Subset (10)

eli5 · 25k rows

Split (1)

train · 25k rows

query stringlengths 20 300	positive listlengths 1 1	negative listlengths 1 1
How to solar panels work?	[ "Light is made of photons. Photons have energy. When a photon hits an atom, it can dislocate an electron and even remove it if the light has sufficient energy. Solar panels are made out of materials, that are easy to rip electrons away from. When you let sun shine on them and give the electrons a path to follow, yo...	[ "Thank you for your submission! Unfortunately, your submission has been removed for the following reason(s): You can find the basic answer with a google / wiki search. Please start there and come back with a more specific question. If you disagree with this decision, please send a [message to the moderators.](_URL...
What are your favorite books about the European Union?	[ "#General Background/Primers: * Ever Closer Union? An Introduction to the European Community by Desmond Dinan * Debates on European Integration – A Reader edited by Mette Eilstrup-Sangiovanni * The European Union edited by Brent F. Nelsen and Alexander Stubb #Formation: * *Origins and Evolution of the Europea...	[ "Check out Yuri Slezkine,[ Arctic Mirrors: Russia and the Small Peoples of the North](_URL_0_)" ]
Why are there no international laws prohibiting excessive forms of capital punishment (stoning, crucifixion)	[ "Because countries have to agree to it just like war laws and the Geneva convention. Why would a country that stones people to death agree to a law that says not to do so?" ]	[ "The players still file taxes, and so these deals would have to be declared somewhere or they'd be breaking actual laws and not just league rules. You can also bet that the rest of the NBA would be furiously investigating the Kosherness of the deal when someone signs LeBron for the veteran minimum." ]
Why do we use 'lbs' for an abbreviation to pounds? Where did it come from and what does it mean?	[ "Lb is an abbreviation of \"libra\" which is latin for balance or scales. The Romans had a unit of measure called libra pondo or \"a pound by weight.\" It stems from that." ]	[ "Lower right corner, there is your tray, click on the icon that looks like a keyboard, and change the setting to US English, or just US. If you don't have this little icon, look for a little taskbar that can be anywhere on your screen, usually at the top. Change it to US settings. It happens whenever you change yo...
I get completely random flashbacks of obscure dreams I've had many years ago. What could cause this?	[ "To everyone currently commenting: This is not AskReddit. Anecdotes and speculation are not acceptable replies to a question in AskScience. Please read the guidelines on the sidebar -------- >" ]	[ "In a situation that your brain finds dangerous or perilous, you brain will often try to prevent you from doing something stupid by constantly reminding you that a dangerous option exists, and for you to NOT do that thing by constantly keeping it at the forefront of your mind so you don't forget the danger of the s...
Why does everyone have to die?	[ "There's a timer in the cells that make up your body called [the Hayflick Limit](_URL_0_). They can only repair and replicate themselves a set number of times. After that they begin to break down, and the larger body parts and organs that your cells make up begin to break down, too: your joints wear away, your skin...	[ "Is it just me or does a big crunch sound more optimistic than ever-expanding-into-darkness-and-cold? It'd be an epic end to the universe, maybe spawning another. I don't see how expanding forever is anything but terribly depressing." ]
How do undercover police "hitmen" meet their murder for hire suspect?	[ "I don't understand what you mean. How is that they find these \"hitmen\" to supposedly hire? Or are you asking how they find police to go undercover as the supposed hitmen? If it's the first, then it's the same way that undercover operations occur for drug deals, prostitution and various other illegal services. Us...	[ "The supreme court had previously held that making private copies available for use by others was legal in Canada (see BMG vs. John Doe). As such, there was no legal copyright infringement that copyright holders could use as leverage to get (the subpoenas required to get) ISPs to disclose the identities of the file...
How do you know with certainty that your senses are not faulty when making knowledge claims about things like reality, logic, and even every day life?	[ "You don't. Your senses are wrong all the time." ]	[ "Well one way is by selected specific people for your study. The studied that showed evidence that vaccines caused autism actually dropped people from the study who had children not become autistic, found children who had family history of autism to include in the study, and kept the numbers small. Another way coul...
Why we get those purple spots under our eyes when we haven't slept enough.	[ "Any tips how to get rid of them or cover it up?" ]	[ "Two social psychological concepts come to mind here. State dependent memory encoding and Erickson Arousal theory of learning. State dependent learning states that what ever state of mind you are in during encoding is the state of mind where recall would be optimal. Erickson arousal theory states that learning is m...
Why do we get drunk, when we drink alcohol?	[ "Alcohol is a friendly guy. He loves to hug things, like your brain cells. When you drink a lot of alcohol your brain winds up being too busy hugging alcohol to work right. Alcohol is also a very thirsty guy. That's why you wake up dehydrated." ]	[ "Basically your brain is receiving conflicting signals from your eyes and ears. If you are looking at the floor when in a car or on a bus or a book your eyes are telling you that you are not moving. But your ear is telling your brain that you are indeed moving. So instead of your body realising you are reading a bo...
Old people with lazy jaw, mouth open full time.	[ "Some people lose muscle tone due to specific conditions, as well as due to general ageing, that can cause the face to be more lax. Changes in dentition (or lack of dentures) can reveal the space one would normally have occupied by teeth, making the gap seem larger. Cognitive changes where the person does not rea...	[ "Old pictures took a long time to expose. We're talking tens of seconds. It can be difficult to hold a still smile that long. The results were often blurry. Still faces were encouraged in order to produce a sharper image." ]
Why don't stars burn all their gas all at once even if they take several millions of billions of years to make?	[ "Go light a bucket of gasoline on fire, it'll take a few minute to burn depending on the depth/width and whatnot. Now imagine something hundreds of billions of times larger." ]	[ "The main issue is how much angular momentum they have with respect to the sun (or other body being orbiter). Starting from a great distance away they have time to accelerate a lot toward the sun from its gravity, but they don't have the momentum to the side to form a roughly circular orbit like the planets do. As ...
Why do teachers always seem to think there are hidden meanings in literature?	[ "Because the meanings really aren't that hidden. They're there. It's what made the story 'literature' in the first place. There are, of course, exceptions, but 99.999% of the time, the teacher is right." ]	[ "Alice wants to send a message to Bob. They are very far away. So, she writes a letter and gives it to Chris, who is a very nosy individual. Chris steams the envelope open, reads the letter, and then reseals it and hands it to Bob. If you are Alice and Bob, you probably don't want Chris to do that. So you develop a...
Is it possible to be struck by lightning while "inside of a cloud"?	[ "Airplanes do get struck by lighting while in the air and while inside clouds. The airplane is reasonably well protected by the skin effect which pushes all the current around the edge of the plane and not through the middle, it helps that the middle of the plane is also not very conductive compared to the outside ...	[ "The voltage is too low to push the electricity through your skin. But if instead you try licking the terminals of a 9 volt battery you will get your tongue shocked since it's wet and offers less resistance. These videos are great at illustrating how it works: _URL_1_ and _URL_0_" ]
The goosebumps and chills I get while listening to some songs.	[ "That's called Frisson. Pronounced Free zorn, there is a whole sub-reddit dedicated to it." ]	[ "You could have [tinnitus](_URL_0_). You should see a doctor if you want any further information, since asking for medical advice is not allowed in this forum." ]
Do painkillers affect more than just perception of pain?	[ "It depends. Opioids don't treat the condition in any way, they just block the pain. Ibuprofen (advil) blocks pain and reduces inflammation (swelling) which is one cause of pain. So in that sense, anti-inflammatory drugs do address the direct cause of the pain, but generally not the underlying condition. For the mo...	[ "I would recommend reading historian D. C.A. Hillman's book,The Chemical Muse: Drug Use and the Roots of Western Civilization, in which he provides numerous primary sources and historical accounts of physicians doing things like prescribing opium, sedatives, and narcotics. His historical hypothesis (albeit a far...
Can THC (lipid) be bound to other oils, and removed from urine?	[ "Why not actually try the experiment? Everything you need is available at your local drug store[1]. An irrigation syringe (one with a plunger) could work to help you separate the oil from the urine. Tests for cannabis don't usually measure THC, but rather a metabolite which is a bit more hydrophilic; however, that ...	[ "While most larger banks won’t take their business, plenty of smaller local banks and credit unions are happy to work with marijuana business owners for their needs. It was dicey for a while in the early days as most banks were not going to play ball, but these smaller local institutions came in and provided servic...
how does Spotify offline music work	[ "I don't want to get into information that will allow you to do illegal stuff, not what eli5 is for, but I'll tell you this. It saves the files in a specific location on your phone, for most android devices its all in the same place, and its accessible with pretty much any file browsing app. It isn't really hidden ...	[ "This is something I would also like to know as I listen to a lot of trade books in the car while travelling and have wondered if its ~~doing anything~~ actually planting the information into my head or I'm a just listening like a song." ]
What happens to the vein/artery that connects to the 'belly button'?	[ "They are never used again. They undergo fibrosis and scar shut. The umbilical arteries become the [medial umbilical ligament](_URL_0_) while the umbilical vein becomes the [round ligament of liver](_URL_1_). They are more used as anatomical landmarks during a surgery than for anything else. That is to say, to the ...	[ "This rerouting only is possible for very young patients. I know a teen who had it done and he has incomplete use of one half of his body. So he limps and such. But a baby who has this done will likely be completely fine. Some physical therapy is likely necessary. The young have a lot of neuroplasticity." ]
What did maths 'look like' in Newtons day? Was it very similar to what we have today?	[ "Well, here is an [online version of a English translation](_URL_0_) or Newton's own Principia. Pick a page pretty much at random and you will see a lot more words (originally in Latin), a lot more geometrical figures and lot fewer symbols than you would see in a modern text on mechanics." ]	[ "Back then people still needed jobs, now they dont and can practice harder for longer. And science helps by showing then methods on improving motions. You cam find cool videos on youtube" ]
North Korea's July 4th missile reached an altitude of 1700 miles. Why are scientists saying its range is only 4160 miles? Why couldn't it orbit/deorbit to anywhere on earth?	[ "Note that NK is testing a ballistic missile. By definition, a ballistic missile follows a ballistic trajectory, e.g., it burns its fuel immediately, and the just goes where gravity (and air resistance, etc.) take it. Getting an object into orbit, and deorbiting it accurately, is a considerably more complex task...	[ "The moon takes approximately one month to orbit the earth once. In the meantime, the earth is spinning underneath the moon once ever 24 hours. So we see the moon rise and set like the sun because of the earth's rotation, but the time that the moon rises/sets becomes later and later over the course of 27 days becau...
Is Magnetism just a manifestation of relativistic phenomena?	[ "You should think of Electric & Magnetic fields as the same thing, because they are. They just appear differently depending on your frame of reference. A moving electric field (or charge) creates a magnetic field, and a changing magnetic field creates an electric field." ]	[ "There is something similar called the nocebo effect: if you believe something will make you ill, it will. This is what is seen in people that get a rash from being near a Wi-Fi router - whether it's turned on or not. It's not the Wi-Fi signal that's causing the rash, it's the belief. Whether the same is true for...
Why are there people on the floor at the NYSE?	[ "Most of the people on the floor these days are just there for the TV cameras. It's more of a TV set these days than a place where people actually do stock trading." ]	[ "A huge portion of the world economy and how businesses run rely on the principals that these types of transaction can occur. We don't know what would happen if you couldn't trade stocks anymore. However it pretty reasonable to assume the world economy would be drastically twisted compared to the economy of today, ...
American redditors, why is healthcare privatized in the first place?	[ "Where in the world were the hospitals not private at first? Early hospitals were founded by religious orders, not government agencies." ]	[ "Certified Canadian here. Our taxes pay for hospital care. In the event that you get into an accident, get sick, or you're having a baby, it's all free. To get prescriptions you need private healthcare or to pay out of pocket. Same goes for dental." ]
How come when it gets too loud, we can't "hear" our own thoughts?	[ "I think this is a profound and interesting question and I'm going to look into it seriously. This may be related to my research interests, why aging makes it harder to ignore unwanted sounds. My suspicion is that you auditory brainstem/cortex is overrun by activation that can't be suppressed sufficiently. As you a...	[ "alcohol dilutes the fluid in the semicircular canals (these help with balance and sensing relative motion of your body) in your ear making the fluid move easier and does not stop when you stop actually moving. That is why you feel the sensation of spinning because your brain is still getting the sensation that it ...
Why have most human cultures evolved to accept use of alcohol despite it's known health risks?	[ "It used to be that fermented beverages were safer to drink than regular, often dirty, water. And aside from that, alcohol in moderated amounts does benefit health." ]	[ "You're assuming that the enjoyment of music is the purpose of an evolutionary advantageous skill, but it's actually probably just one (of many) applications of an evolutionary advantageous skill. The skill is pattern recognition. Early agriculture was made possible by our ability to recognize (seasonal) patterns...
Why do some actors/actresses stick to strictly doing films (as opposed to shows, or vise versa) whereas others meddle in both?	[ "Until recently there was a clear hierarchy: films were more prestigious than TV shows. If you could get film work, that's what you did. If you couldn't, you tried to get TV work. Now that innovative companies like Netflix and HBO are making more interesting shows, it's more mixed up." ]	[ "As a student pursuing another degree after considering becoming a doctor I will offer my simple answer. Trying to become a doctor and complete medical school carries with it an extremely high risk of failure and requires that I dedicate all of my time to that goal to have a hope of success. Rather than potentiall...
how and why did neo nazi / white nationalist mentality get to become so mainstream?	[ "Neo-Nazism and White nationalism are NOT mainstream by any means. It is simply not true that more and more people are getting whipped into a frenzy over the existence of racial or sexual minorities. The racists and sexists were racist and sexist long before Donald Trump and will continue to be racist and sexist lo...	[ "Because to our primitive ancestors, different usually meant bad. That tuber smells different? Probably rotten, don't eat it. Your dog acting weird? Might have rabies, stay away. That stranger looks different than you? Probably from a rival tribe, and up to no good." ]
Why do traditional Spanish meats tend to be cured, but traditional German meats tend to be cooked?	[ "This is more a practical than culinary concern. Cured meats last longer in warm climates like Spain, whereas this is less of a concern in the colder German climate. It is similar to why colder countries drink beer and warmer climates drink wine: grapes grow better in warm countries and barley grows better in cold ...	[ "It's an inaccurate stereotype (early Medieval Middle-Eastern and Indian swords were typically straight). It started to become accurate in the late Medieval era (when curved swords started to be used in those regions), and eventually became accurate (when the curved sword become the common sword in those regions (a...
Why does it sometimes take cold air and other times take hot air to defog my windshield?	[ "it never \"takes\" hot or cold air. what it takes is \"dryer\" air. when you use cold air either the humidity difference was VERY small or your AC compressor is kicking on to \"dry\" the air your using. this is why older cars without AC have \"really\" hot heaters. the other way to get the effect is with heat. Not...	[ "Your question is a little off, it's true that heating up super sonic flows will slow down the fluid, but heating up flow with a Mach number less than one will speed it up. This is called [Rayleigh Flow](_URL_0_). Heating up a gas in motion will cause the flow to approach mach 1, so it will slow down the velocity o...
Why does PAL and NTSC exist? Why not just have one standard? Oh, and why do those standards only apply to TVs and not computer monitors or phone screens?	[ "PAL and NTSC were methods of encoding TV in an analog signal. Europe uses 50Hz electricity, USA uses 60Hz electricity. Since the analog signal is related to the frequency of the electricity powering the device, Europe and USA had different TV standards to. With early computer monitors (driven by CGA or EGA) you d...	[ "U.S. sales taxes are VERY Complicated. We don't have a national sales tax that applies evenly across the board. Sales tax goes down to the state, county, and even local levels. The tax you pay in one store could be completely different to the tax you pay in the store across the street in extreme circumstances. Plu...
What does the edge of the universe look like?	[ "To the best of our knowledge, there is no edge. The universe either extends forever in all directions (this is the more likely case based on observational data) or is curved back around on itself in some way such that there isn't an edge (like the surface of a sphere or donut). While it's possible that there is an...	[ "This video from Sagan will help. I couldn't explain it in a better way. _URL_0_" ]
Why did purple became a 'dangerous' colour? (Like potraying poison)	[ "The earliest strong association between the color purple to danger or harm would probably be during the bubonic plague (aka \"Black Death\") that ravaged Europe during the 1300's. The bacterium responsible for all the carnage, Yersinia pestis, gave its victims purple or black buboes (basically, raised sores)...	[ "I don't this quite answers your question, but I hope it does. The development of a language is really a large thing, but I have an example in French which still influences how Francophones write today. I know if you can count it as a mistake per se, but the French word Nénuphar, also written Nénufar, was an adapt...
If light/photon has different wave lengths at different amounts of energy, why does it all move at the same speed?	[ "In short, the speed of light is a fundamental property of the universe. The energy associated with differing wavelengths of light is independent of its speed altogether. Special relativity explains how you can have light with differing energies and thus differing momenta while still being massless and always movin...	[ "Your question seems to assume that colour is a separate property that happens to change based on wavelength. Our eyes have the ability to sense the wavelength of light, and colour is simply the word we use to describe that sensation. So it isn't one thing changing in response to another - they are actually the sam...
Why is the Arab slave trade left out of textbooks and not thought in American schools?	[ "I don't think much Arab history is taught in American schools period. Not even the rise of Mohamed. Not even the Islamic reign in Spain, even though the Middle Ages is usually roughly covered. Although important, the Arab slave trade is relatively obscure compared to the vast arena of topics that could be but are...	[ "If you want to read the story of how someone actually did it: [No Man Knows My History](_URL_7_) by Fawn Brodie Also, since you brought up the guy who kidnapped Elizabeth Smart, if you want to see what makes these guys tick, check out: [Mormon Fundamentalism & Violence: A Historical Analysis](_URL_6_) Also check...
The difference between spearmint and peppermint.	[ "Spearmint's a plant, Mentha spicata. Peppermint is a hybrid, the result of a cross between spearmint and another plant in the same genus, Mentha aquatica, called watermint. They're different plants, in other words, which have similar but different flavors when eaten straight or used as a flavoring." ]	[ "Here's a pretty good explainer. _URL_0_ Basically it comes down to different memory, different promises (reliability and service life), and different marketing." ]
Why did the US government refuse to support Chiang Kai-Shek after WW2, and was this a major cause of the victory of the Chinese Revolution?	[ "The US government refused to support CSK after WW2? What? The US sent a whopping $4 billion to him within two years after the end of the Second Sino-Japanese War. The US gave him military hardware and trained his troops. The US airlifted Nationalists forces to liberated areas, including Manchuria, and also station...	[ "Greetings everyone. In the few minutes this sub has been up, it's attracting sub-standard responses. Just a reminder of a few of the rules: * no responses covering events/conditions post-1994, per this sub's \"20-year rule\" prohibiting discussion of current events * no anecdotes * no speculation OP: your question...
Why is imitation crab meat in everything instead of real crab meat?	[ "Purely because of the cost. If it tastes similar and can be had for 1/10th the price, most people are ok with imitation crab." ]	[ "There was an segment on NPR about this yesterday. The host asked the same question you did. The short version is that it's painful, expensive, and even if they get cervical cancer it's not the end of the world. Cervical cancer (according to the speaker) is slow growing and the chance of it actually causing problem...
Why do people live in areas that are known to have many devastating tornadoes?	[ "Every place is going to be prone to some sort of severe weather phenomenon (or at least, not everyone can live where there isn't some sort of severe weather phenomenon)." ]	[ "\"Just about everyone here\" Where is \"here\" for you? It sounds like your question's premise is based on a small sample set based on personal observation. Before your question is addressed, you should be making sure the premise is valid..." ]
How do we know how hot the Earths core is?	[ "Well, we don't, exactly. But we can estimate, since we know how big the Earth is (and thus how much pressure there is there) and what the Earth is made of (and thus how much radioactive decay is heating it)." ]	[ "By measuring it. There are so many contributing measurements that it is difficult to list them all in a reddit comment. [Wikipedia has an article](_URL_1_). The small uncertainty is simply a result of very precise measurements." ]
How does Whatsapp's End-To-End-Encryption work, and how do we know that it really is ecrypted all the way through?	[ "Whatsapp uses a modified form of the signal protocol - _URL_1_ The signal protocol is open source and has been scrutinized by crypto experts all over the world. It's probably pretty damn tight. You can check it out yourself if you like. _URL_0_ Could whatsapp have built in a backdoor in the closed source - sure, b...	[ "By measuring it. There are so many contributing measurements that it is difficult to list them all in a reddit comment. [Wikipedia has an article](_URL_1_). The small uncertainty is simply a result of very precise measurements." ]
Why is the government going to shutdown again?	[ "There are two issues at play right now. The Obama administration wants to see an end to sequestration limits on discretionary spending. The other issue is pro-life Conservatives are pushing for a continuing resolution that has no Title X funding for Planned Parenthood. There are reports flying around that Speaker...	[ "The ELI5 answer is simplicity. Stuff gets loaded when opening a program. If I don't want to code a way for that stuff to change while the game is open, I force a reboot. This sacrifices usability for code simplicity (or development speed)." ]
Why are some Moles cancerous while others can be completely harmless?	[ "It's more that you could have a mole growing on you, or you could have cancer growing on you, but without looking closely they look the same. It's not that the mole is cancerous, it's that you might ignore cancer because cancer might look like a mole." ]	[ "Sort of how hawaiis volcano is not particularly dangerous as it constantly and very gradually errupts. Good question, i would love a geologist to point out all the unidentified variables etc" ]
What happened to travelers who were in foreign countries when war suddenly broke out between that country and their home country?	[ "They could be interned, which happened to 110.000-120.000 Japanese people residing in the USA in 1942 after the Japanese attack on Pearl Harbor. Keep in mind that this included both american citizen and foreign travelers and residents. The Japanese people who was interned lived mostly in the West Coast of the USA,...	[ "Are DoD Employees working again? Yes, and No. A large portion of DoD has returned to work, based on the legal interpretation of POMA [(Pay our Military Act)](_URL_51_) by the Secretary of Defense. In short, civilians that are considered to be \"helping/supporting the military\" were told to report back to work...
Why was General McClellan so convinced of the numerical superiority of the rebel army during the American Civil War?	[ "On top of the link provided by /carpenter I'd say that Intelligence played its part and much of this intelligence was linked to the Pinkerton agency. I recommend reading a quite interesting, and probably unique, book titled \"The secret war for the Union\". Relates all the intelligence efforts and sources of the A...	[ "I cannot comment on the Annals, but in the Song of Roland, it's clear from the text that the author has very little real knowledge of those the author calls Muslims. He makes all sorts of descriptive mistakes that a person with even passing familiarity would not make (For example, Muslims are extremely monotheisti...
What was the role of the Emperor during the Warring States (Sengoku) period in Japan?	[ "I summarized the position of the emperor (and his court) between the Kamakura and the early Edo [here](_URL_0_). Please give it a read." ]	[ "The SEIR model is one way of projecting how many individuals in a population are Susceptible Exposed Infected and Recovered when considering an epidemic that allows an infected individual to immediately transfer the parasite to another individual. Some parasites have latency periods where an indiv...
Not sure if this is more "Ask Historians" or "Ask Science" but, essentially, how did pre-industrial civilizations move water uphill?	[ "There was the [Archimedes Screw](_URL_0_), which has been around since at least the 3rd Century BCE. Also, you should read the first couple sections on fountains, [here], (_URL_1_) where it explains how Romans used gravity to create pressure down the line. Finally, I know the Mayans created water pressure by chann...	[ "Yer not alone in askin', and kind strangers have explained: 1. [ELI5: Whistling ](_URL_6_) 1. [ELI5: How does whistling work? And how is it different from blowing? ](_URL_0_) 1. [ELI5: How does whistling work? (Wind/air pressure to sound with whistles, bottles, or lips.) ](_URL_4_) 1. [ELI5:How does whistling work...
How do astronauts shower in space?	[ "The space station has a full body shower unit. When astronauts want to take a shower, they step into a cylindrical shower stall and close the door. They then get themselves wet and wash up just like you would on Earth. However, due to weightlessness, the water droplets and soap don't flow downwards into a drain, t...	[ "A lot of experiments to see what happens when there is little to no gravity going on. How it affects human body, how it affects, plants, animals, bacteria, equipement ect. It's also much easier to set up experiments that require very cold temperatures or very low pressures. [Here's a list.](_URL_0_)" ]
What is the pH of the new, more concentrated bleach?	[ "8.25% w/v is a measurement meaning 8.25 grams dissolved in every 100 ml aqueous solution of NaOCl, or 82.5 g/L to find the concentration of the stuff - > 82.5g * 1 mol/74.442g = 1.1082M Once it enters aqueous solution, it dissociates completely to Na^+ + OCl^- and there is an equilibrium established: OCl^- + H2O <...	[ "[Rogue](_URL_1_), but seriously there are several studies on this. [Here](_URL_2_) is a news article. [This](_URL_0_) is a scientific article that relates epinephrine to loss of pigment. Epinephrine is linked to flight-or-fight response system. Hypothetically stress, or a \"shocking experience\" indirectly would ...
Why are police departments allowed to withhold body cam footage after officer involved shootings?	[ "A big reason is that releasing a video before a trial can taint the jury pool. It's very easy for the media to constantly play a video and present only one side (usually the victim). This makes a fair trial very difficult." ]	[ "They can release it in the sense that it would be available on their own website but they don't have the ability to push an update to peoples phones. I can tell you in great detail about all the objects in my house and their location but even with that information you can't change my house layout without my key to...
Albert Einsteins take on Gravity	[ "The best way to understand relativity is that it explains the why of gravity (and motion in general) better than Newtonian physics. In general relativity (GR), all objects which have no forces on them (gravity is no longer considered a force) move in straight lines called geodesics. However, the caveat here is tha...	[ "Not sure anyone can explain it better than Richard Feynman: _URL_0_" ]
what is microtonality and how they can be achieved	[ "If you use a fretless guitar, you can pick any arbitrary frequency you want. You can also bend notes to get non-semitones out of a standard instrument. Beyond that, you start looking into instruments specifically designed to produce notes with smaller intervals. ...but based on my quick searching for microtonality...	[ "Yes (to your last question, no to your title), as a result of [these relationships](_URL_0_) all being [monotonic](_URL_1_)." ]
how does someone get access to all the music in the world to be able to start a business or app, much like I < 3 Radio. [technology]	[ "You approach the people with the rights to the music (i.e. record companies, labels, artist groups, licencing companies, artists, etc) and get permission (a license) to use their music. This would be a MASSIVE undertaking (both in terms of time and money), especially if you want to start from scratch. The othe...	[ "Well the companies downsize their servers; potentially down to one actual server. The cost to keep that one server running is probably a lot less than a few hundred subscriptions / micro transactions a month. There's no point in taking it down if the company continues to exist, because you're making money off it b...
How do blogs, clickbait, and"fake news" sites actually make money from ads?	[ "There are three kinds of ad revenue. The first is as you suggest. It's called affiliate marketing, and they get paid when you click a link and buy something. That's actually fairly lucrative, as people who do end up clicking almost always buy something. The second is pay per click, where the site gets paid only wh...	[ "Think of it like this. Our body is quite the complex system. It's balancing on the brink of disaster at all times. Our cells are dividing all the time. Thousands of times each second. All that's needed for us to get cancer is that something goes wrong in one of those divisions. We are standing on the brink, and we...
Why can I listen to a certain radio station only when outside temperature is really low (-20 C/ -4 F)?	[ "The ionosphere has a different composition at night then during the day due to the sun's rays not hitting it at night. Finland is very far North, and being the winter time the ionosphere is hit by very limited sun rays. The Ionosphere reflects certain radio waves, thus allowing you to hear stations from much farth...	[ "[This](_URL_0_) previous thread explains it as [entrainment](_URL_2_). When changing the diameter of your lips, the airflow is subject to the [Bernoulli effect](_URL_1_) where it speeds up. When the air moves faster, it draws in more surrounding air which is cooler than your body temperature, thus making it feel c...
If Dorito and Cheeto dust is so annoying, why does Frito Lay continue to color everything bright orange?	[ "You say annoying. I say delicious flavor deposit." ]	[ "Because they would get sued. The legal system isn't like some kind of beep-boop robot that overlooks totally obvious loopholes. Any company that claimed \"No, we were really advertising the endorsement of Bill Gates, plumber, from Bumfuck, Nebraska.\" would get laughed out of court. As /u/Snewzie pointed out with ...
If I were able to watch an object enter a black hole, would the object going into black hole eventually come to a stop from my point of view or would it disappear as it passed the event horizon?	[ "It will technically never stop, because it won't ever reach the event horizon from your perspective. It will continue to slow down and light coming from it will continue to get red shifted further and further. It will be invisible to human eyes pretty quickly. You'd need some other kind of detector to continue to ...	[ "in short, no, the pattern will not change. Observing in this sense doesn't actually mean observing. When people say the electrons are being \"observed,\" they really mean that they are being \"measured.\" By passing them through the slit, you are essentially measuring their position - you know that they are in the...
Why when I’m loading something does the last 2 percent always take the longest?	[ "Loading screens like this often are not \"real\" in measuring their stuff, sometimes its just made up, other times its not measuring in time, and so on, in lots of combination, and again one is that its just close to a fake screen/progress meter. They are just there so the user doesn't think things are broken or f...	[ "Imma answer your question, but first let me tell you about this time I watered the lawn on a warm july afternoon, there were clouds in the sky and childrens laughter.... ok seriously, who knows, maybe they just like to hear themselves type, or create an emotional connection to the recipe, perhaps they are just kil...
How did Mexico continue as a single state when other former colonies splintered?	[ "Mexico did internally split: Texas revolted and went its own way. Remember, it was its own country for about 10 years before joining the US. Besides that, there were other internal splits. The Republic of the Rio Grande was a short-lived attempt at establishing an independent state in northern Mexico. There was a ...	[ "US states can't deny the validity of legal documents in other states. So if I own some property in Texas, and I bring that up as evidence in an Oklahoma court case, the court can't decide it doesn't count because it's from the wrong state." ]
Does pain receptors stop if you are set on fire for a while?	[ "Yes, deep burns are actually painless (the process of creating them hurt like hell though) due to the destruction of the nerves that signal pain. It's one of the warning signs of a deep burn." ]	[ "Your understanding of how heat work in atomic level is correct. But when you have bunch of atoms together, you will get a slightly different thing that react to heat differently. Your skin is made up of many big molecules (molecules= many atoms bonded together into one thing), and they need to be in a very specifi...
How do birds that swim in cold water not get frost bite on their feet?	[ "Birds are warm-blooded animals like humans. Their exposed parts are heated with a constant flow of warm blood from the rest of the body. Also, the water in a half-frozen pond is at 0 °C which is not cold enough to cause frostbite." ]	[ "The air temperature may be 0 degrees Celsius, but the sunlight, for example, could be heating the ice well beyond the air temperature. Think of it like hot asphalt in the summer, which, because of the build up of heat from sunlight, gets much hotter than the air temperature." ]
Is charge always conserved?	[ "As far as we know, yes. It's really easy to show, in any field theory, that if the field(s) follow the equations of motion for every symmetry of the physical system there are certain conserved charges Q (so that dQ/dt =0). This is the Noether theorem. So if some charge weren't conserved then either we got the symm...	[ "Quoting [Wikipedia](_URL_0_) (a bit naughty, but it's a nice way to express what I think): > The proposed theory is inconsistent with quantum mechanics and critics have ruled it out on those grounds. Which is essentially saying what you pointed out, yes. If what they're doing is as easy as it sounds - just runnin...
How does file compression, like zip files work? Does it make things magically smaller? How?	[ "The original file has data. The compressed file just describes the data using fewer words or letters than the original file. Here's a simple example. Let's say I want to send you a file with a million A's in it. Each letter is one byte, so to send you the file, I'd have to send 1 million bytes to you. That's a l...	[ "Think of it as asking \"How can a push-mower and a riding mower have different speeds? They're both mowing the same amount of lawn.\" They're not saying the data is faster or slower. They're saying the browser processes the data faster. That is, it can render the web page you're viewing faster and possibly wit...
How are all-you-can-eat buffets profitable?	[ "They calculate with what a average person would eat (because jot everyone eats tons just because it's all you can eat) and choose a price after that calculation. There are also person who don't eat much (old people e.g.)." ]	[ "These answers were largely true years ago, but not so much today. The large outlet shopping centers you see all over are not selling off quality, or outdated goods. The manufacturers make other specifically for the outlet markets, usually of slightly lower quality. Source: worked for Levi Strauss and they have doz...
What are the knots in your muscles?	[ "There are lots of theories. One of them that seems likely is that the chemicals in between our cells can become more or less viscous/thick depending on temperature or heat. That’s why applying heat or massage often helps to reduce or relieve knots." ]	[ "Someone correct me if I am wrong but it goes back to when we had much hairier bodies and when alarmed we as well as a lot of other mammals would puff up our hair to make ourselves look bigger. Think of how when you scare a dog or a cat it hunches up and its hair stands on end, same thing happens to us just we dont...
What would the discovery of magnetic mono-poles mean mean for Maxwell's equations?	[ "[Here](_URL_0_) is how the existence of magnetic monopoles would modify Maxwell's equations." ]	[ "The mediocrity principle works as follows: * Let's say we have a bag with 80 green balls, 15 red balls, and 5 yellow balls. * We draw a random ball from the bag. * Obviously the ball is far more likely to be green than red or yellow. Applied to the concept of extraterrestrial life, it works like this: * We are a r...
Why is Democracy the go to political system despite its inherent instability with every election. What made it a better choice than something else?	[ "The instability of every election is the strength of a democratic process. It means that, at least in theory, one person or group of people can't entrench themselves and turn the government into their own machine and the country into their own kingdom. The people gets a mandatory opportunity to replace those in po...	[ "This question is getting a lot of traffic after being [tweeted by @reddit](_URL_5_), so I thought I'd welcome those of you that haven't visited /r/AskHistorians before to the subreddit. Please do bear in mind that in order to keep the quality of answers here high we have [strict rules on comments](/r/AskHistorians...
Why do we use rockets to leave the atmosphere? Why can't we use something like a plane to gradually climb out? Wouldn't reentry at an angle rather than straight down be more gentle on the craft as well?	[ "Airplanes need air to produce lift. Where there is no air, or the air is very thin, airplanes cannot fly." ]	[ "Because we can predict their passing in the sky with accuracy (diabolical accuracy might I add) That is the power of Newton's mathematics. (Next time your kids ask you what is math good for this is a good example: math can explain and predict basically everything that is going on in the universe) By calculating i...
If fewer and fewer people can afford new houses/apartments etc. why do prices keep getting higher? (In USA at least)	[ "Think of it the other way around... Fewer and fewer people can afford new houses/apartments because prices keep getting higher" ]	[ "Advertising. Companies spend billions of dollars to instill that \"need to buy something\" in you, by bombarding you with messages (both overt and subtle) telling you that your value as a person is tied to owning things or \"treating yourself\". > Buy this $499 barbecue grill and be the envy of your neighbours! W...
Why is it that certain word associations just have a single way that sounds "right."	[ "Because these are commonly used combinations and the more you hear it the easier it sticks to your brain. Its a historical accident that we use \"Salt and Pepper\" instead of \"Pepper and salt.\" If half of america used \"Salt and Pepper\" and the other half \"Pepper and salt.\" eventually one of them would win ov...	[ "It's called the Tetris effect. From Wikipedia: The Tetris effect (also known as Tetris Syndrome) occurs when people devote so much time and attention to an activity that it begins to pattern their thoughts, mental images, and dreams. It is named after the video game Tetris. _URL_0_" ]
How do turtles spread to new areas?	[ "Sometimes turtles get lost and wind up on the wrong beach and lay their eggs on the new beach, meaning that nearly all the hatchlings that survive will now return to the new beach to lay their eggs." ]	[ "I want to point out that this question treats as fact something that is not part of the theory of evolution. It does not have a direction. Evolution is not moving forward toward anything. Mutations are random, and the ones the make a creature better suited to its environment insofar as it is better able to pass th...
How does the whole "nonverbal autistic" thing work?	[ "So I'm not normally nonverbal (I'm on the spectrum) but when I get stressed out I have a hard time communicating. The best way I can explain it is there's a disconnect between the part of my brain that actually has thoughts and the part of my brain that puts the thoughts into words out loud when I get stressed. Li...	[ "Some states have laws against certain sweepstakes/raffles/lotteries. By making it \"No purchase necessary\" they circumvent these and allow you to participate in sweepstakes without purchase." ]
What allows horses (and other equines) to carry so much weight?	[ "It's all about weight ratios, larger animals can absolutely carry more weight. Recommendation for maximum loading shouldn't exceed 20% of the weight of the animal so a 1000lb horse can carry 200lbs and be fine. So for the relative weight for a dog: a 50lb dog shouldn't be expected to carry more than 10lbs. [Evalua...	[ "Here's a tidbit from getting mail back from the exploration expeditions in the late 1700s and early 1800s back from, say, Africa, or at least Mungo Park did this when he set out looking for the Niger and many others under Joseph Banks did the same. On the back of these letters, they'd say that whoever delivered th...
What makes minute rice cook much faster than regular rice?	[ "Instant rice is basically cooked at the factory, then they put it in an oven to dehydrate it so it's hard again." ]	[ "I would agree with the first poster and add my own \"yes and\" When phones are using power a byproduct is heat. So when the battery gets hot it speeds up the discharge process." ]
Why when you sometimes glance at a clock, the second hand seems to stand still for a fraction of a second?	[ "Your brain replaces the blurry vision when your eyes are moving with the still image of what you're now looking at. So that means that the fraction of a second it takes for your eyes to move is replaced with the image of the clock, making the second hand appear to stand still for a while." ]	[ "The Universe is a dynamic place. Stars have been observed to move around, some quite fast. We have seen a number of [supernovae](_URL_6_) throughout the centuries, including many in other galaxies in more recent years. [Supernova 1987A](_URL_3_) has changed since we first saw it (this is really the post-supernova)...
Why lobsters and other seafood like it, MUST be cooked alive?	[ "Basically, shellfish from my understanding have a ton of bacteria. The moment they die, they immediately start to decay and release a LOT of toxins to the point that they're unsafe to eat. That's why you need to cook them immediately after they're killed (or cook em alive in extremely hot water)" ]	[ "I'm a journalist. I can tell you straight up : it's for audience. These videos create shock, which is the best hook television news has over the viewer. The whole ethics speech they'll give you about people having the right to see it is BS. Television is a business, news or not, sadly. This is even more true in th...
Why do earthworms suddenly appear when it's rainy and the earth's wet? Surely it would suit them to stay in moist conditions?	[ "The often said explanation that they escape drowning is probably not true as earthworm can survive being submerged in the water for multiple days. Some scientists think they surface to travel on the moist ground since it's faster than digging. Other explanation si that they confuse vibration from raindrops with ...	[ "well... not all homeless are really homeless. many are panhandling as a career and can do quite well at it. those that are homeless probably know places to find restrooms, public places like libraries, mass transit, ect. though Im sure some just pee in an alley if its more convenient. as for why california? might ...
Telephone Country Codes	[ "This isn't about country codes at all. Historically, any area code was preceded by a 1 or it wouldn't work. These days it's confusing. In some regions, phone companies require a 1 before the area code if it's not a free call. On some other companies (mobile carriers), the 1 is never required before an area code. O...	[ "You're forgetting several pretty big ones: China, Vietnam, Laos. Did you mean to exclude China intentionally, or what was the main purpose of the question?" ]
In what applications would it benefit to have an asynchronous computer?	[ "There are two problems here: 1. The clock is really fundamental to the way memory works. 2. No clock does not mean no propagation delay. So, if you chain a bunch of gates together, you still have to \"wait\" a certain amount of time after connecting the input before reading the output. Both of these factors severe...	[ "Essentially everything that you use will be networked together. Your clothes, your refrigerator, your alarm clock -- pretty much anything you can think of." ]
Why does water not always appear blue?	[ "> The color of water is actually blue due to the selective absorption of red wavelengths, an effect that increases with thickness. Also when certain materials or organics are dissolved or suspended in water, they can affect its color. Reflection of the sky comes into it, but when it's overcast the sea still looks ...	[ "it can start from multiple places. you can have a snow capped mountain range where water flows from the snow melt and as it flows down the mountain it gathers together at the lowest point, or you can have a well where it comes up from deep within the earth where the well is filled by rain water getting absorbed in...
Why are white watermelon seeds okay to eat, while black ones are bad?	[ "Neither will harm you once they enter your stomach. the common belief that it will sprout inside you is however, incorrect. No sunlight + no soil + no proper hydration = no growth. on a sidenote, if you had a worst case scenario, it is possible to sprout a watermelon inside you but typically this requires the seed...	[ "Are you familiar with the tone control on an audio amplifier? If the knob is set to the middle, then each frequency is amplified equally. That is like white noise. If the knob is turned halfway to bass, that's like pink noise. The low frequencies are stronger than the high. If the knob is turned all the way to b...
Why are marathons measured in miles, but other running events are measure in kilometers?	[ "Because every other event is planned according to the international SI units the entire world uses, and are nice round numbers. Marathons are based on a historical race, which doesn't have a nice round distance number in any commonly used measuring system, so people say the distance in whichever unit they're most ...	[ "Since ticket prices can vary, especially internationally, for financial purposes the box office gross is easier to compare to the cost of making the movie?" ]
Sign Language in the Roman Empire?	[ "There are no historic records of one, no. The earliest indications we have that manual communication was in use among deaf people is from the fifth century BCE, when Plato mentions it in Cratylus, but that's the only thing we know - it existed. There are a few references prior to 1000 CE of deaf people, who pres...	[ "There has been. Esperanto was designed after World War 2 to reduce the possibility of war due to miscommunication." ]
Why do scam websites that claim to sell "a revolutionary product" all look the same?	[ "Because they work. Scam artists and lazy people see an idea that brings money for little work, and they emulate that idea. Why fix something that isnt broken, right? Similar idea to why there are a million different versions of Minecraft and Bejewelled. The people peddling these things aren't innovators. They don'...	[ "They 've got something like this _URL_0_ It has a lot of cameras on it, capturing every angle. Then, the video is processed so that you can turn your phone and change the angle." ]
Why is it so hard to wake up early even though we've had the same amount of time sleeping?	[ "This is due to your circadian rhythm. It isn't feasible to adjust your circadian rhythm by more than an hour a day. So if your sleep schedule has a sudden change your circadian rhythm won't be able to catch up. This is primary factor in jet lag as well. Interesting note- Some people are more controlled by their ci...	[ "Entropy man. It takes more energy to keep something \"clean\" or \"arranged\" than it does to let it go to chaos and become a mess. Put a bunch of strings in a box and shake it. Things will get tangled up quickly, and take more time/energy from you to untie/unknot the item(s). User /u/crnaruka answered this best i...
Can one neuron produce a thought?	[ "I don't think we have enough understanding to answer this question, we don't fully understand what a \"thought\" is so we can't specifically say what's required to create one." ]	[ "The change came with the meeting between Nixon and Mao. Reading up on that meeting might be a place to start. The relationship between China (PRC) and Taiwan (ROC) is interesting. Both governments consider them to be one country. As long as the exiled-government-of-China-which-resides-in-Taiwan continued (and cont...
What the steel-cutting does to oatmeal.	[ "Steel cut oats are just oats that were traditionally cut by giant steel blades. You have a coarse, more grainy feel than the traditional oats that many people see, because the whole oat groat is just run under a chopper. Rolled oats and such are oat groats that have been processed mildly by adding heat and some mo...	[ "~~Military foods are specially selected to be very low in fiber so that soldiers don't have to interrupt their duties as often to use the toilet.~~ EDIT: I did some research, and this may be an incorrect or out-of-date rumor. I looked up the fiber [content of various MREs,](_URL_0_) and any two will give you more ...
Is there any real natural connection between all of the animals that we call "dinosaurs"? Or are they all just called that because they lived within the same time period?	[ "Yes, all dinosaurs shared a common ancestor that was not shared with any non-dinosaurs. There were other types of animals that lived in the same era that were not dinosaurs, including reptiles, mammals, amphibians, and fish. Mammals were pretty small at the time though; most of the large animals were scaly lizard-...	[ "Hi there, those interested in recommending things to OP! While you might have a title to share, this is still a thread on AskHistorians, and we still want the replies here to be to an /r/AskHistorians standard - presumably OP would have asked at /r/history or /r/askreddit if they wanted non-specialist opinion. So ...
How good of a carpenter was Jesus?	[ "If Jesus is never explicitly stated as a carpenter, how did this myth come about?" ]	[ "not sure \"best\" is the correct word...perhaps most revolutionary... for electric guitarists...there's sort of before and after hendrix" ]
Why do people want to laugh in a staring competition?	[ "Our deep down animal side makes us feel a little nervous if someone stares at us wide eyed with a serious face. This is because before we were the humans we are today who can communicate with words, we used to be animals who had to talk using our bodies. Staring without flinching used to be a way of challenging so...	[ "Distance is determined using Parallax. ever looked at your laptop screen with one eye, then changed to the other eye? what happens to the laptop screen? It seems to shift. the amount it shifts corresponds to the distance between your eyes, and the distance from you to the screen. You know the distance between y...
When I was younger, I was taught that medieval armour was so heavy that knights needed cranes to get onto their horses. I was later taught that this was a myth. Where did this misconception come from?	[ "I have never heard of this before, can you provide more information on where you saw this?" ]	[ "I have a book at home that talks about over 100 species of dinosaurs we've found, and in there it says that the reptilian image we have of dinosaurs probably isn't accurate. The book talks about how the visual images we have of dinosaurs is based solely on their skeletal structure, and then has some examples from ...
Do spiders ever do any scouting first, or do they just throw up a web and hope for the best?	[ "They do in the sense that they can determine things like air flow and light intensity, and make a judgement from there. It isn't random, but also remember some spiders just put up a web for a few days and then leave when a) there are too many bodies on it or b) there aren't enough so it isn't a huge loss if they c...	[ "What I've learned from the Swedish curling commentator for the olympics and a former championship curler [Anette Norberg](_URL_1_) (7 European Championship golds, 3 World Championship golds and 2 Olympic golds): Most shots aren't that powerful but when it comes to [\"takout shots\"](_URL_0_) when you remove stones...
How does CAR T-Cell Therapy differ from CRISPR?	[ "CAR T cells are generated through viral transduction of the Chimeric Antigen Receptor into CD8+ cytotoxic T cells. CD8+ cytotoxic T cells are isolated from a patients. A non-replicating virus integrates a piece of new DNA into the T cells' genomes. This DNA generates proteins that assemble into the Chimeric Antige...	[ "[The Straight Dope covered this](_URL_0_). Basically, they started out as being made by two different production teams, but after a certain point, they became essentially interchangeable, but they kept both names going." ]
Why is solving the 2038 problem more complicated than simply storing time as 64 bits instead of 32?	[ "The problem is not the technical aspect of how can you store the date. The problem is the logistical aspect of how do you manage all the programs which will break when you change the size of time_t. There are millions of programs and systems written to expect a 32-bit time_t. You need to have migration plans, obso...	[ "Another component worth mentioning is that YouTube clips can 'intelligently buffer', while GIFs lack this functionality. Imagine your friend likes pistachios, but hates opening them. You, in your infinite kindness, start to crack open the shells and placing the open pistachios next to him/her. If your friend were ...
Thursday Reading & Recommendations \| June 13, 2019	[ "Few days ago I asked a question [\"Looking for a book that looks at how Soviet Russia and later Soviet Union implemented a new political system in Russia in 1920s & 1930s\"](_URL_5_). Nobody replied there so perhaps someone will see it here. Any suggestions about political history of Soviet Union in 1920s and ...	[ "I see several versions available online. [This](_URL_0_) one looks pretty comprehensive, though I haven't used it myself. That link is part of a [larger project](_URL_1_) that put Charles Keppler's Indian Affairs: Laws and Treaties online." ]
After getting braces removed, why do your teeth move back to their original places?	[ "Teeth have \"memory\" to some extent this causes them to have a tendency to want to move back into their original positions. This is where retainers come in to play. The retainers purpose is to help stabilize teeth after the braces are removed thus keeping the teeth aligned (retained) in their current position. Fa...	[ "A) Endeavor is being moved to Los Angeles to be put on display in a museum. B) The space shuttles are pretty much flying bricks. They're meant to fall out of the sky allowing some degree of control. Their wings cannot provide the needed lift, and the engines aren't designed for forward movement through the atmosph...
Was attacking with the handle of your sword as a knight while holding it from the blade like in this video ? Link in the description	[ "Gripping the blade was called half-swording, and it was actually done in real life. One of the things that people often overlook when imagining combat between knights is that swords can not slash through nor normally penetrate through plate armour. As such, more creative ways of using the sword were required. One ...	[ "Factual basis yes. Absolute proof no. We start to have a very good idea of how people danced and dance's from about 1500 on. The documentation from the medieval period is mostly based around court dances, so it's hard to say how the common people danced, but we can trace the steps of the nobility much better then ...
For exoplanets to be discovered using transit photometry, do they have to be in line with earth(does the planet have to pass between earth and its star)? If so, does this mean that planets that orbit in a plane where they don't pass between the earth and its star are undetectable?	[ "Yes, the transiting planet should more or less pass between the our telescopes and the star, which of course is a limitation. There are some alternatives that do not require the planet's plane to intersect our line of sight, such as Astrometry. It involves measuring the wobble of the star as the planet orbits aro...	[ "The solar system is rotating in more or less the same plane. It's not perfectly flat, but they're mostly within a few degrees of each other. [Here](_URL_0_) is a pretty good video explaining why that is. There are also a bunch of other posts on this sub about why the solar system is flat." ]
Why are guitar, bass and drum kit the basic instrumental core of modern music?	[ "They're the simplest method of providing a chord sequence, a harmonic backup, and a rhythm, all while being easy to learn, store, transport, and amplify. The guitar and piano are the most common instruments capable of playing full chords - other lead instruments (think saxophone, trumpet, violin, etc) are only abl...	[ "Action movie stars aren't investigated in case they really shot all those guys and blew up that helicopter. Music is entertainment, it's not assumed to be factual." ]
why do people blink with one eye to each other when they want to show support/good attitude/etc	[ "Blinking with one eye is a very unnatural thing to do so hard to do on accident. And from either side it does not look unusual. So it is the perfect hint for people you are looking at but not others around you." ]	[ "Yawning in animals is generally a full body thing, you ever do a massive yawn where you have to stretch your arms and tense your leg muscles and stuff? It's a pack/herd animal adaption. Deer and Zebras it's really clear in, when some of the group is sleeping and some are keeping watch, one will yawn/stretch to kee...

Subsets and Splits

No community queries yet

The top public SQL queries from the community will appear here once available.