Environment Xtreme (REX), Carenado, Virtavia, and others. In May 2017, Dovetail Games announced Flight Sim World, based on the codebase of Flight Simulator X, and released later that month. Only a year later, on April 23, 2018, Dovetail announced end of development of Flight Sim World and the end of sales effective May 15, 2018. Microsoft released a new flight simulator titled Microsoft Flight in February 2012. Developed by The Coalition (as Microsoft Game Studios Vancouver), it was not part of the Microsoft Flight Simulator series, but instead was designed to replace it and aimed at drawing new users into flight gaming. While claiming to be simpler to use for inexperienced users, it is incompatible with Flight Simulator and does not allow the use of existing Flight Simulator add-ons (including aircraft, objects, and photographic scenery). The game was "pay to play", as only the single island of Hawai'i and one aircraft was available without buying downloadable content. On July 26, 2012, Microsoft cancelled further development of Flight. On June 9, 2019, as part of their E3 conference announcements Microsoft revealed that they would be bringing back the Flight Simulator series with an updated release, simply titled Microsoft Flight Simulator. On the same day, Microsoft launched a new website for the title and posted a teaser video on their Xbox YouTube channel. The new version features tight integration of ground satellite data and Microsoft's own Azure AI into the simulator's engine to generate near-photorealistic graphics. Asobo Studio is the lead developer. The game is Microsoft's first simulator since Microsoft Flight in 2012. In addition to the PC release it was also released for the Xbox Series X and Series S, making it the first entry in the Microsoft Flight Simulator series to be released for a gaming console. The Windows PC version of the simulator was released on August 18, 2020. Microsoft Flight Simulator launched for Xbox Series X and Series S on July 27, 2021 and can be played on the Xbox One with Cloud Gaming from Xbox Game Pass. On June 11, 2023, during the Xbox Games Showcase Microsoft revealed a trailer for Microsoft Flight Simulator 2024, which was captioned "the next generation of the legendary franchise." It was released in November 2024. Add-ons, customization, and community involvement The long history and consistent sales of Flight Simulator has encouraged a very large body of add-on packages to be developed as both commercial and volunteer ventures. A formal software development kit and other tools for the simulator exist to further facilitate third-party efforts, and some third parties have also learned to 'tweak' the simulator in various ways by trial and error. As for number of add-ons, tweaks, and modifications Flight Simulator can accommodate solely depends on the user's hardware setup. The number is not limited by the simulator, and when multiple computers are linked together with multiple monitors and third-party software and controls, Flight Simulator enthusiasts can build their own realistic home cockpits. Individual attributes of Flight Simulator aircraft that can be customized include; cockpit layout, cockpit image, aircraft model, aircraft model textures, aircraft flight characteristics, scenery models, scenery layouts, and scenery textures, often with simple-to-use programs, or only a text editor such as 'Notepad'. Dedicated 'flight simmers have taken advantage of Flight Simulator's vast add-on capabilities, having successfully linked Flight Simulator to homebuilt hardware, some of which approaches the complexity of commercial full-motion flight simulators. The simulator's aircraft are made up of five parts: Most versions of Microsoft Flight Simulator include some of the world's most popular aircraft from different categories, such as the Mooney Bravo and Beechcraft Baron 58, which fall into the general aviation category; the Airbus A321 and Boeing 737, which fall into the civil jets category; the Robinson R22, which falls into the helicopter category; the Air Scheffel 738, which falls into the general aviation category again; and many other planes commonly used around the world. Not being limited to using the default aircraft, add-on planes can be downloaded from many sources for free or purchased, which can then be installed into Microsoft Flight Simulator. The Beechcraft 1900D, pictured above, is an add-on aircraft. Similarly, add-on repaints can be added to default aircraft; these repaints are usually downloaded for free. A growing add-on category for the series is AI (artificial intelligence) traffic. AI traffic is the simulation of other vehicles in the FS landscape. This traffic plays an important role in the simulator, as it is possible to crash into traffic (this can be disabled), thus ending the player's session, and to interact with the traffic via the radio and ATC. This feature is active even with third-party traffic. Microsoft introduced AI traffic in MSFS 2002 with several airliners and private aircraft. This has since been supplemented with many files created by third-party developers. Typically, third-party aircraft models have multiple levels of detail, which allow the AI traffic to be better on frame rates, while still being detailed during close looks. There are several prominent freeware developers. Some third-party AI traffic can also be configured for "real-time" departures. Scenery add-ons usually involve replacements for existing airports, with enhanced and more accurate detail, or large expanses of highly detailed ground scenery for specific regions of the world. Some types of scenery add-on replace or add structures to the simulator. Both freeware and payware scenery add-ons are very widely available. Airport enhancements, for example, range from simple add-ons that update runways or taxiways to very elaborate packages that reproduce every lamp, pavement marking, and structure at an airport with near-total accuracy, including animated effects such as baggage cars or marshalling agents. Wide-area scenery enhancements may use detailed satellite photos and 3-D structures to closely reproduce real-world regions, particularly those including large cities, landmarks, or spectacular natural wonders. Virtual flight networks such as IVAO, VATSIM, and Pilot Edge as well as Virtual Skies, and Mindstar Aviation's AirspaceVR use special, small add-on modules for Flight Simulator to enable connection to their proprietary networks in multiplayer mode, and to allow for voice and text communication with other virtual pilots and controllers over the network. These networks allow players to enjoy and enhance realism in their game. These networks are for ATC (air traffic control). Some utilities, such as FSUIPC, merely provide useful tweaks for the simulator to overcome design limitations or bugs, or to allow more extensive interfacing with other third-party add-ons. Sometimes certain add-ons require other utility add-ons in order to work correctly with the simulator. Other add-ons provide navigation tools, simulation of passengers, and cameras that can view aircraft or scenery from any angle, more realistic instrument panels and gauges, and so on. Some software add-ons provide operability with specific hardware, such as game controllers and optical motion sensors. FSDeveloper.com is one website that host a forum style knowledge base aimed at the development of add-on items, tools, and software. Excel Unusual hosts two versions of flight simulator downloads and tutorials, built from scratch with only VBA and cell formulas, in both 2D and 3D. A number of websites are dedicated to providing users with add-on files (such as airplanes from actual airlines, airport utility cars, actual buildings located in specific cities, textures, and city files). The wide availability over the internet of freeware add-on files for the simulation package has encouraged the development of a large and diverse virtual community, linked up by design group and enthusiast message boards, online multiplayer flying, and 'virtual airlines'. The internet has also facilitated the distribution of 'payware' add-ons for the simulator, with the option of downloading the files, which reduces distribution costs. Reception Flight Simulator has been praised for its realism. PC Magazine in January 1983 called Flight Simulator "extraordinarily realistic ... a classic program, unique in the market". It praised the graphics and detailed scenery, and concluded "I think it's going to sell its share of IBM PCs, and will certainly sell some color/graphics adapters". BYTE in December 1983 wrote that "this amazing package does an incredible job of making you think you're actually flying a small plane". While it noted the inability to use a RGB monitor or a joystick, the magazine concluded that "for $49.95 you can't have everything". A pilot wrote in the magazine in March 1984 that he found the simulated Cessna 182 to be "surprisingly realistic". While criticizing the requirement of using the keyboard to fly, he concluded "Microsoft Flight Simulator is a tour de force of the programmer's art ... It can be an excellent introduction to how an aircraft actually operates for a budding or student pilot and can even help instrument pilots or those going for an instrument rating sharpen their skills". Another pilot similarly praised Flight Simulator 2.0 in PC Magazine that year, giving it 18 out of 18 points. He reported that its realism compared well to two $3 million hardware flight simulators he had recently flown, and that he could use real approach plates to land at and navigate airports Flight Simulator's manual did not document. Compute! warned "if you don't know much about flying, this program may overwhelm you. It's not a simple simulation. It's a challenging program even for experienced pilots". The magazine concluded that Flight Simulator "is interesting, challenging, graphically superb, diverse, rewarding, and just plain fun ... sheer delight". Flight Simulator 2.0 was reviewed in 1989 in Dragon #142 by Hartley, Patricia, and Kirk Lesser in "The Role of Computers" column. The reviewers gave the game 5 out of 5 stars. Computer Gaming World stated in 1994 that Flight Simulator 5 "is closer to simulating real flight than ever before". Microsoft Flight Simulator X was reviewed in 2006 by GameSpot. The reviewer gave the game an 8.4 out of 10 and commented on how it was realistic enough to be used for real-life flight training. Awards By June 1999, the series had sold 21 million units worldwide, for which it was awarded the Guinness World Record for best-selling flight simulator series. The success of the Microsoft Flight Simulator series has led to Guinness World Records awarding the series seven world records in the Guinness World Records: Gamer's Edition 2008. These records include "Longest Running Flight Sim Series", "Most Successful Flight Simulator Series", and "Most Expensive Home Flight Simulator Cockpit", which was built by Australian trucking tycoon Matthew Sheil, and cost around $200,000 to build. See also References External links
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[SOURCE: https://en.wikipedia.org/wiki/Archura] \| [TOKENS: 344]
Contents Archura Archura (Old Turkic: 𐰀𐰺𐰲𐰆𐰺𐰀; Turkish: Arçura) is a shapeshifting woodland spirit in Turkic mythology who protects wild animals and forests. Description Archura usually appears as a man, but he is able to change his size from that of a blade of grass to a very tall tree. He has hair and a beard made from living grass, and is sometimes depicted with a tail, hooves, and horns. Archura has a close bond with the gray wolf. Legend describes him as having a red scarf and his left shoe on his right foot. He also had no shadow. Archura protects the animals and birds in the forest and tells them when to migrate. He can shapeshift into many different forms. As a human, he looks like a peasant with glowing eyes. Archuras are terribly mischievous beings: they have horrible cries, and can imitate voices of people familiar to wanderers and lure them back to their caves, where the Archuras will tickle them to death; they also remove signs from their posts. They aren't evil: although they enjoy misguiding humans and kidnapping young women, they are also known to keep grazing cattle from wandering too far into the forests and getting lost. Sometimes more than one Archura inhabits a forest, and then they will fight for their territory, knocking down trees and scaring animals. Chor / Chura There are two different kinds of Chura. The other is Bichura, a household spirit and consort of Ev iyesi. See also References External links Bibliography
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[SOURCE: https://en.wikipedia.org/wiki/The_Globe_and_Mail] \| [TOKENS: 3841]
Contents The Globe and Mail The Globe and Mail is a Canadian newspaper printed in five cities in western and central Canada. With a weekly readership of more than 6 million in 2024, it is Canada's most widely read newspaper on weekdays and Saturdays, although it falls slightly behind the Toronto Star in overall weekly circulation because the Star publishes a Sunday edition, whereas the Globe does not. The Globe and Mail is regarded by some as Canada's "newspaper of record". The Globe and Mail's predecessors, The Globe and The Daily Mail and Empire were both established in the 19th century. The former was established in 1844, while the latter was established in 1895 through a merger of The Toronto Mail and The Empire. In 1936, The Globe and The Mail and Empire merged to form The Globe and Mail. The newspaper was acquired by FP Publications in 1965, who later sold the paper to the Thomson Corporation in 1980. In 2001, the paper merged with broadcast assets held by BCE Inc. to form the joint venture Bell Globemedia. In 2010, direct control of the newspaper was reacquired by the Thomson family through its holding company, the Woodbridge Company. The Woodbridge Company acquired BCE's remaining stake in the newspaper in 2015. History The predecessor to The Globe and Mail was called The Globe; it was founded in 1844 by Scottish immigrant George Brown, who became a Father of Confederation. Brown's liberal politics led him to court the support of the Clear Grits, a precursor to the modern Liberal Party of Canada. The Globe began in Toronto as a weekly party organ for Brown's Reform Party, but seeing the economic gains he could make in the newspaper business, Brown soon targeted a wide audience of liberal-minded freeholders. He selected as the motto for the editorial page a quotation from Junius, "The subject who is truly loyal to the Chief Magistrate will neither advise nor submit to arbitrary measures." The quotation is carried on the editorial page to this day. By the 1850s, The Globe had become an independent and well-regarded daily newspaper. It began distribution by railway to other cities in Ontario shortly after Confederation. At the dawn of the twentieth century, The Globe added photography, a women's section, and the slogan "Canada's National Newspaper", which remains on its front-page banner. It began opening bureaus and offering subscriptions across Canada. The Daily Mail and Empire was another newspaper that served as The Globe and Mail''s predecessor, having been formed through a merger of two conservative newspapers, The Toronto Mail and The Empire in 1895. The Toronto Mail was established in 1872, while The Empire was founded in 1887 by Brown's former rival, Conservative politician and then-Prime Minister John A. Macdonald.[citation needed] On November 23, 1936, The Globe merged with The Mail and Empire. The merger was arranged by George McCullagh, who fronted for mining magnate William Henry Wright and became the first publisher of The Globe and Mail. Press reports at the time stated that "the minnow swallowed the whale" because The Globe's circulation (at 78,000) was smaller than that of The Mail and Empire (118,000). From 1937 until 1974, the newspaper was produced at the William H. Wright Building, located at then 140 King Street West on the northeast corner of King Street and York Street, close to the homes of the Toronto Daily Star at Old Toronto Star Building at 80 King West and the Old Toronto Telegram Building at Bay and Melinda. The building at 130 King Street West was demolished in 1974 to make way for First Canadian Place. McCullagh committed suicide in 1952, and the newspaper was sold to the Webster family of Montreal. As the paper lost ground to The Toronto Star in the local Toronto market, it began to expand its national circulation. The newspaper was unionized in 1955, under the banner of the American Newspaper Guild. In 1965, the paper was bought by Winnipeg-based FP Publications, controlled by Bryan Maheswary, which owned a chain of local Canadian newspapers. FP put a strong emphasis on the Report on Business section that was launched in 1962, thereby building the paper's reputation as the voice of Toronto's business community. The newspaper moved locations from the William H. Wright Building to 444 Front Street West in 1974. The new location had been the headquarters of the Toronto Telegram newspaper, built in 1963. The Globe and Mail remained in the building until 2016, when it relocated to the Globe and Mail Centre. The Front Street building along with the Toyota dealership next door were demolished and redeveloped as The Well. FP Publications and The Globe and Mail were sold in 1980 to The Thomson Corporation, a company run by the family of Kenneth Thomson. After the acquisition, there were few changes made in editorial or news policy. However, there was more attention paid to national and international news on the editorial, op-ed, and front pages in contrast to its previous policy of stressing Toronto and Ontario material. The Globe and Mail has always been a morning newspaper. Since the 1980s, it has been printed in separate editions in six Canadian cities: Montreal, Toronto (several editions), Winnipeg (Estevan, Saskatchewan), Calgary and Vancouver. Southern Ontario Newspaper Guild (SONG) employees took their first-ever strike vote at The Globe in 1982, also marking a new era in relations with the company. Those negotiations ended without a strike, and the Globe unit of SONG still has a strike-free record. SONG members voted in 1994 to sever ties with the American-focused Newspaper Guild. Shortly afterwards, SONG affiliated with the Communications, Energy and Paperworkers Union of Canada (CEP). Under the editorship of William Thorsell in the 1980s and 1990s, the paper strongly endorsed the free trade policies of Progressive Conservative Prime Minister Brian Mulroney. The paper also became an outspoken proponent of the Meech Lake Accord and the Charlottetown Accord, with their editorial the day of the 1995 Quebec Referendum mostly quoting a Mulroney speech in favour of the Accord. During this period, the paper continued to favour such socially liberal policies as decriminalizing drugs (including cocaine, whose legalization was advocated most recently in a 1995 editorial) and expanding gay rights.[citation needed] In 1995, the paper launched its website, globeandmail.com; on June 9, 2000, the site began covering breaking news with its own content and journalists in addition to the content of the print newspaper. Since the launch of the National Post as another English-language national paper in 1998, some industry analysts had proclaimed a "national newspaper war" between The Globe and Mail and the National Post. Partly as a response to this threat, in 2001 The Globe and Mail was combined with broadcast assets held by BCE Inc. to form the joint venture Bell Globemedia. In 2004, access to some features of globeandmail.com became restricted to paid subscribers only. The subscription service was reduced a few years later to include an electronic edition of the newspaper, access to its archives, and membership to a premium investment site. On April 23, 2007, the paper introduced significant changes to its print design and also introduced a new unified navigation system to its websites. The paper added a "lifestyle" section to the Monday-Friday editions, entitled "Globe Life", which has been described as an attempt to attract readers from the rival Toronto Star. Additionally, the paper followed other North American papers by dropping detailed stock listings in print and by shrinking the printed paper to 12-inch width. At the end of 2010, the Thomson family, through its holding company Woodbridge, re-acquired direct control of The Globe and Mail with an 85-percent stake, through a complicated transaction involving most of the Ontario-based mediasphere. BCE continued to hold 15 percent, and would eventually own all of television broadcaster CTVglobemedia. On October 1, 2010, The Globe and Mail unveiled redesigns to both its paper and online formats, dubbed "the most significant redesign in The Globe's history" by Editor-in-Chief John Stackhouse. The paper version has a bolder, more visual presentation that features 100 per cent full-colour pages, more graphics, slightly glossy paper stock (with the use of state-of-the-art heat-set printing presses), and emphasis on lifestyle and similar sections (an approached dubbed "Globe-lite" by one media critic). The Globe and Mail sees this redesign as a step toward the future (promoted as such by a commercial featuring a young girl on a bicycle), and a step towards provoking debate on national issues (the October 1 edition featured a rare front-page editorial above the Globe and Mail banner). The paper has made changes to its format and layout, such as the introduction of colour photographs, a separate tabloid book-review section, and the creation of the Review section on arts, entertainment, and culture. Although the paper is sold throughout Canada and has long called itself "Canada's National Newspaper", The Globe and Mail also serves as a Toronto metropolitan paper, publishing several special sections in its Toronto edition that are not included in the national edition. As a result, it is sometimes ridiculed for being too focused on the Greater Toronto Area, part of a wider humorous portrayal of Torontonians being blind to the greater concerns of the nation. Critics sometimes refer to the paper as the "Toronto Globe and Mail" or "Toronto's National Newspaper." In an effort to gain market share in Vancouver, The Globe and Mail began publishing a distinct west-coast edition, edited independently in Vancouver, containing a three-page section of British Columbia news.[citation needed] During the 2010 Winter Olympics in Vancouver, The Globe and Mail published a Sunday edition, marking the first time that the paper had ever published on Sunday. In October 2012, The Globe and Mail relaunched its digital subscription offering under the marketing brand "Globe Unlimited" to include metered access for some of its online content. On September 25, 2012, The Globe and Mail announced it had disciplined high-profile staff columnist Margaret Wente after she admitted to plagiarism. The scandal emerged after University of Ottawa professor and blogger, Carol Wainio, repeatedly raised plagiarism accusations against Wente on her blog. On October 22, 2012, online Canadian magazine The Tyee published an article criticizing the Globe's "advertorial" policies and design. The Tyee alleged the Globe intentionally blurred the lines between advertising and editorial content in order to offer premium and effective ad space to high-paying advertisers. The Tyee reporter Jonathan Sas cited an 8-page advetorial section in the October 2, 2012, print edition, called "The Future of the Oil Sands", to illustrate the difficulty in distinguishing the section from regular Globe content, but did note that Page 2 of the section notes that the report was produced by a marketing agency (Randall Anthony Communications) in conjunction with the advertising department of The Globe and Mail. In 2013, The Globe and Mail ended distribution of the print edition to Newfoundland. In 2014, then-publisher Phillip Crawley announced the recruitment of a former staffer returned from afar, David Walmsley, as Editor-in-Chief, to be enacted March 24. The headquarters site at 444 Front Street West was sold in 2012 to three real estate firms (RioCan Real Estate Investment Trust, Allied Properties Real Estate Investment Trust, and Diamond Corporation) that planned to redevelop the 6.5 acres (2.6 ha) site at Front Street West into a retail, office and residential complex. In 2016, the newspaper moved to 351 King Street East, adjacent to the former Toronto Sun Building. It now occupies five of the new tower's 17 stories, and is named the "Globe and Mail Centre" under a 15-year lease. In 2015, the Woodbridge Company acquired the remaining 15 per cent of the newspaper from BCE. Former Minister Michael Chan filed a libel lawsuit against The Globe and Mail in 2015 for $4.55 million after the paper allegedly "declined to retract their unfounded allegations" suggesting that Chan was "a risk to national security because of his ties to China." In August 2024, the Ontario Superior Court of Justice dismissed the case after Chan's failure to file court documents on time. In 2017, The Globe and Mail refreshed its web design with a new pattern library and faster load times on all platforms. The new website is designed to display well on mobile, tablet, and desktop, with pages that highlight journalists and newer articles. The new website has won several awards, including an Online Journalism Award. The Globe and Mail also launched its News Photo Archive, a showcase of more than 10,000 photos from its historic collection dedicated to subscribers. In concert with the Archive of Modern Conflict, The Globe and Mail digitized tens of thousands of negatives and photo prints from film, dating from 1900 to 1998, when film was last used in the newsroom. The Globe and Mail ended distribution of its print edition to New Brunswick, Nova Scotia, and PEI on November 30, 2017. Globe and Mail employees are represented by Unifor, whose most recent negotiations in September 2021 brought in a three-year contract set to end in 2024.[needs update] Report on Business "Report on Business", commonly referred to as "ROB", is the financial section of the newspaper. It is the most lengthy daily compilation of economic news in Canada,[citation needed] and is considered an integral part of the newspaper. Standard ROB sections are typically fifteen to twenty pages. Every Saturday, a special "Report on Business Weekend" is released, which includes features on corporate lifestyle and personal finance, and extended coverage of business news. On the last Friday of every month, the Report on Business Magazine is released, the largest Canadian finance-oriented magazine. Business News Network (formerly ROBtv) is a twenty-four-hour news and business television station, founded by The Globe and Mail but operated by CTV through the companies' relationship with CTVglobemedia. The Top 1000 is a list of Canada's one thousand largest public companies ranked by profit released annually by the Report on Business Magazine. Political stance In the 1990s, The Globe and Mail was the main media vehicle for Canada's right wing. In 2011, Canadian sociologist Elke Winter said that The Globe and Mail was considered politically moderately-conservative-to-centrist and is less socially liberal than its competitor, the Toronto Star.: 96 Winter writes that "While the Globe has probably lost parts of its more conservative and corporate readership to the National Post, it continues to cater to the Canadian political and intellectual elite." According to one 2006 publication, the newspaper was considered an "upmarket" newspaper, in contrast to downmarket newspapers such as the Toronto Sun.: 6 In federal general elections, The Globe and Mail has generally endorsed right-wing parties. The paper endorsed Brian Mulroney's Progressive Conservatives in 1984 and 1988. In 1993, the paper endorsed a Liberal minority government ("We do not trust the Liberals to govern unguarded"[citation needed]). Practically, the newspaper endorsed Preston Manning's right-wing Reform Party in Ontario and West to avoid vote splitting. In 1998, the newspaper endorsed the Progressive Conservatives, and it endorsed the Liberals in 2000 and 2004. The newspaper endorsed Stephen Harper's Conservative Party in the 2006, 2008, and 2011 elections; in the 2015 election, the paper again endorsed the Conservatives but called for the party's leader, Prime Minister Stephen Harper, to step down. In the 2019 federal election it did not make an endorsement. While the paper was known as a generally conservative voice of the business establishment in the postwar decades, historian David Hayes, in a review of its positions, has noted the Globe's editorials in this period "took a benign view of hippies and homosexuals; championed most aspects of the welfare state; opposed, after some deliberation, the Vietnam War; and supported legalizing marijuana." A December 12, 1967, Globe and Mail editorial, written by Martin O'Malley, stated, "Obviously, the state's responsibility should be to legislate rules for a well-ordered society. It has no right or duty to creep into the bedrooms of the nation." On December 21, 1967, then Justice Minister Pierre Trudeau, in defending the government's Omnibus bill and the decriminalization of homosexuality, coined the phrase, "There's no place for the state in the bedrooms of the nation." The Globe and Mail endorsed Democratic candidate Hillary Clinton in the run-up for the 2016 U.S. presidential election. In a 2017 survey conducted among Canadians, it was found that 50% of respondents viewed The Globe and Mail to be biased; placing it in a tie for first place with CBC Television in terms of perceived bias. Respondents who viewed The Globe and Mail as biased had mixed opinions as to whether its coverage was favourable to the Liberal Party or the Conservatives. A 2010 survey found that The Globe and Mail was perceived as slightly right of centre, in similar standing to the bulk of other Canadian news organizations. Globe writers and columnists Andrew Coyne, John Ibbitson and Doug Saunders are proponents of the Century Initiative. Additionally, the Globe has devoted op-ed space to those affiliated with or sympathetic to the project. The initiative's stated goal is to increase Canada's population to 100 million by 2100. Canada will need to increase its annual immigration intake to make this a reality. The initiative was founded in 2009 as the Laurier Project and is backed by Dominic Barton, the former head of the consultancy firm McKinsey & Company. In 2021, The Globe and Mail launched a webcast in partnership with the Century Initiative called "People and Prosperity: Planning for Canadian Growth". Notable staff The editorial board of the newspaper is chaired by the editor-in-chief, who nominates new members as needed. The editorial board controls the overall direction of the newspaper and is given prime billing on the editorial pages. It is the editorial board who endorses political candidates in the run-up to elections. The editorial board's membership list has become a closely guarded secret under the tenure of David Walmsley. See also Notes References Further reading External links
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[SOURCE: https://en.wikipedia.org/wiki/Wetware_computer] \| [TOKENS: 3656]
Contents Wetware computer A wetware computer is an organic computer (which can also be known as an artificial organic brain or a neurocomputer) composed of organic material "wetware" such as "living" neurons. Wetware computers composed of neurons are different than conventional computers because they use biological materials, and offer the possibility of substantially more energy-efficient computing. While a wetware computer is still largely conceptual, there has been limited success with construction and prototyping, which has acted as a proof of the concept's realistic application to computing in the future. The most notable prototypes have stemmed from the research completed by biological engineer William Ditto during his time at the Georgia Institute of Technology. His work constructing a simple neurocomputer capable of basic addition from leech neurons in 1999 was a significant discovery for the concept. This research was a primary example driving interest in creating these artificially constructed, but still organic brains. Origins and theoretical foundations The term wetware came from cyberpunk fiction, notably through Gibson's Neuromancer, but was quickly taken up in scientific literature to explain computation by biological material, Theories of early biological computation borrowed from Alan Turing's morphogenesis model, which showed that chemical interactions could produce complex patterns without centralized control. Hopfield's associative memory networks also provided a foundation for biological information systems with fault tolerance and self-organization. Major characteristics and processes Biological wetware systems demonstrate dynamic reconfigurability underpinned by neuroplasticity and enable continuous learning and adaptation. Reaction-diffusion-based computing and molecular logic gates allow spatially parallel information processing unachievable in conventional systems. These systems also show fault tolerance and self-repair at the cellular and network level. The development of cerebral organoids—miniature lab-grown brains—demonstrates spontaneous learning behavior and suggests biological tissue as a viable computational substrate. Overview The concept of wetware is an application of specific interest to the field of computer manufacturing. Moore's law, which states that the number of transistors which can be placed on a silicon chip is doubled roughly every two years, has acted as a goal for the industry for decades, but as the size of computers continues to decrease, the ability to meet this goal has become more difficult, threatening to reach a plateau. Due to the difficulty in reducing the size of computers because of size limitations of transistors and integrated circuits, wetware provides an unconventional alternative. A wetware computer composed of neurons is an ideal concept because, unlike conventional materials which operate in binary (on/off), a neuron can shift between thousands of states, constantly altering its chemical conformation, and redirecting electrical pulses through over 200,000 channels in any of its many synaptic connections. Because of this large difference in the possible settings for any one neuron, compared to the binary limitations of conventional computers, the space limitations are far fewer. Background The concept of wetware is distinct and unconventional and draws slight resonance with both hardware and software from conventional computers. While hardware is understood as the physical architecture of traditional computational devices, comprising integrated circuits and supporting infrastructure, software represents the encoded architecture of storage and instructions. Wetware is a separate concept that uses the formation of organic molecules, mostly complex cellular structures (such as neurons), to create a computational device such as a computer. In wetware, the ideas of hardware and software are intertwined and interdependent. The molecular and chemical composition of the organic or biological structure would represent not only the physical structure of the wetware but also the software, being continually reprogrammed by the discrete shifts in electrical pulses and chemical concentration gradients as the molecules change their structures to communicate signals. The responsiveness of a cell, proteins, and molecules to changing conformations, both within their structures and around them, ties the idea of internal programming and external structure together in a way that is alien to the current model of conventional computer architecture. The structure of wetware represents a model where the external structure and internal programming are interdependent and unified; meaning that changes to the programming or internal communication between molecules of the device would represent a physical change in the structure. The dynamic nature of wetware borrows from the function of complex cellular structures in biological organisms. The combination of "hardware" and "software" into one dynamic, and interdependent system which uses organic molecules and complexes to create an unconventional model for computational devices is a specific example of applied biorobotics. Cells in many ways can be seen as their form of naturally occurring wetware, similar to the concept that the human brain is the preexisting model system for complex wetware. In his book Wetware: A Computer in Every Living Cell (2009) Dennis Bray explains his theory that cells, which are the most basic form of life, are just a highly complex computational structure, like a computer. To simplify one of his arguments a cell can be seen as a type of computer, using its structured architecture. In this architecture, much like a traditional computer, many smaller components operate in tandem to receive input, process the information, and compute an output. In an overly simplified, non-technical analysis, cellular function can be broken into the following components: Information and instructions for execution are stored as DNA in the cell, RNA acts as a source for distinctly encoded input, processed by ribosomes and other transcription factors to access and process the DNA and to output a protein. Bray's argument in favor of viewing cells and cellular structures as models of natural computational devices is important when considering the more applied theories of wetware to biorobotics. Wetware and biorobotics are closely related concepts, which both borrow from similar overall principles. A biorobotic structure can be defined as a system modeled from a preexisting organic complex or model such as cells (neurons) or more complex structures like organs (brain) or whole organisms. Unlike wetware, the concept of biorobotics is not always a system composed of organic molecules, but instead could be composed of conventional material which is designed and assembled in a structure similar or derived from a biological model. Biorobotics have many applications and are used to address the challenges of conventional computer architecture. Conceptually, designing a program, robot, or computational device after a preexisting biological model such as a cell, or even a whole organism, provides the engineer or programmer the benefits of incorporating into the structure the evolutionary advantages of the model. Effects on users Wetware technologies such as BCIs and neuromorphic chips offer new possibilities for user autonomy. For those with disabilities, such systems could restore motor or sensory functions and enhance quality of life. However, these technologies raise ethical questions: cognitive privacy, consent over biological data, and risk of exploitation. Without proper oversight, wetware technologies may also widen inequality, favoring those with access to cognitive enhancements. Open governance frameworks and ethical AI design grounded in neuro ethics will be essential. With the development of wetware devices, disparities in access could exacerbate social inequalities, benefiting those who have resources to enhance cognitive or physical abilities. It is necessary to create strong ethical frameworks, inclusive development practices, and open systems of governance to reduce risks and make sure that wetware advances are beneficial to all segments of society. Applications and goals In 1999 William Ditto and his team of researchers at Georgia Institute of Technology and Emory University created a basic form of a wetware computer capable of simple addition by harnessing leech neurons. Leeches were used as a model organism due to the large size of their neuron, and the ease associated with their collection and manipulation. However, these results have never been published in a peer-reviewed journal, prompting questions about the validity of the claims. The computer was able to complete basic addition through electrical probes inserted into the neuron. The manipulation of electrical currents through neurons was not a trivial accomplishment, however. Unlike conventional computer architecture, which is based on the binary on/off states, neurons are capable of existing in thousands of states and communicate with each other through synaptic connections with each containing over 200,000 channels. Each can be dynamically shifted in a process called self-organization to constantly form and reform new connections. A conventional computer program called the dynamic clamp, capable of reading the electrical pulses from the neurons in real time and interpreting them was written by Eve Marder, a neurobiologist at Brandeis University. This program was used to manipulate the electrical signals being input into the neurons to represent numbers and to communicate with each other to return the sum. While this computer is a very basic example of a wetware structure it represents a small example with fewer neurons than found in a more complex organ. It is thought by Ditto that by increasing the number of neurons present the chaotic signals sent between them will self-organize into a more structured pattern, such as the regulation of heart neurons into a constant heartbeat found in humans and other living organisms. After his work creating a basic computer from leech neurons, Ditto continued to work not only with organic molecules and wetware but also on the concept of applying the chaotic nature of biological systems and organic molecules to conventional material and logic gates. Chaotic systems have advantages for generating patterns and computing higher-order functions like memory, arithmetic logic, and input/output operations. In his article Construction of a Chaotic Computer Chip Ditto discusses the advantages in programming of using chaotic systems, with their greater sensitivity to respond and reconfigure logic gates in his conceptual chaotic chip. The main difference between a chaotic computer chip and a conventional computer chip is the reconfigurability of the chaotic system. Unlike a traditional computer chip, where a programmable gate array element must be reconfigured through the switching of many single-purpose logic gates, a chaotic chip can reconfigure all logic gates through the control of the pattern generated by the non-linear chaotic element. Cognitive biology evaluates cognition as a basic biological function. W. Tecumseh Fitch, a professor of cognitive biology at the University of Vienna, is a leading theorist on ideas of cellular intentionality. The idea is that not only do whole organisms have a sense of "aboutness" of intentionality, but that single cells also carry a sense of intentionality through cells' ability to adapt and reorganize in response to certain stimuli. Fitch discusses the idea of nano-intentionality, specifically in regards to neurons, in their ability to adjust rearrangements to create neural networks. He discusses the ability of cells such as neurons to respond independently to stimuli such as damage to be what he considers "intrinsic intentionality" in cells, explaining that "while at a vastly simpler level than intentionality at the human cognitive level, I propose that this basic capacity of living things [response to stimuli] provides the necessary building blocks for cognition and higher-order intentionality." Fitch describes the value of his research to specific areas of computer science such as artificial intelligence and computer architecture. He states "If a researcher aims to make a conscious machine, doing it with rigid switches (whether vacuum tubes or static silicon chips) is barking up the wrong tree." Fitch believes that an important aspect of the development of areas such as artificial intelligence is wetware with nano-intentionally, and autonomous ability to adapt and restructure itself. In a review of the above-mentioned research conducted by Fitch, Daniel Dennett, a professor at Tufts University, discusses the importance of the distinction between the concept of hardware and software when evaluating the idea of wetware and organic material such as neurons. Dennett discusses the value of observing the human brain as a preexisting example of wetware. He sees the brain as having "the competence of a silicon computer to take on an unlimited variety of temporary cognitive roles." Dennett disagrees with Fitch on certain areas, such as the relationship of software/hardware versus wetware, and what a machine with wetware might be capable of. Dennett highlights the importance of additional research into human cognition to better understand the intrinsic mechanisms by which the human brain can operate, to better create an organic computer. Wetware computers should not be confused with brain-on-a-chip devices have that are mostly aimed at replacing animal models in preclinical drug screening. Modern wetware computers use similar technology derived from the brain-on-a-chip field, but medical applications from wetware computing specifically have not been established. Wetware computers may have substantial ethical implications,[additional citation(s) needed] for instance related to possible potentials to sentience and suffering and dual-use technology.[citation needed] Moreover, in some cases the human brain itself may be connected as a kind of "wetware" to other information technology systems which may also have large social and ethical implications, including issues related to intimate access to people's brains. For example, in 2021 Chile became the first country to approve neurolaw that establishes rights to personal identity, free will and mental privacy. The concept of artificial insects may raise substantial ethical questions, including questions related to the decline in insect populations.[citation needed] It is an open question whether human cerebral organoids could develop a degree or form of consciousness. Whether or how it could acquire its moral status with related rights and limits[citation needed] may also be potential future questions. There is research on how consciousness could be detected. As cerebral organoids may acquire human brain-like neural function subjective experience and consciousness may be feasible. Moreover, it may be possible that they acquire such upon transplantation into animals. A study notes that it may, in various cases, be morally permissible "to create self-conscious animals by engrafting human cerebral organoids, but in the case, the moral status of such animals should be carefully considered". Applications Wetware has driven innovations in brain-computer interfaces (BCIs), allowing neural activity to control external devices and enabling people with disabilities to regain communication and movement. Neuromorphic engineering, which mimics neural architectures using silicon, has resulted in low-power, highly adaptive artificial systems. Synthetic biology has enabled the development of programmable biological processors for diagnostics and smart therapeutics. Brain organoids are also being used for computational pattern recognition and memory emulation. Large-scale international efforts like the Human Brain Project aim to simulate the entire human brain using insights from wetware. Evaluating potential and limitations The core advantage of wetware is its potential to overcome the rigidity and energy inefficiencies of binary transistor-based systems. Digital systems operate through fixed binary pathways and consume increasing energy as computational loads increase. Wetware, in contrast, uses decentralized and adaptive data flow that mimics biology. Notwithstanding the encouraging advances, several challenges hinder the effective utilization of wetware computing systems. Scalability is problematic due to the inherent variability of biological systems and their responsiveness to environmental factors, which makes large-scale implementation difficult. Additionally, the absence of standardization when combining silicon and biological systems hampers reproducibility and cooperation between research groups biological systems must also be stabilized carefully to turn away genetic drift and contamination necessary for reliable computational functionality.[citation needed] Good parts – Replacing binary systems with organic cell structures opens the door to decentralized adaptive systems. Cells naturally form clusters and connections, much like neurons transmitting electrical and biochemical signals. Such a shift would increase scalability and efficiency, enabling users to interact with information in an intuitive and organic manner. Still, biological systems are sensitive to environmental changes, which presents challenges for standardization and reproducibility. Additionally, ethical concerns remain especially in using living neural tissue and lab-grown brain constructs.[citation needed] Bad parts – Despite its promise, organic computing currently suffers from major limitations. Transistors still dominate computer architecture with a binary "on/off" model that restricts long-term energy efficiency and adaptability. As a result, personal computers in everyday use whether for work, games, or research often contribute to higher energy output and environmental impact.[citation needed] While there have been few major developments in the creation of an organic computer since the neuron-based calculator developed by Ditto in the 1990s, research continues to push the field forward, and in 2023 a functioning computer was constructed by researchers at the University of Illinois Urbana-Champaign using 80,000 mouse neurons as processor that can detect light and electrical signals. Projects such as the modeling of chaotic pathways in silicon chips by Ditto have made discoveries in ways of organizing traditional silicon chips and structuring computer architecture to be more efficient and better structured. Ideas emerging from the field of cognitive biology also help to continue to push discoveries in ways of structuring systems for artificial intelligence, to better imitate preexisting systems in humans. In a proposed fungal computer using basidiomycetes, information is represented by spikes of electrical activity, a computation is implemented in a mycelium network, and an interface is realized via fruit bodies. Connecting cerebral organoids (including computer-like wetware) with other nerve tissues may become feasible in the future, as is the connection of physical artificial neurons (not necessarily organic) and the control of muscle tissue. External modules of biological tissue could trigger parallel trains of stimulation back into the brain. All-organic devices could be advantageous because it could be biocompatible which may allow it to be implanted into the human body. This may enable treatments of certain diseases and injuries to the nervous system. Three companies are focusing on wetware computing using living neurons: Convergence of AI and wetware One technology developing today is the fusion of artificial intelligence (AI) with wetware. Modern research shows that hybrid systems combining living neural networks with AI can enable self-repair, real-time adaptation, and emotional intelligence. These systems are more flexible than conventional AI and can integrate learning and memory in real time. Such integration lays the foundation for AI that mirrors human cognition and behavior, potentially creating intelligent systems grounded in neuroscience. Neural networks embodied in AI systems could facilitate continuous learning, emotional processing, and fault tolerance more than existing silicon-based implementations. Additionally, AI systems based on neuroethical principles could uphold transparency, fairness, and autonomy. While early research is ongoing, the integration of wetware and artificial intelligence seeks to redefine both fields with the possibility of creating more human-like, moral, and resilient intelligent systems. [citation needed] See also External links References
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[SOURCE: https://en.wikipedia.org/wiki/John_Stuart_Mill] \| [TOKENS: 11212]
Contents John Stuart Mill John Stuart Mill (20 May 1806 – 7 May 1873) was an English philosopher, political economist, politician and civil servant. One of the most influential thinkers in the history of liberalism and social liberalism, he contributed widely to social theory, political theory, and political economy. Dubbed "the most influential English-speaking philosopher of the nineteenth century" by the Stanford Encyclopedia of Philosophy, he conceived of liberty as justifying the freedom of the individual in opposition to unlimited state and social control. He advocated political and social reforms such as proportional representation, the emancipation of women, and the development of labour organisations and farm cooperatives. The Columbia Encyclopedia describes Mill as occasionally coming "close to socialism, a theory repugnant to his predecessors". He was a proponent of utilitarianism, an ethical theory developed by his predecessor Jeremy Bentham. He contributed to the investigation of scientific methodology, though his knowledge of the topic was based on the writings of others, notably William Whewell, John Herschel, and Auguste Comte, and research carried out for Mill by Alexander Bain. He engaged in written debate with Whewell. A member of the Liberal Party and author of the early feminist work The Subjection of Women, Mill was also the second Member of Parliament to call for women's suffrage after Henry Hunt in 1832. The ideas presented in his 1859 essay On Liberty have remained the basis of much political thought, and a copy is passed to the president of the Liberal Democrats (the successor party to Mill's own) as a symbol of office. Biography John Stuart Mill was born at 13 Rodney Street in Pentonville, then on the edge of the capital and now in central London, the eldest son of Harriet Barrow and the Scottish philosopher, historian, and economist James Mill. John Stuart was educated by his father, with the advice and assistance of Jeremy Bentham for whom he had worked as a ghostwriter and Francis Place. He was given an extremely rigorous upbringing, and was deliberately shielded from association with children his own age other than his siblings. His father, a follower of Bentham and an adherent of associationism, had as his explicit aim to create a genius intellect that would carry on the cause of utilitarianism and its implementation after he and Bentham had died. Mill was a notably precocious child. He describes his education in his autobiography. At the age of three he was taught Greek. By the age of eight, he had read Aesop's Fables, Xenophon's Anabasis, and the whole of Herodotus, and was acquainted with Lucian, Diogenes Laërtius, Isocrates and six dialogues of Plato. He had also read a great deal of history in English and had been taught arithmetic, physics and astronomy. At the age of eight, Mill began studying Latin, the works of Euclid, and algebra, and was appointed schoolmaster to the younger children of the family. His main reading was still history, but he went through all the commonly taught Latin and Greek authors and by the age of ten could read Plato and Demosthenes with ease. His father also thought that it was important for Mill to study and compose poetry. One of his earliest poetic compositions was a continuation of the Iliad. In his spare time he also enjoyed reading about natural sciences and popular novels, such as Don Quixote and Robinson Crusoe. His father's work, The History of British India, was published in 1818; immediately thereafter, at about the age of twelve, Mill began a thorough study of the scholastic logic, at the same time reading Aristotle's logical treatises in the original language. In the following year he was introduced to political economy and studied Adam Smith and David Ricardo with his father, ultimately completing their classical economic view of factors of production. Mill's comptes rendus of his daily economy lessons helped his father in writing Elements of Political Economy in 1821, a textbook to promote the ideas of Ricardian economics; however, the book lacked popular support. Ricardo, who was a close friend of his father, used to invite the young Mill to his house for a walk to talk about political economy. At the age of fourteen, Mill stayed a year in France with the family of Sir Samuel Bentham, brother of Jeremy Bentham and in the company of George Ensor, then pursuing his polemic against the political economy of Thomas Malthus. The mountain scenery he saw led to a lifelong taste for mountain landscapes. The lively and friendly way of life of the French also left a deep impression on him. In Montpellier, he attended the winter courses on chemistry, zoology, logic of the Faculté des Sciences, as well as taking a course in higher mathematics. While coming and going from France, he stayed in Paris for a few days in the house of the renowned economist Jean-Baptiste Say, a friend of Mill's father. There he met many leaders of the Liberal party, as well as other notable Parisians, including Henri Saint-Simon. Mill went through months of sadness and contemplated suicide at twenty years of age. According to the opening paragraphs of Chapter V of his autobiography, he had asked himself whether the creation of a just society, his life's objective, would actually make him happy. His heart answered "no", and unsurprisingly he lost the happiness of striving towards this objective. Eventually, the poetry of William Wordsworth showed him that beauty generates compassion for others and stimulates joy. With renewed vigour, he continued to work towards a just society, but with more relish for the journey. He considered this one of the most pivotal shifts in his thinking. In fact, many of the differences between him and his father stemmed from this expanded source of joy. Mill met Thomas Carlyle during one of the latter's visits to London in the early 1830s, and the two quickly became companions and correspondents. Mill offered to print Carlyle's works at his own expense and encouraged Carlyle to write his French Revolution, supplying him with materials in order to do so. In March 1835, while the manuscript of the completed first volume was in Mill's possession, Mill's housemaid unwittingly used it as tinder, destroying all "except some three or four bits of leaves". Mortified, Mill offered Carlyle £200 (£17,742.16 in 2021) as compensation (Carlyle would only accept £100). Ideological differences would put an end to the friendship during the 1840s, though Carlyle's early influence on Mill would colour his later thought. Mill had been engaged in a pen-friendship with Auguste Comte, the founder of positivism and sociology, since Mill first contacted Comte in November 1841. Comte's sociologie was more an early philosophy of science than modern sociology is. Comte's positivism motivated Mill to eventually reject Bentham's psychological egoism and what he regarded as Bentham's cold, abstract view of human nature focused on legislation and politics, instead coming to favour Comte's more sociable view of human nature focused on historical facts and directed more towards human individuals in all their complexities. As a nonconformist who refused to subscribe to the Thirty-Nine Articles of the Church of England, Mill was not eligible to study at the University of Oxford or the University of Cambridge. Instead he followed his father to work for the East India Company, and attended University College, London, to hear the lectures of John Austin, the first Professor of Jurisprudence. He was elected a foreign honorary member of the American Academy of Arts and Sciences in 1856. Mill's career as a colonial administrator at the East India Company spanned from when he was 17 years old in 1823 until 1858, when the company's territories in India were directly annexed by the Crown, establishing direct Crown control over India. In 1836, he was promoted to the company's political department, where he was responsible for correspondence pertaining to the company's relations with the princely states, and, in 1856, was finally promoted to the position of Examiner of Indian Correspondence. In On Liberty, A Few Words on Non-Intervention, and other works, he opined that "To characterize any conduct whatever towards a barbarous people as a violation of the law of nations, only shows that he who so speaks has never considered the subject." (However, Mill immediately added that "A violation of the great principles of morality it may easily be.") Mill viewed places such as India as having once been progressive in their outlook, but had now become stagnant in their development; he opined that this meant these regions had to be ruled via a form of "benevolent despotism...provided the end is improvement." When the Crown proposed to take direct control over the territories of the East India Company, Mill was tasked with defending Company rule and penned Memorandum on the Improvements in the Administration of India during the Last Thirty Years, among other petitions. He was offered a seat on the Council of India, the body created to advise the new Secretary of State for India, but declined, citing disapproval of the new system of administration in India. On 21 April 1851, Mill married Harriet Taylor after 21 years of intimate friendship. Taylor was married when they met, and their relationship was close but generally believed to be chaste during the years before her first husband died in 1849. The couple waited two years before marrying in 1851. Upon marriage, he made a declaration to repudiate the rights conferred upon him over her by virtue of the marriage under Victorian law. John Stuart Mill and Harriet Taylor Mill were foundational figures in feminist economic thought. Their collaborative works, particularly The Subjection of Women (1869) and Taylor Mill's The Enfranchisement of Women (1851), argued that gender inequality was both a moral injustice and an economic inefficiency (Hansson, 2022; McCabe, 2021). Rejecting classical economic assumptions that marginalized women, they advocated for legal reforms, educational access, and women's autonomy. Their ideas laid groundwork for modern feminist economists who critique unpaid labor, gender wage gaps, and structural oppression (Munte & Monica, 2023; Knüfer, 2023). Taylor Mill's Unitarian and rationalist views enriched this critique, while stylometric evidence supports her significant role in Mill's writings (Schmidt-Petri et al., 2021). Today, their arguments resonate in debates on digital capitalism, care work, and reproductive rights, offering a lens to assess economic justice through the interplay of gender, labor, and autonomy (Hampton, 2021; Smajdor, 2021). Accomplished in her own right, Taylor was a significant influence on Mill's work and ideas during both friendship and marriage. His relationship with Taylor reinforced Mill's advocacy of women's rights. He said that in his stand against domestic violence, and for women's rights he was "chiefly an amanuensis to my wife". He called her mind a "perfect instrument", and said she was "the most eminently qualified of all those known to the author". He cites her influence in his final revision of On Liberty, which was published shortly after her death. Taylor died in 1858 after developing severe lung congestion, after only seven years of marriage to Mill. Between the years 1865 and 1868 Mill served as Lord Rector of the University of St Andrews. At his inaugural address, delivered to the university on 1 February 1867, he made the now-famous (but often wrongly attributed) remark that "Bad men need nothing more to compass their ends, than that good men should look on and do nothing." That Mill included that sentence in the address is a matter of historical record, but it by no means follows that it expressed a wholly original insight. During the same period, 1865–68, he was also a Member of Parliament (MP) for City of Westminster. He was sitting for the Liberal Party. During his time as an MP, Mill advocated easing the burdens on Ireland. In 1866, he became the second person in the history of Parliament, after Henry Hunt, to call for women to be given the right to vote, vigorously defending this position in subsequent debate. He also became a strong advocate of such social reforms as labour unions and farm cooperatives. In Considerations on Representative Government, he called for various reforms of Parliament and voting, especially proportional representation, the single transferable vote, and the extension of suffrage. In April 1868, he favoured in a Commons debate the retention of capital punishment for such crimes as aggravated murder; he termed its abolition "an effeminacy in the general mind of the country". (It is said in 1868, when his first term ended, no party would nominate him due to his independent spirit.) He was elected to membership of the American Philosophical Society in 1867. He was godfather to the philosopher Bertrand Russell. In his views on religion, Mill was an agnostic and a sceptic. Like other philosophers of his time, Mill was interested in botany. It is believed that approximately 1,000 of his specimens are held by the Museum Requien in Avignon, France, and Mill's stepdaughter, Helen Taylor, donated specimens to the Kew Herbarium after his death. In the southern hemisphere, there are also specimens at the National Herbarium of Victoria, Royal Botanic Gardens Victoria, Australia. Mill died on 7 May 1873, at the age of 66, of erysipelas in Avignon, where his body was buried alongside his wife's. He bequeathed his estate to his step-daughter, Helen Taylor, and designated her his literary executor. Works and theories Mill believed that for the majority of people (those with but a moderate degree of sensibility and of capacity for enjoyment) happiness is best achieved en passant, rather than striving for it directly. This meant no self-consciousness, scrutiny, self-interrogation, dwelling on, thinking about, imagining or questioning on one's happiness. Then, if otherwise fortunately circumstanced, one would "inhale happiness with the air you breathe." Mill joined the debate over the scientific method which followed on from John Herschel's 1830 publication of A Preliminary Discourse on the Study of Natural Philosophy, which incorporated inductive reasoning from the known to the unknown, discovering general laws in specific facts and verifying these laws empirically. William Whewell expanded on this in his 1837 History of the Inductive Sciences, from the Earliest to the Present Time, followed in 1840 by The Philosophy of the Inductive Sciences, Founded Upon their History, presenting induction as the mind superimposing concepts on facts. Laws were self-evident truths, which could be known without need for empirical verification. Mill countered this in 1843 in A System of Logic (fully titled A System of Logic, Ratiocinative and Inductive, Being a Connected View of the Principles of Evidence, and the Methods of Scientific Investigation). In "Mill's Methods" (of induction), as in Herschel's, laws were discovered through observation and induction, and required empirical verification. Matilal remarks that Dignāga analysis is much like John Stuart Mill's Joint Method of Agreement and Difference, which is inductive. He suggested that it was very likely that during his stay in India he came across the tradition of logic, in which scholars started taking interest after 1824, though it is unknown whether it influenced his work. Like his father James, Mill was a supporter of British colonialism. He was a member of Edward Gibbon Wakefield's Colonization Society, and in his own work, Principles of Political Economy (1848), he praised Wakefield for his "important writings on colonization". Later on in his essay On Liberty (1859) he stated that the principles of liberty espoused therein did not apply to "those backward states of society in which the race itself may be considered as in its nonage". Mill praised the colonies of ancient Greece for "flourishing so rapidly and so wonderfully", seeing them as a model to be emulated. Mill, an employee of the East India Company from 1823 to 1858, argued in support of what he called a "benevolent despotism" with regard to the administration of overseas colonies. Mill argued: To suppose that the same international customs, and the same rules of international morality, can obtain between one civilized nation and another, and between civilized nations and barbarians, is a grave error. ... To characterize any conduct whatever towards a barbarous people as a violation of the law of nations, only shows that he who so speaks has never considered the subject. For Mill, India was "a burden" for England and British colonialism "a blessing of unspeakable magnitude to the population" of India. He also stated his support for settler colonialism. Mill expressed general support for Company rule in India, but expressed reservations on specific Company policies in India which he disagreed with. He also supported colonialism in other places, such as Australia. Mill was among the founding members of the South Australian Association in 1833, which was set up to lobby the government to establish colonies in Australia. Mill saw federal systems of politics as a solution to contemporary political crises and as an ideal for the future organization of humanity. Mill's early economic philosophy was one of free markets. However, he accepted interventions in the economy, such as a tax on alcohol, if there were sufficient utilitarian grounds. He also accepted the principle of legislative intervention for the purpose of animal welfare. He originally believed that "equality of taxation" meant "equality of sacrifice" and that progressive taxation penalized those who worked harder and saved more and was therefore "a mild form of robbery". Given an equal tax rate regardless of income, Mill agreed that inheritance should be taxed. A utilitarian society would agree that everyone should be equal one way or another. Therefore, receiving inheritance would put one ahead of society unless taxed on the inheritance. Those who donate should consider and choose carefully where their money goes—some charities are more deserving than others. Considering public charities boards such as a government will disburse the money equally. However, a private charity board like a church would disburse the monies fairly to those who are in more need than others.[page needed] Later he altered his views toward a more socialist bent, adding chapters to his Principles of Political Economy in defence of a socialist outlook, and defending some socialist causes. Within this revised work he also made the radical proposal that the whole wage system be abolished in favour of a co-operative wage system. Nonetheless, some of his views on the idea of flat taxation remained, albeit altered in the third edition of the Principles of Political Economy to reflect a concern for differentiating restrictions on "unearned" incomes, which he favoured, and those on "earned" incomes, which he did not favour. In his autobiography, Mill stated that in relation to his later views on political economy, his "ideal of ultimate improvement... would class [him] decidedly under the general designation of Socialists." His views shifted partly due to reading the works of utopian socialists, but also from the influence of Harriet Taylor. In his 1879 work Socialism, Mill argued that the prevalence of poverty in contemporary industrial capitalist societies was "pro tanto a failure of the social arrangements", and that attempts to condone this state of affairs as being the result of individual failings did not represent a justification of them but instead were "an irresistible claim upon every human being for protection against suffering". Mill's Principles, first published in 1848, was one of the most widely read of all books on economics in the period. As Adam Smith's Wealth of Nations had during an earlier period, Principles came to dominate economics teaching. In the case of Oxford University it was the standard text until 1919, when it was replaced by Marshall's Principles of Economics. Karl Marx, in his critique of political economy, mentioned Mill in the Grundrisse. Marx contended that Mill's thinking posited the categories of capital in an ahistorical fashion. Thomas Babington Macaulay argued that, like the Scholastic philosophers whose methods the scientific revolution superseded and discredited, Mill relied too often upon deduction from propositions whose truth was deemed axiomatic, rather than upon observed facts gleaned from practical experience. Trade unions Other Mill's main objection to socialism focused on what he saw as its destruction of competition. He wrote, "[W]hile I agree and sympathize with socialists in this practical portion of their aims, I utterly dissent from the most conspicuous and vehement part of their teaching—their declamations against competition." Though he was an egalitarian, Mill argued more for equal opportunity and placed meritocracy above all other ideals in this regard. He further argued that a socialist society would only be attainable through the provision of basic education for all, promoting economic democracy instead of capitalism, in the manner of substituting capitalist businesses with worker cooperatives. He wrote: The form of association, however, which if mankind continue to improve, must be expected in the end to predominate, is not that which can exist between a capitalist as chief, and work-people without a voice in the management, but the association of the labourers themselves on terms of equality, collectively owning the capital with which they carry on their operations, and working under managers elected and removable by themselves. In his later thought, he advocated for a cooperative economic order, an economy based on enterprises run by workers themselves in an open market, rather than the employment-wage relationship of capitalist companies, and Mill's ideas led him to be classified as an early proponent of market socialism theory. Mill's major work on political democracy, Considerations on Representative Government, defends two fundamental principles: extensive participation by citizens and enlightened competence of rulers. The two values are obviously in tension, and some readers have concluded that he is an elitist democrat, while others count him as an earlier participatory democrat. In one section, he appears to defend a type of plural voting where more competent citizens are given extra votes (a view he later repudiated). However, in another chapter he argues cogently for the value of participation by all citizens. He believed that the incompetence of the masses could eventually be overcome if they were given a chance to take part in politics, especially at the local level. Mill is one of the few political philosophers ever to serve in government as an elected official. In his three years in Parliament, he was more willing to compromise than the "radical" principles expressed in his writing would lead one to expect. Mill was a major proponent of the diffusion and use of public education to the working class. He saw the value of the individual person, and believed that "man had the inherent capability of guiding his own destiny-but only if his faculties were developed and fulfilled", which could be achieved through education. He regarded education as a pathway to improve human nature which to him meant "to encourage, among other characteristics, diversity and originality, the energy of character, initiative, autonomy, intellectual cultivation, aesthetic sensibility, non-self-regarding interests, prudence, responsibility, and self-control." Education allowed for humans to develop into full informed citizens that had the tools to improve their condition and make fully informed electoral decisions. The power of education lay in its ability to serve as a great equalizer among the classes allowing the working class the ability to control their own destiny and compete with the upper classes. Mill recognised the paramount importance of public education in avoiding the tyranny of the majority by ensuring that all the voters and political participants were fully developed individuals. It was through education, he believed, that an individual could become a full participant within representative democracy. In regards to higher education, Mill defended liberal education against contemporary arguments for models of higher education focused on religion or science. His 1867 St. Andrews Address called on elites educated in reformed universities to work towards education policy committed to liberal principles. In Principles of Political Economy, Mill offered an analysis of two economic phenomena often linked together: the laws of production and wealth and the modes of their distribution. Regarding the former, he believed that it was not possible to alter the laws of production, "the ultimate properties of matter and mind... only to employ these properties to bring about events we are interested in." The modes of distribution of wealth is a matter of human institutions solely, starting with what Mill believed to be the primary and fundamental institution: Individual Property. He believed that all individuals must start on equal terms, with division of the instruments of production fairly among all members of society. Once each member has an equal amount of individual property, they must be left to their own exertion not to be interfered with by the state. Regarding inequality of wealth, Mill believed that it was the role of the government to establish both social and economic policies that promote the equality of opportunity. The government, according to Mill, should implement three tax policies to help alleviate poverty: Inheritance of capital and wealth plays a large role in the development of inequality, because it provides greater opportunity for those receiving the inheritance. Mill's solution to inequality of wealth brought about by inheritance was to implement a greater tax on inheritances, because he believed the most important authoritative function of the government is taxation, and taxation judiciously implemented could promote equality. In Book IV, chapter VI of Principles of Political Economy: "Of the Stationary State", Mill recognised wealth beyond the material and argued that the logical conclusion of unlimited growth was destruction of the environment and a reduced quality of life. He concluded that a stationary state could be preferable to unending economic growth: I cannot, therefore, regard the stationary states of capital and wealth with the unaffected aversion so generally manifested towards it by political economists of the old school. If the earth must lose that great portion of its pleasantness which it owes to things that the unlimited increase of wealth and population would extirpate from it, for the mere purpose of enabling it to support a larger, but not a better or a happier population, I sincerely hope, for the sake of posterity, that they will be content to be stationary, long before necessity compel them to it. According to Mill, the ultimate tendency in an economy is for the rate of profit to decline due to diminishing returns in agriculture and increase in population at a Malthusian rate. In 1850, Mill sent an anonymous letter in rebuttal to Thomas Carlyle's letter to Fraser's Magazine for Town and Country (which came to be known under the title "The Negro Question"), in which Carlyle argued for slavery. Mill supported abolishing slavery in the United States, expressing his opposition to slavery in his essay of 1869, The Subjection of Women: This absolutely extreme case of the law of force, condemned by those who can tolerate almost every other form of arbitrary power, and which, of all others, presents features the most revolting to the feeling of all who look at it from an impartial position, was the law of civilized and Christian England within the memory of persons now living: and in one half of Anglo-Saxon America three or four years ago, not only did slavery exist, but the slave trade, and the breeding of slaves expressly for it, was a general practice between slave states. Yet not only was there a greater strength of sentiment against it, but, in England at least, a less amount either of feeling or of interest in favour of it, than of any other of the customary abuses of force: for its motive was the love of gain, unmixed and undisguised: and those who profited by it were a very small numerical fraction of the country, while the natural feeling of all who were not personally interested in it, was unmitigated abhorrence. Mill corresponded with John Appleton, an American legal reformer from Maine, extensively on the topic of racial equality. Appleton influenced Mill's work on such, especially swaying him on the optimal economic and social welfare plan for the Antebellum South. In a letter sent to Appleton in response to a previous letter, Mill expressed his view on antebellum integration: I cannot look forward with satisfaction to any settlement but complete emancipation—land given to every negro family either separately or in organized communities under such rules as may be found temporarily necessary—the schoolmaster set to work in every village & the tide of free immigration turned on in those fertile regions from which slavery has hitherto excluded it. If this be done, the gentle & docile character which seems to distinguish the negroes will prevent any mischief on their side, while the proofs they are giving of fighting powers will do more in a year than all other things in a century to make the whites respect them & consent to their being politically & socially equals. Unlike many of his peers, Mill supported the Union in the American Civil War, seeing it as a necessary evil that would deliver a vital "salutary shock" to the national conscience and help preserve liberal ideals while eradicating the "stain" of slavery in the United States. Mill expressed his views in an article for Fraser's Magazine, arguing against the defenders of the Confederate States of America. There are people who tell us that, on the side of the North, the question is not one of slavery at all. The North, it seems, have no more objection to slavery than the South have. [...] If this be the true state of the case, what are the Southern chiefs fighting about? Their apologists in England say that it is about tariffs, and similar trumpery. They say nothing of the kind. They tell the world, and they told their own citizens when they wanted their votes, that the object of the fight was slavery. [...] The world knows what the question between the North and South has been for many years, and still is. Slavery alone was thought of, alone talked of. Mill's On Liberty (1859) addresses the nature and limits of the power that can be legitimately exercised by society over the individual. Mill's idea is that only if a democratic society follows the Principle of Liberty can its political and social institutions fulfill their role of shaping national character so that its citizens can realise the permanent interests of people as progressive beings. (Rawls, Lectures on the History of Political Philosophy, p. 289) Mill states the Principle of Liberty as: "the sole end for which mankind are warranted, individually or collectively, in interfering with the liberty of action of any of their number, is self-protection." "The only purpose for which power can be rightfully exercised over any member of a civilised community, against his will, is to prevent harm to others. His own good, either physical or moral, is not a sufficient warrant." One way to read Mill's Principle of Liberty as a principle of public reason is to see it excluding certain kinds of reasons from being taken into account in legislation, or in guiding the moral coercion of public opinion. (Rawls, Lectures on the History of Political Philosophy, p. 291) These reasons include those founded in other persons good; reasons of excellence and ideals of human perfection; reasons of dislike or disgust, or of preference. Mill states that "harms" which may be prevented include acts of omission as well as acts of commission. Thus, failing to rescue a drowning child counts as a harmful act, as does failing to pay taxes, or failing to appear as a witness in court. All such harmful omissions may be regulated, according to Mill. By contrast, it does not count as harming someone if—without force or fraud—the affected individual consents to assume the risk: thus one may permissibly offer unsafe employment to others, provided there is no deception involved. He does, however, recognise one limit to consent: society should not permit people to sell themselves into slavery. The question of what counts as a self-regarding action and what actions, whether of omission or commission, constitute harmful actions subject to regulation, continues to exercise interpreters of Mill. He did not consider giving offence to constitute "harm"; an action could not be restricted because it violated the conventions or morals of a given society. Mill believed that "the struggle between Liberty and Authority is the most conspicuous feature in the portions of history." For him, liberty in antiquity was a "contest...between subjects, or some classes of subjects, and the government." Mill defined social liberty as protection from "the tyranny of political rulers". He introduced a number of different concepts of the form tyranny can take, referred to as social tyranny, and tyranny of the majority. Social liberty for Mill meant putting limits on the ruler's power so that he would not be able to use that power to further his own wishes and thus make decisions that could harm society. In other words, people should have the right to have a say in the government's decisions. He said that social liberty was "the nature and limits of the power which can be legitimately exercised by society over the individual." It was attempted in two ways: first, by obtaining recognition of certain immunities (called political liberties or rights); and second, by establishment of a system of "constitutional checks". However, in Mill's view, limiting the power of government was not enough: Society can and does execute its own mandates: and if it issues wrong mandates instead of right, or any mandates at all in things with which it ought not to meddle, it practises a social tyranny more formidable than many kinds of political oppression, since, though not usually upheld by such extreme penalties, it leaves fewer means of escape, penetrating much more deeply into the details of life, and enslaving the soul itself. Mill's view on liberty, which was influenced by Joseph Priestley and Josiah Warren, is that individuals ought to be free to do as they wished unless they caused harm to others. Individuals are rational enough to make decisions about their well-being. Government should interfere when it is for the protection of society. Mill explained: The sole end for which mankind are warranted, individually or collectively, in interfering with the liberty of action of any of their number, is self-protection. That the only purpose for which power can be rightfully exercised over any member of a civilized community, against his will, is to prevent harm to others. His own good, either physical or moral, is not sufficient warrant. He cannot rightfully be compelled to do or forbear because it will be better for him to do so, because it will make him happier, because, in the opinion of others, to do so would be wise, or even right. ... The only part of the conduct of anyone, for which he is amenable to society, is that which concerns others. In the part which merely concerns him, his independence is, of right, absolute. Over himself, over his own body and mind, the individual is sovereign. On Liberty involves an impassioned defence of free speech. Mill argues that free discourse is a necessary condition for intellectual and social progress. We can never be sure, he contends, that a silenced opinion does not contain some element of the truth. He also argues that allowing people to air false opinions is productive for two reasons. First, individuals are more likely to abandon erroneous beliefs if they are engaged in an open exchange of ideas. Second, by forcing other individuals to re-examine and re-affirm their beliefs in the process of debate, these beliefs are kept from declining into mere dogma. It is not enough for Mill that one simply has an unexamined belief that happens to be true; one must understand why the belief in question is the true one. Along those same lines Mill wrote, "unmeasured vituperation, employed on the side of prevailing opinion, really does deter people from expressing contrary opinions, and from listening to those who express them.": 51 As an influential advocate of freedom of speech, Mill objected to censorship: I choose, by preference the cases which are least favourable to me—in which the argument opposing freedom of opinion, both on truth and that of utility, is considered the strongest. Let the opinions impugned be the belief in God and in a future state, or any of the commonly received doctrines of morality. ... But I must be permitted to observe, that it is not the feeling sure of a doctrine (be it what it may) which I call an assumption of infallibility. It is the undertaking to decide that question for others, without allowing them to hear what can be said on the contrary side. And I denounce and reprobate this pretension not the less, if put forth on the side of my most solemn convictions. However positive any one's persuasion may be, not only of the falsity, but of the pernicious consequences–not only of the pernicious consequences, but (to adopt expressions which I altogether condemn) the immorality and impiety of an opinion; yet if, in pursuance of that private judgment, though backed by the public judgment of his country or his contemporaries, he prevents the opinion from being heard in its defence, he assumes infallibility. And so far from the assumption being less objectionable or less dangerous because the opinion is called immoral or impious, this is the case of all others in which it is most fatal. Mill outlines the benefits of "searching for and discovering the truth" as a way to further knowledge. He argued that even if an opinion is false, the truth can be better understood by refuting the error. And as most opinions are neither completely true nor completely false, he points out that allowing free expression allows the airing of competing views as a way to preserve partial truth in various opinions. Worried about minority views being suppressed, he argued in support of freedom of speech on political grounds, stating that it is a critical component for a representative government to have to empower debate over public policy. He also eloquently argued that freedom of expression allows for personal growth and self-realization. He said that freedom of speech was a vital way to develop talents and realise a person's potential and creativity. He repeatedly said that eccentricity was preferable to uniformity and stagnation. The belief that freedom of speech would advance society presupposed a society sufficiently culturally and institutionally advanced to be capable of progressive improvement. If any argument is really wrong or harmful, the public will judge it as wrong or harmful, and then those arguments cannot be sustained and will be excluded. Mill argued that even any arguments which are used in justifying murder or rebellion against the government should not be politically suppressed or socially persecuted. According to him, if rebellion is really necessary, people should rebel; if murder is truly proper, it should be allowed. However, the way to express those arguments should be a public speech or writing, not in a way that causes actual harm to others. Such is the harm principle: "That the only purpose for which power can be rightfully exercised over any member of a civilized community, against his will, is to prevent harm to others." At the beginning of the 20th century, Associate justice Oliver Wendell Holmes Jr. made the standard of "clear and present danger" based on Mill's idea. In the majority opinion, Holmes writes: The question in every case is whether the words used are used in such circumstances and are of such a nature as to create a clear and present danger that they will bring about the substantive evils that Congress has a right to prevent. Holmes suggested that falsely shouting out "Fire!" in a dark theatre, which evokes panic and provokes injury, would be such a case of speech that creates an illegal danger. But if the situation allows people to reason by themselves and decide to accept it or not, any argument or theology should not be blocked. Here is Mill on the same topic: "No one pretends that actions should be as free as opinions. On the contrary, even opinions lose their immunity, when the circumstances in which they are expressed are such as to constitute their expression a positive instigation to some mischievous act. An opinion that corn-dealers are starvers of the poor, or that private property is robbery, ought to be unmolested when simply circulated through the press, but may justly incur punishment when delivered orally to an excited mob assembled before the house of a corn-dealer, or when handed about among the same mob in the form of a placard" (On LIberty, chapter 3). Mill's argument is now generally accepted by many democratic countries, and they have laws at least guided by the harm principle. For example, in American law some exceptions limit free speech such as obscenity, defamation, breach of peace, and "fighting words". In On Liberty, Mill thought it was necessary for him to restate the case for press freedom. He considered that argument already won. Almost no politician or commentator in mid-19th-century Britain wanted a return to Tudor and Stuart-type press censorship. However, Mill warned new forms of censorship could emerge in the future. Indeed, in 2013 the Cameron Tory government considered setting up an independent official regulator of the UK press. This prompted demands for better basic legal protection of press freedom. A new British Bill of Rights could include a US-type constitutional ban on governmental infringement of press freedom and block other official attempts to control freedom of opinion and expression. The canonical statement of Mill's utilitarianism can be found in his book, Utilitarianism. Although this philosophy has a long tradition, Mill's account is primarily influenced by Jeremy Bentham and Mill's father James Mill. John Stuart Mill believed in the philosophy of utilitarianism, which he would describe as the principle that holds "that actions are right in the proportion as they tend to promote happiness, wrong as they tend to produce the reverse of happiness." By happiness he means, "intended pleasure, and the absence of pain; by unhappiness, pain, and the privation of pleasure". It is clear that we do not all value virtues as a path to happiness and that we sometimes only value them for selfish reasons. However, Mill asserts that upon reflection, even when we value virtues for selfish reasons we are in fact cherishing them as a part of our happiness. Bentham's famous formulation of utilitarianism is known as the greatest-happiness principle. It holds that one must always act so as to produce the greatest aggregate happiness among all sentient beings, within reason. In a similar vein, Mill's method of determining the best utility is that a moral agent, when given the choice between two or more actions, ought to choose the action that contributes most to (maximizes) the total happiness in the world. Happiness, in this context, is understood as the production of pleasure or privation of pain. Given that determining the action that produces the most utility is not always so clear-cut, Mill suggests that the utilitarian moral agent, when attempting to rank the utility of different actions, should refer to the general experience of persons. That is, if people generally experience more happiness following action X than they do action Y, the utilitarian should conclude that action X produces more utility than action Y, and so is to be preferred. Utilitarianism is a consequentialist ethical theory, meaning that it holds that acts are justified insofar as they produce a desirable outcome. The overarching goal of utilitarianism—the ideal consequence—is to achieve the "greatest good for the greatest number as the result of human action". In Utilitarianism, Mill states that "happiness is the sole end of human action." This statement aroused some controversy, which is why Mill took it a step further, explaining how the very nature of humans wanting happiness, and who "take it to be reasonable under free consideration", demands that happiness is indeed desirable. In other words, free will leads everyone to make actions inclined on their own happiness, unless reasoned that it would improve the happiness of others, in which case, the greatest utility is still being achieved. To that extent, the utilitarianism that Mill is describing is a default lifestyle that he believes is what people who have not studied a specific opposing field of ethics would naturally and unconsciously use when faced with a decision. Utilitarianism is thought of by some of its activists to be a more developed and overarching ethical theory of Immanuel Kant's belief in goodwill, and not just some default cognitive process of humans. Where Kant (1724–1804) would argue that reason can only be used properly by goodwill, Mill would say that the only way to universally create fair laws and systems would be to step back to the consequences, whereby Kant's ethical theories become based around the ultimate good—utility. By this logic the only valid way to discern what is the proper reason would be to view the consequences of any action and weigh the good and the bad, even if on the surface, the ethical reasoning seems to indicate a different train of thought. Mill's major contribution to utilitarianism is his argument for the qualitative separation of pleasures. Bentham treats all forms of happiness as equal, whereas Mill argues that intellectual and moral pleasures (higher pleasures) are superior to more physical forms of pleasure (lower pleasures). He distinguishes between happiness and contentment, claiming that the former is of higher value than the latter, a belief wittily encapsulated in the statement that, "it is better to be a human being dissatisfied than a pig satisfied; better to be Socrates dissatisfied than a fool satisfied. And if the fool, or the pig, are of a different opinion, it is because they only know their own side of the question." This made Mill believe that "our only ultimate end" is happiness. One unique part of his utilitarian view, that is not seen in others, is the idea of higher and lower pleasures. Mill explains the different pleasures as: If I am asked, what I mean by difference of quality in pleasures, or what makes one pleasure more valuable than another, merely as a pleasure, except its being greater in amount, there is but one possible answer. Of two pleasures, if there be one to which all or almost all who have experience of both give a decided preference [...] that is the more desirable pleasure. He defines higher pleasures as mental, moral, and aesthetic pleasures, and lower pleasures as being more sensational. He believed that higher pleasures should be seen as preferable to lower pleasures since they have a greater quality in virtue. He holds that pleasures gained in activity are of a higher quality than those gained passively. Mill defines the difference between higher and lower forms of pleasure with the principle that those who have experienced both tend to prefer one over the other. This is, perhaps, in direct contrast with Bentham's statement that "Quantity of pleasure being equal, push-pin is as good as poetry", that, if a simple child's game like hopscotch causes more pleasure to more people than a night at the opera house, it is more incumbent upon a society to devote more resources to propagating hopscotch than running opera houses. Mill's argument is that the "simple pleasures" tend to be preferred by people who have no experience with high art, and are therefore not in a proper position to judge. He also argues that people who, for example, are noble or practise philosophy, benefit society more than those who engage in individualist practices for pleasure, which are lower forms of happiness. It is not the agent's own greatest happiness that matters "but the greatest amount of happiness altogether". Mill separated his explanation of Utilitarianism into five different sections: In the "General Remarks" portion of his essay, he speaks about how next to no progress has been made when it comes to judging what is right and what is wrong in morality and if there is such a thing as moral instinct (which he argues that there may not be). However, he agrees that in general, "Our moral faculty, according to all those of its interpreters who are entitled to the name of thinkers, supplies us only with the general principles of moral judgments." In "What Utilitarianism Is", he focuses no longer on background information but on utilitarianism itself. He quotes utilitarianism as "the greatest happiness principle", defining this theory by saying that pleasure and no pain are the only inherently good things in the world and expands on it by saying that "actions are right in proportion as they tend to promote happiness, wrong as they tend to produce the reverse of happiness. By happiness is intended pleasure, and the absence of pain; by unhappiness, pain, and the privation of pleasure." He views it not as an animalistic concept because he sees seeking out pleasure as a way of using our higher facilities. He also says in this chapter that the happiness principle is based not exclusively on the individual but mainly on the community. Mill also defends the idea of a "strong utilitarian conscience (i.e., a strong feeling of obligation to the general happiness)". He argued that humans have a desire to be happy and that that desire causes us to want to be in unity with other humans. This causes us to care about the happiness of others, as well as the happiness of complete strangers. But this desire also causes us to experience pain when we perceive harm to other people. He believes in internal sanctions that make us experience guilt and appropriate our actions. These internal sanctions make us want to do good because we do not want to feel guilty for our actions. Happiness is our ultimate end because it is our duty. He argues that we do not need to be constantly motivated by the concern of people's happiness because most of the actions done by people are done out of good intention, and the good of the world is made up of the good of the people. In Mill's fourth chapter, "Of What Sort of Proof the Principle of Utility is Susceptible", he speaks of what proofs of Utility are affected. He starts this chapter off by saying that all of his claims cannot be backed up by reasoning. He claims that the only proof that something brings one pleasure is if someone finds it pleasurable. Next, he talks about how morality is the basic way to achieve happiness. He also discusses in this chapter that utilitarianism is beneficial for virtue. He says that "it maintains not only that virtue is to be desired, but that it is to be desired disinterestedly, for itself." In his final chapter he looks at the connection between utilitarianism and justice. He contemplates the question of whether justice is something distinct from utility or not. He reasons this question in several different ways and finally comes to the conclusion that in certain cases justice is essential for utility, but in others, social duty is far more important than justice. Mill believes that "justice must give way to some other moral principle, but that what is just in ordinary cases is, by reason of that other principle, not just in the particular case." The qualitative account of happiness that Mill advocates thus sheds light on his account presented in On Liberty. As he suggests in that text, utility is to be conceived in relation to humanity "as a progressive being", which includes the development and exercise of rational capacities as we strive to achieve a "higher mode of existence". The rejection of censorship and paternalism is intended to provide the necessary social conditions for the achievement of knowledge and the greatest ability for the greatest number to develop and exercise their deliberative and rational capacities. Mill redefines the definition of happiness as "the ultimate end, for the sake of which all other things are desirable (whether we are considering our own good or that of other people) is an existence as free as possible from pain and as rich as possible in enjoyments." He firmly believed that moral rules and obligations could be referenced to promoting happiness, which connects to having a noble character. While Mill is not a standard act utilitarian or rule utilitarian, he is a minimizing utilitarian, which "affirms that it would be desirable to maximize happiness for the greatest number, but not that we are morally required to do so." Mill's view of history was that right up until his time "the whole of the female" and "the great majority of the male sex" were simply "slaves". He countered arguments to the contrary, arguing that relations between sexes simply amounted to "the legal subordination of one sex to the other – [which] is wrong itself, and now one of the chief hindrances to human improvement; and that it ought to be replaced by a principle of perfect equality." Here, then, we have an instance of Mill's use of "slavery" in a sense which, compared to its fundamental meaning of absolute unfreedom of person, is an extended and arguably a rhetorical rather than a literal sense. With this, Mill can be considered among the earliest male proponents of gender equality, having been recruited by American feminist John Neal during his stay in London circa 1825–1827. His book The Subjection of Women (1861, publ.1869) is one of the earliest written on this subject by a male author. In The Subjection of Women, Mill attempts to make a case for perfect equality. In his proposal for a universal education system sponsored by the state, Mill expands benefits for many marginalized groups, especially for women. For Mill, a universal education held the potential to create new abilities and novel types of behaviour of which the current receiving generation and their descendants could both benefit from. Such a pathway to opportunity would enable women to gain "industrial and social independence" that would allow them the same movement in their agency and citizenship as men. Mill's view of opportunity stands out in its reach, but even more so for the population he foresees who could benefit from it. Mill was hopeful of the autonomy such an education could allow for its recipients and especially for women. Through the consequential sophistication and knowledge attained, individuals are able to properly act in ways that recedes away from those leading towards overpopulation. This stands directly in contrast with the view held by many of Mill's contemporaries and predecessors who viewed such inclusive programs to be counter-intuitive. Aiming such help at marginalized groups, such as the poor and working class, would only serve to reward them with the opportunity to move to a higher status, thus encouraging greater fertility which at its extreme could lead to overproduction. He talks about the role of women in marriage and how it must be changed. Mill comments on three major facets of women's lives that he felt are hindering them: He argues that the oppression of women was one of the few remaining relics from ancient times, a set of prejudices that severely impeded the progress of humanity. As a Member of Parliament, Mill introduced an unsuccessful amendment to the Reform Bill to substitute the word "person" in place of "man". Major publications See also Notes References Further reading External links
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Contents Z++ Z++ (pronounced zed, or zee in American pronunciation, plus plus) is an object-oriented extension to the Z specification language. Z++ allows for the definition of classes, and the relation of classes through inheritance, association, or aggregation. The primary construct of Z++ is a class. A Z++ class consists of a number of clauses which are optional. Z++ class structure See also References This programming-language-related article is a stub. You can help Wikipedia by adding missing information.
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Contents New Hope (Israel) New Hope (Hebrew: תִּקְוָוה חֲדָשָׁה, romanized: Tikva Hadasha), officially known as New Hope – The National Right (Hebrew: תִּקְוָוה חֲדָשָׁה הימין הממלכתי, romanized: Tikva Hadasha HaYamin HaMamlakhti), and also translated as New Hope – The United Right, is a centre-right to right-wing national-liberal political party in Israel. History The party was formed by former Likud MK and former minister Gideon Sa'ar on 8 December 2020, with Sa'ar subsequently submitting his resignation from the Knesset on 9 December. On the same day, Derekh Eretz MKs Yoaz Hendel and Zvi Hauser announced that they would join New Hope. Likud MKs Yifat Shasha-Biton, Michal Shir, Sharren Haskel, and Ze'ev Elkin later joined as well. Meir Yitzhak Halevi joined the party on 28 December. Benny Begin and Dani Dayan joined on 21 January 2021, whilst MK Hila Vazan joined on 31 January. The party signed a surplus-vote agreement with Yamina on 4 January 2021. On 10 July 2022, New Hope formed a joint list with Blue and White, led by Benny Gantz, ahead of the upcoming legislative election. The next month, the name of the joint list, National Unity, was announced. In October 2023, National Unity joined the Thirty-seventh government of Israel and the Israeli war cabinet in the aftermath of the 2023 Hamas-led attack on Israel. Sa'ar announced on 12 March 2024 that New Hope would again be an independent faction, which was approved by the Knesset House committee the following night. Sa'ar stated on 16 March that his party would resign from the government and join the opposition if Prime Minister Benjamin Netanyahu did not appoint him to the Israeli war cabinet. Sa'ar announced on 25 March that his party had resigned from the government. The party rejoined the Netanyahu government in September 2024, with Sa'ar joining the cabinet as Foreign Minister. The party subsequently signed a merger agreement with Likud in March 2025, which will go into effect before the next election. The Likud Central Committee approved New Hope's merger back into the party in August 2025. Policy Defunct New Hope sees the State of Israel as the nation state of the Jewish people and sees importance in military, economic, technological, research, settlement aspects of the state, with support for Jewish immigration to Israel. The party sees social divisions in Israel as problematic and promises to work for reconciliation and connection between parts of the nation. On social issues, the party advocates for legalisation of cannabis and LGBT rights. The party supports a partially mixed economy with a strong and partially subsidized capitalist focus. It advocates an expansion of the technological sector and of Israel's infrastructure, as well as supporting a reduction in the size of the country's bureaucracy. It also supports an expansion of Israel's social safety net, and grants for small businesses. New Hope supports term limits, with a proposal to limit the tenure of a prime minister to eight years. In addition, their platform includes a proposal to elect the Knesset via mixed-member representation. The party is also interested in increasing the powers of local government at the expense of the powers of the central government. Leaders Election results Knesset members References External links
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Contents Netanya Netanya (Hebrew: נתניה, IPA: [netanˈja]), or Natanya (IPA: [naˈtanja]), is a city in the Central District of Israel, and is the capital of the surrounding Sharon plain. It is 30 kilometres (20 mi) north of Tel Aviv, and 56 km (35 mi) south of Haifa, between the Poleg stream and the Wingate Institute in the south and the Avihayil stream in the north. Netanya was named in honor of Nathan Straus, a prominent Jewish American merchant and philanthropist in the early 20th century who was the co-owner of Macy's department store. The 14 km (8+1⁄2 mi) of beaches have made the city a popular tourist resort. In 2023, Netanya had a population of 233,485, ranking it as the 7th largest city in Israel by population. An additional 150,000 people live in the local and regional councils within ten kilometres (six miles) of Netanya, which serves as a regional center for them. The city mayor was Miriam Feirberg, who died in 2025. History Before the 20th century, parts of Netanya belonged to the Forest of Sharon, a hallmark of the region's historical landscape. It was an open woodland dominated by Mount Tabor Oak (Quercus ithaburensis), which extended from Kfar Yona in the north to Ra'anana in the south. Arabs who lived in the area used it for pasture, firewood and intermittent cultivation. The intensification of settlement and agriculture in the coastal plain during the 19th century led to deforestation and subsequent environmental degradation known from Hebrew sources. Netanya was established near the ancient site of Poleg by the Bnei Binyamin association in Zikhron Ya'akov. It was named in honor of Nathan (Hebrew: Natan) Straus (1848–1931), co-owner of Macy's department store, New York City Parks Commissioner, and president of the New York City Board of Health, who gifted two-thirds of his personal fortune to projects benefiting Jews and Arabs in Mandatory Palestine. "Netanya...was named for Straus in the hope he would donate money to them. When he told them he had no more money to give they were disappointed, but decided to keep the city's name anyway." The funds for the project of building Netanya were raised by Itamar Ben-Avi and Oved Ben-Ami, who embarked on a fundraising trip to the United States to raise the money. In 1928 members of Bnei Binyamin and Hanotea, an organisation set up after Straus was informed of the establishment of the settlement, purchased 140 hectares (350 acres) of Umm Khaled lands. On December 14, 1928, a team led by Moshe Shaked began digging for water at the site. After water was discovered in February 1929, the first five settlers moved onto the land. In the weeks that followed, more settlers began arriving. Development was set back due to the 1929 Palestine riots and massacre of Jews. By September, however, development was back on track with the cornerstones for the first 10 houses being laid on Sukkot. The first kindergarten opened in 1930 and the first school in 1931. In the 1931 census of Palestine, Netanya was recorded as having 253 residents. In 1933, the British architect Clifford Holliday drew up a plan for Netanya as a tourist resort. Holliday also designed urban projects in Jaffa, Tiberias, Lydda and Ramla. The first urban plan divided the city into three sections with a tourism district along the coastline, housing, farms and commerce in the center, and agriculture and industry to the east. That year also saw the completion of the Tel Aviv Hotel, the first hotel in Netanya, as well as the establishment of two new neighborhoods, Ben Zion and Geva. In 1934, the first Aliyah Bet ship arrived at the shores of Netanya, carrying 350 immigrants. By 1939, over seventeen more ships had followed. An industrial zone was established, and the first synagogue and school was built. In 1937 the cornerstone was laid for a new commercial center and the connection of Netanya to the Tel Aviv-Haifa road. In 1939, the Ophir diamond polishing plant, the first diamond polishing plant in Palestine, was opened by Asher Daskall and Zvi Rosenberg. In 1940, the British Mandate government defined Netanya as a local council of which Oved Ben-Ami was elected head. In 1944, Netanya had a population of 4,900. The first high school in Netanya opened in 1945. During the Jewish insurgency in Palestine, the Jewish underground group Irgun launched several attacks against British military and police forces in the Netanya area. The town itself was a bastion of support for the Irgun. The most infamous incident happened in July 1947, in what became known as the Sergeants affair. After three Irgun fighters had been sentenced to death by the British, the Irgun abducted two British sergeants on a Netanya street, and hid them in an abandoned factory. The British responded by declaring martial law and placing Netanya and the surrounding area under curfew. The British Army searched the town and interrogated residents, but did not find the sergeants. After the three Irgun fighters were hanged, the Irgun hanged the two sergeants in the factory and re-hanged and booby-trapped their bodies in an orange grove. In November 1947, an Egged bus driving from Netanya to Jerusalem was attacked in Petah Tikva. In 1948, following the withdrawal of British forces from Netanya and the 1948 Arab-Israeli War, a large military base was established in the city. On December 3, 1948, Netanya was declared a city in the newly established State of Israel. Ramat Tiomkin, Ein Hatchlelet, Pardes Hagdud, and Ramat Ephraim were annexed to Netanya. At this time, Netanya had a population of 11,600. The Kiryat Eliezer Kaplan Industrial Zone was inaugurated in 1949 and Neve Itamar, founded in 1944, was annexed to Netanya. The Netanya railway station opened in 1953. With Israel experiencing a wave of Jewish immigration from Europe, elsewhere in the Middle East, and North Africa, Netanya's population expanded. In the years following independence, approximately 14,000 Libyan Jewish immigrants settled in Netanya. The population reached 31,000 in 1955. To accommodate the influx of newcomers, the Israeli Housing Ministry built housing units of 50 square meters. The cornerstone of Kiryat Sanz, a religious neighborhood was laid in 1956. The first stock exchange built in Israel was built in Netanya. By 1961, the city's population had grown to 41,300. During the Six-Day War in 1967, Netanya was hit by Jordanian artillery, and Jordanian planes made sorties near Netanya, but failed to cause major damage. A lone Iraqi bomber attacked Netanya, dropping several bombs which damaged a factory and caused some casualties, shortly before being shot down. In 1972, Netanya had a population of 71,100. In the 1990s, large numbers of immigrants from the former Soviet Union settled in Netanya, greatly expanding the city's population and resulting in large-scale housing construction. Netanya suffered from several Palestinian bombings during the Second Intifada, including the Netanya Market bombing and, in the same month, the Passover massacre which caused the death of 29 people. Such attacks were cited as justification for the construction of the Israeli West Bank barrier which has proved effective in stemming suicide attacks. In the 2000s and 2010s, Netanya became one of the primary destinations of French Jewish aliyah. Thousands of French immigrants settled in Netanya, influencing the local culture. Geography Netanya is located on the Israeli Mediterranean Coastal Plain, the historic land bridge between Europe, Africa, and Asia. The city is the capital of the Sharon plain, a geographic region stretching from the Mediterranean in the west to the Samarian hills in the east, and the modern-day Gush Dan metropolitan area in the south northwards to Mount Carmel. Although the capital of a densely populated region, Netanya itself is relatively separate from settlements to the north, south, and east, although, over time, growth has incorporated some into what makes up modern-day Netanya. Apart from some small moshavim and kibbutzim, south of Netanya is relatively clear of settlement until Herzliya and the start of the Gush Dan metropolitan area. Likewise, to the north is clear of large settlement until Hadera, and to the east until Tulkarm in the West Bank. The area to the east of Netanya does, however, have a large concentration of kibbutzim and moshavim in the Hefer Valley Regional Council and local councils of Kfar Yona, Kadima-Tzoran and Even Yehuda. Netanya itself is divided into a large number of neighborhoods (see Neighborhoods of Netanya), recently growing southwards out of the city to create several high-end coastal neighborhoods with industrial areas inland. Netanya is home to the Poleg nature reserve and the Irises Dora Rainpool nature park containing the world's largest population of iris atropurpurea. At the center of the park is a rainpool which fills up with water in the winter months, and dries up over the summer months. Signs along the rain pool include information on the types of flora and fauna that populate the ecosystem. Demographics In 2023, Netanya was home to 233,485 people. The population density of the city is 7,115 per square kilometer. The population is expected to be around 320,000 in 2035. According to a 2001 survey by the CBS, 99.9% of the population are Jewish and other non-Arabs. In 2001 alone, the city became home to 1,546 immigrants. According to CBS, in 2001 there were 78,800 males and 84,900 females with the population of the city being spread out, with 31.1% 19 years of age or younger, 15.3% between 20 and 29, 17.2% between 30 and 44, 17.4% from 45 to 59, 4.2% from 60 to 64, and 14.9% 65 years of age or older. In terms of the origin of Netanya's residents, 63,800 originate from Europe and America, 30,200 from North Africa, 18,100 from Asia, 10,500 from Ethiopia and 38,100 from Israel in 2008. That same year, 90,200 of the residents of Netanya were born in Israel, while 71,300 were born abroad. A significant number of Ethiopian Jews in Israel have settled in Netanya with over 10,500 Ethiopian Jewish residents in the city. Netanya is also the center of the Persian Jewish community of Israel. As of 2000, the city had 58,897 salaried workers and 4,671 self-employed with the mean monthly wage in 2000 for a salaried worker in the city being NIS 4,905, a real change of 8.6% over the course of 2000. Salaried males have a mean monthly wage of NIS 6,217 (a real change of 9.0%) versus NIS 3,603 for females (a real change of 6.8%). The mean income for the self-employed is 6,379. There are 3,293 people who receive unemployment benefits and 14,963 people who receive an income guarantee. In terms of religion, Netanya is made up approximately of 50% secular Jews. It is also the home of the Sanzer dynasty and has a large Chabad Lubavitch presence. Neighborhoods Kiryat Eliezer (Hebrew: קריית אליעזר) is an industrial neighborhood named after Eliezer Kaplan in eastern Netanya. It is also known as Kiryat Eliezer Kaplan Industrial Zone and the Old Industrial Zone. It was established in 1950 when units built for packing produce were set up to support the surrounding orchards. Later, large factories and workshops were established to provide jobs for the city's residents and new immigrants. The Ort Leibowitz Vocational School was established in Kiryat Eliezer. In the 1960s, students from African countries studied there, as part of Israel's cooperation with developing countries. In 1956, a beachfront in northern Netanya was selected as a home base for the Sanzer Hasidim by its leader, Rabbi Yekusiel Yehudah Halberstam. Halberstam established kindergartens, boys' and girls' schools, yeshivas, seminaries, synagogues, a children's home for orphaned and needy girls, an old-age home, and a hospital. In addition to religious services, Kiryat Sanz had a diamond polishing factory built by a New York diamond merchant. Halberstam established his court here in 1960. Following his death in 1994, his eldest son, Rabbi Zvi Elimelech Halberstam, known as the Sanzer Rebbe, became the spiritual leader of the Sanz community in Israel. In 2010, Kiryat Sanz had a population of approximately 1000 families. Most of the older generation are Holocaust survivors. Besides its educational facilities for boys and girls from elementary to post-graduate, there are five synagogues, a mikveh, a printing house, a religious hotel, a religious nursing school, and the Laniado Hospital, which encompasses two medical centers, a children's hospital, a geriatric center and a nursing school, serving a regional population of over 450,000. Located in the center of Netanya, near the Netanya interchange. It is a unification of four neighborhoods: Shikkun Sela, Gan Beracha, Amidar and Ramat Herzl. The neighborhood, like the main street of the city that runs nearby, was named after Theodor Herzl. The old settlement of Umm Khalid is also located in this neighborhood. Lies west of the Ramat Hen neighborhood. The neighborhood was established during the Second World War and is named after the port city of Tobruk in Libya. It used to be a center of Diamond cutting. In 1947, two British Army Sergeants were hanged in the inactive "Feldman" diamond polishing plant in this neighborhood. A comparably new neighborhood, established in 2000, along the cliff promenade, south of the "Carmel" hotel. A paragliding site is located near the neighborhood. A neighborhood of about 2,500 residents located in the north of Netanya, on the shores of the Mediterranean Sea near Avihayil. Ein Hatkhelet was established as a working-class neighborhood in Emek Hefer in 1936. In 1948 it became part of the city of Netanya. Named after Ephraim Aaronsohn [HE]. Part of it is the Moshav Ramat Tiomkin which was established in 1932 and over time was incorporated into Netanya. The moshav was founded by the people of Betar, and a Kvutza named Menorah [he]. It was named after Ze'ev Vladimir Tiomkin [he]. One of the southern neighborhoods of the city, near Gesher HaAchdut. Previously called Pagi neighborhood, since it was founded by Poalei Agudat Yisrael (Pagi is the Hebrew acronym of it). Previously called "Shikkun Vatikim", this neighborhood is one of the first neighborhoods in the city and it was established in the location of the city's immigrant camp used to be. At its southern end is the cemetery of the city of Netanya. The neighborhood was established in 1944 as an independent settlement and was annexed to Netanya in 1949. It is named after Itamar Ben-Avi, who has been an important figure in the story of the establishment of Netanya. Ramat Poleg is an old neighborhood in Netanya, Israel, built in the late 1970s. It is the most southern neighborhood in Netanya. Ramat Poleg is an economically stable neighborhood with a rich culture and many sports activities. Established in 2006. This neighborhood is located along the shoreline at the southern part of Netanya. The neighborhood borders Ramat Poleg (to its south) and the Irus nature reserve (to its north). Established in 2013, and still in construction. It is located next to the Vernal pool of Netanya. The neighborhood is divided into three sections, A B & C. Section C is currently in construction (as of October 2023). Economy Industry in Netanya is largely divided between two industrial parks.[citation needed] In the south of the city, the newest of these, Pinchas Sapir (KA Poleg), houses the first branch of IKEA in Israel as well as technology companies such as Ceedo.[citation needed] Tourism also plays a major part in Netanya's economy with some 19 hotels in the city having 1,452 rooms.[citation needed] Transportation The public transportation in Netanya is based on buses, railways and service taxis. The Netanya railway station is located near the city center, on the east side of Highway 2. Netanya Sapir railway station is located in the Poleg Industrial Area. Beit Yehoshua railway station, located in the moshav of Beit Yehoshua, immediately south of Netanya, is convenient for getting to southern Netanya and to the Poleg Industrial Area. These stations are connected to the city by Egged bus service, although Shay Li service taxis are highly predominant at the Beit Yehoshua station. There are direct trains from Netanya and Beit Yehoshua to Tel Aviv, Binyamina, Hadera, Herzliya, Lod, Rehovot, Ashdod, Ashkelon and other towns. All Israel Railways stations, including Ben Gurion Airport, can be accessed from Netanya by means of transfer stations such as Binyamina and Tel Aviv. Egged buses run from the Netanya central bus station to Jerusalem, Haifa, Eilat and other destinations. Many neighborhoods have a direct connection to Tel Aviv without the need to pass through the central bus station. In addition, many Egged lines connecting Tel Aviv with the north of the country stop at the Netanya Interchange on Highway 2, giving Netanya a direct connection with Nazareth, Tiberias, Kiryat Shmona and many other northern destinations. Metropoline operates bus services to Tel Aviv, Bnei Brak and the surrounding communities, including the city of Hadera. Some regional lines are still operated by Egged. The intracity transportation is based on Egged Ta'avura bus lines and Shay Li service taxis. Culture The Well House is a museum documenting the early history of Netanya. It is located in a historic building dating from 1928. Other museums are the Tribes of Israel Pearl Museum of Yemenite Jewish Heritage, the Shlomo Dror Art Institute, and the Diamimon Diamond Museum. The Cliff Gallery, Gosher Gallery, Abecassis Gallery and Fourth Gallery are all located in the city. War memorials include the Holocaust Train Car, Beit Yad Lebanim, a memorial to fallen IDF soldiers from Netanya, the National Memorial for Fallen Ordnance Corps, the Alexandroni Brigade Memorial, the National Victory Monument, dedicated to the Soviet Red Army victory over Nazi Germany, and the Memorial to Victims of Acts of Terror. In June 2016, a street in Netanya was named for Japanese diplomat Chiune Sugihara, who was responsible for saving Lithuanian Jews from Nazi persecution early in World War II by providing visas allowing travel eastwards, beyond the reach of the Third Reich's genocidal grasp. Education According to the Netanya Municipality, the city has 36,544 students including 5,351 pupils in 186 kindergartens, 16,748 in 46 elementary schools, and 14,445 in 16 high schools. Education in the city is controlled by the municipality's Education Administration. 52.7% of 12th grade students were entitled to a matriculation certificate (Bagrut) in 2001. Netanya Academic College offers Bachelor's and master's degrees, and a unique program for high-school students. Other institutions of higher education in the city are Ort Hermelin College of Engineering, Zinman College of Physical Education and Sport Sciences, Lesley College, and Tesler School for Nursing. The Wingate Institute, Israel's National Centre for Physical Education and Sport, is located just south of the city. Sports The main stadiums in Netanya are the 13,610-seat Netanya Stadium. Netanya has three football teams, the main being Maccabi Netanya, whose main local rival is Beitar Nes Tubruk. The third is Maccabi HaSharon Netanya, though the team has been limited to fourth-tier football in the Liga Bet. Elitzur Netanya represents the city in the first tier of Israeli basketball. In handball, the city is represented by Hapoel Netanya in the 2nd tier of the Israeli handball. In baseball, the city was represented by the Netanya Tigers of the Israel Baseball League. As part of the "Netanya – city of sport" program the beach soccer stadium was established and it currently hosts Israeli championship and international "Diamond tournament" games. Aside from the professional sports teams, Maccabi Netanya also has a boxing and fencing club while Hapoel Netanya has judo and gymnastic clubs, and Elitzur Netanya has a lacrosse club. The founder of Krav Maga, Imi Lichtenfeld opened a sports academy in Netanya for the continuation of his way and his martial art. Netanya is also the home of paragliding in Israel. The moderate cliffs plus a stiff offshore breeze provide an ideal environment for safe and fun comfortable paragliding. Gliders are often seen cruising high above the beach, just along the cliff line. Netanya was scheduled to host the 2015 European Short Course Swimming Championships in December. The venue of the event was to be the brand-new swimming complex of the Wingate Institute. The new complex at the Wingate Institute features an Olympic-size pool with 10 lanes and 3m depth, backed by the latest built-in filtration systems, an 8-lane 50m pool and a 6-lane 25m pool. Netanya hosted the World Lacrosse Championship tournament on July 12–21, 2018, thus making Israel the first country to host such where English is not the primary spoken language. Forty-six nations from around the world sent teams. The city hosted the 2021 FINA Junior Water Polo World Championships. Urban development Several of the tallest buildings in Israel are located in Netanya. The construction of eight new skyscrapers, six of them over 30 stories, was approved in 2011. Dozens of 40–42-story skyscrapers have been planned, many of them along the shore. Netanya is developing according to master plans for 2035 which seek to massively increase residential units and office space in the city, as well as a new marina and piers. As part of the plan, the intention of the municipality is for the city's population to reach 320,000 by 2035. The city seeks to become a major tourist hub for local and overseas tourism, with an "Israeli Riviera" on the shore. Among the projects planned in 2013 was the construction of 2,062 housing units and 1,100 hotel rooms while leaving much of the land as open space. The city has set itself a goal to expand open space from 56 to 70 percent. The plan is expected to attract more residents, boost hotel development, and increase the number of gardens and green spaces. It has been suggested that as the city's population expands, a light rail system may be built there in the future. Twin towns – sister cities Netanya is twinned with: Notable people Gallery See also References External links
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[SOURCE: https://en.wikipedia.org/wiki/No-hair_theorem] \| [TOKENS: 1306]
Contents No-hair theorem The no-hair theorem, also known as the black hole uniqueness theorem, states that all stationary black hole solutions of the Einstein–Maxwell equations of gravitation and electromagnetism in general relativity can be completely characterized by only three independent externally observable classical parameters: mass, angular momentum, and electric charge.[citation needed] Other characteristics (such as geometry and magnetic moment) are uniquely determined by these three parameters, and all other information (for which "hair" is a metaphor) about the matter that formed a black hole or is falling into it "disappears" behind the black-hole event horizon and is therefore permanently inaccessible to external observers after the black hole "settles down" (by emitting gravitational and electromagnetic waves). Physicist John Archibald Wheeler expressed this idea with the phrase "black holes have no hair", which was the origin of the name. In a later interview, Wheeler said that Jacob Bekenstein coined this phrase. Richard Feynman objected to the phrase that seemed to me to best symbolize the finding of one of the graduate students: graduate student Jacob Bekenstein had shown that a black hole reveals nothing outside it of what went in, in the way of spinning electric particles. It might show electric charge, yes; mass, yes; but no other features – or as he put it, "A black hole has no hair". Richard Feynman thought that was an obscene phrase and he didn't want to use it. But that is a phrase now often used to state this feature of black holes, that they don't indicate any other properties other than a charge and angular momentum and mass. The first version of the no-hair theorem for the simplified case of the uniqueness of the Schwarzschild metric was shown by Werner Israel in 1967. The result was quickly generalized to the cases of charged or spinning black holes. There is still no rigorous mathematical proof of a general no-hair theorem, and mathematicians refer to it as the no-hair conjecture. Even in the case of gravity alone (i.e., zero electric fields), the conjecture has only been partially resolved by results of Stephen Hawking, Brandon Carter, and David C. Robinson, under the additional hypothesis of non-degenerate event horizons and the technical, restrictive and difficult-to-justify assumption of real analyticity of the space-time continuum. Example Suppose two black holes have the same masses, electrical charges, and angular momenta, but the first black hole was made by collapsing ordinary matter whereas the second was made out of antimatter; nevertheless, then the conjecture states they will be completely indistinguishable to an observer outside the event horizon. None of the special particle physics pseudo-charges (i.e., the global charges baryonic number, leptonic number, etc., all of which would be different for the originating masses of matter that created the black holes) are conserved in the black hole, or if they are conserved somehow then their values would be unobservable from the outside.[citation needed] Changing the reference frame Every isolated unstable black hole decays rapidly to a stable black hole; and (excepting quantum fluctuations) stable black holes can be completely described at any moment in time by these eleven numbers (at spatial infinity): These numbers represent the conserved attributes of an object which can be determined from a distance by examining its gravitational and electromagnetic fields. All other variations in the black hole will either escape to infinity or be swallowed up by the black hole. By changing the reference frame one can set the linear momentum and position to zero and orient the spin angular momentum along the positive z axis. This eliminates eight of the eleven numbers, leaving three which are independent of the reference frame: mass, angular momentum magnitude, and electric charge. Thus any black hole that has been isolated for a significant period of time can be described by the Kerr–Newman metric in an appropriately chosen reference frame. Extensions The no-hair theorem was originally formulated for black holes within the context of a four-dimensional spacetime, obeying the Einstein field equation of general relativity with zero cosmological constant, in the presence of electromagnetic fields, or optionally other fields such as scalar fields and massive vector fields (Proca fields, etc.).[citation needed] It has since been extended to include the case where the cosmological constant is positive (which recent observations are tending to support). Magnetic charge, if detected as predicted by some theories, would form the fourth parameter possessed by a classical black hole.[citation needed] Counterexamples Counterexamples in which the theorem fails are known in spacetime dimensions higher than four; in the presence of non-abelian Yang–Mills fields, non-abelian Proca fields, some non-minimally coupled scalar fields, or skyrmions; or in some theories of gravity other than Einstein's general relativity. However, these exceptions are often unstable solutions and/or do not lead to conserved quantum numbers so that "The 'spirit' of the no-hair conjecture, however, seems to be maintained". It has been proposed that "hairy" black holes may be considered to be bound states of hairless black holes and solitons.[by whom?] In 2004, the exact analytical solution of a (3+1)-dimensional spherically symmetric black hole with minimally coupled self-interacting scalar field was derived. This showed that, apart from mass, electrical charge and angular momentum, black holes can carry a finite scalar charge which might be a result of interaction with cosmological scalar fields such as the inflaton. The solution is stable and does not possess any unphysical properties; however, the existence of a scalar field with the desired properties is only speculative. Observational results The results from the first observation of gravitational waves in 2015 provide some experimental evidence consistent with the uniqueness of the no-hair theorem. This observation is consistent with Stephen Hawking's theoretical work on black holes in the 1970s. Soft hair A study by Sasha Haco, Stephen Hawking, Malcolm Perry and Andrew Strominger postulates that black holes might contain "soft hair", giving the black hole more degrees of freedom than previously thought. This hair permeates at a very low-energy state, which is why it did not come up in previous calculations that postulated the no-hair theorem. This was the subject of Hawking's final paper which was published posthumously. See also References External links
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[SOURCE: https://en.wikipedia.org/wiki/Dokkaebi] \| [TOKENS: 1602]
Contents Dokkaebi Dokkaebi (Korean: 도깨비) are legendary creatures from Korean mythology and folklore. Dokkaebi, also known as "Korean ogres", are nature deities or spirits possessing extraordinary powers and abilities that are used to interact with humans, at times playing tricks on them and at times helping them. Legends describe different dokkaebi in many forms and beings with a thousand faces, and dokkaebi often wear hanbok. Origins The earliest known documentation of dokkaebi is in the Silla-era tale of "Lady Dohwa and Bachelor Bihyeong" from the Memorabilia of the Three Kingdoms compiled during the Goryeo period. Dokkaebi are featured in many folk tale anthologies compiled during the Joseon period. Characteristics Dokkaebi are different from deities, divinities, spirits or ghosts, called gwishin (귀신) in Korean, in that they are not formed by the death of a human being, but rather by the spiritual possession of an inanimate object such as old discarded household tools like brooms, or objects stained with human blood. The physical appearance of the dokkaebi is presented in many different ways and has varied by different time periods, but they have always been depicted as fearsome and awe-inspiring. The most common depiction of them is based on ancient roof tiles with dokkaebi patterns. Different versions of the dokkaebi mythology assign different attributes to them. In some cases, they are considered harmless but nevertheless mischievous, usually playing pranks on people or challenging wayward travelers to a ssireum (Korean wrestling) match for the right to pass. Dokkaebi are extremely skilled at wrestling and cannot be beaten unless their right side is exploited. In other tales, dokkaebi only have one leg, so one should hook their leg and push them to win.[citation needed] Dokkaebi fire is a glimmering light or tall blue flames that herald the appearance of dokkaebi. Dokkaebi possess magical items, such as the dokkaebi hat called the dokkaebi gamtu (도깨비 감투), which grants the wearer the ability of invisibility, and the dokkaebi magic club called the dokkaebi bangmangi (도깨비 방망이), which can summon things and act functionally as a magic wand. Dokkaebi like buckwheat jelly, sorghum and red bean rice cakes, mashed sorghum, and the drinks. So in dokkaebi gosa (도깨비 고사), there are foods which dokkaebi like.[citation needed] Abilities It is believed that dokkaebi have immense supernatural powers, can bring good harvests, big catches and great fortunes to humans, and are defenders against evil spirits. Depending on the region's traditional folklore, some traditional practices are held to appeal to dokkaebi to bring good luck to humans and other practices are done to chase away dokkaebi, who are thought to be the causes of bad luck that brings fires and contagious diseases. In Jeju Island, the Durin-gut healing ceremony for mental illnesses is said to drive away the dokkaebi from the patient, similar to driving away the bad energy from a person. Legends Many Korean legends have dokkaebi featured in them. In several, dokkaebi play pranks on mortals or punish them because of their evil deeds. One such tale describes an old man who lived alone on a mountain. One day, a dokkaebi visited his house. Surprised, the kind old man gave the dokkaebi an alcoholic beverage and they become friends. The dokkaebi visited the old man often and they had long conversations together, but one day, the man took a walk by himself in the woods near the river. He discovered that his reflection looked like the dokkaebi. The old man was afraid as he realized that he was gradually becoming that creature. The man made a plan to prevent himself from becoming a dokkaebi and invited the creature to his house. He asked, "What are you most afraid of?" and the dokkaebi answered, "I'm afraid of blood. What are you afraid of?" The man pretended to be frightened and said, "I'm afraid of money. That's why I live in the mountains by myself." The next day, the old man killed a cow and poured its blood all over his house. The dokkaebi, with shock and great anger, ran away and said, "I'll be back with your greatest fear!" The next day, the dokkaebi brought bags of money and threw it to the old man. After that, dokkaebi never came back and the old man became the richest person in the town. Types Although dokkaebis have no set form, some people divide them into types. These are some common types: Media Based on the folktale of dokkaebi, the South Korean cable network tvN showcased a television series called Guardian: The Lonely and Great God (쓸쓸하고 찬란하神 – 도깨비) starring Gong Yoo as title role and written by Kim Eun-sook, a notable writer in the industry. It earned 3rd place in the nationwide television ratings. In 2017, K-pop girlgroup CLC released a song called Hobgoblin (도깨비), which lyrics seem to be casting a spell through seducing so it holds the attention of the listener. The formerly cute group brought a darker and sexier concept, as well a fresh EDM Trap sonority. The song succeeded at bringing attention and performed greatly overseas. In 2018, a novel called Omniscient Reader's Viewpoint by Sing Shong came out, in which the dokkaebi play a big role as antagonists. There is also a reference to a dokkaebi in a video game called Tom Clancy's Rainbow Six Siege. Grace "Dokkaebi" Nam is an operator. Her nickname is a reference to her ability to tamper with the opposing team's phones, by causing them to vibrate, revealing their location. She can also infiltrate CCTV cameras and observe the enemy. Sujin, a non-binary dokkaebi, is a character in the novel Dragon Pearl by Yoon Ha Lee.[citation needed] In September 2020, K-pop boy group A.C.E released a song called Goblin: Favorite Boys (도깨비). In Korean fairy tales, traditional goblins like to wrestle with humans. Using that, their choreographer found a way for them to use traditional Korean wrestling in their choreography as well as in their clothing styling and set imagery. An upcoming video game that prominently features dokkaebi, titled DokeV, and developed by South Korean video game developer Pearl Abyss, is currently in development as of August 2021. In August 2021, the K-pop boy group Stray Kids made a dokkaebi-themed video for their comeback song "Thunderous". In March 2023, the K-pop boy group Xikers debuted with their song "Tricky House" (도깨비집) and first introduced their dokkaebi related lore with a dokkaebi-themed MV. The dokkaebi appear in the Mickey Mouse Funhouse episode "HALT, Tiger". They reside in the Shadow Mountain part of the Land of Myth and Legend. Dokkaebi are featured prominently in the 2025 animated film KPop Demon Hunters. See also References External links
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[SOURCE: https://en.wikipedia.org/wiki/Petah_Tikva] \| [TOKENS: 4180]
Contents Petah Tikva 32°05′20″N 34°53′11″E / 32.08889°N 34.88639°E / 32.08889; 34.88639 Petah Tikva (Hebrew: פתח תקווה, pronounced [ˈpetaχ ˈtikva] ⓘ), also spelt Petah Tiqwa and known informally as Em HaMoshavot (lit. 'Mother of the Moshavot, or colonies'), is a city in the Central District of Israel, 10.6 km (6.6 mi) east of Tel Aviv. It was founded in 1878, mainly by Haredi Jews of the Old Yishuv, and became a permanent settlement in 1883 with the financial help of Edmond Rothschild. In 2023, the city had a population of 267,196, thus being the fourth-largest city in Israel. Its population density is approximately 6,277 inhabitants per square kilometre (16,260/sq mi). Its jurisdiction covers 35,868 dunams (~35.9 km2 or 15 sq mi). Petah Tikva is part of the Gush Dan metropolitan area. Etymology Petah Tikva takes its name (lit. 'Door of hope') from the biblical allusion in Hosea 2:17: "... and make the valley of Achor a door of hope." The Achor Valley, near Jericho, was the original proposed location for the town. History Tel Mulabbis, an archaeological mound in modern Petah Tikva, is an important archaeological site from the Yarkon River basin, with habitation remains from the Roman, Byzantine, Early Islamic, Crusader, Mamluk and Late Ottoman periods. The place was inhabited sporadically, and was the site of an Egyptian Arab village of the same name, inhabited by the Abu Hamed al-Masri clan. Petah Tikva was founded in 1878 by immigrants from Europe, among them Yehoshua Stampfer, Moshe Shmuel Raab, Yoel Moshe Salomon, Zerach Barnett, and David Meir Gutmann, as well as Lithuanian Rabbi Aryeh Leib Frumkin who built the first house. It was the first modern Jewish agricultural settlement in Ottoman Southern Syria (hence its nickname as 'Mother of the Moshavot'). Originally intending to establish a new settlement in the Achor Valley, near Jericho, the settlers purchased land in that area. However, Ottoman Sultan Abdul Hamid II cancelled the purchase and forbade them from settling there, but they retained the name Petah Tikva as a symbol of their aspirations. In 1878, the founders of Petah Tikva learned of the availability of land northeast of Jaffa near the village of Mulabes (or Umlabes). The land was owned by two Christian businessmen from Jaffa, Antoine Bishara Tayan and Selim Qassar, and was worked by some thirty tenant farmers. Tayan's property was the larger, some 8,500 dunams, but much of it was in the malarial swamp of the Yarkon Valley. Qassar's property, approximately 3,500 dunams, lay a few kilometers to the south of the Yarkon, away from the swampland. It was Qassar's that was purchased on July 30, 1878. Tayan's holdings were purchased when a second group of settlers, known as the Yarkonim, arrived in Petah Tikva the following year. Abdul Hamid II allowed the purchase because of the poor quality of the land. In a microhistorical anecdote of Petah Tikva, Yehuda Raab, one of the Hungarian settlers, recalls in his memoirs meeting a Baghdadi Jew, Daud abu Yusuf, who despite appearing as a Bedouin, announced "ana Israʾili," (lit. 'I am Jewish'), and recited the shema by way of proof. Yusuf, along with a Moroccan Jew from Jaffa, Yaʿqub bin Maymun Zirmati, was hired as a guard for colony; it was customary for European Jewish colonies to hire local Arab guards or in some cases Yemenite Jews. Both were Ottoman imperial subjects and were important cultural and linguistic go-betweens, for example in the horse and camel trade, from the world of the Ashkenazi Jewish immigrants and that of the Eastern or Maghrebi Jews, today called Mizrahi Jews. A malaria epidemic broke out in 1880, forcing the abandonment of the settlements on both holdings by 1881 or 1882. Those who remained in the area moved south to Yehud. After Petah Tikva was reoccupied by Chovovei Tzion immigrants in 1883, some of the original families returned. With funding for swamp drainage provided by Baron Edmond de Rothschild, the colony became more stable. In March 1886, Arab peasants from Yahudiya attacked the Jewish colony, injuring 5, with one dying later, possibly due to aggravation of her preexisting condition. This was called the first violent clash in the Yishuv by Moshe Smilansky. Upon learning that the Austrian post office in Jaffa wanted to open a branch in Petah Tikva, Yitzchak Goldenhirsch, an early resident, offered his assistance on condition that the Austrian consulate issued a Hebrew stamp and a special postmark for Petah Tikva. The stamp was designed by an unknown artist featuring a plow, green fields and a blossoming orange tree. The price was 14 paras (a Turkish coin) and displayed the name 'Petah Tikva' in Hebrew letters. David Ben Gurion lived in Petah Tikva for a few months on his arrival in Mutasarrifate of Jerusalem in 1906. It had a population of around 1000, half of them farmers. He found occasional work in the orange groves. But, he soon caught malaria and his doctor recommended he return to Europe. The following year, after moving to Jaffa, he set up a Jewish workers organisation in Petah Tikva. During the Sinai and Palestine campaign of World War I, Petah Tikva served as a refugee town for residents of Tel Aviv and Jaffa, following their exile by the Ottoman authorities. The town suffered heavily as it lay between the Ottoman and British fronts during the war.[citation needed] In the early 1920s, industry began to develop in the Petah Tikva region. In 1921, Petah Tikva was granted local council status by the British authorities. In May 1921, Petah Tikva was the target of an Arab attack, which left four of its Jewish inhabitants dead–an extension of the 1921 Jaffa riots. In 1927, Petah Tikva concluded a local peace treaty with the Arabs living nearby; subsequently, Petah Tikva was untouched by the 1929 Palestine riots. According to the 1922 census conducted by the British Mandate authorities, Petah Tikva had a total population of 3,032: 3,008 Jews, 22 Muslims and 2 Orthodox Christians. By the time the 1931 census was taken, the population had increased to 6,880 inhabitants in 1,688 houses. In 1937, it was recognized as a city. Its first mayor, Shlomo Stampfer, was the son of one of its founders, Yehoshua Stampfer. Petah Tikva, a center of citrus farming, was considered by both the British government and the Jaffa Electric Company as a potentially important consumer of electricity for irrigation. The Auja Concession, which was granted to the Jaffa Electric Company on 1921, specifically referred to the relatively large Jewish settlement of Petah-Tikva. But, it was only in late 1929 that the company submitted an irrigation scheme for Petah-Tikva, and it was yet to be approved by the government in 1930. In 1931, Ben Gurion wrote that Petah Tikva had 5000 inhabitants and employed 3000 Arab labourers. In the 1930s, the pioneering founders of Kvutzat Yavne from the Religious Zionist movement immigrated to the British Mandate, settling near Petah Tikva on land purchased by a Jewish-owned German company. Refining the agricultural skills they learned in Germany, these pioneers began in 1941 to build their kibbutz in its intended location in the south of Israel, operating from Petah Tikva as a base. After the 1948 Arab–Israeli War, Petah Tikva annexed all of the lands of the newly depopulated Palestinian Arab village of Fajja. The city has suffered a series of terror attacks as a result of the ongoing regional conflict, including the bombing of a vegetable market in 1977, and three attacks during the Second Intifada: On May 27, 2002, a suicide bomber blew himself up at a small cafe outside a shopping mall, leaving two dead, including a baby; on December 25, 2003, a suicide bomber blew himself up at a bus stop near the Geha bridge, killing 4 civilians, and on February 5, 2006, a Palestinian got into a shuttle taxi, pulled out a knife, and began stabbing passengers killing two of them, but a worker from a nearby factory hit him with a log, subduing him. After the independence of Israel on 14 May 1948, several adjoining villages–Amishav and Ein Ganim to the east (named after the biblical village (Joshua 15:34)), Kiryat Matalon to the west, towards Bnei Brak, Kfar Ganim and Mahaneh Yehuda to the south and Kfar Avraham on the north–were merged into the municipal boundaries of Petah Tikva, boosting its population to 22,000. As of 2018, with a population of over 240,000 inhabitants, Petah Tikva is the third most populous city in the Gush Dan metropolitan area. Petah Tikva is divided into 33 neighborhoods for municipal purposes. On June 16, 2025, an Iranian missile hit a 20-story building, killing four people including Holocaust survivor Ivette Shmilovitz. Demographics Some 70,000 Orthodox Jews live in Petah Tikva. The community of Petah Tikva is served by 300 synagogues, including the 120-year-old Great Synagogue, eight mikvaot (ritual baths) and two major Haredi yeshivot, Lomzhe Yeshiva and Or-Yisrael (founded by the Chazon Ish, Rabbi Avraham Yeshayahu Karelitz). Additionally, Rav Michael Laitman, PhD in Philosophy and Kabbalah (see Bnei Baruch), daily leads 200-300 students and hundreds of thousands virtually (some estimates of up to 2 million) in the method of Kabbalah learned from his teacher Rav Baruch Ashlag, known as the Rabash (stylized in all caps). Six hospitals are located in the city. The Rabin Medical Center complex includes the Beilinson Medical Center, the Davidoff Oncologic Center, the Geha Psychiatric Hospital, the Schneider Pediatric Hospital and Tel Aviv University's Faculty of Medical Research. Other medical facilities in Petah Tikva are HaSharon Hospital, the Beit Rivka Geriatric Center, the Kupat Holim Medical Research Center and a private hospital, Ramat Marpeh, affiliated with Assuta Hospital. The Schneider Pediatric Center is one of the largest and most modern children's hospitals in the Middle East. In addition, there are many family health clinics in Petah Tikva as well as Kupat Holim clinics operated by Israel's health maintenance organizations. The city is also served by Mayanei Hayeshua Medical Center, a Haredi hospital in nearby Bnei Brak. Petah Tikva is home to 300 educational institutions from kindergarten through high school, catering to the secular, religious and Haredi populations. There are over 43,000 students enrolled in these schools, which are staffed by some 2,400 teachers. Petah Tikva has seventeen public libraries, the main one located in the city hall building. The Ahad HaAm High School (named after Asher Zvi Hirsch Ginsberg) is located in Petah Tikva. The high school won the National Education Award for 2010 from the Israeli Ministry of Education in recognition of its excellence in education and outstanding matriculation rate – 95.32%. The high school campus also houses the Open University's Petah Tikva College. Government Petah Tikva's history of government goes back to 1880, when the pioneers elected a council of seven members to run the new colony. From 1880 to 1921, members of the council were David Meir Guttman, Yehoshua Stampfer, Ze'ev Wolf Branda, Abraham Ze'ev Lipkis, Yitzhak Goldenhirsch, Chaim Cohen-Rice, Moshe Gissin, Shlomo Zalman Gissin and Akiva Librecht. This governing body was declared a local council in 1921, and Petah Tikva became a city in 1937. Kadima, the political party founded by former Israeli prime minister Ariel Sharon, had its headquarters in Petah Tikva. Economy Petah Tikva is the second-largest industrial sector in Israel after the northern city of Haifa. The industry is divided into three zones—Kiryat Aryeh (named after Arie Shenkar, founder and first president of the Manufacturers Association of Israel and a pioneer in the Israeli textile industry), Kiryat Matalon (named after Moshe Yitzhak Matalon), and Segula, and includes textiles, metalwork, carpentry, plastics, processed foods, tires and other rubber products, and soap. Numerous high-tech companies and start-ups have moved into the industrial zones of Petah Tikva, which now house the Israeli headquarters for the Oracle Corporation, IBM, Intel, Alcatel-Lucent, ECI Telecom, Gilat Satellite Networks, Gilat Telecom, Migdal, IDI and GSK plc company. The largest data center in Israel, operated by the TripleC company, is also located in Petah Tikva. Furthermore, the Teva Pharmaceuticals company, the world's largest generic drug manufacturer, is headquartered in Petah Tikva. One of Israel's leading food processing corporations, Osem opened in Petah Tikva in 1976 and has since been joined by the company's administrative offices, distribution center and sauce factory. Strauss Group is also based in Petach Tikva. Over time, the extensive citrus groves that once ringed Petah Tikva have disappeared as real-estate developers acquired the land for construction projects. Many new neighborhoods are going up in and around Petah Tikva. A quarry for building stone is located east of Petah Tikva. As well as general hi-tech firms, Petah Tikva has developed a position as a base for many communications firms. As such, the headquarters of the Bezeq company is located in the Kiryat Matalon industrial zone as are those of the 012 Smile Telecom. The headquarters of Tadiran Telecom are in the Ramat Siv industrial zone. Arutz Sheva, the right wing Religious Zionist Israeli media network, operates an internet radio studio in Petah Tikva, where Arutz Sheva internet TV is located as well as the printing press for its B'Sheva newspaper. The Israeli secret service, Shin Bet, has an interrogation facility in Petah Tikva. Culture Petah Tikva's Independence Park includes a zoo at its northeastern edge, the Museum of Man and Nature, a memorial to the victims of the 1921 Jaffa riots, an archaeological display, Yad Labanim soldiers' memorial, a local history museum, a Holocaust museum and the Petah Tikva Museum of Art. The main stadium in Petah Tikva is the 11,500-seat HaMoshava Stadium. Petah Tikva has two football teams – Hapoel Petah Tikva and Maccabi Petah Tikva. The local baseball team, the Petach Tikva Pioneers, played in the inaugural 2007 season of the Israel Baseball League. The league folded the following year. In 2014, Hapoel Petah Tikva's women's football team recruited five Israeli Arab women to play on the team. One of them is now a team captain. In November–December 2006 and May 2007, a salvage excavation was conducted at Tel Mulabbis, east of Moshe Sneh Street in Petah Tikva on behalf of the Israel Antiquities Authority. Four main strata (I–IV) were identified, dating to the Byzantine period (fourth–seventh centuries CE; Stratum IV), Early Islamic period (eighth–tenth centuries CE; Stratum III), Crusader period (twelfth–thirteenth centuries CE; Stratum II) and Ottoman period (Stratum I). Transportation Petah Tikva is served by a large number of buses. A large number of intercity Egged buses stop there, and the city has a network of local buses operated by the Kavim company. The Dan Bus Company operates lines to Ramat Gan, Bnei Brak and Tel Aviv. Petah Tikva's largest bus terminal is the Petah Tikva central bus station (Tahana Merkazit), while other major stations are located near Rabin Medical Center and Beit Rivka. Israel Railways maintains two suburban railroad stations in Segula and Kiryat Aryeh, in the northern part of the city. A central train station near the main bus station is envisioned as part of Israel Railways's long-term expansion plan. There are eight taxi fleets based in Petah Tikva, and the city is bordered by three of the major vehicle arteries in Israel: Geha Highway (Highway 4) on the west, the Trans-Samaria Highway (Highway 5) on the north, and the Trans-Israel Highway (Highway 6) on the east. Santiago Calatrava's bridge, a 50 metres (160 ft) long span Y-shaped cable-stayed pedestrian three-way bridge connecting Rabin Hospital to a shopping mall, a residential development and a public park. The structure is supported from a 29-metre (95 ft) high inclined steel pylon, which is situated where the three spans intersect. Light in construction, the bridge is built principally of steel with a glass-paved deck. The Red Line of the Greater Tel Aviv rapid transit/light rail system connects Petah Tikva to Bnei Brak, Ramat Gan, Tel Aviv and Bat Yam. The Red Line of the Tel Aviv Light Rail system is split into 2 branches upon entrance to Petah Tikva. One branch travels to an underground terminal at the Kiryat Aryeh railway station, while the other continues east to the Petach Tikva Central Bus Station. The Light Rail's train depot is also located at Kiryat Aryeh. It was opened to service on August 18, 2023. Notable people In popular culture Petah Tikva is referenced in the Tony Award–winning 2016 musical The Band's Visit as the main plot derives from a mix-up between the city and the fictional town of "Bet Hatikva" in the Negev desert of southern Israel. Petah Tikva is known for being a part of a satirical conspiracy theory which claims that it does not exist, much like the German Bielefeld conspiracy. "Free Petah Tikvah" became a meme during 2023. Twin towns – sister cities Petah Tikva is twinned with: See also References Bibliography External links
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[SOURCE: https://en.wikipedia.org/wiki/Jumping_Flash!] \| [TOKENS: 2562]
Contents Jumping Flash! Jumping Flash![b] is a 1995 platform video game developed by Exact and Ultra and published by Sony Computer Entertainment for the PlayStation. It was originally released on 28 April 1995 in Japan, 29 September 1995 in PAL territories as well as 2 November 1995 in North America.[citation needed] Played in a first-person perspective, the game follows Robbit, a robotic rabbit as he searches for missing jet pods scattered by the game's astrophysicist antagonist character Baron Aloha. Robbit must explore each section of Crater Planet to retrieve all of the jet pods, stop Aloha and save the world from being destroyed. The game was designed as a technology demonstration for the PlayStation console and was revealed in early 1994 under the provisional title of "Spring Man". Jumping Flash! utilises much of the game engine used in Geograph Seal, an earlier game by Exact for the X68000 home computer. Jumping Flash! has been described as an ancestor of, as well as an early showcase for, 3D graphics in console gaming. It was generally well received by critics, who praised its graphics and unique 3D platforming gameplay, but it was eventually overshadowed by later 3D platformers of the fifth console generation. Jumping Flash! spawned two sequels: Jumping Flash! 2 and Robbit Mon Dieu. It received positive reviews at the time of release, and made an appearance in Next Generation's "Top 100 Games of All Time" just one year after. The game was described as the third-most underrated video game of all time by Matt Casamassina of IGN in 2007. It holds the Guinness World Record as the "first platform video game in true 3D". Gameplay Jumping Flash! is presented in a first-person perspective. The player assumes the role of Robbit, a robotic rabbit, and can freely move Robbit in three-dimensional space and can rotate the camera in any direction. The top part of the screen shows the remaining time, the player's score, and a character named Kumagoro—Robbit's sidekick artificial intelligence who offers the player warnings and hints. The top left corner of the screen shows the collected power-ups; the top right corner contains the radar showing the locations of objects including enemies, power-ups, jet pods and enemy projectiles. The bottom shows a health meter on the sides and the number of remaining lives in the centre. The player starts the game with three lives; a new life is granted once one million points are earned. The core of the gameplay is focused on the player's ability to make Robbit jump. Robbit can jump up to three times in mid-air, which allows him to reach extreme heights. Unlike other platform games that continue to face horizontally when the player jumps, in Jumping Flash! the camera tilts downwards when a double-jump or triple-jump is performed to allow the player to see Robbit's shadow and easily plan a landing spot. The player has the ability to shoot a low-powered laser beam at a target indicator in the middle of the screen. The player can find and use fireworks for Robbit to damage enemies. These include cherry bombs, rockets, Roman candles and spinners. Each level has a time limit of ten minutes, which ends the game if it is exceeded. Losing all lives is presented with a choice to continue or return to the title screen. Power-ups scattered across each world, presented as picture frames, include carrots that extend Robbit's health, extra lives, time-outs that stop the clock and freeze the level's dynamics for a few seconds, hourglasses that extend the player's time, and power pills that make Robbit invincible for a short period of time. Enemies in the game vary from anthropomorphic versions of creatures to robots and plants. The game is composed of six worlds with three levels each, totalling to 18 main levels. The objective of the main levels in each world is to collect four jet pods. Each final level of a world consists of a boss fight. The level designs vary from snow-capped mountains to carnivals. While most of the levels are large, outdoor excursions, two are enclosed within a narrow interior. The game features hidden bonus levels, which are triggered when secret entrances are found. Bonus levels consist of blocks with balloons in them; popping the balloons yields either coins or power-ups. A time attack mode is available for any level the player has completed. Plot The game begins on Crater Planet and revolves around the story of an insane astrophysicist, Baron Aloha. Planning to make a large profit from his evil ingenuity, Aloha removes giant pieces of land from the planet using machines to turn them into private resorts. Aloha removes and hides the twelve jet pods that propel each world. Witnessing the destruction, the residents of Crater Planet call for help, and in response the Universal City Hall dispatches one of their agents, a mechanical rabbit named Robbit. Robbit is ordered to explore each world to retrieve the jet pods, stop Aloha, and save Crater Planet from destruction. At the end of the game, Aloha flees to his home, Little Muu, and vows revenge on Robbit. Throughout the game, Aloha surrounds himself with creatures called MuuMuus that appear as small, white, five-limbed creatures with miniature palm trees on their heads. Many of the game's full motion videos feature the MuuMuus in an izakaya tavern, recounting their defeat at the hands of Robbit. Development and release Jumping Flash! was developed by Japanese developers Exact and Ultra. Exact, short for Excellent Application Create Team, was previously known for developing games for the X68000; their previous game, Geograph Seal, serves as a spiritual predecessor to Jumping Flash!, utilising the same engine and some gameplay designs. After seeing Geograph Seal and realising the potential in their game design, Sony's director of entertainment in Japan, Koji Tada, paired Exact with Ultra to develop a new game for the upcoming PlayStation console. Tada replaced Hiroyuki Saegusa as director of the game, although he had kept all key Exact staff to work on the project. Sony Computer Entertainment hoped Jumping Flash! would be remembered as the first appearance of a new "platform star" with the same longevity as Sonic the Hedgehog or Mario. The game was first revealed in early 1994 under the provisional title "Spring Man" as a technology demonstration for the upcoming PlayStation console. The initial development was split into two phases. Exact developed the game engine and its gameplay; Ultra designed the story and 3D cutscenes, and created characters including the protagonist, a mechanical rabbit named Robbit. Ultra felt they needed to depart from the "stereotypical science fiction vibe" that included the usual "space ranger" or double agent protagonists. To create a sense of individuality among platform games, the developers implemented a dynamic camera that would automatically pan down towards the shadow of Robbit on the ground during large jumps, allowing players to carefully line up their landings. Jumping Flash! was considered the first game of the platform genre to be developed with full 3D computer graphics. The music for Jumping Flash! was composed by Japanese video games and anime music composer Takeo Miratsu. Many of the tracks, along with tracks from Jumping Flash! 2, were included on the Jumping Flash! 2 Original Soundtrack album, which Miratsu also composed. Reception The game received generally positive reviews upon release. Critics mainly praised its unique innovation, advanced graphics, gameplay and clean textures. The four reviewers of Electronic Gaming Monthly gave it their "Game of the Month" award, citing the outstanding graphics and particularly the innovative 3D gameplay. They described the style as "cutesy" but not off-putting. "Major Mike" of GamePro said that despite the game appearing "strange", it had action, strategy, and some humour. Next Generation said that "[many] of the boundaries have been redefined in a big way", contrasting it with side-scrolling platformers with a first-person perspective and explorable 3D environments. They called it "simply superb" and gave it a "Revolutionary" five-star rating. Computer and Video Games magazine called it "one of the most innovative and entertaining games seen" and "the first true 3D platformer." Official UK PlayStation Magazine wrote that "To suggest that Jumping Flash is innovative is a criminal understatement: there's never been anything like this game in terms of sheer brain-popping wow factor." Maximum stated that Jumping Flash! was one of the most "imaginative, playable, enjoyable" and original titles seen on the fifth generation of video game consoles. They criticised its length and lack of difficulty, expressing that it could have been one of the "greatest games ever" if it was longer and more difficult, and questioned whether it was "a really worthwhile" purchase. Game Revolution called the graphics "mind blowing" and the game itself "totally unique", but criticised the overall length and ease of play. IGN's 1996 review similarly disapproved the difficulty, stating that despite the small worlds and easy difficulty, it is "a great, genre-pushing game", also saying it is an essential for all PlayStation owners. In 1996, Next Generation listed it as number 86 on their "Top 100 Games of All Time", saying it had created the genre of 3D platforming. They particularly praised "the vertigo inducing sense of height as Robbit leaps from platform to platform". In a 2007 review, Greg Miller of IGN condemned the graphics as "dated", having "jagged edges" and "muddled" colours, and said every aspect of the game is "weak" and that it had not stood "the test of time". In a retrospective review, Andrew Yoon of Engadget praised the gameplay and innovation, saying the "grainy" and "antiquated" graphics did no harm to the vibrant atmosphere of the game. Speaking in 2007, Rob Fahey of Eurogamer stated that Jumping Flash! was arguably one of the most important ancestors of any 3D platform game, as well as asserting that the game would always have a part in videogaming history. Albert Kim of Entertainment Weekly stated that the game provided perhaps the most euphoric sensation of video gaming at the time and described the first-person perspective as "hypnotic". Maddy Thorson, the creator of the indie video game TowerFall, praised the game, saying "something about the sensation of leaping through 3D space captured my childhood imagination". 1UP.com cited its first-person platforming as a precursor to Mirror's Edge, despite suggesting that the jumping remained "woefully out of place" in the platform genre. In 2007, Matt Casamassina of IGN ranked Jumping Flash! as the third-most underrated video game of all time. After release, co-developer Ultra renamed themselves "Muu Muu", after the creatures featured in the game. Legacy Due to its popularity, Sony produced two sequels to Jumping Flash!, including one spin-off. A direct sequel, Jumping Flash! 2—also developed by Exact—was released worldwide for the PlayStation the following year; it continued the story of Robbit and the subsequent rise and fall of Baron Aloha. The game received positive reviews upon release, with critics particularly praising its updated features. Robbit Mon Dieu was released in Japan for the PlayStation in 1999. It was met with mixed reviews. Exact merged into Sony Computer Entertainment in 2000. A loose spin-off utilising the PocketStation titled Pocket MuuMuu was released in 1999, making it the most recent game in the series to be released. In 2025, former SIE Worldwide Studios head Shuhei Yoshida revealed that a new game in the franchise was in development for PlayStation VR, but was cancelled during its early stages. The original Jumping Flash! was re-released through the PlayStation Store in 2007 for PlayStation 3 and PlayStation Portable, in 2012 for PlayStation Vita, and in 2022 for PlayStation 4 and PlayStation 5. In recent years, Sony has referenced the series with Robbit appearing as a collectible in PlayStation Stars—a loyalty program on PlayStation Network—and as a cameo in Astro Bot. References External links
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[SOURCE: https://en.wikipedia.org/wiki/Animal#cite_note-Shankland-153] \| [TOKENS: 6011]
Contents Animal Animals are multicellular, eukaryotic organisms belonging to the biological kingdom Animalia (/ˌænɪˈmeɪliə/). With few exceptions, animals consume organic material, breathe oxygen, have myocytes and are able to move, can reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic development. Animals form a clade, meaning that they arose from a single common ancestor. Over 1.5 million living animal species have been described, of which around 1.05 million are insects, over 85,000 are molluscs, and around 65,000 are vertebrates. It has been estimated there are as many as 7.77 million animal species on Earth. Animal body lengths range from 8.5 μm (0.00033 in) to 33.6 m (110 ft). They have complex ecologies and interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology, and the study of animal behaviour is known as ethology. The animal kingdom is divided into five major clades, namely Porifera, Ctenophora, Placozoa, Cnidaria and Bilateria. Most living animal species belong to the clade Bilateria, a highly proliferative clade whose members have a bilaterally symmetric and significantly cephalised body plan, and the vast majority of bilaterians belong to two large clades: the protostomes, which includes organisms such as arthropods, molluscs, flatworms, annelids and nematodes; and the deuterostomes, which include echinoderms, hemichordates and chordates, the latter of which contains the vertebrates. The much smaller basal phylum Xenacoelomorpha have an uncertain position within Bilateria. Animals first appeared in the fossil record in the late Cryogenian period and diversified in the subsequent Ediacaran period in what is known as the Avalon explosion. Nearly all modern animal phyla first appeared in the fossil record as marine species during the Cambrian explosion, which began around 539 million years ago (Mya), and most classes during the Ordovician radiation 485.4 Mya. Common to all living animals, 6,331 groups of genes have been identified that may have arisen from a single common ancestor that lived about 650 Mya during the Cryogenian period. Historically, Aristotle divided animals into those with blood and those without. Carl Linnaeus created the first hierarchical biological classification for animals in 1758 with his Systema Naturae, which Jean-Baptiste Lamarck expanded into 14 phyla by 1809. In 1874, Ernst Haeckel divided the animal kingdom into the multicellular Metazoa (now synonymous with Animalia) and the Protozoa, single-celled organisms no longer considered animals. In modern times, the biological classification of animals relies on advanced techniques, such as molecular phylogenetics, which are effective at demonstrating the evolutionary relationships between taxa. Humans make use of many other animal species for food (including meat, eggs, and dairy products), for materials (such as leather, fur, and wool), as pets and as working animals for transportation, and services. Dogs, the first domesticated animal, have been used in hunting, in security and in warfare, as have horses, pigeons and birds of prey; while other terrestrial and aquatic animals are hunted for sports, trophies or profits. Non-human animals are also an important cultural element of human evolution, having appeared in cave arts and totems since the earliest times, and are frequently featured in mythology, religion, arts, literature, heraldry, politics, and sports. Etymology The word animal comes from the Latin noun animal of the same meaning, which is itself derived from Latin animalis 'having breath or soul'. The biological definition includes all members of the kingdom Animalia. In colloquial usage, the term animal is often used to refer only to nonhuman animals. The term metazoa is derived from Ancient Greek μετα meta 'after' (in biology, the prefix meta- stands for 'later') and ζῷᾰ zōia 'animals', plural of ζῷον zōion 'animal'. A metazoan is any member of the group Metazoa. Characteristics Animals have several characteristics that they share with other living things. Animals are eukaryotic, multicellular, and aerobic, as are plants and fungi. Unlike plants and algae, which produce their own food, animals cannot produce their own food, a feature they share with fungi. Animals ingest organic material and digest it internally. Animals have structural characteristics that set them apart from all other living things: Typically, there is an internal digestive chamber with either one opening (in Ctenophora, Cnidaria, and flatworms) or two openings (in most bilaterians). Animal development is controlled by Hox genes, which signal the times and places to develop structures such as body segments and limbs. During development, the animal extracellular matrix forms a relatively flexible framework upon which cells can move about and be reorganised into specialised tissues and organs, making the formation of complex structures possible, and allowing cells to be differentiated. The extracellular matrix may be calcified, forming structures such as shells, bones, and spicules. In contrast, the cells of other multicellular organisms (primarily algae, plants, and fungi) are held in place by cell walls, and so develop by progressive growth. Nearly all animals make use of some form of sexual reproduction. They produce haploid gametes by meiosis; the smaller, motile gametes are spermatozoa and the larger, non-motile gametes are ova. These fuse to form zygotes, which develop via mitosis into a hollow sphere, called a blastula. In sponges, blastula larvae swim to a new location, attach to the seabed, and develop into a new sponge. In most other groups, the blastula undergoes more complicated rearrangement. It first invaginates to form a gastrula with a digestive chamber and two separate germ layers, an external ectoderm and an internal endoderm. In most cases, a third germ layer, the mesoderm, also develops between them. These germ layers then differentiate to form tissues and organs. Repeated instances of mating with a close relative during sexual reproduction generally leads to inbreeding depression within a population due to the increased prevalence of harmful recessive traits. Animals have evolved numerous mechanisms for avoiding close inbreeding. Some animals are capable of asexual reproduction, which often results in a genetic clone of the parent. This may take place through fragmentation; budding, such as in Hydra and other cnidarians; or parthenogenesis, where fertile eggs are produced without mating, such as in aphids. Ecology Animals are categorised into ecological groups depending on their trophic levels and how they consume organic material. Such groupings include carnivores (further divided into subcategories such as piscivores, insectivores, ovivores, etc.), herbivores (subcategorised into folivores, graminivores, frugivores, granivores, nectarivores, algivores, etc.), omnivores, fungivores, scavengers/detritivores, and parasites. Interactions between animals of each biome form complex food webs within that ecosystem. In carnivorous or omnivorous species, predation is a consumer–resource interaction where the predator feeds on another organism, its prey, who often evolves anti-predator adaptations to avoid being fed upon. Selective pressures imposed on one another lead to an evolutionary arms race between predator and prey, resulting in various antagonistic/competitive coevolutions. Almost all multicellular predators are animals. Some consumers use multiple methods; for example, in parasitoid wasps, the larvae feed on the hosts' living tissues, killing them in the process, but the adults primarily consume nectar from flowers. Other animals may have very specific feeding behaviours, such as hawksbill sea turtles which mainly eat sponges. Most animals rely on biomass and bioenergy produced by plants and phytoplanktons (collectively called producers) through photosynthesis. Herbivores, as primary consumers, eat the plant material directly to digest and absorb the nutrients, while carnivores and other animals on higher trophic levels indirectly acquire the nutrients by eating the herbivores or other animals that have eaten the herbivores. Animals oxidise carbohydrates, lipids, proteins and other biomolecules in cellular respiration, which allows the animal to grow and to sustain basal metabolism and fuel other biological processes such as locomotion. Some benthic animals living close to hydrothermal vents and cold seeps on the dark sea floor consume organic matter produced through chemosynthesis (via oxidising inorganic compounds such as hydrogen sulfide) by archaea and bacteria. Animals originated in the ocean; all extant animal phyla, except for Micrognathozoa and Onychophora, feature at least some marine species. However, several lineages of arthropods begun to colonise land around the same time as land plants, probably between 510 and 471 million years ago, during the Late Cambrian or Early Ordovician. Vertebrates such as the lobe-finned fish Tiktaalik started to move on to land in the late Devonian, about 375 million years ago. Other notable animal groups that colonized land environments are Mollusca, Platyhelmintha, Annelida, Tardigrada, Onychophora, Rotifera, Nematoda. Animals occupy virtually all of earth's habitats and microhabitats, with faunas adapted to salt water, hydrothermal vents, fresh water, hot springs, swamps, forests, pastures, deserts, air, and the interiors of other organisms. Animals are however not particularly heat tolerant; very few of them can survive at constant temperatures above 50 °C (122 °F) or in the most extreme cold deserts of continental Antarctica. The collective global geomorphic influence of animals on the processes shaping the Earth's surface remains largely understudied, with most studies limited to individual species and well-known exemplars. Diversity The blue whale (Balaenoptera musculus) is the largest animal that has ever lived, weighing up to 190 tonnes and measuring up to 33.6 metres (110 ft) long. The largest extant terrestrial animal is the African bush elephant (Loxodonta africana), weighing up to 12.25 tonnes and measuring up to 10.67 metres (35.0 ft) long. The largest terrestrial animals that ever lived were titanosaur sauropod dinosaurs such as Argentinosaurus, which may have weighed as much as 73 tonnes, and Supersaurus which may have reached 39 metres. Several animals are microscopic; some Myxozoa (obligate parasites within the Cnidaria) never grow larger than 20 μm, and one of the smallest species (Myxobolus shekel) is no more than 8.5 μm when fully grown. The following table lists estimated numbers of described extant species for the major animal phyla, along with their principal habitats (terrestrial, fresh water, and marine), and free-living or parasitic ways of life. Species estimates shown here are based on numbers described scientifically; much larger estimates have been calculated based on various means of prediction, and these can vary wildly. For instance, around 25,000–27,000 species of nematodes have been described, while published estimates of the total number of nematode species include 10,000–20,000; 500,000; 10 million; and 100 million. Using patterns within the taxonomic hierarchy, the total number of animal species—including those not yet described—was calculated to be about 7.77 million in 2011.[a] 3,000–6,500 4,000–25,000 Evolutionary origin Evidence of animals is found as long ago as the Cryogenian period. 24-Isopropylcholestane (24-ipc) has been found in rocks from roughly 650 million years ago; it is only produced by sponges and pelagophyte algae. Its likely origin is from sponges based on molecular clock estimates for the origin of 24-ipc production in both groups. Analyses of pelagophyte algae consistently recover a Phanerozoic origin, while analyses of sponges recover a Neoproterozoic origin, consistent with the appearance of 24-ipc in the fossil record. The first body fossils of animals appear in the Ediacaran, represented by forms such as Charnia and Spriggina. It had long been doubted whether these fossils truly represented animals, but the discovery of the animal lipid cholesterol in fossils of Dickinsonia establishes their nature. Animals are thought to have originated under low-oxygen conditions, suggesting that they were capable of living entirely by anaerobic respiration, but as they became specialised for aerobic metabolism they became fully dependent on oxygen in their environments. Many animal phyla first appear in the fossil record during the Cambrian explosion, starting about 539 million years ago, in beds such as the Burgess Shale. Extant phyla in these rocks include molluscs, brachiopods, onychophorans, tardigrades, arthropods, echinoderms and hemichordates, along with numerous now-extinct forms such as the predatory Anomalocaris. The apparent suddenness of the event may however be an artefact of the fossil record, rather than showing that all these animals appeared simultaneously. That view is supported by the discovery of Auroralumina attenboroughii, the earliest known Ediacaran crown-group cnidarian (557–562 mya, some 20 million years before the Cambrian explosion) from Charnwood Forest, England. It is thought to be one of the earliest predators, catching small prey with its nematocysts as modern cnidarians do. Some palaeontologists have suggested that animals appeared much earlier than the Cambrian explosion, possibly as early as 1 billion years ago. Early fossils that might represent animals appear for example in the 665-million-year-old rocks of the Trezona Formation of South Australia. These fossils are interpreted as most probably being early sponges. Trace fossils such as tracks and burrows found in the Tonian period (from 1 gya) may indicate the presence of triploblastic worm-like animals, roughly as large (about 5 mm wide) and complex as earthworms. However, similar tracks are produced by the giant single-celled protist Gromia sphaerica, so the Tonian trace fossils may not indicate early animal evolution. Around the same time, the layered mats of microorganisms called stromatolites decreased in diversity, perhaps due to grazing by newly evolved animals. Objects such as sediment-filled tubes that resemble trace fossils of the burrows of wormlike animals have been found in 1.2 gya rocks in North America, in 1.5 gya rocks in Australia and North America, and in 1.7 gya rocks in Australia. Their interpretation as having an animal origin is disputed, as they might be water-escape or other structures. Phylogeny Animals are monophyletic, meaning they are derived from a common ancestor. Animals are the sister group to the choanoflagellates, with which they form the Choanozoa. Ros-Rocher and colleagues (2021) trace the origins of animals to unicellular ancestors, providing the external phylogeny shown in the cladogram. Uncertainty of relationships is indicated with dashed lines. The animal clade had certainly originated by 650 mya, and may have come into being as much as 800 mya, based on molecular clock evidence for different phyla. Holomycota (inc. fungi) Ichthyosporea Pluriformea Filasterea The relationships at the base of the animal tree have been debated. Other than Ctenophora, the Bilateria and Cnidaria are the only groups with symmetry, and other evidence shows they are closely related. In addition to sponges, Placozoa has no symmetry and was often considered a "missing link" between protists and multicellular animals. The presence of hox genes in Placozoa shows that they were once more complex. The Porifera (sponges) have long been assumed to be sister to the rest of the animals, but there is evidence that the Ctenophora may be in that position. Molecular phylogenetics has supported both the sponge-sister and ctenophore-sister hypotheses. In 2017, Roberto Feuda and colleagues, using amino acid differences, presented both, with the following cladogram for the sponge-sister view that they supported (their ctenophore-sister tree simply interchanging the places of ctenophores and sponges): Porifera Ctenophora Placozoa Cnidaria Bilateria Conversely, a 2023 study by Darrin Schultz and colleagues uses ancient gene linkages to construct the following ctenophore-sister phylogeny: Ctenophora Porifera Placozoa Cnidaria Bilateria Sponges are physically very distinct from other animals, and were long thought to have diverged first, representing the oldest animal phylum and forming a sister clade to all other animals. Despite their morphological dissimilarity with all other animals, genetic evidence suggests sponges may be more closely related to other animals than the comb jellies are. Sponges lack the complex organisation found in most other animal phyla; their cells are differentiated, but in most cases not organised into distinct tissues, unlike all other animals. They typically feed by drawing in water through pores, filtering out small particles of food. The Ctenophora and Cnidaria are radially symmetric and have digestive chambers with a single opening, which serves as both mouth and anus. Animals in both phyla have distinct tissues, but these are not organised into discrete organs. They are diploblastic, having only two main germ layers, ectoderm and endoderm. The tiny placozoans have no permanent digestive chamber and no symmetry; they superficially resemble amoebae. Their phylogeny is poorly defined, and under active research. The remaining animals, the great majority—comprising some 29 phyla and over a million species—form the Bilateria clade, which have a bilaterally symmetric body plan. The Bilateria are triploblastic, with three well-developed germ layers, and their tissues form distinct organs. The digestive chamber has two openings, a mouth and an anus, and in the Nephrozoa there is an internal body cavity, a coelom or pseudocoelom. These animals have a head end (anterior) and a tail end (posterior), a back (dorsal) surface and a belly (ventral) surface, and a left and a right side. A modern consensus phylogenetic tree for the Bilateria is shown below. Xenacoelomorpha Ambulacraria Chordata Ecdysozoa Spiralia Having a front end means that this part of the body encounters stimuli, such as food, favouring cephalisation, the development of a head with sense organs and a mouth. Many bilaterians have a combination of circular muscles that constrict the body, making it longer, and an opposing set of longitudinal muscles, that shorten the body; these enable soft-bodied animals with a hydrostatic skeleton to move by peristalsis. They also have a gut that extends through the basically cylindrical body from mouth to anus. Many bilaterian phyla have primary larvae which swim with cilia and have an apical organ containing sensory cells. However, over evolutionary time, descendant spaces have evolved which have lost one or more of each of these characteristics. For example, adult echinoderms are radially symmetric (unlike their larvae), while some parasitic worms have extremely simplified body structures. Genetic studies have considerably changed zoologists' understanding of the relationships within the Bilateria. Most appear to belong to two major lineages, the protostomes and the deuterostomes. It is often suggested that the basalmost bilaterians are the Xenacoelomorpha, with all other bilaterians belonging to the subclade Nephrozoa. However, this suggestion has been contested, with other studies finding that xenacoelomorphs are more closely related to Ambulacraria than to other bilaterians. Protostomes and deuterostomes differ in several ways. Early in development, deuterostome embryos undergo radial cleavage during cell division, while many protostomes (the Spiralia) undergo spiral cleavage. Animals from both groups possess a complete digestive tract, but in protostomes the first opening of the embryonic gut develops into the mouth, and the anus forms secondarily. In deuterostomes, the anus forms first while the mouth develops secondarily. Most protostomes have schizocoelous development, where cells simply fill in the interior of the gastrula to form the mesoderm. In deuterostomes, the mesoderm forms by enterocoelic pouching, through invagination of the endoderm. The main deuterostome taxa are the Ambulacraria and the Chordata. Ambulacraria are exclusively marine and include acorn worms, starfish, sea urchins, and sea cucumbers. The chordates are dominated by the vertebrates (animals with backbones), which consist of fishes, amphibians, reptiles, birds, and mammals. The protostomes include the Ecdysozoa, named after their shared trait of ecdysis, growth by moulting, Among the largest ecdysozoan phyla are the arthropods and the nematodes. The rest of the protostomes are in the Spiralia, named for their pattern of developing by spiral cleavage in the early embryo. Major spiralian phyla include the annelids and molluscs. History of classification In the classical era, Aristotle divided animals,[d] based on his own observations, into those with blood (roughly, the vertebrates) and those without. The animals were then arranged on a scale from man (with blood, two legs, rational soul) down through the live-bearing tetrapods (with blood, four legs, sensitive soul) and other groups such as crustaceans (no blood, many legs, sensitive soul) down to spontaneously generating creatures like sponges (no blood, no legs, vegetable soul). Aristotle was uncertain whether sponges were animals, which in his system ought to have sensation, appetite, and locomotion, or plants, which did not: he knew that sponges could sense touch and would contract if about to be pulled off their rocks, but that they were rooted like plants and never moved about. In 1758, Carl Linnaeus created the first hierarchical classification in his Systema Naturae. In his original scheme, the animals were one of three kingdoms, divided into the classes of Vermes, Insecta, Pisces, Amphibia, Aves, and Mammalia. Since then, the last four have all been subsumed into a single phylum, the Chordata, while his Insecta (which included the crustaceans and arachnids) and Vermes have been renamed or broken up. The process was begun in 1793 by Jean-Baptiste de Lamarck, who called the Vermes une espèce de chaos ('a chaotic mess')[e] and split the group into three new phyla: worms, echinoderms, and polyps (which contained corals and jellyfish). By 1809, in his Philosophie Zoologique, Lamarck had created nine phyla apart from vertebrates (where he still had four phyla: mammals, birds, reptiles, and fish) and molluscs, namely cirripedes, annelids, crustaceans, arachnids, insects, worms, radiates, polyps, and infusorians. In his 1817 Le Règne Animal, Georges Cuvier used comparative anatomy to group the animals into four embranchements ('branches' with different body plans, roughly corresponding to phyla), namely vertebrates, molluscs, articulated animals (arthropods and annelids), and zoophytes (radiata) (echinoderms, cnidaria and other forms). This division into four was followed by the embryologist Karl Ernst von Baer in 1828, the zoologist Louis Agassiz in 1857, and the comparative anatomist Richard Owen in 1860. In 1874, Ernst Haeckel divided the animal kingdom into two subkingdoms: Metazoa (multicellular animals, with five phyla: coelenterates, echinoderms, articulates, molluscs, and vertebrates) and Protozoa (single-celled animals), including a sixth animal phylum, sponges. The protozoa were later moved to the former kingdom Protista, leaving only the Metazoa as a synonym of Animalia. In human culture The human population exploits a large number of other animal species for food, both of domesticated livestock species in animal husbandry and, mainly at sea, by hunting wild species. Marine fish of many species are caught commercially for food. A smaller number of species are farmed commercially. Humans and their livestock make up more than 90% of the biomass of all terrestrial vertebrates, and almost as much as all insects combined. Invertebrates including cephalopods, crustaceans, insects—principally bees and silkworms—and bivalve or gastropod molluscs are hunted or farmed for food, fibres. Chickens, cattle, sheep, pigs, and other animals are raised as livestock for meat across the world. Animal fibres such as wool and silk are used to make textiles, while animal sinews have been used as lashings and bindings, and leather is widely used to make shoes and other items. Animals have been hunted and farmed for their fur to make items such as coats and hats. Dyestuffs including carmine (cochineal), shellac, and kermes have been made from the bodies of insects. Working animals including cattle and horses have been used for work and transport from the first days of agriculture. Animals such as the fruit fly Drosophila melanogaster serve a major role in science as experimental models. Animals have been used to create vaccines since their discovery in the 18th century. Some medicines such as the cancer drug trabectedin are based on toxins or other molecules of animal origin. People have used hunting dogs to help chase down and retrieve animals, and birds of prey to catch birds and mammals, while tethered cormorants have been used to catch fish. Poison dart frogs have been used to poison the tips of blowpipe darts. A wide variety of animals are kept as pets, from invertebrates such as tarantulas, octopuses, and praying mantises, reptiles such as snakes and chameleons, and birds including canaries, parakeets, and parrots all finding a place. However, the most kept pet species are mammals, namely dogs, cats, and rabbits. There is a tension between the role of animals as companions to humans, and their existence as individuals with rights of their own. A wide variety of terrestrial and aquatic animals are hunted for sport. The signs of the Western and Chinese zodiacs are based on animals. In China and Japan, the butterfly has been seen as the personification of a person's soul, and in classical representation the butterfly is also the symbol of the soul. Animals have been the subjects of art from the earliest times, both historical, as in ancient Egypt, and prehistoric, as in the cave paintings at Lascaux. Major animal paintings include Albrecht Dürer's 1515 The Rhinoceros, and George Stubbs's c. 1762 horse portrait Whistlejacket. Insects, birds and mammals play roles in literature and film, such as in giant bug movies. Animals including insects and mammals feature in mythology and religion. The scarab beetle was sacred in ancient Egypt, and the cow is sacred in Hinduism. Among other mammals, deer, horses, lions, bats, bears, and wolves are the subjects of myths and worship. See also Notes References External links
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[SOURCE: https://en.wikipedia.org/wiki/Python_(programming_language)#cite_note-192] \| [TOKENS: 4314]
Contents Python (programming language) Python is a high-level, general-purpose programming language. Its design philosophy emphasizes code readability with the use of significant indentation. Python is dynamically type-checked and garbage-collected. It supports multiple programming paradigms, including structured (particularly procedural), object-oriented and functional programming. Guido van Rossum began working on Python in the late 1980s as a successor to the ABC programming language. Python 3.0, released in 2008, was a major revision and not completely backward-compatible with earlier versions. Beginning with Python 3.5, capabilities and keywords for typing were added to the language, allowing optional static typing. As of 2026[update], the Python Software Foundation supports Python 3.10, 3.11, 3.12, 3.13, and 3.14, following the project's annual release cycle and five-year support policy. Python 3.15 is currently in the alpha development phase, and the stable release is expected to come out in October 2026. Earlier versions in the 3.x series have reached end-of-life and no longer receive security updates. Python has gained widespread use in the machine learning community. It is widely taught as an introductory programming language. Since 2003, Python has consistently ranked in the top ten of the most popular programming languages in the TIOBE Programming Community Index, which ranks based on searches in 24 platforms. History Python was conceived in the late 1980s by Guido van Rossum at Centrum Wiskunde & Informatica (CWI) in the Netherlands. It was designed as a successor to the ABC programming language, which was inspired by SETL, capable of exception handling and interfacing with the Amoeba operating system. Python implementation began in December 1989. Van Rossum first released it in 1991 as Python 0.9.0. Van Rossum assumed sole responsibility for the project, as the lead developer, until 12 July 2018, when he announced his "permanent vacation" from responsibilities as Python's "benevolent dictator for life" (BDFL); this title was bestowed on him by the Python community to reflect his long-term commitment as the project's chief decision-maker. (He has since come out of retirement and is self-titled "BDFL-emeritus".) In January 2019, active Python core developers elected a five-member Steering Council to lead the project. The name Python derives from the British comedy series Monty Python's Flying Circus. (See § Naming.) Python 2.0 was released on 16 October 2000, featuring many new features such as list comprehensions, cycle-detecting garbage collection, reference counting, and Unicode support. Python 2.7's end-of-life was initially set for 2015, and then postponed to 2020 out of concern that a large body of existing code could not easily be forward-ported to Python 3. It no longer receives security patches or updates. While Python 2.7 and older versions are officially unsupported, a different unofficial Python implementation, PyPy, continues to support Python 2, i.e., "2.7.18+" (plus 3.11), with the plus signifying (at least some) "backported security updates". Python 3.0 was released on 3 December 2008, and was a major revision and not completely backward-compatible with earlier versions, with some new semantics and changed syntax. Python 2.7.18, released in 2020, was the last release of Python 2. Several releases in the Python 3.x series have added new syntax to the language, and made a few (considered very minor) backward-incompatible changes. As of January 2026[update], Python 3.14.3 is the latest stable release. All older 3.x versions had a security update down to Python 3.9.24 then again with 3.9.25, the final version in 3.9 series. Python 3.10 is, since November 2025, the oldest supported branch. Python 3.15 has an alpha released, and Android has an official downloadable executable available for Python 3.14. Releases receive two years of full support followed by three years of security support. Design philosophy and features Python is a multi-paradigm programming language. Object-oriented programming and structured programming are fully supported, and many of their features support functional programming and aspect-oriented programming – including metaprogramming and metaobjects. Many other paradigms are supported via extensions, including design by contract and logic programming. Python is often referred to as a 'glue language' because it is purposely designed to be able to integrate components written in other languages. Python uses dynamic typing and a combination of reference counting and a cycle-detecting garbage collector for memory management. It uses dynamic name resolution (late binding), which binds method and variable names during program execution. Python's design offers some support for functional programming in the "Lisp tradition". It has filter, map, and reduce functions; list comprehensions, dictionaries, sets, and generator expressions. The standard library has two modules (itertools and functools) that implement functional tools borrowed from Haskell and Standard ML. Python's core philosophy is summarized in the Zen of Python (PEP 20) written by Tim Peters, which includes aphorisms such as these: However, Python has received criticism for violating these principles and adding unnecessary language bloat. Responses to these criticisms note that the Zen of Python is a guideline rather than a rule. The addition of some new features had been controversial: Guido van Rossum resigned as Benevolent Dictator for Life after conflict about adding the assignment expression operator in Python 3.8. Nevertheless, rather than building all functionality into its core, Python was designed to be highly extensible via modules. This compact modularity has made it particularly popular as a means of adding programmable interfaces to existing applications. Van Rossum's vision of a small core language with a large standard library and easily extensible interpreter stemmed from his frustrations with ABC, which represented the opposite approach. Python claims to strive for a simpler, less-cluttered syntax and grammar, while giving developers a choice in their coding methodology. Python lacks do .. while loops, which Rossum considered harmful. In contrast to Perl's motto "there is more than one way to do it", Python advocates an approach where "there should be one – and preferably only one – obvious way to do it". In practice, however, Python provides many ways to achieve a given goal. There are at least three ways to format a string literal, with no certainty as to which one a programmer should use. Alex Martelli is a Fellow at the Python Software Foundation and Python book author; he wrote that "To describe something as 'clever' is not considered a compliment in the Python culture." Python's developers typically prioritize readability over performance. For example, they reject patches to non-critical parts of the CPython reference implementation that would offer increases in speed that do not justify the cost of clarity and readability.[failed verification] Execution speed can be improved by moving speed-critical functions to extension modules written in languages such as C, or by using a just-in-time compiler like PyPy. Also, it is possible to transpile to other languages. However, this approach either fails to achieve the expected speed-up, since Python is a very dynamic language, or only a restricted subset of Python is compiled (with potential minor semantic changes). Python is meant to be a fun language to use. This goal is reflected in the name – a tribute to the British comedy group Monty Python – and in playful approaches to some tutorials and reference materials. For instance, some code examples use the terms "spam" and "eggs" (in reference to a Monty Python sketch), rather than the typical terms "foo" and "bar". A common neologism in the Python community is pythonic, which has a broad range of meanings related to program style: Pythonic code may use Python idioms well; be natural or show fluency in the language; or conform with Python's minimalist philosophy and emphasis on readability. Syntax and semantics Python is meant to be an easily readable language. Its formatting is visually uncluttered and often uses English keywords where other languages use punctuation. Unlike many other languages, it does not use curly brackets to delimit blocks, and semicolons after statements are allowed but rarely used. It has fewer syntactic exceptions and special cases than C or Pascal. Python uses whitespace indentation, rather than curly brackets or keywords, to delimit blocks. An increase in indentation comes after certain statements; a decrease in indentation signifies the end of the current block. Thus, the program's visual structure accurately represents its semantic structure. This feature is sometimes termed the off-side rule. Some other languages use indentation this way; but in most, indentation has no semantic meaning. The recommended indent size is four spaces. Python's statements include the following: The assignment statement (=) binds a name as a reference to a separate, dynamically allocated object. Variables may subsequently be rebound at any time to any object. In Python, a variable name is a generic reference holder without a fixed data type; however, it always refers to some object with a type. This is called dynamic typing—in contrast to statically-typed languages, where each variable may contain only a value of a certain type. Python does not support tail call optimization or first-class continuations; according to Van Rossum, the language never will. However, better support for coroutine-like functionality is provided by extending Python's generators. Before 2.5, generators were lazy iterators; data was passed unidirectionally out of the generator. From Python 2.5 on, it is possible to pass data back into a generator function; and from version 3.3, data can be passed through multiple stack levels. Python's expressions include the following: In Python, a distinction between expressions and statements is rigidly enforced, in contrast to languages such as Common Lisp, Scheme, or Ruby. This distinction leads to duplicating some functionality, for example: A statement cannot be part of an expression; because of this restriction, expressions such as list and dict comprehensions (and lambda expressions) cannot contain statements. As a particular case, an assignment statement such as a = 1 cannot be part of the conditional expression of a conditional statement. Python uses duck typing, and it has typed objects but untyped variable names. Type constraints are not checked at definition time; rather, operations on an object may fail at usage time, indicating that the object is not of an appropriate type. Despite being dynamically typed, Python is strongly typed, forbidding operations that are poorly defined (e.g., adding a number and a string) rather than quietly attempting to interpret them. Python allows programmers to define their own types using classes, most often for object-oriented programming. New instances of classes are constructed by calling the class, for example, SpamClass() or EggsClass()); the classes are instances of the metaclass type (which is an instance of itself), thereby allowing metaprogramming and reflection. Before version 3.0, Python had two kinds of classes, both using the same syntax: old-style and new-style. Current Python versions support the semantics of only the new style. Python supports optional type annotations. These annotations are not enforced by the language, but may be used by external tools such as mypy to catch errors. Python includes a module typing including several type names for type annotations. Also, mypy supports a Python compiler called mypyc, which leverages type annotations for optimization. 1.33333 frozenset() Python includes conventional symbols for arithmetic operators (+, -, , /), the floor-division operator //, and the modulo operator %. (With the modulo operator, a remainder can be negative, e.g., 4 % -3 == -2.) Also, Python offers the * symbol for exponentiation, e.g. 53 == 125 and 90.5 == 3.0. Also, it offers the matrix‑multiplication operator @ . These operators work as in traditional mathematics; with the same precedence rules, the infix operators + and - can also be unary, to represent positive and negative numbers respectively. Division between integers produces floating-point results. The behavior of division has changed significantly over time: In Python terms, the / operator represents true division (or simply division), while the // operator represents floor division. Before version 3.0, the / operator represents classic division. Rounding towards negative infinity, though a different method than in most languages, adds consistency to Python. For instance, this rounding implies that the equation (a + b)//b == a//b + 1 is always true. Also, the rounding implies that the equation b*(a//b) + a%b == a is valid for both positive and negative values of a. As expected, the result of a%b lies in the half-open interval [0, b), where b is a positive integer; however, maintaining the validity of the equation requires that the result must lie in the interval (b, 0] when b is negative. Python provides a round function for rounding a float to the nearest integer. For tie-breaking, Python 3 uses the round to even method: round(1.5) and round(2.5) both produce 2. Python versions before 3 used the round-away-from-zero method: round(0.5) is 1.0, and round(-0.5) is −1.0. Python allows Boolean expressions that contain multiple equality relations to be consistent with general usage in mathematics. For example, the expression a < b < c tests whether a is less than b and b is less than c. C-derived languages interpret this expression differently: in C, the expression would first evaluate a < b, resulting in 0 or 1, and that result would then be compared with c. Python uses arbitrary-precision arithmetic for all integer operations. The Decimal type/class in the decimal module provides decimal floating-point numbers to a pre-defined arbitrary precision with several rounding modes. The Fraction class in the fractions module provides arbitrary precision for rational numbers. Due to Python's extensive mathematics library and the third-party library NumPy, the language is frequently used for scientific scripting in tasks such as numerical data processing and manipulation. Functions are created in Python by using the def keyword. A function is defined similarly to how it is called, by first providing the function name and then the required parameters. Here is an example of a function that prints its inputs: To assign a default value to a function parameter in case no actual value is provided at run time, variable-definition syntax can be used inside the function header. Code examples "Hello, World!" program: Program to calculate the factorial of a non-negative integer: Libraries Python's large standard library is commonly cited as one of its greatest strengths. For Internet-facing applications, many standard formats and protocols such as MIME and HTTP are supported. The language includes modules for creating graphical user interfaces, connecting to relational databases, generating pseudorandom numbers, arithmetic with arbitrary-precision decimals, manipulating regular expressions, and unit testing. Some parts of the standard library are covered by specifications—for example, the Web Server Gateway Interface (WSGI) implementation wsgiref follows PEP 333—but most parts are specified by their code, internal documentation, and test suites. However, because most of the standard library is cross-platform Python code, only a few modules must be altered or rewritten for variant implementations. As of 13 March 2025,[update] the Python Package Index (PyPI), the official repository for third-party Python software, contains over 614,339 packages. Development environments Most[which?] Python implementations (including CPython) include a read–eval–print loop (REPL); this permits the environment to function as a command line interpreter, with which users enter statements sequentially and receive results immediately. Also, CPython is bundled with an integrated development environment (IDE) called IDLE, which is oriented toward beginners.[citation needed] Other shells, including IDLE and IPython, add additional capabilities such as improved auto-completion, session-state retention, and syntax highlighting. Standard desktop IDEs include PyCharm, Spyder, and Visual Studio Code; there are web browser-based IDEs, such as the following environments: Implementations CPython is the reference implementation of Python. This implementation is written in C, meeting the C11 standard since version 3.11. Older versions use the C89 standard with several select C99 features, but third-party extensions are not limited to older C versions—e.g., they can be implemented using C11 or C++. CPython compiles Python programs into an intermediate bytecode, which is then executed by a virtual machine. CPython is distributed with a large standard library written in a combination of C and native Python. CPython is available for many platforms, including Windows and most modern Unix-like systems, including macOS (and Apple M1 Macs, since Python 3.9.1, using an experimental installer). Starting with Python 3.9, the Python installer intentionally fails to install on Windows 7 and 8; Windows XP was supported until Python 3.5, with unofficial support for VMS. Platform portability was one of Python's earliest priorities. During development of Python 1 and 2, even OS/2 and Solaris were supported; since that time, support has been dropped for many platforms. All current Python versions (since 3.7) support only operating systems that feature multithreading, by now supporting not nearly as many operating systems (dropping many outdated) than in the past. All alternative implementations have at least slightly different semantics. For example, an alternative may include unordered dictionaries, in contrast to other current Python versions. As another example in the larger Python ecosystem, PyPy does not support the full C Python API. Creating an executable with Python often is done by bundling an entire Python interpreter into the executable, which causes binary sizes to be massive for small programs, yet there exist implementations that are capable of truly compiling Python. Alternative implementations include the following: Stackless Python is a significant fork of CPython that implements microthreads. This implementation uses the call stack differently, thus allowing massively concurrent programs. PyPy also offers a stackless version. Just-in-time Python compilers have been developed, but are now unsupported: There are several compilers/transpilers to high-level object languages; the source language is unrestricted Python, a subset of Python, or a language similar to Python: There are also specialized compilers: Some older projects existed, as well as compilers not designed for use with Python 3.x and related syntax: A performance comparison among various Python implementations, using a non-numerical (combinatorial) workload, was presented at EuroSciPy '13. In addition, Python's performance relative to other programming languages is benchmarked by The Computer Language Benchmarks Game. There are several approaches to optimizing Python performance, despite the inherent slowness of an interpreted language. These approaches include the following strategies or tools: Language Development Python's development is conducted mostly through the Python Enhancement Proposal (PEP) process; this process is the primary mechanism for proposing major new features, collecting community input on issues, and documenting Python design decisions. Python coding style is covered in PEP 8. Outstanding PEPs are reviewed and commented on by the Python community and the steering council. Enhancement of the language corresponds with development of the CPython reference implementation. The mailing list python-dev is the primary forum for the language's development. Specific issues were originally discussed in the Roundup bug tracker hosted by the foundation. In 2022, all issues and discussions were migrated to GitHub. Development originally took place on a self-hosted source-code repository running Mercurial, until Python moved to GitHub in January 2017. CPython's public releases have three types, distinguished by which part of the version number is incremented: Many alpha, beta, and release-candidates are also released as previews and for testing before final releases. Although there is a rough schedule for releases, they are often delayed if the code is not ready yet. Python's development team monitors the state of the code by running a large unit test suite during development. The major academic conference on Python is PyCon. Also, there are special Python mentoring programs, such as PyLadies. Naming Python's name is inspired by the British comedy group Monty Python, whom Python creator Guido van Rossum enjoyed while developing the language. Monty Python references appear frequently in Python code and culture; for example, the metasyntactic variables often used in Python literature are spam and eggs, rather than the traditional foo and bar. Also, the official Python documentation contains various references to Monty Python routines. Python users are sometimes referred to as "Pythonistas". Languages influenced by Python See also Notes References Further reading External links
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[SOURCE: https://en.wikipedia.org/wiki/Thirty-seventh_government_of_Israel#cite_note-4] \| [TOKENS: 9915]
Contents Thirty-seventh government of Israel The thirty-seventh government of Israel is the current cabinet of Israel, formed on 29 December 2022, following the Knesset election the previous month. The coalition government currently consists of five parties — Likud, Shas, Otzma Yehudit, Religious Zionist Party and New Hope — and is led by Benjamin Netanyahu, who took office as the prime minister of Israel for the sixth time. The government is widely regarded as the most right-wing government in the country's history, and includes far-right politicians. Several of the government's policy proposals have led to controversies, both within Israel and abroad, with the government's attempts at reforming the judiciary leading to a wave of demonstrations across the country. Following the outbreak of the Gaza war, opposition leader Yair Lapid initiated discussions with Netanyahu on the formation of an emergency government. On 11 October 2023, National Unity MKs Benny Gantz, Gadi Eisenkot, Gideon Sa'ar, Hili Tropper, and Yifat Shasha-Biton joined the Security Cabinet of Israel to form an emergency national unity government. Their accession to the Security Cabinet and to the government (as ministers without portfolio) was approved by the Knesset the following day. Gantz, Netanyahu, and Defense Minister Yoav Gallant became part of the newly formed Israeli war cabinet, with Eisenkot and Ron Dermer serving as observers. National Unity left the government in June 2024. New Hope rejoined the government in September. Otzma Yehudit announced on 19 January 2025 that it had withdrawn from the government, which took effect on 21 January, following the cabinet's acceptance of the three-phase Gaza war ceasefire proposal, though it rejoined two months later. United Torah Judaism left the government in July 2025 over dissatisfaction with the government's draft conscription law. Shas left the government several days later, though it remains part of the coalition. Background The right-wing bloc of parties, led by Benjamin Netanyahu, known in Israel as the national camp, won 64 of the 120 seats in the elections for the Knesset, while the coalition led by the incumbent prime minister Yair Lapid won 51 seats. The new majority has been variously described as the most right-wing government in Israeli history, as well as Israel's most religious government. Shortly after the elections, Lapid conceded to Netanyahu, and congratulated him, wishing him luck "for the sake of the Israeli people". On 15 November, the swearing-in ceremony for the newly elected members of the 25th Knesset was held during the opening session. The vote to appoint a new Speaker of the Knesset, which is usually conducted at the opening session, as well as the swearing in of cabinet members were postponed since ongoing coalition negotiations had not yet resulted in agreement on these positions. Government formation Yair Lapid Yesh Atid Benjamin Netanyahu Likud On 3 November 2022, Netanyahu told his aide Yariv Levin to begin informal coalition talks with allied parties, after 97% of the vote was counted. The leader of the Shas party Aryeh Deri met with Yitzhak Goldknopf, the leader of United Torah Judaism and its Agudat Yisrael faction, on 4 November. The two parties agreed to cooperate as members of the next government. The Degel HaTorah faction of United Torah Judaism stated on 5 November that it will maintain its ideological stance about not seeking any ministerial posts, as per the instruction of its spiritual leader Rabbi Gershon Edelstein, but will seek other senior posts like Knesset committee chairmen and deputy ministers. Netanyahu himself started holding talks on 6 November. He first met with Moshe Gafni, the leader of Degel HaTorah, and then with Goldknopf. Meanwhile, the Religious Zionist Party leader Bezalel Smotrich and the leader of its Otzma Yehudit faction Itamar Ben-Gvir pledged that they would not enter the coalition without the other faction. Gafni later met with Smotrich for coalition talks. Smotrich then met with Netanyahu. On 7 November, Netanyahu met with Ben-Gvir who demanded the Ministry of Public Security with expanded powers for himself and the Ministry of Education or Transport and Road Safety for Yitzhak Wasserlauf. A major demand among all of Netanyahu's allies was that the Knesset be allowed to ignore the rulings of the Supreme Court. Netanyahu met with the Noam faction leader and its sole MK Avi Maoz on 8 November after he threatened to boycott the coalition. He demanded complete control of the Western Wall by the Haredi rabbinate and removal of what he considered as anti-Zionist and anti-Jewish content in schoolbooks. President Isaac Herzog began consultations with heads of all the political parties on 9 November after the election results were certified. During the consultations, he expressed his reservations about Ben-Gvir becoming a member in the next government. Shas met with Likud for coalition talks on 10 November. By 11 November, Netanyahu had secured recommendations from 64 MKs, which constituted a majority. He was given the mandate to form the thirty-seventh government of Israel by President Herzog on 13 November. Otzma Yehudit and Noam officially split from Religious Zionism on 20 November as per a pre-election agreement. On 25 November, Otzma Yehudit and Likud signed a coalition agreement, under which Ben-Gvir will assume the newly created position of National Security Minister, whose powers would be more expansive than that of the Minister of Public Security, including overseeing the Israel Police and the Israel Border Police in the West Bank, as well as giving powers to authorities to shoot thieves stealing from military bases. Yitzhak Wasserlauf was given the Ministry for the Development of the Negev and the Galilee with expanded powers to regulate new West Bank settlements, while separating it from the "Periphery" portfolio, which will be given to Shas. The deal also includes giving the Ministry of Heritage to Amihai Eliyahu, separating it from the "Jerusalem Affairs" portfolio, the chairmanship of the Knesset's Public Security Committee to Zvika Fogel and that of the Special Committee for the Israeli Citizens' Fund to Limor Son Har-Melech, the post of Deputy Economic Minister to Almog Cohen, establishment of a national guard, and expansion of mobilization of reservists in the Border Police. Netanyahu and Maoz signed a coalition agreement on 27 November, under which the latter would become a deputy minister, would head an agency on Jewish identity in the Prime Minister's Office, and would also head Nativ, which processes the aliyah from the former Soviet Union. The agency for Jewish identity would have authority over educational content taught outside the regular curriculum in schools, in addition to the department of the Ministry of Education overseeing external teaching and partnerships, which would bring nonofficial organisations permitted to teach and lecture at schools under its purview. Likud signed a coalition agreement with the Religious Zionist Party on 1 December. Under the deal, Smotrich would serve as the Minister of Finance in rotation with Aryeh Deri, and the party will receive the post of a minister within the Ministry of Defense with control over the departments administering settlement and open lands under the Coordinator of Government Activities in the Territories, in addition to another post of a deputy minister. The deal also includes giving the post of Minister of Aliyah and Integration to Ofir Sofer, the newly created National Missions Ministry to Orit Strook, and the chairmanship of the Knesset's Constitution, Law and Justice Committee to Simcha Rothman. Likud and United Torah Judaism signed a coalition agreement on 6 December, to allow request for an extension to the deadline. Under it, the party would receive the Ministry of Construction and Housing, the chairmanship of the Knesset Finance Committee which will be given to Moshe Gafni, the Ministry of Jerusalem and Tradition (which would replace the Ministry of Jerusalem Affairs and Heritage), in addition to several posts of deputy ministers and chairmanships of Knesset committees. Likud also signed a deal with Shas by 8 December, securing interim coalition agreements with all of their allies. Under the deal, Deri will first serve as the Minister of Interior and Health, before rotating posts with Smotrich after two years. The party will also receive the Ministry of Religious Services and Welfare Ministries, as well as posts of deputy ministers in the Ministry of Education and Interior. The vote to replace then-incumbent Knesset speaker Mickey Levy was scheduled for 13 December, after Likud and its allies secured the necessary number of signatures for it. Yariv Levin of Likud was elected as an interim speaker by 64 votes, while his opponents Merav Ben-Ari of Yesh Atid and Ayman Odeh of Hadash received 45 and five votes respectively. Netanyahu asked Herzog for a 14-day extension after the agreement with Shas to finalise the roles his allied parties would play. Herzog on 9 December extended the deadline to 21 December. On that date, Netanyahu informed Herzog that he had succeeded in forming a coalition, with the new government expected to be sworn in by 2 January 2023. The government was sworn in on 29 December 2022. Timeline Israeli law stated that people convicted of crimes cannot serve in the government. An amendment to that law was made in late 2022, known colloquially as the Deri Law, to allow those who had been convicted without prison time to serve. This allowed Deri to be appointed to the cabinet. Shas leader Aryeh Deri was appointed to be Minister of Health, Minister of the Interior, and Vice Prime Minister in December 2022. He was fired in January 2023, following a Supreme Court decision that his appointment was unreasonable, since he had been convicted of fraud, and had promised not to seek government roles through a plea deal. In March 2023, Defence Minister Yoav Gallant called on the government to delay legislation related to the judicial reform. Prime Minister Netanyahu announced that he had been dismissed from his position, leading to the continuation of mass protests across the country (which had started in January in Tel Aviv). Gallant continued to serve as a minister as he had not received formal notice of dismissal, and two weeks later it was announced that Netanyahu had reversed his decision. Public Safety Minister Itamar Ben-Gvir (Otzma Yehudit leader) and Minister of Justice Yariv Levin (Likud) both threatened to resign if the judicial reform was delayed.[better source needed] After the outbreak of the Gaza war, five members of the National Unity party joined the government as ministers without portfolio, with leader Benny Gantz being made a member of the new Israeli war cabinet (along with Netanyahu and Gallant). As the war progressed, minister of national security Itamar Ben-Gvir threatened to leave the government if the war was ended. A month later in mid December, he again threatened to leave if the war did not maintain "full strength". Gideon Sa'ar stated on 16 March that his New Hope party would resign from the government and join the opposition if Prime Minister Benjamin Netanyahu did not appoint him to the Israeli war cabinet. Netanyahu did not do so, resulting in Sa'ar's New Hope party leaving the government nine days later, reducing the size of the coalition from 76 MKs to 72. Ben-Gvir and Bezalel Smotrich, of the National Religious Party–Religious Zionism party, have indicated that they will withdraw their parties from the government if the January 2025 Gaza war ceasefire is adopted, which would bring down the government. Ben-Gvir announced on 5 June that the members of his party would be allowed to vote as they wish, though his party resumed support on 9 June. On 18 May, Gantz set an 8 June deadline for withdrawal from the coalition, which was delayed by a day following the 2024 Nuseirat rescue operation. Gantz and his party left the government on 9 June, giving the government 64 seats in the Knesset. Sa'ar and his New Hope party rejoined the Netanyahu government on 30 September, increasing the number of seats held by the government to 68. The High Court of Justice ruled on 28 March 2024 that yeshiva funds would no longer be available for students who are "eligible for enlistment", effectively allowing ultra-Orthodox Jews to be drafted into the IDF. Attorney general Gali Baharav-Miara indicated on 31 March that the conscription process must begin on 1 April. The court ruled on 25 June that the IDF must begin to draft yeshiva students. Likud announced on 7 July that it would not put forward any legislation after Shas and United Torah Judaism said that they would boycott the plenary session over the lack of legislation dealing with the Haredi draft. The Ultra-Orthodox boycott continued for a second day, with UTJ briefly ending its boycott on 9 July to unsuccessfully vote in favor of a bill which would have weakened the Law of Return. Yuli Edelstein, who was replaced by Boaz Bismuth on the Foreign Affairs and Defense Committee in early August, published a draft version of the conscription law shortly before his ouster. Bismuth cancelled the work on the draft law in September 2025, which Edelstein called "a shame." Bismuth released the official version of the draft law in late November 2025. It weakened penalties for draft evaders, with Edelstein saying it was "the exact opposite" of the bill which he attempted to pass. Members of Otzma Yehudit resigned from the government on 19 January 2025 over the January 2025 Gaza war ceasefire, which took effect on 21 January. The members rejoined in March, following the "resumption" of the war in Gaza. Avi Maoz of the Noam party left the government in March 2025. On 4 June 2025, senior rabbis for United Torah Judaism Dov Lando and Moshe Hillel Hirsch instructed the party's MKs to pass a bill which would dissolve the Knesset. Yesh Atid, Yisrael Beytenu and The Democrats announced that they will "submit a bill" for dissolution on 11 June, with Yesh Atid tabling the bill on 4 June. There were also reports that Shas would vote in favor of Knesset dissolution amidst division within the governing coalition on Haredi conscription. This jeopardized the coalition's majority and would have triggered new elections if the bill passed. The following day, Agudat Yisrael, one of the United Torah Judaism factions, confirmed that it would submit a bill to dissolve the Knesset. Asher Medina, a Shas spokesman, indicated on 9 June that the party would vote in favor of a preliminary bill to dissolve the Knesset. The rabbis of Degel HaTorah instructed the parties' MKs on 12 June 2025 to oppose the dissolution of the Knesset, which was followed by Yuli Edelstein and the Shas and Degel HaTorah parties announcing that a deal had been reached, with "rabbinical leaders" telling their parties to delay the dissolution vote by a week. Shas and Degel HaTorah voted against the dissolution bill, which led to the bill failing its preliminary reading in a vote of 61 against and 53 in favor. MKs Ya'akov Tessler and Moshe Roth of Agudat Yisrael voted in favor of dissolution. Another dissolution bill will be unable to be brought forward for six months. If the bill had passed its preliminary reading, in addition to three more readings, an election would have been held in approximately three months; The Jerusalem Post posited it would have been held in October. Degel HaTorah announced on 14 July 2025 that it would leave the government because members of the party were dissatisfied after viewing the proposed draft bill by Yuli Edelstein regarding Haredi exemptions from the Israeli draft. Several hours later, Agudat Yisrael announced that it would also leave the government. Deputy Transportation Minister Uri Maklev, Moshe Gafni, the head of the Knesset Finance Committee, Ya'akov Asher, the head of the Knesset Interior and Environment Protection Committee and Jerusalem Affairs minister Meir Porush all submitted their resignations, with their resignations taking effect in 48 hours. Sports Minister Ya'akov Tessler and "Special Committee for Public Petitions Chair" Yitzhak Pindrus also submitted resignations. Yisrael Eichler submitted his resignation as the "head of the Knesset Labor and Welfare Committee" the same day. The resignations will leave Netanyahu's government with a 60-seat majority in the Knesset, as Avi Maoz, of the Noam party, left the government in March 2025. Despite Edelstein's ouster in August, a spokesman for UTJ head Yitzhak Goldknopf remarked that it would not change the faction's withdrawal from the government. The religious council for Shas, called the Moetzet Chachmei HaTorah, instructed the party on 16 July to leave the government, but stay in the coalition. The following day, various cabinet ministers submitted their resignations, including "Interior Minister Moshe Arbel, Social Affairs Minister Ya'akov Margi and Religious Services Minister Michael Malchieli." Malchieli reportedly has postponed his resignation so he could attend a 20 July meeting of the panel investigating whether attorney general Gali Baharav-Miara should be dismissed. Deputy Minister of Agriculture Moshe Abutbul, Minister of Health Uriel Buso and Haim Biton, a minister in the Education Ministry, also submitted their resignation letters, while Arbel retracted his resignation letter. The last cabinet member from the party to submit it was Labor Minister Yoav Ben-Tzur. The ministers who resigned will return to the Knesset, replacing MKs Moshe Roth, Yitzhak Pindrus and Eliyahu Baruchi. Members of government Listed below are the current ministers in the government: Principles and priorities According to the agreements signed between Likud and each of its coalition partners, and the incoming government's published guideline principles, its stated priorities are to combat the cost of living, further centralize Orthodox control over the state religious services, pass judicial reforms which include legislation to reduce judicial controls on executive and legislative power, expand settlements in the West Bank, and consider an annexation of the West Bank. Before the vote of confidence in his new government in the Knesset, Netanyahu presented three top priorities for the new government: internal security and governance, halting the nuclear program of Iran, and the development of infrastructure, with a focus on further connecting the center of the country with its periphery. Policies The government's flagship program, centered around reforms in the judicial branch, drew widespread criticism. Critics said it would have negative effects on the separation of powers, the office of the Attorney General, the economy, public health, women and minorities, workers' rights, scientific research, the overall strength of Israel's democracy and its foreign relations. After weeks of public protests on Israel's streets, joined by a growing number of military reservists, Minister of Defense Yoav Gallant spoke against the reform on 25 March, calling for a halt of the legislative process "for the sake of Israel's security". The next day, Netanyahu announced that he would be removed from his post, sparking another wave of protest across Israel and ultimately leading to Netanyahu agreeing to pause the legislation. On 10 April, Netanyahu announced that Gallant would keep his post. On 27 March 2023, after the public protests and general strikes, Netanyahu announced a pause in the reform process to allow for dialogue with opposition parties. However, negotiations aimed at reaching a compromise collapsed in June, and the government resumed its plans to unilaterally pass parts of the legislation. On 24 July 2023, the Knesset passed a bill that curbs the power of the Supreme Court to declare government decisions unreasonable; on 1 January 2024, the Supreme Court struck the bill down. The Knesset passed a "watered-down" version of the judicial reform package in late March 2025 which "changes the composition" of the judicial selection committee. In December 2022 Minister of National Security Itamar Ben-Gvir sought to amend the law that regulates the operations of the Israel Police, such that the ministry will have more direct control of its forces and policies, including its investigative priorities. Attorney General Gali Baharav-Miara objected to the draft proposal, raising concerns that the law would enable the politicization of police work, and the draft was amended to partially address those concerns. Nevertheless, in March 2023 Deputy Attorney General Gil Limon stated that the Attorney General's fears had been realized, referring to several instances of ministerial involvement in the day-to-day work of the otherwise independent police force – statements that were repeated by the Attorney General herself two days later. Separately, Police Commissioner Kobi Shabtai instructed Deputy Commissioners to avoid direct communication with the minister, later stating that "the Israel Police will remain apolitical, and act only according to law". Following appeals by the Association for Civil Rights in Israel and the Movement for Quality Government in Israel, the High Court of Justice instructed Ben-Gvir "to refrain from giving operational directions to the police... [especially] as regards to protests and demonstrations against the government." As talks of halting the judicial reform gained wind during March 2023, Minister of National Security Itamar Ben-Gvir threatened to resign if the legislation implementing the changes was suspended. To appease Ben-Gvir, Prime Minister Netanyahu announced that the government would promote the creation of a new National Guard, to be headed by Ben-Gvir. On 29 March, thousands of Israelis demonstrated in Tel Aviv, Haifa and Jerusalem against this decision. On 1 April, the New York Times quoted Gadeer Nicola, head of the Arab department at the Association for Civil Rights in Israel, as saying "If this thing passes, it will be an imminent danger to the rights of Arab citizens in this country. This will create two separate systems of applying the law. The regular police which will operate against Jewish citizens — and a militarized militia to deal only with Arab citizens." The same day, while speaking on Israel's Channel 13 about those whom he'd like to see enlist in the National Guard, Ben-Gvir specifically mentioned La Familia, the far-right fan club of the Beitar Jerusalem soccer team. On 2 April, Israel's cabinet approved the establishment of a law enforcement body that would operate independently of the police, under Ben-Gvir's authority. According to the decision, the Minister was to establish a committee chaired by the Director General of the Ministry of National Security, with representatives of the ministries of defense, justice and finance, as well as the police and the IDF, to outline the operations of the new organization. The committee's recommendations will be submitted to the government for consideration. Addressing a conference on 4 April, Police Commissioner Kobi Shabtai said that he is not opposed to the establishment of a security body which would answer to the police, but "a separate body? Absolutely not." The police chief said he had warned Ben-Gvir that the establishment of a security body separate from the police is "unnecessary, with extremely high costs that may harm citizens' personal security." During a press conference on 10 April, Prime Minister Netanyahu said, in what has been seen by some news outlets as a concession to the protesters, that "This will not be anyone's militia, it will be a security body, orderly, professional, that will be subordinate to one of the [existing] security bodies." The committee established by the government recommended the government to order the establishment of the National Guard immediately while allocating budgets. The National Guard, under whose command will be a superintendent of the police, will not be subordinate to Ben-Gvir. It will be subordinate to the police commissioner and will be part of Israel Border Police. The Ministry of Defense and Finance opposed the conclusions. The Israeli National Security Council called for further discussion on this. The coalition's efforts to expand the purview of Rabbinical courts; force some organizations, such as hospitals, to enforce certain religious practices; amend the Law Prohibiting Discrimination to allow gender segregation and discrimination on the grounds of religious belief; expand funding for religious causes; and put into law the exemption of yeshiva and kolel students from conscription have drawn criticism. According to the Haaretz op-ed of 7 March 2023, "the current coalition is interested... in modifying the public space so it suits the religious lifestyle. The legal coup is meant to castrate anyone who can prevent it, most of all the HCJ." Several banks and institutional investors, including the Israel Discount Bank and AIG have committed to avoid investing in, or providing credit to any organization that will discriminate against others on ground of religion, race, gender or sexual orientation. A series of technology companies and investment firms including Wiz, Intel Israel, Salesforce and Microsoft Israel Research and Development, have criticized the proposed changes to the Law Prohibiting Discrimination, with Wiz stating that it will require its suppliers to commit to preventing discrimination. Over sixty prominent law firms pledged that they will neither represent, nor do business with discriminating individuals and organizations. Insight Partners, a major private equity fund operating in Israel, released a statement warning against intolerance and any attempt to harm personal liberties. Orit Lahav, chief executive of the women's rights organization Mavoi Satum ("Dead End"), said that "the Rabbinical courts are the most discriminatory institution in the State of Israel... Limiting the HCJ[d] while expanding the jurisdiction of the Rabbinical courts would... cause significant harm to women." Anat Thon Ashkenazy, Director of the Center for Democratic Values and Institutions at the Israel Democracy Institute, said that "almost every part of the reform could harm women... the meaning of an override clause is that even if the court says that the law on gender segregation is illegitimate, is harmful, the Knesset could say 'Okay, we say otherwise'". She added that "there is a very broad institutional framework here, after which there will come legislation that harms women's right and we will have no way of protecting or stopping it." During July 2023, 20 professional medical associations signed a letter of position warning against the ramifications to public health that would result from the exclusion of women from the public sphere. They cited, among others, a rise in prevalence of risk factors for cardiovascular disease, pregnancy-related ailments, psychological distress, and the risk of suicide. On 30 July the Knesset passed an amendment to penal law adding sexual offenses to those offenses whose penalty can be doubled if done on grounds of "nationalistic terrorism, racism or hostility towards a certain community". According to MK Limor Son Har-Melech, the bill is meant to penalize any individual who "[intends to] harm a woman sexually based on her Jewishness". The law was criticized by MK Gilad Kariv as "populist, nationalistic, and dangerous towards the Arab citizens of Israel", and by MK Ahmad Tibi as a "race law", and was objected to by legal advisors at the Ministry of Justice and the Knesset Committee on National Security. Activist Orit Kamir wrote that "the amendment... is neither feminist, equal, nor progressive, but the opposite: it subordinates women's sexuality to the nationalistic, racist patriarchy. It hijacks the Law for Prevention of Sexual Harassment to serve a world view that tags women as sexual objects that personify the nation's honor." Yael Sherer, director of the Lobby to Combat Sexual Violence, criticized the law as being informed by dated ideas about sexual assault, and proposed that MKs "dedicate a session... to give victims of sexual assault an opportunity to come out of the darkness... instead of [submitting] declarative bills that change nothing and are not meant but for grabbing headlines". In Israel, during 2022, 24 women "were murdered because they were women," which was an increase of 50% compared to 2021. A law permitting courts to order men subject to a restraining order following domestic violence offenses to wear electronic tags was drafted during the previous Knesset and had passed its first reading unanimously. On 22 March 2023, the Knesset voted to reject the bill. It had been urged to do so by National Security Minister Itamar Ben-Gvir, who said that the bill was unfair to men. Earlier in the week, Ben-Gvir had blocked the measure from advancing in the ministerial legislative committee. The MKs voting against the bill included Prime Minister Netanyahu. The Association of Families of Murder Victims said that by rejecting the law, National Security Minister Itamar Ben-Gvir "brings joy to violent men and abandons the women threatened with murder… unsupervised restraining orders endanger women's lives even more. They give women the illusion of being protected, and then they are murdered." MK Pnina Tamano-Shata, chairwoman of the Knesset Committee on the Status of Women and Gender Equality, said that "the coalition proved today that it despises women's lives." The NGO Amutat Bat Melech [he], which assists Orthodox and ultra-Orthodox women who suffer from domestic violence, said that: "Rejecting the electronic bracelet bill is disconnected from the terrible reality of seven femicides since the beginning of the year. This is an effective tool of the first degree that could have saved lives and reduced the threat to women suffering from domestic violence. This is a matter of life and death, whose whole purpose is to provide a solution to defend women." The agreement signed by the coalition parties includes the setting up of a committee to draft changes to the Law of Return. Israeli religious parties have long demanded that the "grandchild clause" of the Law of Return be cancelled. This clause grants citizenship to anyone with at least one Jewish grandparent, as long as they do not practice another religion. If the grandchild clause were to be removed from the Law of Return then around 3 million people who are currently eligible for aliyah would no longer be eligible. The heads of the Jewish Agency, the Jewish Federations of North America, the World Zionist Organization and Keren Hayesod sent a joint letter to Prime Minister Netanyahu, expressing their "deep concern" about any changes to the Law of Return, adding that "Any change in the delicate and sensitive status quo on issues such as the Law of Return or conversion could threaten to unravel the ties between us and keep us away from each other." The Executive Council of Australian Jewry and the Zionist Federation of Australia issued a joint statement saying "We… view with deep concern… proposals in relation to religious pluralism and the law of return that risk damaging Israel's… relationship with Diaspora Jewry." On 19 March 2023, Israeli Finance Minister Bezalel Smotrich spoke in Paris at a memorial service for a Likud activist. The lectern at which Smotrich spoke was covered with a flag depicting the 'Greater Land of Israel,' encompassing the whole of Mandatory Palestine, as well as Trans-Jordan. During his speech, Smotrich said that "there's no such thing as Palestinians because there's no such thing as a Palestinian people." He added that the Palestinian people are a fictitious nation invented only to fight the Zionist movement, asking "Is there a Palestinian history or culture? There isn't any." The event received widespread media coverage. On 21 March, a spokesman for the US State Department sharply criticized Smotrich's comments. "The comments, which were delivered at a podium adorned with an inaccurate and provocative map, are offensive, they are deeply concerning, and, candidly, they're dangerous. The Palestinians have a rich history and culture, and the United States greatly values our partnership with the Palestinian people," he said. The Jordanian Foreign Ministry also voiced disapproval: "The Israeli Minister of Finance's use, during his participation in an event held yesterday in Paris, of a map of Israel that includes the borders of the Hashemite Kingdom of Jordan and the occupied Palestinian territories represents a reckless inflammatory act, and a violation of international norms and the Jordanian-Israeli peace treaty." Additionally, a map encompassing Mandatory Palestine and Trans-Jordan with a Jordanian flag on it was placed on a central lectern in the Jordanian Parliament. Jordan's parliament voted to expel the Israeli ambassador. Israel's Ministry of Foreign Affairs released a clarification relating to the matter, stating that "Israel is committed to the 1994 peace agreement with Jordan. There has been no change in the position of the State of Israel, which recognizes the territorial integrity of the Hashemite Kingdom of Jordan". Ahead of a Europe Day event due to take place on 9 May 2023, far-right wing National Security Minister Itamar Ben-Gvir was assigned as a representative of the government and a speaker at the event by the government secretariat, which deals with placing ministers at receptions on the occasion of the national days of the foreign embassies. The European Union requested that Ben-Gvir not attend, but the government did not make changes to the plan. On 8 May, the European delegation to Israel cancelled the reception, stating that: "The EU Delegation to Israel is looking forward to celebrating Europe Day on May 9, as it does every year. Regrettably, this year we have decided to cancel the diplomatic reception, as we do not want to offer a platform to someone whose views contradict the values the European Union stands for. However, the Europe Day cultural event for the Israeli public will be maintained to celebrate with our friends and partners in Israel the strong and constructive bilateral relationship". Israel's Opposition Leader Yair Lapid stated: "Sending Itamar Ben-Gvir to a gathering of EU ambassadors is a serious professional mistake. The government is embarrassing a large group of friendly countries, jeopardizing future votes in international institutions, and damaging our foreign relations. Last year, after a decade of efforts, we succeeded in signing an economic-political agreement with the European Union that will contribute to the Israeli economy and our foreign relations. Why risk it, and for what? Ben-Gvir is not a legitimate person in the international community (and not really in Israel either), and sometimes you have to be both wise and just and simply send someone else". On 23 February 2023, Defense Minister Gallant signed an agreement assigning governmental powers in the West Bank to a body to be headed by Minister Bezalel Smotrich, who will effectively become the governor of the West Bank, controlling almost all areas of life in the area, including planning, building and infrastructure. Israeli governments have hitherto been careful to keep the occupation as a military government. The temporary holding of power by an occupying military force, pending a negotiated settlement, is a principle of international law – an expression of the prohibition against obtaining sovereignty through conquest that was introduced in the wake of World War II. An editorial in Haaretz noted that the assignment of governmental powers in the West Bank to a civilian governor, alongside the plan to expand the dual justice system so that Israeli law will apply fully to settlers in the West Bank, constitutes de jure annexation of the West Bank. On 26 February 2023, following the 2023 Huwara shooting in which two Israelis were killed by an unidentified attacker, hundreds of Israeli settlers attacked the Palestinian town of Huwara and three nearby villages, setting alight hundreds of Palestinian homes (some with people in them), businesses, a school, and numerous vehicles, killing one Palestinian man and injuring 100 others. Bezalel Smotrich subsequently called on Twitter for Huwara to be "wiped out" by the Israeli government. Zvika Fogel MK, of the ultra-nationalist Otzma Yehudit, which forms part of the governing coalition, said that he "looks very favorably upon" the results of the rampage. Members of the coalition proposed an amendment to the Disengagement Law, which would allow Israelis to resettle settlements vacated during the 2005 Israeli disengagement from Gaza and the northern West Bank. The evacuated settlements were considered illegal under international law, according to most countries. The proposal was approved for voting by the Foreign Affairs and Defense Committee on 9 March 2023, while the committee was still waiting for briefing materials from the NSS, IDF, MFA and Shin Bet, and was passed on 21 March. The US has requested clarification from Israeli ambassador Michael Herzog. A US State Department spokesman stated that "The U.S. strongly urges Israel to refrain from allowing the return of settlers to the area covered by the legislation, consistent with both former Prime Minister Sharon and the current Israeli Government's commitment to the United States," noting that the actions represent a clear violation of undertakings given by the Sharon government to the Bush administration in 2005 and Netanyahu's far-right coalition to the Biden administration the previous week. Minister of Communication Shlomo Karhi had initially intended to cut the funding of the Israeli Public Broadcasting Corporation (also known by its blanket branding Kan) by 400 million shekels – roughly half of its total budget – closing several departments, and privatizing content creation. In response, the Director-General of the European Broadcasting Union, Noel Curran, sent two urgent letters to Netanyahu, expressing his concerns and calling on the Israeli government to "safeguard the independence of our Member KAN and ensure it is allowed to operate in a sustainable way, with funding that is both stable, adequate, fair, and transparent." On 25 January 2023, nine journalist organizations representing some of Kan's competitors issued a statement of concern, acknowledging the "important contribution of public broadcasting in creating a worthy, unbiased and non-prejudicial journalistic platform", and noting that "the existence of the [broadcasting] corporation as a substantial public broadcast organization strengthens media as a whole, adding to the competition in the market rather than weakening it." They also expressed their concern that the "real reason" for the proposal was actually "an attempt to silence voices from which... [the Minister] doesn't always draw satisfaction". The same day, hundreds of journalists, actors and filmmakers protested in Tel Aviv. The proposal was eventually put on hold. On 22 February 2023 it was reported that Prime Minister Netanyahu was attempting to appoint his close associate Yossi Shelley as the deputy to the National Statistician — a highly sensitive position in charge of providing accurate data for decision makers. The appointment of Shelley, who did not possess the required qualifications for the role, was withdrawn following publication. In its daily editorial, Haaretz tied this attempt with the judicial reform: "once they take control of the judiciary, law enforcement and public media, they wish to control the state's data base, the dry numerical data it uses to plan its future". Netanyahu also proposed Avi Simhon for the role, and eventually froze all appointments at the Israel Central Bureau of Statistics. Also on 22 February 2023, it was revealed that Yoav Kish, the Minister of Education, was promoting a draft government decision change to the National Library of Israel board of directors which would grant him more power over the institution. In response, the Hebrew University — which owned the library until 2008 – announced that if the draft is accepted, it will withdraw its collections from the library. The university's collections, which according to the university constitute some 80% of the library's collection, include the Agnon archive, the original manuscript of Hatikvah, and the Rothschild Haggadah, the oldest known Haggadah. A group of 300 authors and poets signed an open letter against the move, further noting their objection against "political takeover" of public broadcasting, as well as "any legislation that will castrate the judiciary and damage the democratic foundations of the state of Israel". Several days later, it was reported that a series of donors decided to withhold their donations to the library, totaling some 80 million shekels. On 3 March a petition against the move by 1,500 academics, including Israel Prize laureates, was sent to Kish. The proposal has been seen by some as retribution against Shai Nitzan, the former State Attorney and the library's current rector. On 5 March it was reported that the Legal Advisor to the Ministry of Finance, Asi Messing, was withholding the proposal. According to Messing, the proposal – which was being promoted as part of the Economic Arrangements Law – "was not reviewed... by the qualified personnel in the Ministry of Finance, does not align with any of the common goals of the economic plan, was not agreed to by myself and was not approved by the Attorney General." As of February 2023, the government has been debating several proposals that will significantly weaken the Ministry of Environmental Protection, including reducing the environmental regulation of planning and development and electricity production. One of the main proposals, the transferal of a 3 billion shekel fund meant to finance waste management plants from the Ministry of Environmental Protection to the Ministry of the Interior, was eventually withdrawn. The Minister of Environmental Protection, Idit Silman, has been criticized for using for meeting with climate change denialists, for wasteful and personally-motivated travel on the ministry's expense, for politicizing the role, and for engaging in political activity on the ministry's time. The government has been noted for an unusually high number of dismissals and resignations of senior career civil servants, and for the frequent attempts to replace them with candidates with known political associations, who are often less competent. According to sources, Netanyahu and people in his vicinity are seeking out civil servants who were appointed by the previous government, intent on replacing them with people loyal to him. Governmental nominees for various positions have been criticized for lack of expertise. In addition to the nominee to the position of Deputy National Statistician (see above), the Director General of the Ministry of Finance, Shlomi Heisler; the Director General of the Ministry of Justice, Itamar Donenfeld; and the Director General of Ministry of Transport, Moshe Ben Zaken, have all been criticized for incompetence, lack of familiarity with their Ministries' subject matter, lack of interest in the job, or lack of experience in managing large organizations. It has been reported that in some ministries, senior officials were enacting slowdowns as a means for dealing with the new ministers and director generals. On 28 July the director general of the Ministry of Education resigned, citing as reason the societal "rift". Asaf Zalel, a retired Air Force Brigadier General, was appointed in January. When asked about attempts to appoint his personal friend and attorney to the board of directors of a state-owned company, Minister David Amsalem replied: "that is my job, due to my authority to appoint directors. I put forward people that I know and hold in esteem". Under Minister of Transport Miri Regev, the ministry has either dismissed or lost the heads of the National Public Transport Authority, Israel Airports Authority, National Road Safety Authority, Israel Railways, and several officials in Netivei Israel. The current chair of Netivei Israel is Likud member and Regev associate Yigal Amadi, and the legal counsel is Einav Abuhzira, daughter of a former Likud branch chair. Abuhzira was appointed instead of Elad Berdugo, nephew of Netanyahu surrogate Yaakov Bardugo, after he was disqualified for the role by the Israel Government Companies Authority. In July 2023 the Ministry of Communications, Shlomo Karhi, and the minister in charge of the Israel Government Companies Authority, Dudi Amsalem, deposed the chair of the Israel Postal Company, Michael Vaknin. The chair, who was hired to lead the company's financial recovery after years of operational loss and towards privatization, has gained the support of officials at the Authority and at the Ministry of Finance; nevertheless, the ministers claimed that his performance is inadequate, and nominated in his place Yiftah Ron-Tal, who has known ties to Netanyahu and Smotrich. They also nominated four new directors, two of which have known political associations, and a third who was a witness in Netanyahu's trial. The coalition is allowed to spend a portion of the state's budget on a discretionary basis, meant to coax member parties to reach an agreement on the budget. As of May 2023, the government was pushing an allocation of over 13 billion shekels over two years - almost seven times the amount allocated by the previous government. Most of the funds will be allocated for uses associated with the religious, orthodox and settler communities. The head of the Budget Department at the Ministry of Finance, Yoav Gardos, objected to the allocations, claiming they would exacerbate unemployment in the Orthodox community, which is projected to cost the economy a total of 6.7 trillion shekels in lost produce by 2065. At the onset of the Gaza war and the declaration of a state of national emergency, Minister of Finance Bezalel Smotrich instructed government agencies to continue with the planned distribution of discretionary funds. Corruption During March 2023, the government was promoting an amendment to the Law on Public Service (Gifts) that would allow Netanyahu to receive donations to fund his legal defense. The amendment follows a decision by the High Court of Justice (HCJ) that forced Netanyahu to refund US$270,000 given to him and his wife by his late cousin, Nathan Mileikowsky, for their legal defense. This is in contrast to past statements by Minister of Justice Yariv Levin, who spoke against the possible conflict of interests that can result from such transactions. The bill was opposed by the Attorney General Gali Baharav-Miara, who stressed that it could "create a real opportunity for governmental corruption", and was eventually withdrawn at the end of March. As of March 2023, the coalition was promoting a bill that would prevent judicial review of ministerial appointments. The bill is intended to prevent the HCJ from reviewing the appointment of the twice-convicted chairman of Shas, Aryeh Deri (convicted of bribery, fraud, and breach of trust), to a ministerial position, after his previous appointment was annulled on grounds of unreasonableness. The bill follows on the heels of another amendment, that relaxed the ban on the appointment of convicted criminals, so that Deri - who was handed a suspended sentence after his second conviction - could be appointed. The bill is opposed by the Attorney General, as well as by the Knesset Legal Adviser, Sagit Afik. Israeli law allows for declaring a Prime Minister (as well as several other high-ranking public officials) to be temporarily or permanently incapacitated, but does not specify the conditions which can lead to a declaration of incapacitation. In the case of the Prime Minister, the authority to do so is given to the Attorney General. In March 2023, the coalition advanced a bill that passes this authority from the Attorney General to the government with the approval of the Knesset committee, and clarified that incapacitation can only result from medical or mental conditions. On 3 January 2024, the Supreme Court ruled by a majority of 6 out of 11 that the validity of the law will be postponed to the next Knesset because the bill in its immediate application is a personal law and is intended to serve a distinct personal purpose. Later, the court rejected a petition regarding the definition of Netanyahu as an incapacitated prime minister due to his ongoing trial and conflict of interests. Notes References External links
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[SOURCE: https://en.wikipedia.org/wiki/Fox_spirit] \| [TOKENS: 1881]
Contents Fox spirit Fox spirits, or Huli jing (Chinese: 狐狸精), are Chinese mythological creatures usually capable of shapeshifting, who may either be benevolent or malevolent spirits. In Chinese mythology and folklore, the fox spirit takes variant forms with different meanings, powers, characteristics, and shapes, including huxian (狐仙; 'fox immortal'), hushen (狐神; 'fox god'), husheng (狐聖; 'fox saint'), huwang (狐王; 'fox king'), huyao (狐妖; 'fox demon'), huzu (狐族; 'fox clan'), and jiuweihu (九尾狐; 'nine-tailed fox').[page needed] Fox spirits and nine-tailed foxes appear frequently in Chinese folklore, literature, and mythology. Depending on the story, the fox spirit's presence may be a good or a bad omen. The motif of nine-tailed foxes from Chinese culture was eventually transmitted and introduced to Japanese, Korean, and Vietnamese cultures. Descriptions The nine-tailed fox occurs in the Shanhaijing (Classic of Mountains and Seas), compiled from the Warring States period to the Western Han period (circa fourth to circa first century BC). The work states: 靑丘國在其北其人食五穀衣絲帛其狐四足九尾。The Land of Blue Hills lies to the north where the inhabitants consume the Five Grains, wear silk and worship foxes that have four legs and nine tails. — Shanhaijing In chapter 14 of the Shanhaijing, Guo Pu, a scholar of the Eastern Jin dynasty, had commented that the "nine-tailed fox was an auspicious omen that appeared during times of peace." However, in chapter 1, another aspect of the nine-tailed fox is described: Three hundred li farther east is Qingqiu Mountain, where much jade can be found on its south slope and green cinnabar on its north. There is a beast here whose form resembles a fox with nine tails. It makes a sound like a baby and is a man-eater. Whoever eats it will be protected against insect-poison (gu). In one ancient myth, Yu the Great encountered a white nine-tailed fox, which he interpreted as an auspicious sign that he would marry Nüjiao. In Han iconography, the nine-tailed fox is sometimes depicted at Mount Kunlun and along with Xi Wangmu in her role as the goddess of immortality. According to the first-century Baihutong (Debates in the White Tiger Hall), the fox's nine tails symbolize abundant progeny. During the Han dynasty (202 BC – 9 AD; 25–220 AD), the development of ideas about interspecies transformation had taken place in Chinese culture. The idea that non-human creatures with advancing age could assume human form is presented in works such as the Lunheng by Wang Chong (27–91). As these traditions developed, the fox's capacity for transformation was shaped. Describing the transformation and other features of the fox, Guo Pu (276–324) made the following comment: When a fox is fifty years old, it can transform itself into a woman; when a hundred years old, it becomes a beautiful woman, or a spirit medium, or an adult man who has sexual intercourse with women. Such beings are able to know things at more than a thousand miles' distance; they can poison men by sorcery, or possess and bewilder them, so that they lose their memory and knowledge; and when a fox is thousand years old, it ascends to heaven and becomes a celestial fox. In Duìsúpiān (對俗篇) of the Baopuzi, it is written: Foxes and dholes both can be eight hundred years of age, and when they are five hundred years old, they become enlightened and are able to take up human form. 狐貍、豺狼皆壽八百歲，滿五百歲，則善變為人形。 In a Tang Dynasty story, foxes could become humans by wearing a skull and worshipping the Big Dipper. They would try multiple skulls until they found one that fit without falling off. The Youyang Zazu made a connection between nine-tailed foxes and the divine: Among the arts of the Way, there is a specific doctrine of the celestial fox. [The doctrine] says that the celestial fox has nine tails and a golden color. It serves in the Palace of the Sun and Moon and has its own fu (talisman) and a jiao ritual. It can transcend yin and yang. The fox spirits encountered in tales and legends are usually females and appear as young, beautiful women. One of the most infamous fox spirits in Chinese mythology was Daji, who is portrayed in the Ming Dynasty shenmo novel Fengshen Yanyi. A beautiful daughter of a general, she was married forcibly to the cruel tyrant King Zhou of Shang. A nine-tailed fox spirit who served Nüwa, whom King Zhou had offended, entered into and possessed her body, expelling the true Daji's soul. The spirit, as Daji, and her new husband schemed cruelly and invented many devices of torture, such as forcing righteous officials to hug red-hot metal pillars. Because of such cruelties, many people, including King Zhou's own former generals, revolted and fought against the Shang dynasty. Finally, King Wen of Zhou, one of the vassals of Shang, founded a new dynasty named after his country. The fox spirit in Daji's body was later driven out by Jiang Ziya, the first Prime Minister of the Zhou dynasty, and her spirit condemned by Nüwa herself for excessive cruelty. Traditions Popular fox worship during the Tang dynasty has been mentioned in a text entitled Hu Shen (Fox gods): Since the beginning of the Tang, many commoners have worshiped fox spirits. They make offerings in their bedchambers to beg for their favor. The foxes share people's food and drink. They do not serve a single master. At the time there was a figure of speech saying, "Where there is no fox demon, no village can be established." In the Song dynasty, fox spirit cults, such as those dedicated to Daji, became outlawed, but their suppression was unsuccessful. For example, in 1111, an imperial edict was issued for the destruction of many spirit shrines within Kaifeng, including those of Daji. On the eve of the Jurchen invasion, a fox went to the throne of Emperor Huizong of Song. So Huizong ordered the destruction of all fox temples in Kaifeng. The city was invaded the next day, and the dynasty fell after five months. In late imperial China, during the Ming and Qing dynasties, disruptions in the domestic environment could be attributed to the mischief of fox spirits, which could throw or tear apart objects in a manner similar to a poltergeist. "Hauntings" by foxes were often regarded as both commonplace and essentially harmless, with one seventeenth-century author commenting that "Out of every ten houses in the capital, six or seven have fox demons, but they do no harm and people are used to them". Typically, fox spirits were seen as dangerous, but some of the stories in the Qing dynasty book Liaozhai Zhiyi by Pu Songling are love stories between a young boy and a fox appearing as a beautiful girl. In the fantasy novel The Three Sui Quash the Demons' Revolt, a huli jing teaches a young girl magic, enabling her to conjure armies with her spells. Belief in fox spirits has also been implicated as an explanatory factor in the incidence of attacks of koro, a culture-bound syndrome found in southern China and Malaysia in particular. There is mention of the fox spirit in Chinese Chán Buddhism, when Linji Yixuan compares them to voices that speak of the Dharma, stating "the immature young monks, not understanding this, believe in these fox-spirits..." Fox spirits were thought to be able to disguise themselves as women. In this guise, they seduced young men who were scholars or merely intelligent to absorb "life essence through their semen". This allowed them to actually turn into humans, then huxian, and then, after 1,000 years, a nine-tailed fox god which was able to navigate through higher realms of tiān. A handful of Huli jing also appear in Wu Cheng'en's late 16th-century novel, the Journey to the West: The fox cult survived in northern China in the 20th century, but was suppressed during the anti-superstition Socialist Education Campaign. In popular culture See also References Literature External links
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[SOURCE: https://en.wikipedia.org/wiki/URL#cite_note-rfc1630-17] \| [TOKENS: 957]
Contents URL A uniform resource locator (URL), colloquially known as web address, is a reference to a resource on the World Wide Web. A URL specifies the location of a resource on a computer network and a mechanism for retrieving it. A URL is a specific type of Uniform Resource Identifier (URI), although many people use the two terms interchangeably.[a] A URL is most commonly used to reference a web page (HTTP/HTTPS) but is also used for file transfer (FTP), email (mailto), database access (JDBC), and many other applications. Most web browsers display the URL of a web page above the page in an address bar. As an example of a web page URL, https://www.example.com/index.html indicates protocol https, hostname www.example.com, and file name index.html. History The Uniform Resource Locator was defined in RFC 1738 in 1994 by Tim Berners-Lee, the inventor of the World Wide Web, and the URI working group of the Internet Engineering Task Force (IETF), as an outcome of collaboration started at the IETF Living Documents birds of a feather session in 1992. The format combines the pre-existing system of domain names (created in 1985) with file path syntax, where slashes are used to separate directory and filenames. Conventions already existed where server names could be prefixed to complete file paths, preceded by a double slash (//). Berners-Lee later expressed regret at the use of dots to separate the parts of the domain name within URIs, wishing he had used slashes throughout, and also said that, given the colon following the first component of a URI, the two slashes before the domain name were unnecessary. Early WorldWideWeb collaborators, including Berners-Lee, originally proposed the use of UDIs: Universal Document Identifiers. An early (1993) draft of the HTML Specification referred to "Universal" Resource Locators. This was dropped some time between June 1994 and October 1994. In his book Weaving the Web, Berners-Lee emphasizes his preference for the original inclusion of "universal" in the expansion rather than the word "uniform", to which it was later changed, and he gives a brief account of the contention that led to the change. Syntax Every HTTP URL conforms to the syntax of a generic URI. The URI generic syntax consists of five components organized hierarchically in order of decreasing significance from left to right:: §3 A component is undefined if it has an associated delimiter and the delimiter does not appear in the URI; the scheme and path components are always defined.: §5.2.1 A component is empty if it has no characters; the scheme component is always non-empty.: §3 The authority component consists of subcomponents: This is represented in a syntax diagram as: The URI comprises: A web browser will usually dereference a URL by performing an HTTP request to the specified host, by default on port number 80. URLs using the https scheme require that requests and responses be made over a secure connection to the website. Internationalized URL Internet users are distributed throughout the world using a wide variety of languages and alphabets, and expect to be able to create URLs in their own local alphabets. An Internationalized Resource Identifier (IRI) is a form of URL that includes Unicode characters. All modern browsers support IRIs. The parts of the URL requiring special treatment for different alphabets are the domain name and path. The domain name in the IRI is known as an Internationalized Domain Name (IDN). Web and Internet software automatically convert the domain name into punycode usable by the Domain Name System; for example, the Chinese URL http://例子.卷筒纸 becomes http://xn--fsqu00a.xn--3lr804guic/. The xn-- indicates that the character was not originally ASCII. The URL path name can also be specified by the user in the local writing system. If not already encoded, it is converted to UTF-8, and any characters not part of the basic URL character set are escaped as hexadecimal using percent-encoding; for example, the Japanese URL http://example.com/引き割り.html becomes http://example.com/%E5%BC%95%E3%81%8D%E5%89%B2%E3%82%8A.html. The target computer decodes the address and displays the page. Protocol-relative URLs Protocol-relative links (PRL), also known as protocol-relative URLs (PRURL), are URLs that have no protocol specified. For example, //example.com will use the protocol of the current page, typically HTTP or HTTPS. See also Notes Citations References External links
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[SOURCE: https://en.wikipedia.org/wiki/Qalansawe] \| [TOKENS: 1373]
Contents Qalansawe Qalansawe or Qalansuwa (Arabic: قلنسوة, Hebrew: קלנסווה, lit. "turban") is an Arab city in the Central District of Israel. Part of the Triangle, in 2023 it had a population of 24,728. History During the Abbasid Revolution in 750, which toppled the Umayyad Caliphate, numerous members of the Umayyad dynasty were deported to Qalansawe from Egypt for execution, including descendants of caliphs Umar II (r. 717–720) and Sulayman ibn Abd al-Malik (r. 715–717). Yaqut, a 13th-century scholar, wrote that "many of the Omayyads were slain there." From the ninth century until the Crusader period, Qalansawe was a stop on the Cairo-Damascus road, between Lajjun and Ramla. During the Crusader period, the village was known as Calanson, Calansue, Calanzon or Kalensue. In 1128, it was given to the Hospitallers by the knight Godfrey of Flujeac. Yaqut (d. 1229) wrote that Qalansawe, Castle of the Plains, of the Crusaders, was a fortress near Ramle. Remnants of a crusader fortress remain today. It remained in Hospitallers hands (except for 1187–1191) until Baybars took it in 1265. However, during this period the lord of Caesarea appears to have retained overlordship. In 1265, after the Mamluks had defeated the Crusaders, Qalansawe was mentioned among the estates which Sultan Baibars granted his followers. It was divided equally between two of his emirs: Izz al-Din Aidamur al-Halabi al-Salihi and Shams al-Din Sunqur al-Rumi al-Salihi. In 1517, the village was included in the Ottoman Empire with the rest of Palestine. In the 1596 tax-records it appeared located in the Nahiya of Bani Sa'b of the Liwa of Nablus. It had a population of 29 Muslim households. They paid a fixed tax-rate of 33.3% on agricultural products, including wheat, barley, summer crops, olives, goats or beehives, and a press for olives or grapes; a total of 11,342 akçe. Pierre Jacotin called the village Qalensawi on his map from 1799. In 1870, the French explorer Victor Guérin found it to have 500 inhabitants. He then examined the remains of a church facing east and west, and divided into three naves, terminating to the east in three apses. It was constructed of cut stones, some of them slightly embossed. The naves were separated one from the other by monolithic columns and probably crowned by Corinthian capitals. One of them, of white marble, was repurposed by a villager who took it from the site of the church. The rest of the capitals and shafts were missing. An elegant door with a pointed arch was still standing. Under the nave ran a vaulted crypt, now divided into several compartments, which served as a shelter for several families. Ancient walls were found near the church and below the village. One was surmounted by a vaulted arcade in cut stones. In the 1860s, the Ottoman authorities granted the village an agricultural plot of land called Ghabat Umm Ulayqa, or Ghabat Qalansuwa, in the former confines of the Forest of Arsur (Ar. Al-Ghaba) in the coastal plain, west of the village. In 1882, the Palestine Exploration Fund's Survey of Western Palestine described it as being of moderate size, and the seat of a Caimacam. In the centre of the village was a Crusader tower and hall, surrounded by the village houses, mostly made of adobe. Wells and a spring to the west supplied water. In the 1922 census of Palestine conducted by the British Mandate authorities, Qualansawe had a population of 871 Muslims, increasing in the 1931 census to 1069, still all Muslim, in a total of 225 houses. By the 1945 statistics, the village had 1540 Muslim inhabitants, who owned a total of owned 17,249 dunams of land. 473 dunams were for citrus and bananas, 759 plantations and irrigable land, 15,936 for cereals, while 47 dunams were built-up (urban) land. During the 1948 Palestine war, Jewish forces had planned to attack Qalansawe but the plan was not carried out. Qalansawe came under Israeli sovereignty in May 1949 as part of the Israel-Jordan armistice agreement. Political considerations then prevented the expulsion of the villagers. In 1955 the village achieved local council status. In 1957 it was connected to running water. By 1962, land ownership had dropped to 6,620 dunams, mostly due to expropriation of land by the Israeli government in 1953–1954. In 2000 Qalansawe was declared a city. In January 2017, the Israeli government demolished 11 buildings built by 4 families, on the grounds that they were built without permits. The families claimed they were given two days notice, which was insufficient for a legal response. The mayor of Qalansawe, announcing his resignation, said that he had fought for years to widen the town's urban building plan without success, which is why the residents built on agricultural land. Thousands of people rallied in support of the village and a one-day strike was called. Demographics In 2001, the ethnic makeup of the city was virtually all Arab Muslims without significant Jewish population. There were 7,700 males and 7,300 females. 53.2% of the residents were 19 years of age or younger, 17.1% were between 20 and 29, 17.9% between 30 and 44, 8.0% from 45 to 59, 1.6% from 60 to 64, and 2.2% 65 years of age or older. The population growth rate in 2001 was 3.5%. See also References Bibliography External links
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[SOURCE: https://en.wikipedia.org/wiki/Ori_and_the_Blind_Forest] \| [TOKENS: 3053]
Contents Ori and the Blind Forest Ori and the Blind Forest is a platform-adventure Metroidvania video game developed by Moon Studios and published by Microsoft Studios. The game was released for Windows and Xbox One in March 2015, and for Nintendo Switch in September 2019. Players assume control of Ori, a small white spirit, and Sein, the "light and eyes" of the Forest's Spirit Tree. Players are tasked to move between platforms and solve puzzles. The game features a save system called "Soul Links", which allows players to save their progress at will with limited resources, and an upgrade system that allows players to strengthen Ori's skills and abilities. The game was developed by Moon Studios, a collective organization without a set location. The distribution rights to the game were acquired by Microsoft a year after the beginning of the game's development. The game story was inspired by The Lion King and The Iron Giant, while some of the gameplay elements were inspired by the Rayman and Metroid franchises. Upon release, the game received critical acclaim, with players praising the gameplay, art direction, story, action sequences, musical score, and environmental design. The game was also named as a title that represented art in video games. Moon Studios co-founder Gennadiy Korol said the game was profitable for the company within a few weeks after its initial launch. An expansion, called the Definitive Edition, was released in March 2016. A direct sequel, Ori and the Will of the Wisps, was announced during Electronic Entertainment Expo 2017 and was released on March 11, 2020. Gameplay Ori and the Blind Forest is a 2D Metroidvania; a platform game with an emphasis on exploration, collecting items and upgrades, and backtracking to previously inaccessible areas. The player controls Ori, a white guardian spirit, and Sein, who is the light and eyes of the Spirit Tree. As Ori, players must jump, climb, and use various other abilities to navigate the game's world. Sein can shoot Spirit Flames to combat enemies or break obstacles. Ori is required to interact with the environment by jumping from platforms and solving puzzles, and is faced with various enemies. The player helps Ori collect health cells, energy cells, new abilities, and upgrades. The game world unfolds to the player in the fashion of a Metroidvania, with new abilities allowing the player to access previously inaccessible areas. In addition to scripted save points scattered in the game, players can create "soul links" at any time they choose to serve as checkpoints. However, soul links can only be created using energy cells collected during gameplay; the needed energy is not in abundant supply, forcing players to create them only when necessary. The player can obtain ability points to gain upgrades and benefits, such as increasing the damage of Sein's Spirit Flame. These upgrades can be achieved when the player has enough ability points to learn the skill they desire, anywhere a soul link has been created. An ability point is gained when Ori collects enough experience by killing enemies, destroying various plants, and finding spirit light containers or ability cells (which instantly awards Ori an ability point). Each skill must be learned in sequential order from one of three ability trees to allow the next skill to be accessible. Ori can learn new abilities such as wall jumping, and double jumping. Plot The voice of the Spirit Tree in the forest of Nibel narrates the story of when Ori, a guardian spirit, fell from it during a storm as a newborn and was adopted by a creature named Naru, who raised Ori as her own. A cataclysmic event soon makes the forest wither, and Naru dies of starvation. Newly orphaned, Ori is left to explore the forest on their own. After collapsing near the Spirit Tree and being revived by it, Ori later meets Sein, a small orb who guides Ori on a journey to restore the forest. Sein tasks Ori with recovering the light of three main elements supporting the balance of Nibel: Waters, Winds, and Warmth. Ori and Sein come across two beings in their quest: Gumo, the last survivor of the spider-like Gumon clan, who were wiped out by the forest's cataclysm, and whose home supports the Wind element; and Kuro, a giant, shadowy owl who is hostile toward Ori. Gumo initially steals the key to the Water element, but he returns it after Ori saves him from a rockslide. After the Wind element is rekindled, Ori and Sein find Kuro's nest, empty except for a single egg, and they learn the source of her wrath and the forest's cataclysm: when Ori was lost, the Spirit Tree released a flash of light to look for them, which burned and killed all of Kuro's recently hatched offspring when she was away from her nest looking for food. Determined to prevent this from happening to her yet unborn child, Kuro took away the core on top of the Spirit Tree, which is actually Sein. Without its core, the Spirit Tree could not sustain the three elements, and Nibel lost its balance. Meanwhile, Gumo overhears Ori and Sein's intentions to restore Nibel and uses his clan treasure that stores the light from the Spirit Tree to revive Naru, taking her to where Ori is. After the final element, Warmth, is restored in the volcano Mount Horu, Kuro attacks Ori and Sein as the fire from Horu spreads. Naru, who had been separated from Gumo, arrives to protect Ori from Kuro. Kuro softens, remembering the pain of losing her children. As the fire spreads and is about to reach her remaining egg, Kuro takes Sein back to the Spirit Tree, which emits a flash of bright light that dissipates the fire and restores the forest, but Kuro is destroyed by the light. Time passes as the forest begins to flourish once more, and Ori watches new spirits being born in the field at the foot of the Spirit Tree. Gumo and Naru watch together from afar, before the latter goes home, where Kuro's last egg now rests, just in time to see it begin to hatch. Development Ori and the Blind Forest was developed by Moon Studios, a worldwide collaboration of designers and programmers who had been working on the game for four years before it was released, with Microsoft acquiring the game about a year after development started. One of the lead team members is Thomas Mahler, an artist formerly working with Blizzard Entertainment. According to Microsoft producer Daniel Smith, Moon Studios is not located in any one location, but instead, staffers are working from around the world, including Austria, Australia, Israel, and the United States. Gameplay programmer David Clark described the team as being inspired by current and classic adventure games, notably the Rayman and Metroid franchises, and that Ori is intended as a "love letter" to those games. The designers say they were guided by works such as The Lion King and The Iron Giant and that it is a "coming-of-age story". The designers were heavily influenced by the work of Hayao Miyazaki, particularly with one of the levels "Valley of the Wind", being a nod to Nausicaä of the Valley of the Wind. The art style is meant to appear hand-drawn, similar to the more recent Rayman titles that utilize Ubisoft's UbiArt graphics engine; the game instead uses the Unity engine. The game takes place in one large map, rendered at 1080p and 60 frames per second with no visible loading time as the player explores. According to Mahler, the game's backgrounds are all individual components, with none duplicated as in other similar titles. As an example, Mahler explained, "You see this tree in the background and this mushroom and this rock? That's the one and only place you'll ever see those assets." The game was unveiled at E3 2014 during Microsoft's pre-show press conference at the Galen Center; E3 was the first time a number of Moon Studios employees actually met face-to-face. Microsoft's Yusuf Mehdi, in charge of marketing for Xbox One, stated that they considered opening the conference with Ori, but instead chose Call of Duty: Advanced Warfare. During E3, attendees waited in long lines to play a demo version of the game, often waiting in queues 7-8 people deep for each of the four consoles featuring the game. Sometime after E3, Moon Studios announced on the game website that an Xbox 360 version of Ori and the Blind Forest was in development and planned for release sometime in early 2015. In November 2014, Moon Studios updated the status of the game and announced plans to push back the launch of the title into "early 2015" for Xbox One and PC, but no further mention of the Xbox 360 version was made at the time. Asked to clarify the status of the Xbox 360 edition, Moon Studios confirmed it was still in development and would be released later in 2015. As of January 2018[update], there has been no further announcement on the status of the Xbox 360 release and has been considered cancelled. Ori and the Blind Forest: Definitive Edition was announced at Gamescom 2015. The expansion contains new areas, mechanics, and artwork. Specifically, it adds in "easy" and "hard" difficulty levels, which alter health and damage inflicted by enemies, and "One Life" mode; it enables fast travel between spirit wells to help traverse the game's world and it enables full backtracking through the map. This version was released on March 11, 2016 for Xbox One, on the one-year anniversary of the game, while the Windows version was released shortly afterwards on April 27, 2016. Those who have already purchased the original game are able to upgrade to the Definitive Edition. In May 2016, Nordic Games announced that they had partnered with Moon Studios and Microsoft to release a retail version of the Definitive Edition for Windows. It was released on June 14, 2016. Following from Microsoft's working relationship with Nintendo after the release of Minecraft and Cuphead for the Nintendo Switch and the Banjo-Kazooie series receiving representation in the Switch crossover title Super Smash Bros. Ultimate, The Definitive Edition for Nintendo Switch was announced during Nintendo's Indie World showcase and was released on September 27, 2019. Reception Ori and the Blind Forest received "universal acclaim" for the Nintendo Switch version and "generally favourable reviews" for the Windows and Xbox One versions, according to video game review aggregator website Metacritic. Praise was directed to the game's story, visuals, gameplay, music, exploration, and environmental design. Writing for Game Informer, Andrew Reiner gave the game a 9.5/10, praising numerous aspects of the game, but stated that the combat system in the game was not as refined as the platforming. He named the game "one of the best games of the year" and claimed that "there isn't a bad moment in Ori and the Blind Forest". Chris Carter from Destructoid also gave the game a 9.5/10, praising its narrative, upgrades, and visuals, which he compared to the Rayman series but that "[Ori] easily surpasses them in quality." He also praised the game for allowing players to set their own checkpoints anytime. He summarized the review by saying that "it succeeds in being both a great introduction to the genre and a rewarding experience for the hardcore audience" and called the game "a new classic" as a Metroidvania. Ray Carsillo from Electronic Gaming Monthly praised the variety of environments, art style, story, and the quick save system, and further complimented the emphasis on platforming, puzzle-solving, and exploration instead of combat as it allowed players to fully appreciate the level design. However, he criticized the occasional frame rate drops as well as the game for not enabling players to re-enter certain areas after completing their quests (an issue addressed in the Definitive Edition). He stated that the game "is polished enough to rarely break the immersion it inspires. It's one of my favorite titles of 2015 so far and an unforgettable debut for indie developer Moon Studios." Kevin VanOrd from GameSpot gave the game a 9/10, praising its visuals, level design, gameplay challenges, and storytelling, which he compared to Ōkami and Panzer Dragoon Orta and having "among the best story sequences of any game." However, he criticized the levels as occasionally frustrating. Lucas Sullivan from GamesRadar gave the game a score of 8/10, praising its animations, atmosphere, music, and gameplay, which he stated "has conveyed a real sense of lightweight agility". However, he criticized the save system, which he felt lead to constant death, and had difficulty spikes during the escape sequences. He summarized the game by saying that "Completing Ori's six-to-nine-hour journey will certainly leave you feeling warm, fuzzy, and accomplished – just be ready to dig in for some particularly trying segments." Nick Tan from Game Revolution gave the game a 4/5, praising its presentation and platforming, but criticizing its short length and low replay value, also believing the game was "needlessly punishing" in the escape sequences. The game has been considered an example of video games becoming closer to art. For example, Chris Melissinos commented that the video game audience was not used to seeing the "dreamlike sensitivity" of its style of art, "usually reserved for high profile animated films". According to Moon Studios' Thomas Mahler, Ori and the Blind Forest became profitable for Microsoft within one week of the game's launch on Xbox One and PC; and Gennadiy Korol, co-founder of Moon Studios, said the game was profitable for the studio itself within "a couple of weeks." Mahler described Microsoft as being "super-happy" with Ori and hinted that the franchise may see a future installment, eventually leading to Ori and the Will of the Wisps. He stated that the Xbox 360 version of the game was still in development and was at the time expected to launch later in the spring (Q2) of 2015. Although no official statement has confirmed it, the Xbox 360 version has been cancelled and was never released. Legacy The main characters, Ori and Sein, were announced as a playable fighter in the independent fighting game Rivals of Aether on June 12, 2017 and were released in Q2 2017. A direct sequel, Ori and the Will of the Wisps, was announced during E3 2017 and shown again during E3 2018, Gamescom 2018, E3 2019 and The Game Awards 2019. It was released on March 11, 2020. Notes References External links
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[SOURCE: https://en.wikipedia.org/wiki/United_Torah_Judaism] \| [TOKENS: 1611]
Contents United Torah Judaism United Torah Judaism (Hebrew: יהדות התורה, Yahadut HaTorah) is a Haredi, religious conservative political alliance in Israel. The alliance, consisting of Agudat Yisrael and Degel HaTorah, was first formed in 1992, in order to maximize Ashkenazi Haredi representation in the Knesset. Despite the alliance splitting in 2004 over rabbinical differences, the parties reconciled in 2006, in order to prevent vote splitting. In April 2019, the party achieved its highest number of seats ever, receiving eight seats. Unlike similar religiously-oriented parties in Israel, like Shas, the National Religious Party–Religious Zionism, Otzma Yehudit, and Noam, UTJ is non-Zionist. Unlike some other Haredim, the party is notable for its usage of technology and electronic communication. History Before the establishment of Degel HaTorah and the formation of United Torah Judaism, the two factions were united under one united Agudat Yisrael party, but the late mentor and supreme guide of the non-Hasidic group, Rabbi Elazar Shach, broke away from Agudat Yisrael when he concluded that the party was not representing enough the political interests of the Lithuanian Haredim. At that point, he split from them, and created the Degel HaTorah party for the "Lithuanian" Haredi Jews (also known as "Mitnagdim" by some). He chose the name Degel HaTorah, meaning "Flag of The Torah", to be a contrast to the well-known flag of Israel and its connection with the secular-dominated State of Israel (an "anti-Torah" entity, in his opinion). Rabbi Shach was known as an outspoken critic of the secular Israeli way of life. The UTJ party also had considerable influence on the Israeli Sephardi Jews' Shas party. In fact, the Shas party was founded by Rabbi Shach at an earlier juncture when he was previously also frustrated with the policies of the Hasidic rebbes; so, he turned to the Sephardic Jews, and urged his own Ashkenazi followers at that time, to vote for the new Shas party, which they did in record numbers. Later, Shas broke with Rabbi Shach, as it adopted its own independent political stance under Rabbi Ovadia Yosef. Yet, Shas generally goes in the same direction, as it has similar values, needs and interests within the state. Haaretz cited that some women activists have protested the fact that UTJ, along with other Haredi parties, refuses to run female candidates for office. UTJ responded that they have the right to follow the Jewish laws of modesty, which separates roles of men and women, and maintain that they do not deny women the right to vote for any other Knesset parties of their choice. They add that Haredi women will not vote for them if they elect women. In January 2004, the party split back into its two factions following a disagreement over how to join Ariel Sharon's coalition, which had been negotiated by Rabbi Yosef Shalom Eliashiv. Rabbi Eliashiv wanted the five MKs to have a three-month "waiting period" before accepting jobs in the government. Rabbi Yaakov Aryeh Alter, the Gerrer rebbe, however, thought that all Agudat members should accept positions immediately. The Agudat MKs argued that they should be entitled to follow their own rabbis' ruling, while their Degel HaTorah counterparts accused them of disrespecting Rabbi Eliashiv. The Agudat faction proceeded to follow the rebbe of Gur's instructions, with MK Yaakov Litzman accepting the position as chairman of the Knesset Finance Committee. This infuriated Degel HaTorah and its leaders, and in response, they left the party, dissolving a twelve-year-old partnership. In December 2005, there was a meeting between representatives of the two factions, presumably to smooth over the ill-feelings of the previous year and to attempt to re-group before the March 2006 elections. A number of issues were worked out, such as Degel HaTorah's insistence on the joint list being equally divided between the two parties. (In the past, Agudat Israel has received more votes than Degel HaTorah.) Degel HaTorah has re-organized itself. It has a fully equipped modern party office on Hamabit Street 10 in Jerusalem's Geula neighborhood. It conducted a party convention, its first in 15 years, in December 2005. In early February 2006, Agudat Israel and Degel HaTorah agreed to run together as United Torah Judaism, despite the fact that the contentious "sixth seat" issue remained undecided. The two groups finally compromised by proposing dividing the sixth seat between two representatives on a rotating schedule (as was done in the last Knesset between the Belz and Vizhnitz communities for the fifth seat). This solution seemed to mollify the respective groups, and paved the way for the re-establishment of a joint list for the 2006 elections, although the Belz court was reportedly irked that once again, it was being asked to sacrifice part of its representation. UTJ MKs told reporters that any decision to join future government coalitions will be dependent on achieving two "central posts" to be split between Agudah and Degel. Similarly, in order to avoid the problems that led to the 2004 split, disagreements about joining a coalition will not be determined by a majority vote of MKs, but rather taken to the party's rabbinic leaders. Various media interviews with the party's Knesset members confirmed that it would strongly consider joining a coalition with the Ehud Olmert-led Kadima party, should it be offered to them after the elections. In March 2006, the rabbinical leaders of UTJ, including Rabbi Yosef Shalom Eliashiv, issued public declarations urging the Haredi public to vote for the party's list. In the election, the party increased its mandate by one, to six seats. Ideology Defunct UTJ wants to maintain the "status quo" relationship in regard to religion-and-state issues. The party has no uniform opinion on the issue of increasing settlements in the West Bank. Structure and constituency UTJ has always been a coalition of two individual parties, choosing to take advantage of Israeli election law in order to maximize the number of seats it can gain in the Knesset (and thus maximize its influence): The Agudat Yisrael faction takes its directions from the Hasidic rebbes of Ger (Rabbi Yaakov Aryeh Alter), Vizhnitz (Rabbi Yisroel Hager), and Belz (Rabbi Yissachar Dov Rokeach). Policy decisions are also weighed and decided by a Moetzes Gedolei HaTorah ("Council of Torah Sages"), a council of communal rabbis, made up of mostly senior and elderly rebbes. Degel HaTorah's pre-eminent sages are Rabbi Dov Landau and Rabbi Moshe Hillel Hirsch, of Bnei Brak. Policy decisions are also weighed and decided by their own "Moetzes" (Council) of experienced communal rabbis, made up of mostly senior and elderly rosh yeshivas. There is no word from the party on the process of succession as leader, and it usually unofficially announced in their daily newspaper "Yated Neeman". Election results Knesset members See also References External links
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[SOURCE: https://en.wikipedia.org/wiki/Strafgesetzbuch_section_86a] \| [TOKENS: 1533]
Contents Strafgesetzbuch section 86a The German Strafgesetzbuch (StGB; English: Criminal Code) in section § 86a outlaws use of symbols of "unconstitutional organizations" and terrorism outside the contexts of "art or science, research or teaching". The law does not name the individual symbols to be outlawed, and there is no official exhaustive list. However, the law has primarily been used to suppress fascist, Nazi, communist, extremist and Russian militarist symbols. The law, adopted during the Cold War, most notably affected the Communist Party of Germany, which was banned as unconstitutional in 1956; the Socialist Reich Party, which was banned in 1952; and several small far-right parties. The law prohibits the distribution or public use of symbols of unconstitutional groups—in particular, flags, insignia, uniforms, slogans and forms of greeting. Text The relevant excerpt of the German criminal code reads: § 86 StGB Dissemination of Means of Propaganda of Unconstitutional Organizations § 86a StGB Use of Symbols of Unconstitutional Organizations Symbols affected The text of the law does not name the individual symbols to be outlawed, and there is no official exhaustive list. A symbol may be a flag, emblem, uniform, or a motto or greeting formula. The prohibition is not tied to the symbol itself but to its use in a context suggestive of association with outlawed organizations. Thus, the Swastika is outlawed if used in a context of völkisch ideology — while it is legitimate if used as a symbol of religious faith — particularly any South, South Eastern or East Asian religions. Similarly, the Wolfsangel is outlawed if used in the context of the Junge Front but not in other contexts such as heraldry, or as the emblem of "landscape poet" Hermann Löns.[citation needed] Because of the law, German Neo-Nazis took to displaying modified symbols similar but not identical with those outlawed. In 1994, such symbols were declared equivalent to the ones they imitate (Verbrechensbekämpfungsgesetz § 2). As a result of the ban on Nazi symbols, German Neo-Nazis have used older symbols such as the black-white-red German Imperial flag (which was also briefly used by the Nazis alongside the party flag as one of two official flags of Nazi Germany from 1933 until 1935) as well as variants of this flag such as the one with the Eiserne Kreuz and the Reichsdienstflagge variants, the Imperial-era Reichskriegsflagge, the Schwarze Sonne and the flag of the Strasserite Black Front – a splinter Nazi organization – as alternatives.[citation needed] They have also used the American Confederate battle flag, due to its association with racism and white supremacy. Affected by the law according to Federal Constitutional Court of Germany rulings are: Symbols known to fall under the law are: Illustration of the emblems mentioned in the list above: Anti-fascist symbols In 2005, controversy arose about whether the paragraph should be taken to apply to the display of crossed-out swastikas as a symbol of anti-fascism. In late 2005 police raided the offices of the punk rock label and mail order store "Nix Gut Records" and confiscated merchandise depicting crossed-out swastikas and fists smashing swastikas. In 2006, the Stade police department started an inquiry against anti-fascist youths using a placard depicting a person dumping a swastika into a trashcan. The placard was displayed in opposition to the campaign of right-wing nationalist parties for local elections. On Friday, 17 March 2006, a member of the Bundestag, Claudia Roth, reported herself to the German police for displaying a crossed-out swastika in multiple demonstrations against Neo-Nazis and got the Bundestag to suspend her immunity from prosecution. She intended to show the absurdity of charging anti-fascists with using fascist symbols: "We don't need prosecution of non-violent young people engaging against right-wing extremism." On 15 March 2007, the Federal Court of Justice of Germany (Bundesgerichtshof) reversed the charge and held that the crossed-out symbols were "clearly directed against a revival of national-socialist endeavors", which thereby settled the dispute for the future. Application to forms of media Section 86a includes a social adequacy clause that allows the use of the symbols that fall within it for the purposes of "art or science, research or teaching". This generally allows these symbols to be used in literature, television shows (as with the 1968 Star Trek episode, "Patterns of Force", itself allowed after 1995), films, and other works of art without censoring or modification and stay within the allowance for the clause. For example, German cinemas were allowed to screen Raiders of the Lost Ark and Inglourious Basterds, films which feature frequent displays of Nazi symbols, without censorship. Up until 2018, video games were not included in the social adequacy clause. A High District Frankfurt Court ruling in 1998 over the video game Wolfenstein 3D determined that because video games do attract young players, "this could lead to them growing up with these symbols and insignias and thereby becoming used to them, which again could make them more vulnerable for ideological manipulation by national socialist ideas". Since this ruling, the Unterhaltungssoftware Selbstkontrolle (USK), the German content ratings board, would refuse to rate any game that includes symbols under Section 86a, effectively banning them from retail sales within Germany. This led to software developers and publishers to either avoid publication in Germany, or create alternative, non-offending symbols to replace them, such as in Wolfenstein II: The New Colossus, where the developer had to replace the game's representation of Adolf Hitler with a version without the moustache and named "Chancellor Heiler". In August 2018, the German government reversed this ruling as a result of a ruling from April 2018. The web-based game Bundesfighter II Turbo was released prior to the September 2017 elections, which included parodies of the candidates fighting each other; this included Alexander Gauland, who had a special move that involved swastika imagery. When this was noticed by public authorities, they began prosecution of the game in December 2017, submitting it to the Public Prosecutor General's office for review based on the Wolfenstein 3D decision. The Attorney General declined to consider the game illegal under Section 86a, stating that the 1998 ruling was outdated; since then, USK had adopted age ratings for video games, and that there was no reason not to consider video games as art within the social adequacy clause. As a result, the Federal Department for Media Harmful to Young Persons adapted the Attorney General's ruling to be applicable for all video games within Germany, and subsequently the USK announced this change in August 2018; USK will still review all games to judge whether the use of imagery under Section 86a remains within the social adequacy clause and deny ratings to those that fail to meet this allowance. In August 2020, Through the Darkest of Times, in which players follow an anti-Nazi resistance group, became the first game permitted by USK to depict swastikas. Notes See also References External links
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[SOURCE: https://en.wikipedia.org/wiki/Weaving_the_Web] \| [TOKENS: 98]
Contents Weaving the Web Weaving the Web: The Original Design and Ultimate Destiny of the World Wide Web by its inventor (1999) is a book written by Tim Berners-Lee describing how the World Wide Web was created and his role in it. References External links This article about a computer book or series of books is a stub. You can help Wikipedia by adding missing information. This World Wide Web–related article is a stub. You can help Wikipedia by adding missing information.
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[SOURCE: https://en.wikipedia.org/wiki/Black_hole#cite_note-HeuslerNoHair-38] \| [TOKENS: 13839]
Contents Black hole A black hole is an astronomical body so compact that its gravity prevents anything, including light, from escaping. Albert Einstein's theory of general relativity predicts that a sufficiently compact mass will form a black hole. The boundary of no escape is called the event horizon. In general relativity, a black hole's event horizon seals an object's fate but produces no locally detectable change when crossed. General relativity also predicts that every black hole should have a central singularity, where the curvature of spacetime is infinite. In many ways, a black hole acts like an ideal black body, as it reflects no light. Quantum field theory in curved spacetime predicts that event horizons emit Hawking radiation, with the same spectrum as a black body of a temperature inversely proportional to its mass. This temperature is of the order of billionths of a kelvin for stellar black holes, making it essentially impossible to observe directly. Objects whose gravitational fields are too strong for light to escape were first considered in the 18th century by John Michell and Pierre-Simon Laplace. In 1916, Karl Schwarzschild found the first modern solution of general relativity that would characterise a black hole. Due to his influential research, the Schwarzschild metric is named after him. David Finkelstein, in 1958, first interpreted Schwarzschild's model as a region of space from which nothing can escape. Black holes were long considered a mathematical curiosity; it was not until the 1960s that theoretical work showed they were a generic prediction of general relativity. The first black hole known was Cygnus X-1, identified by several researchers independently in 1971. Black holes typically form when massive stars collapse at the end of their life cycle. After a black hole has formed, it can grow by absorbing mass from its surroundings. Supermassive black holes of millions of solar masses may form by absorbing other stars and merging with other black holes, or via direct collapse of gas clouds. There is consensus that supermassive black holes exist in the centres of most galaxies. The presence of a black hole can be inferred through its interaction with other matter and with electromagnetic radiation such as visible light. Matter falling toward a black hole can form an accretion disk of infalling plasma, heated by friction and emitting light. In extreme cases, this creates a quasar, some of the brightest objects in the universe. Merging black holes can also be detected by observation of the gravitational waves they emit. If other stars are orbiting a black hole, their orbits can be used to determine the black hole's mass and location. Such observations can be used to exclude possible alternatives such as neutron stars. In this way, astronomers have identified numerous stellar black hole candidates in binary systems and established that the radio source known as Sagittarius A, at the core of the Milky Way galaxy, contains a supermassive black hole of about 4.3 million solar masses. History The idea of a body so massive that even light could not escape was first proposed in the late 18th century by English astronomer and clergyman John Michell and independently by French scientist Pierre-Simon Laplace. Both scholars proposed very large stars in contrast to the modern concept of an extremely dense object. Michell's idea, in a short part of a letter published in 1784, calculated that a star with the same density but 500 times the radius of the sun would not let any emitted light escape; the surface escape velocity would exceed the speed of light.: 122 Michell correctly hypothesized that such supermassive but non-radiating bodies might be detectable through their gravitational effects on nearby visible bodies. In 1796, Laplace mentioned that a star could be invisible if it were sufficiently large while speculating on the origin of the Solar System in his book Exposition du Système du Monde. Franz Xaver von Zach asked Laplace for a mathematical analysis, which Laplace provided and published in a journal edited by von Zach. In 1905, Albert Einstein showed that the laws of electromagnetism would be invariant under a Lorentz transformation: they would be identical for observers travelling at different velocities relative to each other. This discovery became known as the principle of special relativity. Although the laws of mechanics had already been shown to be invariant, gravity remained yet to be included.: 19 In 1907, Einstein published a paper proposing his equivalence principle, the hypothesis that inertial mass and gravitational mass have a common cause. Using the principle, Einstein predicted the redshift and half of the lensing effect of gravity on light; the full prediction of gravitational lensing required development of general relativity.: 19 By 1915, Einstein refined these ideas into his general theory of relativity, which explained how matter affects spacetime, which in turn affects the motion of other matter. This formed the basis for black hole physics. Only a few months after Einstein published the field equations describing general relativity, astrophysicist Karl Schwarzschild set out to apply the idea to stars. He assumed spherical symmetry with no spin and found a solution to Einstein's equations.: 124 A few months after Schwarzschild, Johannes Droste, a student of Hendrik Lorentz, independently gave the same solution. At a certain radius from the center of the mass, the Schwarzschild solution became singular, meaning that some of the terms in the Einstein equations became infinite. The nature of this radius, which later became known as the Schwarzschild radius, was not understood at the time. Many physicists of the early 20th century were skeptical of the existence of black holes. In a 1926 popular science book, Arthur Eddington critiqued the idea of a star with mass compressed to its Schwarzschild radius as a flaw in the then-poorly-understood theory of general relativity.: 134 In 1939, Einstein himself used his theory of general relativity in an attempt to prove that black holes were impossible. His work relied on increasing pressure or increasing centrifugal force balancing the force of gravity so that the object would not collapse beyond its Schwarzschild radius. He missed the possibility that implosion would drive the system below this critical value.: 135 By the 1920s, astronomers had classified a number of white dwarf stars as too cool and dense to be explained by the gradual cooling of ordinary stars. In 1926, Ralph Fowler showed that quantum-mechanical degeneracy pressure was larger than thermal pressure at these densities.: 145 In 1931, Subrahmanyan Chandrasekhar calculated that a non-rotating body of electron-degenerate matter below a certain limiting mass is stable, and by 1934 he showed that this explained the catalog of white dwarf stars.: 151 When Chandrasekhar announced his results, Eddington pointed out that stars above this limit would radiate until they were sufficiently dense to prevent light from exiting, a conclusion he considered absurd. Eddington and, later, Lev Landau argued that some yet unknown mechanism would stop the collapse. In the 1930s, Fritz Zwicky and Walter Baade studied stellar novae, focusing on exceptionally bright ones they called supernovae. Zwicky promoted the idea that supernovae produced stars with the density of atomic nuclei—neutron stars—but this idea was largely ignored.: 171 In 1939, based on Chandrasekhar's reasoning, J. Robert Oppenheimer and George Volkoff predicted that neutron stars below a certain mass limit, later called the Tolman–Oppenheimer–Volkoff limit, would be stable due to neutron degeneracy pressure. Above that limit, they reasoned that either their model would not apply or that gravitational contraction would not stop.: 380 John Archibald Wheeler and two of his students resolved questions about the model behind the Tolman–Oppenheimer–Volkoff (TOV) limit. Harrison and Wheeler developed the equations of state relating density to pressure for cold matter all the way through electron degeneracy and neutron degeneracy. Masami Wakano and Wheeler then used the equations to compute the equilibrium curve for stars, relating mass to circumference. They found no additional features that would invalidate the TOV limit. This meant that the only thing that could prevent black holes from forming was a dynamic process ejecting sufficient mass from a star as it cooled.: 205 The modern concept of black holes was formulated by Robert Oppenheimer and his student Hartland Snyder in 1939.: 80 In the paper, Oppenheimer and Snyder solved Einstein's equations of general relativity for an idealized imploding star, in a model later called the Oppenheimer–Snyder model, then described the results from far outside the star. The implosion starts as one might expect: the star material rapidly collapses inward. However, as the density of the star increases, gravitational time dilation increases and the collapse, viewed from afar, seems to slow down further and further until the star reaches its Schwarzschild radius, where it appears frozen in time.: 217 In 1958, David Finkelstein identified the Schwarzschild surface as an event horizon, calling it "a perfect unidirectional membrane: causal influences can cross it in only one direction". In this sense, events that occur inside of the black hole cannot affect events that occur outside of the black hole. Finkelstein created a new reference frame to include the point of view of infalling observers.: 103 Finkelstein's new frame of reference allowed events at the surface of an imploding star to be related to events far away. By 1962 the two points of view were reconciled, convincing many skeptics that implosion into a black hole made physical sense.: 226 The era from the mid-1960s to the mid-1970s was the "golden age of black hole research", when general relativity and black holes became mainstream subjects of research.: 258 In this period, more general black hole solutions were found. In 1963, Roy Kerr found the exact solution for a rotating black hole. Two years later, Ezra Newman found the cylindrically symmetric solution for a black hole that is both rotating and electrically charged. In 1967, Werner Israel found that the Schwarzschild solution was the only possible solution for a nonspinning, uncharged black hole, meaning that a Schwarzschild black hole would be defined by its mass alone. Similar identities were later found for Reissner-Nordstrom and Kerr black holes, defined only by their mass and their charge or spin respectively. Together, these findings became known as the no-hair theorem, which states that a stationary black hole is completely described by the three parameters of the Kerr–Newman metric: mass, angular momentum, and electric charge. At first, it was suspected that the strange mathematical singularities found in each of the black hole solutions only appeared due to the assumption that a black hole would be perfectly spherically symmetric, and therefore the singularities would not appear in generic situations where black holes would not necessarily be symmetric. This view was held in particular by Vladimir Belinski, Isaak Khalatnikov, and Evgeny Lifshitz, who tried to prove that no singularities appear in generic solutions, although they would later reverse their positions. However, in 1965, Roger Penrose proved that general relativity without quantum mechanics requires that singularities appear in all black holes. Astronomical observations also made great strides during this era. In 1967, Antony Hewish and Jocelyn Bell Burnell discovered pulsars and by 1969, these were shown to be rapidly rotating neutron stars. Until that time, neutron stars, like black holes, were regarded as just theoretical curiosities, but the discovery of pulsars showed their physical relevance and spurred a further interest in all types of compact objects that might be formed by gravitational collapse. Based on observations in Greenwich and Toronto in the early 1970s, Cygnus X-1, a galactic X-ray source discovered in 1964, became the first astronomical object commonly accepted to be a black hole. Work by James Bardeen, Jacob Bekenstein, Carter, and Hawking in the early 1970s led to the formulation of black hole thermodynamics. These laws describe the behaviour of a black hole in close analogy to the laws of thermodynamics by relating mass to energy, area to entropy, and surface gravity to temperature. The analogy was completed: 442 when Hawking, in 1974, showed that quantum field theory implies that black holes should radiate like a black body with a temperature proportional to the surface gravity of the black hole, predicting the effect now known as Hawking radiation. While Cygnus X-1, a stellar-mass black hole, was generally accepted by the scientific community as a black hole by the end of 1973, it would be decades before a supermassive black hole would gain the same broad recognition. Although, as early as the 1960s, physicists such as Donald Lynden-Bell and Martin Rees had suggested that powerful quasars in the center of galaxies were powered by accreting supermassive black holes, little observational proof existed at the time. However, the Hubble Space Telescope, launched decades later, found that supermassive black holes were not only present in these active galactic nuclei, but that supermassive black holes in the center of galaxies were ubiquitous: Almost every galaxy had a supermassive black hole at its center, many of which were quiescent. In 1999, David Merritt proposed the M–sigma relation, which related the dispersion of the velocity of matter in the center bulge of a galaxy to the mass of the supermassive black hole at its core. Subsequent studies confirmed this correlation. Around the same time, based on telescope observations of the velocities of stars at the center of the Milky Way galaxy, independent work groups led by Andrea Ghez and Reinhard Genzel concluded that the compact radio source in the center of the galaxy, Sagittarius A, was likely a supermassive black hole. On 11 February 2016, the LIGO Scientific Collaboration and Virgo Collaboration announced the first direct detection of gravitational waves, named GW150914, representing the first observation of a black hole merger. At the time of the merger, the black holes were approximately 1.4 billion light-years away from Earth and had masses of 30 and 35 solar masses.: 6 In 2017, Rainer Weiss, Kip Thorne, and Barry Barish, who had spearheaded the project, were awarded the Nobel Prize in Physics for their work. Since the initial discovery in 2015, hundreds more gravitational waves have been observed by LIGO and another interferometer, Virgo. On 10 April 2019, the first direct image of a black hole and its vicinity was published, following observations made by the Event Horizon Telescope (EHT) in 2017 of the supermassive black hole in Messier 87's galactic centre. In 2022, the Event Horizon Telescope collaboration released an image of the black hole in the center of the Milky Way galaxy, Sagittarius A; The data had been collected in 2017. In 2020, the Nobel Prize in Physics was awarded for work on black holes. Andrea Ghez and Reinhard Genzel shared one-half for their discovery that Sagittarius A is a supermassive black hole. Penrose received the other half for his work showing that the mathematics of general relativity requires the formation of black holes. Cosmologists lamented that Hawking's extensive theoretical work on black holes would not be honored since he died in 2018. In December 1967, a student reportedly suggested the phrase black hole at a lecture by John Wheeler; Wheeler adopted the term for its brevity and "advertising value", and Wheeler's stature in the field ensured it quickly caught on, leading some to credit Wheeler with coining the phrase. However, the term was used by others around that time. Science writer Marcia Bartusiak traces the term black hole to physicist Robert H. Dicke, who in the early 1960s reportedly compared the phenomenon to the Black Hole of Calcutta, notorious as a prison where people entered but never left alive. The term was used in print by Life and Science News magazines in 1963, and by science journalist Ann Ewing in her article "'Black Holes' in Space", dated 18 January 1964, which was a report on a meeting of the American Association for the Advancement of Science held in Cleveland, Ohio. Definition A black hole is generally defined as a region of spacetime from which no information-carrying signals or objects can escape. However, verifying an object as a black hole by this definition would require waiting for an infinite time and at an infinite distance from the black hole to verify that indeed, nothing has escaped, and thus cannot be used to identify a physical black hole. Broadly, physicists do not have a precisely-agreed-upon definition of a black hole. Among astrophysicists, a black hole is a compact object with a mass larger than four solar masses. A black hole may also be defined as a reservoir of information: 142 or a region where space is falling inwards faster than the speed of light. Properties The no-hair theorem postulates that, once it achieves a stable condition after formation, a black hole has only three independent physical properties: mass, electric charge, and angular momentum; the black hole is otherwise featureless. If the conjecture is true, any two black holes that share the same values for these properties, or parameters, are indistinguishable from one another. The degree to which the conjecture is true for real black holes is currently an unsolved problem. The simplest static black holes have mass but neither electric charge nor angular momentum. According to Birkhoff's theorem, these Schwarzschild black holes are the only vacuum solution that is spherically symmetric. Solutions describing more general black holes also exist. Non-rotating charged black holes are described by the Reissner–Nordström metric, while the Kerr metric describes a non-charged rotating black hole. The most general stationary black hole solution known is the Kerr–Newman metric, which describes a black hole with both charge and angular momentum. The simplest static black holes have mass but neither electric charge nor angular momentum. Contrary to the popular notion of a black hole "sucking in everything" in its surroundings, from far away, the external gravitational field of a black hole is identical to that of any other body of the same mass. While a black hole can theoretically have any positive mass, the charge and angular momentum are constrained by the mass. The total electric charge Q and the total angular momentum J are expected to satisfy the inequality Q 2 4 π ϵ 0 + c 2 J 2 G M 2 ≤ G M 2 {\displaystyle {\frac {Q^{2}}{4\pi \epsilon _{0}}}+{\frac {c^{2}J^{2}}{GM^{2}}}\leq GM^{2}} for a black hole of mass M. Black holes with the maximum possible charge or spin satisfying this inequality are called extremal black holes. Solutions of Einstein's equations that violate this inequality exist, but they do not possess an event horizon. These are so-called naked singularities that can be observed from the outside. Because these singularities make the universe inherently unpredictable, many physicists believe they could not exist. The weak cosmic censorship hypothesis, proposed by Sir Roger Penrose, rules out the formation of such singularities, when they are created through the gravitational collapse of realistic matter. However, this theory has not yet been proven, and some physicists believe that naked singularities could exist. It is also unknown whether black holes could even become extremal, forming naked singularities, since natural processes counteract increasing spin and charge when a black hole becomes near-extremal. The total mass of a black hole can be estimated by analyzing the motion of objects near the black hole, such as stars or gas. All black holes spin, often fast—One supermassive black hole, GRS 1915+105 has been estimated to spin at over 1,000 revolutions per second. The Milky Way's central black hole Sagittarius A* rotates at about 90% of the maximum rate. The spin rate can be inferred from measurements of atomic spectral lines in the X-ray range. As gas near the black hole plunges inward, high energy X-ray emission from electron-positron pairs illuminates the gas further out, appearing red-shifted due to relativistic effects. Depending on the spin of the black hole, this plunge happens at different radii from the hole, with different degrees of redshift. Astronomers can use the gap between the x-ray emission of the outer disk and the redshifted emission from plunging material to determine the spin of the black hole. A newer way to estimate spin is based on the temperature of gasses accreting onto the black hole. The method requires an independent measurement of the black hole mass and inclination angle of the accretion disk followed by computer modeling. Gravitational waves from coalescing binary black holes can also provide the spin of both progenitor black holes and the merged hole, but such events are rare. A spinning black hole has angular momentum. The supermassive black hole in the center of the Messier 87 (M87) galaxy appears to have an angular momentum very close to the maximum theoretical value. That uncharged limit is J ≤ G M 2 c , {\displaystyle J\leq {\frac {GM^{2}}{c}},} allowing definition of a dimensionless spin magnitude such that 0 ≤ c J G M 2 ≤ 1. {\displaystyle 0\leq {\frac {cJ}{GM^{2}}}\leq 1.} Most black holes are believed to have an approximately neutral charge. For example, Michal Zajaček, Arman Tursunov, Andreas Eckart, and Silke Britzen found the electric charge of Sagittarius A* to be at least ten orders of magnitude below the theoretical maximum. A charged black hole repels other like charges just like any other charged object. If a black hole were to become charged, particles with an opposite sign of charge would be pulled in by the extra electromagnetic force, while particles with the same sign of charge would be repelled, neutralizing the black hole. This effect may not be as strong if the black hole is also spinning. The presence of charge can reduce the diameter of the black hole by up to 38%. The charge Q for a nonspinning black hole is bounded by Q ≤ G M , {\displaystyle Q\leq {\sqrt {G}}M,} where G is the gravitational constant and M is the black hole's mass. Classification Black holes can have a wide range of masses. The minimum mass of a black hole formed by stellar gravitational collapse is governed by the maximum mass of a neutron star and is believed to be approximately two-to-four solar masses. However, theoretical primordial black holes, believed to have formed soon after the Big Bang, could be far smaller, with masses as little as 10−5 grams at formation. These very small black holes are sometimes called micro black holes. Black holes formed by stellar collapse are called stellar black holes. Estimates of their maximum mass at formation vary, but generally range from 10 to 100 solar masses, with higher estimates for black holes progenated by low-metallicity stars. The mass of a black hole formed via a supernova has a lower bound: If the progenitor star is too small, the collapse may be stopped by the degeneracy pressure of the star's constituents, allowing the condensation of matter into an exotic denser state. Degeneracy pressure occurs from the Pauli exclusion principle—Particles will resist being in the same place as each other. Smaller progenitor stars, with masses less than about 8 M☉, will be held together by the degeneracy pressure of electrons and will become a white dwarf. For more massive progenitor stars, electron degeneracy pressure is no longer strong enough to resist the force of gravity and the star will be held together by neutron degeneracy pressure, which can occur at much higher densities, forming a neutron star. If the star is still too massive, even neutron degeneracy pressure will not be able to resist the force of gravity and the star will collapse into a black hole.: 5.8 Stellar black holes can also gain mass via accretion of nearby matter, often from a companion object such as a star. Black holes that are larger than stellar black holes but smaller than supermassive black holes are called intermediate-mass black holes, with masses of approximately 102 to 105 solar masses. These black holes seem to be rarer than their stellar and supermassive counterparts, with relatively few candidates having been observed. Physicists have speculated that such black holes may form from collisions in globular and star clusters or at the center of low-mass galaxies. They may also form as the result of mergers of smaller black holes, with several LIGO observations finding merged black holes within the 110-350 solar mass range. The black holes with the largest masses are called supermassive black holes, with masses more than 106 times that of the Sun. These black holes are believed to exist at the centers of almost every large galaxy, including the Milky Way. Some scientists have proposed a subcategory of even larger black holes, called ultramassive black holes, with masses greater than 109-1010 solar masses. Theoretical models predict that the accretion disc that feeds black holes will be unstable once a black hole reaches 50-100 billion times the mass of the Sun, setting a rough upper limit to black hole mass. Structure While black holes are conceptually invisible sinks of all matter and light, in astronomical settings, their enormous gravity alters the motion of surrounding objects and pulls nearby gas inwards at near-light speed, making the area around black holes the brightest objects in the universe. Some black holes have relativistic jets—thin streams of plasma travelling away from the black hole at more than one-tenth of the speed of light. A small faction of the matter falling towards the black hole gets accelerated away along the hole rotation axis. These jets can extend as far as millions of parsecs from the black hole itself. Black holes of any mass can have jets. However, they are typically observed around spinning black holes with strongly-magnetized accretion disks. Relativistic jets were more common in the early universe, when galaxies and their corresponding supermassive black holes were rapidly gaining mass. All black holes with jets also have an accretion disk, but the jets are usually brighter than the disk. Quasars, typically found in other galaxies, are believed to be supermassive black holes with jets; microquasars are believed to be stellar-mass objects with jets, typically observed in the Milky Way. The mechanism of formation of jets is not yet known, but several options have been proposed. One method proposed to fuel these jets is the Blandford-Znajek process, which suggests that the dragging of magnetic field lines by a black hole's rotation could launch jets of matter into space. The Penrose process, which involves extraction of a black hole's rotational energy, has also been proposed as a potential mechanism of jet propulsion. Due to conservation of angular momentum, gas falling into the gravitational well created by a massive object will typically form a disk-like structure around the object.: 242 As the disk's angular momentum is transferred outward due to internal processes, its matter falls farther inward, converting its gravitational energy into heat and releasing a large flux of x-rays. The temperature of these disks can range from thousands to millions of Kelvin, and temperatures can differ throughout a single accretion disk. Accretion disks can also emit in other parts of the electromagnetic spectrum, depending on the disk's turbulence and magnetization and the black hole's mass and angular momentum. Accretion disks can be defined as geometrically thin or geometrically thick. Geometrically thin disks are mostly confined to the black hole's equatorial plane and have a well-defined edge at the innermost stable circular orbit (ISCO), while geometrically thick disks are supported by internal pressure and temperature and can extend inside the ISCO. Disks with high rates of electron scattering and absorption, appearing bright and opaque, are called optically thick; optically thin disks are more translucent and produce fainter images when viewed from afar. Accretion disks of black holes accreting beyond the Eddington limit are often referred to as polish donuts due to their thick, toroidal shape that resembles that of a donut. Quasar accretion disks are expected to usually appear blue in color. The disk for a stellar black hole, on the other hand, would likely look orange, yellow, or red, with its inner regions being the brightest. Theoretical research suggests that the hotter a disk is, the bluer it should be, although this is not always supported by observations of real astronomical objects. Accretion disk colors may also be altered by the Doppler effect, with the part of the disk travelling towards an observer appearing bluer and brighter and the part of the disk travelling away from the observer appearing redder and dimmer. In Newtonian gravity, test particles can stably orbit at arbitrary distances from a central object. In general relativity, however, there exists a smallest possible radius for which a massive particle can orbit stably. Any infinitesimal inward perturbations to this orbit will lead to the particle spiraling into the black hole, and any outward perturbations will, depending on the energy, cause the particle to spiral in, move to a stable orbit further from the black hole, or escape to infinity. This orbit is called the innermost stable circular orbit, or ISCO. The location of the ISCO depends on the spin of the black hole and the spin of the particle itself. In the case of a Schwarzschild black hole (spin zero) and a particle without spin, the location of the ISCO is: r I S C O = 3 r s = 6 G M c 2 , {\displaystyle r_{\rm {ISCO}}=3\,r_{\text{s}}={\frac {6\,GM}{c^{2}}},} where r I S C O {\displaystyle r_{\rm {_{ISCO}}}} is the radius of the ISCO, r s {\displaystyle r_{\text{s}}} is the Schwarzschild radius of the black hole, G {\displaystyle G} is the gravitational constant, and c {\displaystyle c} is the speed of light. The radius of this orbit changes slightly based on particle spin. For charged black holes, the ISCO moves inwards. For spinning black holes, the ISCO is moved inwards for particles orbiting in the same direction that the black hole is spinning (prograde) and outwards for particles orbiting in the opposite direction (retrograde). For example, the ISCO for a particle orbiting retrograde can be as far out as about 9 r s {\displaystyle 9r_{\text{s}}} , while the ISCO for a particle orbiting prograde can be as close as at the event horizon itself. The photon sphere is a spherical boundary for which photons moving on tangents to that sphere are bent completely around the black hole, possibly orbiting multiple times. Light rays with impact parameters less than the radius of the photon sphere enter the black hole. For Schwarzschild black holes, the photon sphere has a radius 1.5 times the Schwarzschild radius; the radius for non-Schwarzschild black holes is at least 1.5 times the radius of the event horizon. When viewed from a great distance, the photon sphere creates an observable black hole shadow. Since no light emerges from within the black hole, this shadow is the limit for possible observations.: 152 The shadow of colliding black holes should have characteristic warped shapes, allowing scientists to detect black holes that are about to merge. While light can still escape from the photon sphere, any light that crosses the photon sphere on an inbound trajectory will be captured by the black hole. Therefore, any light that reaches an outside observer from the photon sphere must have been emitted by objects between the photon sphere and the event horizon. Light emitted towards the photon sphere may also curve around the black hole and return to the emitter. For a rotating, uncharged black hole, the radius of the photon sphere depends on the spin parameter and whether the photon is orbiting prograde or retrograde. For a photon orbiting prograde, the photon sphere will be 1-3 Schwarzschild radii from the center of the black hole, while for a photon orbiting retrograde, the photon sphere will be between 3-5 Schwarzschild radii from the center of the black hole. The exact location of the photon sphere depends on the magnitude of the black hole's rotation. For a charged, nonrotating black hole, there will only be one photon sphere, and the radius of the photon sphere will decrease for increasing black hole charge. For non-extremal, charged, rotating black holes, there will always be two photon spheres, with the exact radii depending on the parameters of the black hole. Near a rotating black hole, spacetime rotates similar to a vortex. The rotating spacetime will drag any matter and light into rotation around the spinning black hole. This effect of general relativity, called frame dragging, gets stronger closer to the spinning mass. The region of spacetime in which it is impossible to stay still is called the ergosphere. The ergosphere of a black hole is a volume bounded by the black hole's event horizon and the ergosurface, which coincides with the event horizon at the poles but bulges out from it around the equator. Matter and radiation can escape from the ergosphere. Through the Penrose process, objects can emerge from the ergosphere with more energy than they entered with. The extra energy is taken from the rotational energy of the black hole, slowing down the rotation of the black hole.: 268 A variation of the Penrose process in the presence of strong magnetic fields, the Blandford–Znajek process, is considered a likely mechanism for the enormous luminosity and relativistic jets of quasars and other active galactic nuclei. The observable region of spacetime around a black hole closest to its event horizon is called the plunging region. In this area it is no longer possible for free falling matter to follow circular orbits or stop a final descent into the black hole. Instead, it will rapidly plunge toward the black hole at close to the speed of light, growing increasingly hot and producing a characteristic, detectable thermal emission. However, light and radiation emitted from this region can still escape from the black hole's gravitational pull. For a nonspinning, uncharged black hole, the radius of the event horizon, or Schwarzschild radius, is proportional to the mass, M, through r s = 2 G M c 2 ≈ 2.95 M M ⊙ k m , {\displaystyle r_{\mathrm {s} }={\frac {2GM}{c^{2}}}\approx 2.95\,{\frac {M}{M_{\odot }}}~\mathrm {km,} } where rs is the Schwarzschild radius and M☉ is the mass of the Sun.: 124 For a black hole with nonzero spin or electric charge, the radius is smaller,[Note 1] until an extremal black hole could have an event horizon close to r + = G M c 2 , {\displaystyle r_{\mathrm {+} }={\frac {GM}{c^{2}}},} half the radius of a nonspinning, uncharged black hole of the same mass. Since the volume within the Schwarzschild radius increase with the cube of the radius, average density of a black hole inside its Schwarzschild radius is inversely proportional to the square of its mass: supermassive black holes are much less dense than stellar black holes. The average density of a 108 M☉ black hole is comparable to that of water. The defining feature of a black hole is the existence of an event horizon, a boundary in spacetime through which matter and light can pass only inward towards the center of the black hole. Nothing, not even light, can escape from inside the event horizon. The event horizon is referred to as such because if an event occurs within the boundary, information from that event cannot reach or affect an outside observer, making it impossible to determine whether such an event occurred.: 179 For non-rotating black holes, the geometry of the event horizon is precisely spherical, while for rotating black holes, the event horizon is oblate. To a distant observer, a clock near a black hole would appear to tick more slowly than one further from the black hole.: 217 This effect, known as gravitational time dilation, would also cause an object falling into a black hole to appear to slow as it approached the event horizon, never quite reaching the horizon from the perspective of an outside observer.: 218 All processes on this object would appear to slow down, and any light emitted by the object to appear redder and dimmer, an effect known as gravitational redshift. An object falling from half of a Schwarzschild radius above the event horizon would fade away until it could no longer be seen, disappearing from view within one hundredth of a second. It would also appear to flatten onto the black hole, joining all other material that had ever fallen into the hole. On the other hand, an observer falling into a black hole would not notice any of these effects as they cross the event horizon. Their own clocks appear to them to tick normally, and they cross the event horizon after a finite time without noting any singular behaviour. In general relativity, it is impossible to determine the location of the event horizon from local observations, due to Einstein's equivalence principle.: 222 Black holes that are rotating and/or charged have an inner horizon, often called the Cauchy horizon, inside of the black hole. The inner horizon is divided up into two segments: an ingoing section and an outgoing section. At the ingoing section of the Cauchy horizon, radiation and matter that fall into the black hole would build up at the horizon, causing the curvature of spacetime to go to infinity. This would cause an observer falling in to experience tidal forces. This phenomenon is often called mass inflation, since it is associated with a parameter dictating the black hole's internal mass growing exponentially, and the buildup of tidal forces is called the mass-inflation singularity or Cauchy horizon singularity. Some physicists have argued that in realistic black holes, accretion and Hawking radiation would stop mass inflation from occurring. At the outgoing section of the inner horizon, infalling radiation would backscatter off of the black hole's spacetime curvature and travel outward, building up at the outgoing Cauchy horizon. This would cause an infalling observer to experience a gravitational shock wave and tidal forces as the spacetime curvature at the horizon grew to infinity. This buildup of tidal forces is called the shock singularity. Both of these singularities are weak, meaning that an object crossing them would only be deformed a finite amount by tidal forces, even though the spacetime curvature would still be infinite at the singularity. This is as opposed to a strong singularity, where an object hitting the singularity would be stretched and squeezed by an infinite amount. They are also null singularities, meaning that a photon could travel parallel to the them without ever being intercepted. Ignoring quantum effects, every black hole has a singularity inside, points where the curvature of spacetime becomes infinite, and geodesics terminate within a finite proper time.: 205 For a non-rotating black hole, this region takes the shape of a single point; for a rotating black hole it is smeared out to form a ring singularity that lies in the plane of rotation.: 264 In both cases, the singular region has zero volume. All of the mass of the black hole ends up in the singularity.: 252 Since the singularity has nonzero mass in an infinitely small space, it can be thought of as having infinite density. Observers falling into a Schwarzschild black hole (i.e., non-rotating and not charged) cannot avoid being carried into the singularity once they cross the event horizon. As they fall further into the black hole, they will be torn apart by the growing tidal forces in a process sometimes referred to as spaghettification or the noodle effect. Eventually, they will reach the singularity and be crushed into an infinitely small point.: 182 However any perturbations, such as those caused by matter or radiation falling in, would cause space to oscillate chaotically near the singularity. Any matter falling in would experience intense tidal forces rapidly changing in direction, all while being compressed into an increasingly small volume. Alternative forms of general relativity, including addition of some quatum effects, can lead to regular, or nonsingular, black holes without singularities. For example, the fuzzball model, based on string theory, states that black holes are actually made up of quantum microstates and need not have a singularity or an event horizon. The theory of loop quantum gravity proposes that the curvature and density at the center of a black hole is large, but not infinite. Formation Black holes are formed by gravitational collapse of massive stars, either by direct collapse or during a supernova explosion in a process called fallback. Black holes can result from the merger of two neutron stars or a neutron star and a black hole. Other more speculative mechanisms include primordial black holes created from density fluctuations in the early universe, the collapse of dark stars, a hypothetical object powered by annihilation of dark matter, or from hypothetical self-interacting dark matter. Gravitational collapse occurs when an object's internal pressure is insufficient to resist the object's own gravity. At the end of a star's life, it will run out of hydrogen to fuse, and will start fusing more and more massive elements, until it gets to iron. Since the fusion of elements heavier than iron would require more energy than it would release, nuclear fusion ceases. If the iron core of the star is too massive, the star will no longer be able to support itself and will undergo gravitational collapse. While most of the energy released during gravitational collapse is emitted very quickly, an outside observer does not actually see the end of this process. Even though the collapse takes a finite amount of time from the reference frame of infalling matter, a distant observer would see the infalling material slow and halt just above the event horizon, due to gravitational time dilation. Light from the collapsing material takes longer and longer to reach the observer, with the delay growing to infinity as the emitting material reaches the event horizon. Thus the external observer never sees the formation of the event horizon; instead, the collapsing material seems to become dimmer and increasingly red-shifted, eventually fading away. Observations of quasars at redshift z ∼ 7 {\displaystyle z\sim 7} , less than a billion years after the Big Bang, has led to investigations of other ways to form black holes. The accretion process to build supermassive black holes has a limiting rate of mass accumulation and a billion years is not enough time to reach quasar status. One suggestion is direct collapse of nearly pure hydrogen gas (low metalicity) clouds characteristic of the young universe, forming a supermassive star which collapses into a black hole. It has been suggested that seed black holes with typical masses of ~105 M☉ could have formed in this way which then could grow to ~109 M☉. However, the very large amount of gas required for direct collapse is not typically stable to fragmentation to form multiple stars. Thus another approach suggests massive star formation followed by collisions that seed massive black holes which ultimately merge to create a quasar.: 85 A neutron star in a common envelope with a regular star can accrete sufficient material to collapse to a black hole or two neutron stars can merge. These avenues for the formation of black holes are considered relatively rare. In the current epoch of the universe, conditions needed to form black holes are rare and are mostly only found in stars. However, in the early universe, conditions may have allowed for black hole formations via other means. Fluctuations of spacetime soon after the Big Bang may have formed areas that were denser then their surroundings. Initially, these regions would not have been compact enough to form a black hole, but eventually, the curvature of spacetime in the regions become large enough to cause them to collapse into a black hole. Different models for the early universe vary widely in their predictions of the scale of these fluctuations. Various models predict the creation of primordial black holes ranging from a Planck mass (~2.2×10−8 kg) to hundreds of thousands of solar masses. Primordial black holes with masses less than 1015 g would have evaporated by now due to Hawking radiation. Despite the early universe being extremely dense, it did not re-collapse into a black hole during the Big Bang, since the universe was expanding rapidly and did not have the gravitational differential necessary for black hole formation. Models for the gravitational collapse of objects of relatively constant size, such as stars, do not necessarily apply in the same way to rapidly expanding space such as the Big Bang. In principle, black holes could be formed in high-energy particle collisions that achieve sufficient density, although no such events have been detected. These hypothetical micro black holes, which could form from the collision of cosmic rays and Earth's atmosphere or in particle accelerators like the Large Hadron Collider, would not be able to aggregate additional mass. Instead, they would evaporate in about 10−25 seconds, posing no threat to the Earth. Evolution Black holes can also merge with other objects such as stars or even other black holes. This is thought to have been important, especially in the early growth of supermassive black holes, which could have formed from the aggregation of many smaller objects. The process has also been proposed as the origin of some intermediate-mass black holes. Mergers of supermassive black holes may take a long time: As a binary of supermassive black holes approach each other, most nearby stars are ejected, leaving little for the remaining black holes to gravitationally interact with that would allow them to get closer to each other. This phenomenon has been called the final parsec problem, as the distance at which this happens is usually around one parsec. When a black hole accretes matter, the gas in the inner accretion disk orbits at very high speeds because of its proximity to the black hole. The resulting friction heats the inner disk to temperatures at which it emits vast amounts of electromagnetic radiation (mainly X-rays) detectable by telescopes. By the time the matter of the disk reaches the ISCO, between 5.7% and 42% of its mass will have been converted to energy, depending on the black hole's spin. About 90% of this energy is released within about 20 black hole radii. In many cases, accretion disks are accompanied by relativistic jets that are emitted along the black hole's poles, which carry away much of the energy. The mechanism for the creation of these jets is currently not well understood, in part due to insufficient data. Many of the universe's most energetic phenomena have been attributed to the accretion of matter on black holes. Active galactic nuclei and quasars are believed to be the accretion disks of supermassive black holes. X-ray binaries are generally accepted to be binary systems in which one of the two objects is a compact object accreting matter from its companion. Ultraluminous X-ray sources may be the accretion disks of intermediate-mass black holes. At a certain rate of accretion, the outward radiation pressure will become as strong as the inward gravitational force, and the black hole should unable to accrete any faster. This limit is called the Eddington limit. However, many black holes accrete beyond this rate due to their non-spherical geometry or instabilities in the accretion disk. Accretion beyond the limit is called Super-Eddington accretion and may have been commonplace in the early universe. Stars have been observed to get torn apart by tidal forces in the immediate vicinity of supermassive black holes in galaxy nuclei, in what is known as a tidal disruption event (TDE). Some of the material from the disrupted star forms an accretion disk around the black hole, which emits observable electromagnetic radiation. The correlation between the masses of supermassive black holes in the centres of galaxies with the velocity dispersion and mass of stars in their host bulges suggests that the formation of galaxies and the formation of their central black holes are related. Black hole winds from rapid accretion, particularly when the galaxy itself is still accreting matter, can compress gas nearby, accelerating star formation. However, if the winds become too strong, the black hole may blow nearly all of the gas out of the galaxy, quenching star formation. Black hole jets may also energize nearby cavities of plasma and eject low-entropy gas from out of the galactic core, causing gas in galactic centers to be hotter than expected. If Hawking's theory of black hole radiation is correct, then black holes are expected to shrink and evaporate over time as they lose mass by the emission of photons and other particles. The temperature of this thermal spectrum (Hawking temperature) is proportional to the surface gravity of the black hole, which is inversely proportional to the mass. Hence, large black holes emit less radiation than small black holes.: Ch. 9.6 A stellar black hole of 1 M☉ has a Hawking temperature of 62 nanokelvins. This is far less than the 2.7 K temperature of the cosmic microwave background radiation. Stellar-mass or larger black holes receive more mass from the cosmic microwave background than they emit through Hawking radiation and thus will grow instead of shrinking. To have a Hawking temperature larger than 2.7 K (and be able to evaporate), a black hole would need a mass less than the Moon. Such a black hole would have a diameter of less than a tenth of a millimetre. The Hawking radiation for an astrophysical black hole is predicted to be very weak and would thus be exceedingly difficult to detect from Earth. A possible exception is the burst of gamma rays emitted in the last stage of the evaporation of primordial black holes. Searches for such flashes have proven unsuccessful and provide stringent limits on the possibility of existence of low mass primordial black holes, with modern research predicting that primordial black holes must make up less than a fraction of 10−7 of the universe's total mass. NASA's Fermi Gamma-ray Space Telescope, launched in 2008, has searched for these flashes, but has not yet found any. The properties of a black hole are constrained and interrelated by the theories that predict these properties. When based on general relativity, these relationships are called the laws of black hole mechanics. For a black hole that is not still forming or accreting matter, the zeroth law of black hole mechanics states the black hole's surface gravity is constant across the event horizon. The first law relates changes in the black hole's surface area, angular momentum, and charge to changes in its energy. The second law says the surface area of a black hole never decreases on its own. Finally, the third law says that the surface gravity of a black hole is never zero. These laws are mathematical analogs of the laws of thermodynamics. They are not equivalent, however, because, according to general relativity without quantum mechanics, a black hole can never emit radiation, and thus its temperature must always be zero.: 11 Quantum mechanics predicts that a black hole will continuously emit thermal Hawking radiation, and therefore must always have a nonzero temperature. It also predicts that all black holes have entropy which scales with their surface area. When quantum mechanics is accounted for, the laws of black hole mechanics become equivalent to the classical laws of thermodynamics. However, these conclusions are derived without a complete theory of quantum gravity, although many potential theories do predict black holes having entropy and temperature. Thus, the true quantum nature of black hole thermodynamics continues to be debated.: 29 Observational evidence Millions of black holes with around 30 solar masses derived from stellar collapse are expected to exist in the Milky Way. Even a dwarf galaxy like Draco should have hundreds. Only a few of these have been detected. By nature, black holes do not themselves emit any electromagnetic radiation other than the hypothetical Hawking radiation, so astrophysicists searching for black holes must generally rely on indirect observations. The defining characteristic of a black hole is its event horizon. The horizon itself cannot be imaged, so all other possible explanations for these indirect observations must be considered and eliminated before concluding that a black hole has been observed.: 11 The Event Horizon Telescope (EHT) is a global system of radio telescopes capable of directly observing a black hole shadow. The angular resolution of a telescope is based on its aperture and the wavelengths it is observing. Because the angular diameters of Sagittarius A* and Messier 87* in the sky are very small, a single telescope would need to be about the size of the Earth to clearly distinguish their horizons using radio wavelengths. By combining data from several different radio telescopes around the world, the Event Horizon Telescope creates an effective aperture the diameter size of the Earth. The EHT team used imaging algorithms to compute the most probable image from the data in its observations of Sagittarius A* and M87. Gravitational-wave interferometry can be used to detect merging black holes and other compact objects. In this method, a laser beam is split down two long arms of a tunnel. The laser beams reflect off of mirrors in the tunnels and converge at the intersection of the arms, cancelling each other out. However, when a gravitational wave passes, it warps spacetime, changing the lengths of the arms themselves. Since each laser beam is now travelling a slightly different distance, they do not cancel out and produce a recognizable signal. Analysis of the signal can give scientists information about what caused the gravitational waves. Since gravitational waves are very weak, gravitational-wave observatories such as LIGO must have arms several kilometers long and carefully control for noise from Earth to be able to detect these gravitational waves. Since the first measurements in 2016, multiple gravitational waves from black holes have been detected and analyzed. The proper motions of stars near the centre of the Milky Way provide strong observational evidence that these stars are orbiting a supermassive black hole. Since 1995, astronomers have tracked the motions of 90 stars orbiting an invisible object coincident with the radio source Sagittarius A. In 1998, by fitting the motions of the stars to Keplerian orbits, the astronomers were able to infer that Sagittarius A* must be a 2.6×106 M☉ object must be contained within a radius of 0.02 light-years. Since then, one of the stars—called S2—has completed a full orbit. From the orbital data, astronomers were able to refine the calculations of the mass of Sagittarius A* to 4.3×106 M☉, with a radius of less than 0.002 light-years. This upper limit radius is larger than the Schwarzschild radius for the estimated mass, so the combination does not prove Sagittarius A* is a black hole. Nevertheless, these observations strongly suggest that the central object is a supermassive black hole as there are no other plausible scenarios for confining so much invisible mass into such a small volume. Additionally, there is some observational evidence that this object might possess an event horizon, a feature unique to black holes. The Event Horizon Telescope image of Sagittarius A*, released in 2022, provided further confirmation that it is indeed a black hole. X-ray binaries are binary systems that emit a majority of their radiation in the X-ray part of the electromagnetic spectrum. These X-ray emissions result when a compact object accretes matter from an ordinary star. The presence of an ordinary star in such a system provides an opportunity for studying the central object and to determine if it might be a black hole. By measuring the orbital period of the binary, the distance to the binary from Earth, and the mass of the companion star, scientists can estimate the mass of the compact object. The Tolman-Oppenheimer-Volkoff limit (TOV limit) dictates the largest mass a nonrotating neutron star can be, and is estimated to be about two solar masses. While a rotating neutron star can be slightly more massive, if the compact object is much more massive than the TOV limit, it cannot be a neutron star and is generally expected to be a black hole. The first strong candidate for a black hole, Cygnus X-1, was discovered in this way by Charles Thomas Bolton, Louise Webster, and Paul Murdin in 1972. Observations of rotation broadening of the optical star reported in 1986 lead to a compact object mass estimate of 16 solar masses, with 7 solar masses as the lower bound. In 2011, this estimate was updated to 14.1±1.0 M☉ for the black hole and 19.2±1.9 M☉ for the optical stellar companion. X-ray binaries can be categorized as either low-mass or high-mass; This classification is based on the mass of the companion star, not the compact object itself. In a class of X-ray binaries called soft X-ray transients, the companion star is of relatively low mass, allowing for more accurate estimates of the black hole mass. These systems actively emit X-rays for only several months once every 10–50 years. During the period of low X-ray emission, called quiescence, the accretion disk is extremely faint, allowing detailed observation of the companion star. Numerous black hole candidates have been measured by this method. Black holes are also sometimes found in binaries with other compact objects, such as white dwarfs, neutron stars, and other black holes. The centre of nearly every galaxy contains a supermassive black hole. The close observational correlation between the mass of this hole and the velocity dispersion of the host galaxy's bulge, known as the M–sigma relation, strongly suggests a connection between the formation of the black hole and that of the galaxy itself. Astronomers use the term active galaxy to describe galaxies with unusual characteristics, such as unusual spectral line emission and very strong radio emission. Theoretical and observational studies have shown that the high levels of activity in the centers of these galaxies, regions called active galactic nuclei (AGN), may be explained by accretion onto supermassive black holes. These AGN consist of a central black hole that may be millions or billions of times more massive than the Sun, a disk of interstellar gas and dust called an accretion disk, and two jets perpendicular to the accretion disk. Although supermassive black holes are expected to be found in most AGN, only some galaxies' nuclei have been more carefully studied in attempts to both identify and measure the actual masses of the central supermassive black hole candidates. Some of the most notable galaxies with supermassive black hole candidates include the Andromeda Galaxy, Messier 32, Messier 87, the Sombrero Galaxy, and the Milky Way itself. Another way black holes can be detected is through observation of effects caused by their strong gravitational field. One such effect is gravitational lensing: The deformation of spacetime around a massive object causes light rays to be deflected, making objects behind them appear distorted. When the lensing object is a black hole, this effect can be strong enough to create multiple images of a star or other luminous source. However, the distance between the lensed images may be too small for contemporary telescopes to resolve—this phenomenon is called microlensing. Instead of seeing two images of a lensed star, astronomers see the star brighten slightly as the black hole moves towards the line of sight between the star and Earth and then return to its normal luminosity as the black hole moves away. The turn of the millennium saw the first 3 candidate detections of black holes in this way, and in January 2022, astronomers reported the first confirmed detection of a microlensing event from an isolated black hole. This was also the first determination of an isolated black hole mass, 7.1±1.3 M☉. Alternatives While there is a strong case for supermassive black holes, the model for stellar-mass black holes assumes of an upper limit for the mass of a neutron star: objects observed to have more mass are assumed to be black holes. However, the properties of extremely dense matter are poorly understood. New exotic phases of matter could allow other kinds of massive objects. Quark stars would be made up of quark matter and supported by quark degeneracy pressure, a form of degeneracy pressure even stronger than neutron degeneracy pressure. This would halt gravitational collapse at a higher mass than for a neutron star. Even stronger stars called electroweak stars would convert quarks in their cores into leptons, providing additional pressure to stop the star from collapsing. If, as some extensions of the Standard Model posit, quarks and leptons are made up of the even-smaller fundamental particles called preons, a very compact star could be supported by preon degeneracy pressure. While none of these hypothetical models can explain all of the observations of stellar black hole candidates, a Q star is the only alternative which could significantly exceed the mass limit for neutron stars and thus provide an alternative for supermassive black holes.: 12 A few theoretical objects have been conjectured to match observations of astronomical black hole candidates identically or near-identically, but which function via a different mechanism. A dark energy star would convert infalling matter into vacuum energy; This vacuum energy would be much larger than the vacuum energy of outside space, exerting outwards pressure and preventing a singularity from forming. A black star would be gravitationally collapsing slowly enough that quantum effects would keep it just on the cusp of fully collapsing into a black hole. A gravastar would consist of a very thin shell and a dark-energy interior providing outward pressure to stop the collapse into a black hole or formation of a singularity; It could even have another gravastar inside, called a 'nestar'. Open questions According to the no-hair theorem, a black hole is defined by only three parameters: its mass, charge, and angular momentum. This seems to mean that all other information about the matter that went into forming the black hole is lost, as there is no way to determine anything about the black hole from outside other than those three parameters. When black holes were thought to persist forever, this information loss was not problematic, as the information can be thought of as existing inside the black hole. However, black holes slowly evaporate by emitting Hawking radiation. This radiation does not appear to carry any additional information about the matter that formed the black hole, meaning that this information is seemingly gone forever. This is called the black hole information paradox. Theoretical studies analyzing the paradox have led to both further paradoxes and new ideas about the intersection of quantum mechanics and general relativity. While there is no consensus on the resolution of the paradox, work on the problem is expected to be important for a theory of quantum gravity.: 126 Observations of faraway galaxies have found that ultraluminous quasars, powered by supermassive black holes, existed in the early universe as far as redshift z ≥ 7 {\displaystyle z\geq 7} . These black holes have been assumed to be the products of the gravitational collapse of large population III stars. However, these stellar remnants were not massive enough to produce the quasars observed at early times without accreting beyond the Eddington limit, the theoretical maximum rate of black hole accretion. Physicists have suggested a variety of different mechanisms by which these supermassive black holes may have formed. It has been proposed that smaller black holes may have also undergone mergers to produce the observed supermassive black holes. It is also possible that they were seeded by direct-collapse black holes, in which a large cloud of hot gas avoids fragmentation that would lead to multiple stars, due to low angular momentum or heating from a nearby galaxy. Given the right circumstances, a single supermassive star forms and collapses directly into a black hole without undergoing typical stellar evolution. Additionally, these supermassive black holes in the early universe may be high-mass primordial black holes, which could have accreted further matter in the centers of galaxies. Finally, certain mechanisms allow black holes to grow faster than the theoretical Eddington limit, such as dense gas in the accretion disk limiting outward radiation pressure that prevents the black hole from accreting. However, the formation of bipolar jets prevent super-Eddington rates. In fiction Black holes have been portrayed in science fiction in a variety of ways. Even before the advent of the term itself, objects with characteristics of black holes appeared in stories such as the 1928 novel The Skylark of Space with its "black Sun" and the "hole in space" in the 1935 short story Starship Invincible. As black holes grew to public recognition in the 1960s and 1970s, they began to be featured in films as well as novels, such as Disney's The Black Hole. Black holes have also been used in works of the 21st century, such as Christopher Nolan's science fiction epic Interstellar. Authors and screenwriters have exploited the relativistic effects of black holes, particularly gravitational time dilation. For example, Interstellar features a black hole planet with a time dilation factor of over 60,000:1, while the 1977 novel Gateway depicts a spaceship approaching but never crossing the event horizon of a black hole from the perspective of an outside observer due to time dilation effects. Black holes have also been appropriated as wormholes or other methods of faster-than-light travel, such as in the 1974 novel The Forever War, where a network of black holes is used for interstellar travel. Additionally, black holes can feature as hazards to spacefarers and planets: A black hole threatens a deep-space outpost in 1978 short story The Black Hole Passes, and a binary black hole dangerously alters the orbit of a planet in the 2018 Netflix reboot of Lost in Space. Notes References Further reading External links
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[SOURCE: https://en.wikipedia.org/wiki/History_of_zoology_since_1859] \| [TOKENS: 6268]
Contents History of zoology (1859–present) This article considers the history of zoology since the theory of evolution by natural selection proposed by Charles Darwin in 1859. Charles Darwin gave new direction to morphology and physiology, by uniting them in a common biological theory: the theory of organic evolution. The result was a reconstruction of the classification of animals upon a genealogical basis, fresh investigation of the development of animals, and early attempts to determine their genetic relationships. The end of the 19th century saw the fall of spontaneous generation and the rise of the germ theory of disease, though the mechanism of inheritance remained a mystery. In the early 20th century, the rediscovery of Mendel's work led to the rapid development of genetics by Thomas Hunt Morgan and his students, and by the 1930s the combination of population genetics and natural selection in the "neo-Darwinian synthesis". Second half of nineteenth century The 1859 publication of Darwin's theory in On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life is often considered the central event in the history of modern zoology. Darwin's established credibility as a naturalist, the sober tone of the work, and most of all the sheer strength and volume of evidence presented, allowed Origin to succeed where previous evolutionary works such as the anonymous Vestiges of Creation had failed. Most scientists were convinced of evolution and common descent by the end of the 19th century. However, natural selection would not be accepted as the primary mechanism of evolution until well into the 20th century, as most contemporary theories of heredity seemed incompatible with the inheritance of random variation. Alfred Russel Wallace, following on earlier work by de Candolle, Humboldt and Darwin, made major contributions to zoogeography. Because of his interest in the transmutation hypothesis, he paid particular attention to the geographical distribution of closely allied species during his field work first in South America and then in the Malay Archipelago. While in the archipelago he identified the Wallace line, which runs through the Spice Islands dividing the fauna of the archipelago between an Asian zone and a New Guinea/Australian zone. His key question, as to why the fauna of islands with such similar climates should be so different, could only be answered by considering their origin. In 1876 he wrote The Geographical Distribution of Animals, which was the standard reference work for over half a century, and a sequel, Island Life, in 1880 that focused on island biogeography. He extended the six-zone system developed by Philip Sclater for describing the geographical distribution of birds to animals of all kinds. His method of tabulating data on animal groups in geographic zones highlighted the discontinuities; and his appreciation of evolution allowed him to propose rational explanations, which had not been done before. The scientific study of heredity grew rapidly in the wake of Darwin's Origin of Species with the work of Francis Galton and the biometricians. The origin of genetics is usually traced to the 1866 work of the monk Gregor Mendel, who would later be credited with the laws of inheritance. However, his work was not recognized as significant until 35 years afterward. In the meantime, a variety of theories of inheritance (based on pangenesis, orthogenesis, or other mechanisms) were debated and investigated vigorously. In 1859, Charles Darwin placed the whole theory of organic evolution on a new footing. Darwin's discovery documented a process by which organic evolution can occur, and provided observational evidence that it had done so. This changed the attitudes of most exponents of the scientific method. Darwin's discoveries revolutionised the zoological and botanical sciences, by introducing the theory of evolution by natural selection as an explanation for the diversity of all animal and plant life. The subject-matter of this new science, or branch of biological science, had been neglected: it did not form part of the studies of the collector and systematist, nor was it a branch of anatomy, nor of the physiology pursued by medical men, nor again was it included in the field of microscopy and the cell theory. Almost a thousand years before Darwin, the Arab scholar Al-Jahiz (781–868) had already developed a rudimentary theory of natural selection , describing the Struggle for existence in his Book of Animals where he speculates on how environmental factors can affect the characteristics of species by forcing them to adapt and then passing on those new traits to future generations. However, his work had largely been forgotten, along with many other early advances of Arab scientists, and there is no evidence that his works were known to Darwin. The area of biological knowledge which Darwin was the first to subject to scientific method and to render, as it were, contributory to the great stream formed by the union of the various branches, is that which relates to the breeding of animals and plants, their congenital variations, and the transmission and perpetuation of those variations. Outside the scientific world, an immense mass of observation and experiment had grown up in relation to this subject. From the earliest times, people involved in Animal husbandry and plant breeding had made use of biological laws in a simple way. Darwin made use of these observations and formulated their results as the laws of variation and heredity. As the breeder selects a congenital variation which suits his requirements, and by breeding from the animals (or plants) exhibiting that variation obtains a new breed specially characterised by that variation, so in nature is there a selection amongst all the congenital variations of each generation of a species. This selection depends on the fact that more young are born than the natural provision of food will support. In consequence of this excess of births there is a struggle for existence and a survival of the fittest, and consequently an ever-present necessarily acting selection, which either maintains accurately the form of the species from generation to generation or leads to its modification in correspondence with changes in the surrounding circumstances which have relation to its fitness for success in the struggle for life, structures to the service of the organisms in which they occur. Darwin's theory reformed the concept of teleology in biology. According to that theory, every organ, every part, colour and peculiarity of an organism, must either be of benefit to that organism itself or have been so to its ancestors: no peculiarity of structure or general conformation, no habit or instinct in any organism, can be supposed to exist for the benefit or amusement of another organism. A very subtle and important qualification of this generalization was recognized by Darwin: owing to the interdependence of the parts of the bodies of living things and their profound chemical interactions and peculiar structural balance (what is called organic polarity) the variation of one single part (a spot of colour, a tooth, a claw, a leaflet) may entail variation of other parts. Hence many structures which are obvious to the eye, and serve as distinguishing marks of separate species, are really not themselves of value or use, but are the necessary concomitants of less obvious and even altogether obscure qualities, which are the real characters upon which selection is acting. Such correlated variations may attain to great size and complexity without being of use. But eventually they may in turn become, in changed conditions, of selective value. Thus in many cases the difficulty of supposing that selection has acted on minute and imperceptible initial variations, so small as to have no selective value, may be got rid of. A useless correlated variation may have attained great volume and quality before it is (as it were) seized upon and perfected by natural selection. All organisms are essentially and necessarily built up by such correlated variations. Necessarily, according to the theory of natural selection, structures either are present because they are selected as useful or because they are still inherited from ancestors to whom they were useful, though no longer useful to the existing representatives of those ancestors. Structures previously inexplicable were now explained as survivals from a past age, no longer useful though once of value. Every variety of form and colour was urgently and absolutely called upon to produce its title to existence either as an active useful agent or as a survival. Darwin himself spent a large part of the later years of his life in thus extending the new teleology. The old doctrine of types, which was used by the philosophically minded zoologists (and botanists) of the first half of the 19th century as a ready means of explaining the failures and difficulties of the doctrine of design, fell into its proper place under the new dispensation. The adherence to type, the favourite conception. of the transcendental morphologist, was seen to be nothing more than the expression of one of the laws of thremmatology, the persistence of hereditary transmission of ancestral characters, even when they have ceased to be significant or valuable in the struggle for existence, while the so-called evidences of design which was supposed to modify the limitations of types assigned to Himself by the Creator were seen to be adaptations due to the selection and intensification by selective breeding of fortuitous congenital variations, which happened to prove more useful than the many thousand other variations which did not survive in the struggle for existence. Thus not only did Darwin's theory give a new basis to the study of organic structure, but, while rendering the general theory of organic evolution equally acceptable and necessary, it explained the existence of low and simple forms of life as survivals of the earliest ancestry of the more highly complex forms, and revealed the classifications of the systematist as unconscious attempts to construct the genealogical tree or pedigree of plants and animals. Finally, it brought the simplest living matter or formless protoplasm before the mental vision as the starting point whence, by the operation of necessary mechanical causes, the highest forms have been evolved, and it rendered unavoidable the conclusion that this earliest living material was itself evolved by gradual processes, the result also of the known and recognized laws of physics and chemistry, from material which we should call not living. It abolished the conception of life as an entity above and beyond the common properties of matter, and led to the conviction that the marvellous and exceptional qualities of that which we call living matter are nothing more nor less than an exceptionally complicated development of those chemical and physical properties which we recognize in a gradually ascending scale of evolution in the carbon compounds, containing nitrogen as well as oxygen, sulphur and hydrogen as constituent atoms of their enormous molecules. Thus mysticism was finally banished from the domain of biology, and zoology became one of the physical sciencesthe science which seeks to arrange and discuss the phenomena of animal life and form, as the outcome of the operation of the laws of physics and chemistry. A subdivision of zoology which was at one time in favour is simply into morphology and physiology, the study of form and structure on the one hand, and the study of the activities and functions of the forms and structures of the other. But a logical division like this is not necessarily conducive to the ascertainment and remembrance of the historical progress and present significance of the science. No such distinction of mental activities as that involved in the division of the study of animal life into morphology and physiology has ever really existed: the investigator of animal forms has never entirely ignored the functions of the forms studied by him, and the experimental inquirer into the functions and properties of animal tissues and organs has always taken very careful account of the forms of those tissues and organs. A more instructive subdivision must be one which corresponds to the separate currents of thought and mental preoccupation which have been historically manifested in western Europe in the gradual evolution of what is to-day the great river of zoological doctrine to which they have all been rendered contributory. Cell theory led zoologists to re-envision individual organisms as interdependent assemblages of individual cells. Scientists in the rising field of cytology, armed with increasingly powerful microscopes and new staining methods, soon found that even single cells were far more complex than the homogeneous fluid-filled chambers described by earlier microscopists. Much of the research on cell reproduction came together in August Weismann's theory of heredity: he identified the nucleus (in particular chromosomes) as the hereditary material, proposed the distinction between somatic cells and germ cells (arguing that chromosome number must be halved for germ cells, a precursor to the concept of meiosis), and adopted Hugo de Vries's theory of pangenes. Weismannism was extremely influential, especially in the new field of experimental embryology. By the 1880s, bacteriology was becoming a coherent discipline, especially through the work of Robert Koch, who introduced methods for growing pure cultures on agar gels containing specific nutrients in Petri dishes. The long-held idea that living organisms could easily originate from nonliving matter (spontaneous generation) was attacked in a series of experiments carried out by Louis Pasteur, while debates over vitalism vs. mechanism (a perennial issue since the time of Aristotle and the Greek atomists) continued apace. Over the course of the 19th century, the scope of physiology expanded greatly, from a primarily medically oriented field to a wide-ranging investigation of the physical and chemical processes of life—including plants, animals, and even microorganisms in addition to man. Living things as machines became a dominant metaphor in biological (and social) thinking. Physiologists such as Claude Bernard explored (through vivisection and other experimental methods) the chemical and physical functions of living bodies to an unprecedented degree, laying the groundwork for endocrinology (a field that developed quickly after the discovery of the first hormone, secretin, in 1902), biomechanics, and the study of nutrition and digestion. The importance and diversity of experimental physiology methods, within both medicine and zoology, grew dramatically over the second half of the 19th century. The control and manipulation of life processes became a central concern, and experiment was placed at the center of biological education. Twentieth century At the beginning of the 20th century, zoological research was largely a professional endeavour. Most work was still done in the natural history mode, which emphasized morphological and phylogenetic analysis over experiment-based causal explanations. However, anti-vitalist experimental physiologists and embryologists, especially in Europe, were increasingly influential. The tremendous success of experimental approaches to development, heredity, and metabolism in the 1900s and 1910s demonstrated the power of experimentation in biology. In the following decades, experimental work replaced natural history as the dominant mode of research. After publication of his work The Origin of Species, Darwin became interested in the animal and plant mechanisms that confer advantages to individual members of a species. Much important work was done by Fritz Muller (Für Darwin), by Hermann Müller (Fertilization of Plants by Insects), August Weismann, Edward B. Poulton and Abbott Thayer. There was considerable progress during this period in the field that would become known as genetics, the laws of variation and heredity (originally known as thremmatology). The progress of microscopy gave a clearer understanding of the origin of the egg-cell and sperm-cell and the process of fertilization. Mendel's experiments on cultivated varieties of plants were published in 1865, but attracted little notice until thirty-five years later, sixteen years after his death (see Mendelism). Mendel tried to gain a better understanding of heredity. His main experiments were with varieties of the edible pea. He chose a variety with one marked structural feature and crossed it with another variety in which that feature was absent. For example, he hybridized a tall variety, with a dwarf variety, a yellow-seeded variety with a green-seeded variety, and a smooth-seeded variety with a wrinkle-seeded variety. In each experiment, he concentrated on one character; after obtaining a first hybrid generation, he allowed the hybrids to self-fertilize, and recorded the number of individuals in the first, second, third, and fourth generations in which the chosen character appeared. In the first hybrid generation, nearly all the individuals had the positive character, but in subsequent generations the positive character was not present in all individuals: half had the character and half did not. Thus the random pairing of two groups of reproductive cells yielded the proportion 1 PP, 2 PN, 1 NN, where P stands for the character and N for its absence – the character was present in three-quarters of the offspring and absent from a quarter. The failure of the character to distribute itself among all of the reproductive cells of a hybrid individual, and the limitation of its distribution to half only of those cells, prevents the swamping of a new character by interbreeding. The tendency of the proportions in the offspring is to give, in a series of generations, a reversion from the hybrid form PN to a race with the positive character and a race without it. This tendency favours the persistence of a new character of large volume suddenly appearing in a stock. The observations of Mendel thus favoured the view that the variations upon which natural selection acts are not small but large and discontinuous. However, it did not appear that large variations would be favoured any more than small ones, or that the eliminating action of natural selection upon an unfavourable variation could be checked. Much confusion arose in discussions of this topic, because of defective nomenclature. Some authors used the word mutation only for large variations that appeared suddenly and that could be inherited, and fluctuation for small variations, whether they could be transmitted or not. Other authors used fluctuation only for small, acquired variations due to changes in food, moisture and other features of the environment. This kind of variation is not heritable, but the small variations Darwin thought important are. The best classification of the variations in organisms separates those that arise from congenital variations from those that arise from variations of the environment or the food-supply. The former are innate variations, the latter are "acquired variations". Both innate and acquired variations include some that are more and some that are less obvious. There are slight innate variations in every new generation of every species; their greatness or smallness so far as human perception goes is not of much significance, their importance for the origin of new species depends on whether they are valuable to the organism in the struggle for existence and reproduction. An imperceptible physiological difference might be of selective value, and it might carry with it correlated variations that may or may not appeal to the human eye, but are of no selective value themselves. The views of Hugo de Vries and others about the importance of saltatory variation, the soundness of which was still not generally accepted in 1910, may be gathered from the article Mendelism. A due appreciation of the far-reaching results of correlated variation must, it appeared, give a new and distinct explanation of large mutations, discontinuous variation, and saltatory evolution. The analysis of the specific variations of organic form to determine the nature and limitation of a single character, and whether two variations of a structural unit can blend when one is transmitted by the male parent and the other by the female, were yet to be determined. It was not clear whether absolute blending was possible, or whether all apparent blending was only a more-or-less minutely subdivided mosaic of non-combinable characters of the parents. Another important development of Darwin's conclusions deserves notice. The fact of variation was familiar: no two animals, even of the same brood, are alike. Jean-Baptiste Lamarck hypothesised that structural alterations acquired by a parent might be transmitted to the offspring, and as these are acquired by an animal or plant as a consequence of the action of the environment, the offspring would sometimes start with a greater fitness for those conditions than its parents started with. In turn, it would acquire a greater development of the same modification, which it would transmit to its offspring. Lamarck argued that, over several generations, a structural alteration might thus be acquired. The familiar illustration of Lamarck's hypothesis is that of the giraffe, whose long neck might, he suggested, was acquired by the efforts of a short-necked race of herbivores who stretched their necks to reach the foliage of trees in a land where grass was deficient, the effort producing a longer neck of each generation, which was then transmitted to the next. This process is known as 'direct adaptation'. Such structural adaptations are acquired by an animal in the course of its life, but are limited in degree and rare, rather than frequent and obvious. Whether acquired characters could be transmitted to the next generation was a very different issue. Darwin excluded any assumption of the transmission of acquired characters. He pointed to the fact of congenital variation, and showed that congenital variations are arbitrary and non-significant. At the beginning of the 20th century, the causes of congenital variation were obscure, although it was recognised that they were largely due to a mixing of the matter that constituted the fertilized germ or embryo-cell from two individuals. Darwin had shown that congenital variation was all-important. A popular illustration of the difference was this: a man born with four fingers only on his right hand might transmit this peculiarity to at least some of his children; but a man with one finger chopped off will produce children with five fingers. Darwin, influenced by some facts that seemed to favour the Lamarckian hypothesis, thought that acquired characters are sometimes transmitted, but did not consider that this mechanism was likely to be of great importance. After Darwin's writings, there was an effort to find evidence for the transmission of acquired characters; ultimately, the Lamarckian hypothesis of transmission of acquired characters was not supported by evidence, and was dismissed. August Weismann argued from the structure of the egg-cell and sperm-cell, and from how and when they are derived in the growth of the embryo from the egg, that it was impossible that a change in parental structure could produce a representative change in the germ or sperm-cells. The only evidence that seemed to support the Lamarckian hypothesis were the experiments of Charles Brown-Séquard, who produced epilepsy in guinea-pigs by bisection of the large nerves or spinal cord, which led him to believe that, in rare instances, the artificially-produced epilepsy and mutilation of the nerves was transmitted. The record of Brown-Séquard's original experiments was unsatisfactory, and attempts reproduce them were unsuccessful. Conversely, the vast number of experiments in the cropping of the tails and ears of domestic animals, as well as of similar operations on man, had negative results. Stories of tailless kittens, puppies, and calves, born from parents one of whom had been thus injured, are abundant, but failed to stand experimental examination. While evidence of the transmission of an acquired character proved wanting, the a priori arguments in its favour were recognized as flawed, and cases that appeared to favour the Lamarckian assumption were found to be better explained by the Darwinian principle. For example, the occurrence of blind animals in caves and in the deep sea was a fact that even Darwin regarded as best explained by the atrophy of the eye in successive generations through the absence of light and consequent disuse. However, it was suggested that this is better explained by natural selection acting on congenital fortuitous variations. Some animals are born with distorted or defective eyes. If a number of some species of fish are swept into a cavern, those with perfect eyes would follow the light and eventually escape, leaving behind those with imperfect eyes to breed in the dark place. In every succeeding generation this would be the case, and even those with weak but still seeing eyes would escape, until only a pure race of blind animals would be left in the cavern. It was argued that the elaborate structural adaptations of the nervous system that underlie instincts must have been slowly built up by the transmission to offspring of acquired experience. It seemed hard to understand how complicated instincts could be due to the selection of congenital variations, or be explained except by the transmission of habits acquired by the parent. However, imitation of the parent by the young account for some, and there are cases in which elaborate actions must be due to the natural selection of a fortuitously-developed habit. Such cases are the habits of 'shamming dead' and the combined posturing and colour peculiarities of certain caterpillars (Lepidoptera larvae) that cause them to resemble dead twigs or similar objects. The advantage to the caterpillar is that it escapes (say) a bird that would, were it not deceived, attack and eat it. Preceding generations of caterpillars cannot have acquired this habit of posturing by experience; either a caterpillar postures and escapes, or it does not posture and is eaten – it is not half eaten and allowed to profit by experience. Thus, we seem justified in assuming that there are many movements of stretching and posturing possible to caterpillars, that some had a fortuitous tendency to one position, some to another, and, that among all the variety of habitual movements, one is selected and perpetuated because it happened to make the caterpillar look more like a twig. Man, compared with other animals, has the fewest instincts and the largest brain in proportion to body size. He builds up, from birth onwards, his own mental mechanisms, and forms more of them, and takes longer in doing so, than any other animal. The later stages of evolution from ape-like ancestors have consisted in the acquisition of a larger brain and in the education of that brain. A new feature in organic development makes its appearance when we set out the facts of man's evolutionary history. This factor is the record of the past, which grows and develops by laws other than those affecting the perishable bodies of successive generations of mankind, so that man, by the interaction of the record and his educability, is subject to laws of development unlike those by which the rest of the living world is governed. In the early 20th century, naturalists were faced with increasing pressure to add rigor and preferably experimentation to their methods, as the newly prominent laboratory-based biological disciplines had done. Ecology had emerged as a combination of biogeography with the biogeochemical cycle concept pioneered by chemists; field biologists developed quantitative methods such as the quadrat and adapted laboratory instruments and cameras for the field to further set their work apart from traditional natural history. Zoologists did what they could to mitigate the unpredictability of the living world, performing laboratory experiments and studying semi-controlled natural environments; new institutions like the Carnegie Station for Experimental Evolution and the Marine Biological Laboratory provided more controlled environments for studying organisms through their entire life cycles. Charles Elton's studies of animal food chains was pioneering among the succession of quantitative methods that colonized the developing ecological specialties. Ecology became an independent discipline in the 1940s and 1950s after Eugene P. Odum synthesized many of the concepts of ecosystem ecology, placing relationships between groups of organisms (especially material and energy relationships) at the center of the field. In the 1960s, as evolutionary theorists explored the possibility of multiple units of selection, ecologists turned to evolutionary approaches. In population ecology, debate over group selection was brief but vigorous; by 1970, most zoologists agreed that natural selection was rarely effective above the level of individual organisms. 1900 marked the so-called rediscovery of Mendel: Hugo de Vries, Carl Correns, and Erich von Tschermak independently arrived at Mendel's laws (which were not actually present in Mendel's work). Soon after, cytologists (cell biologists) proposed that chromosomes were the hereditary material. Between 1910 and 1915, Thomas Hunt Morgan and the "Drosophilists" in his fly lab forged these two ideas—both controversial—into the "Mendelian-chromosome theory" of heredity. They quantified the phenomenon of genetic linkage and postulated that genes reside on chromosomes like beads on string; they hypothesized crossing over to explain linkage and constructed genetic maps of the fruit fly Drosophila melanogaster, which became a widely used model organism. Hugo de Vries tried to link the new genetics with evolution; building on his work with heredity and hybridization, he proposed a theory of mutationism, which was widely accepted in the early 20th century. Lamarckism also had many adherents. Darwinism was seen as incompatible with the continuously variable traits studied by biometricians, which seemed only partially heritable. In the 1920s and 1930s—following the acceptance of the Mendelian-chromosome theory— the emergence of the discipline of population genetics, with the work of R.A. Fisher, J.B.S. Haldane and Sewall Wright, unified the idea of evolution by natural selection with Mendelian genetics, producing the modern synthesis. The inheritance of acquired characters was rejected, while mutationism gave way as genetic theories matured. In the second half of the century the ideas of population genetics began to be applied in the new discipline of the genetics of behavior, sociobiology, and, especially in humans, evolutionary psychology. In the 1960s W.D. Hamilton and others developed game theory approaches to explain altruism from an evolutionary perspective through kin selection. The possible origin of higher organisms through endosymbiosis, and contrasting approaches to molecular evolution in the gene-centered view (which held selection as the predominant cause of evolution) and the neutral theory (which made genetic drift a key factor) spawned perennial debates over the proper balance of adaptationism and contingency in evolutionary theory. In the 1970s Stephen Jay Gould and Niles Eldredge proposed the theory of punctuated equilibrium which holds that stasis is the most prominent feature of the fossil record, and that most evolutionary changes occur rapidly over relatively short periods of time. In 1980 Luis Alvarez and Walter Alvarez proposed the hypothesis that an impact event was responsible for the Cretaceous–Paleogene extinction event. Also in the early 1980s, statistical analysis of the fossil record of marine organisms published by Jack Sepkoski and David M. Raup lead to a better appreciation of the importance of mass extinction events to the history of life on earth. Twenty-first century Advances were made in analytical chemistry and physics instrumentation including improved sensors, optics, tracers, instrumentation, signal processing, networks, robots, satellites, and compute power for data collection, storage, analysis, modeling, visualization, and simulations. These technology advances allowed theoretical and experimental research including internet publication of zoological science. This enabled worldwide access to better measurements, theoretical models, complex simulations, theory predictive model experimentation, analysis, worldwide internet observational data reporting, open peer-review, collaboration, and internet publication. See also References
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