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Why have Jewish people and their religion faced so much persecution in their history? | Well other religions as well, Christianity was widely persecuted against in Rome, dynastic China has had several cases, a recent one being in 1846. Muslims had the crusades against them as a widely used one, and did persecute Christians through taxes as it is specifically written in the Quran not to force conversion to... |
Why do so many prices end in .99? | It's a sales trick. It makes the consumer think the price is lower, or more in their price range. $19.99 seems a lot smaller than $20 psychologically, so you think it closer to the $10-15 dollar range. If it skews the average consumer to buy, they'll take that penny 'loss' since they got a consumer to buy it for $19.99... |
Why do girls seem to pretty consistently have neater handwriting than boys? | Women tend to have better fine motor skills which are essential for writing neatly, whereas men have better large motor skills. Obviously a woman who doesn't work on her penmanship will not write as neatly as a man who practices his a lot, and there are men who possess excellent fine motor skills and women with excelle... |
Does rubbing alcohol on your feet or any other part of your body help reduce a fever? | It might cool your feet slightly, through evaporation. Putting wet socks on will take heat away. It won't have any lasting effect on a fever. All that said, the dangers of fevers are often really overrated, especially by parents. |
How do programming API's work? | APIs are just ways of abstracting what's actually going on in the code. You don't need to know exactly how it works, all you need to know is that `System.out.println` prints stuff to the screen. This allows for the easy reuse of code, and it also means you can easily update parts of the code without having to update th... |
Why do American house prices rise when they aren't selling? | This is the phenomenon of [sticky prices]. This an example of a "bad equilibrium". If everyone were to lower the price of houses, then people could sell and buy at the lower price and the market could achieve equilibrium. However, it is in no one's interest to lower their price unless everyone else does so first. So, e... |
What's the purpose of "Region Locking" software, DVDs, and Blu-Ray Discs? | To price an item differently for different regions, to honor different distribution agreements that exist in different geographies and to make a futile attempt to control illegal distribution of content. |
What the hell happened at the end of Inception? | The ending is left somewhat ambiguous as to whether or not the top starts to falter. Ultimately the top isn't supposed to matter. Throughout the film, Cobb is constantly obsessed with reality vs the dream. He holds a gun to his head as the top spins, he rushes to the bathroom after exiting the dream to spin his top, et... |
why does every disease seem curable in mice? | You have a bit of a confirmation bias here, in short you only ever hear about the diseases that have been cured in mice, they dont bother to announce when a drug fails to cure the mice. As to why we cure diseases in mice they are very similar to us on a immune system level and thus are a stepping stone in developing dr... |
How do Japanese and Chinese people use all of their languages' characters on a keyboard? | What amounts to autocorrect. I don't have experience with Chinese, but for Japanese, you type sounds; and the computer "corrects" a consonant and vowel sound into hiragana; and then when you finish a word "corrects" hiragana into the appropriate kanji. I assume Chinese works similarlyThey type the words out phoneticall... |
If the we didn't have a moon, what effects would that have on Earth/Us ? | We would have no tides, which would affect the oceans a great deal. As life began in the oceans, maybe the world would have no life at allwe would have limited tidal forces because they would now be under influence of the sun. Tidal forces contribute to applying pressure to the planet keeping it stable. the instablity ... |
Why is it increasingly difficult to concentrate the longer I read? | This explains attention span for any activity in general: _URL_0_Try to put it down and do anything else for 30 mins..go outside, do dishes, watch tv reading is something that, depending on what your reading, can require a lot of thought and concentration. Try this and see if it helps. :) |
Why does the world never react to terrorist attacks in 3rd world countries, like they do to attacks in wealthy countries? | Same reason as why you referred to the West as "the World": you identify more with those you regard as close to you. Closeness can be geographical, political, cultural I doubt many in Sri Lanka care too much about this Paris thing, for instance. Just like most Westerners didn't care about the Tamil tigersAn attack in t... |
is not the only place to get answers. | I agree with this. It seems like some people are using this subreddit as an alternative for Google.I'm guilty of this, but I understand now. Sorry for the pollution!", 'I think we should revitalize /r/answers That can be for the small/not-explainable-to-a-five-year-old questions, ELI5 can be what it was intended to be.... |
How is a diesel engine such as the VW TDI able to obtain better fuel economy than an unleaded engine? | One of the factors which affects the efficiency of an internal combustion engine is the degree to which the working fluid are allowed to expand, which is related to the compression ratio. Diesels use a much higher compression ratio, so they start off with a higher maximum efficiency. Add to that diesel fuel itself is m... |
When you press the corner of our eyelid, we can see our own eyeball | I'm intrigued, but I'm not going to try that. Congratulations on getting a whole bunch of random redditors to poke themselves in the eye though. Have an upvote.What you are seeing is your retinal cells being squished by the increased intraocular pressure caused by your self-inflicted eye poke. Since your brain interpre... |
Do you get electrocuted if you touch overhead electrical wires? Why? | > Wouldn't the wires be coated in rubber or something similar? They are not coated. To do so would be prohibitively expensive and would make them much heavier, requiring more structure to support them. Touching power lines absolutely can electrocute you, which I was under the impression was ubiquitously known.You can t... |
Why do some Li-Ion batteries in storage hold their charge for years, while others die after a few months and become permanently unusable? | Lithium ion isn't one type of battery. It's a whole family of batteries that use lithium based electrolyte. The choice of material for electrolyte and the anode and cathode wildy change the characteristics of the battery. Common li-ion are : lithium cobalt oxide, common for cell phones, to lithium sulfur oxide, lithium... |
How do salmon/sea turtles/birds know how to return to where they were born? | Hardcore anadromous fisherman here. Scientist do not truly know how salmon and steelhead find their way to their natal stream but they postulate that when the fish first hatch they imprint on the chemical composition of their redd things like mineral content etc. The fish then travel great distances in the ocean and na... |
Nuclear power and the modern world. | Nuclear power is safe, cost effective, and environmentally friendly. I never understood why environmentalists are against nuclear power. The only byproduct of nuclear energy is pure steam. IIRC, France gets 70 or 80% of its electricity from nuclear power.Nuclear power is one of the most effective ways of producing powe... |
Why doe seem like everything man-made related to space is white? | Temperature control. Once you get outside the atmosphere, there is nothing to dampen the effects of sunlight/moonlight. No clouds, no atmospheric diffusion, no nothing. Now, I'm sure you've gotten into a dark colored car on a hot day. Ever seen what happens to, say, a cellphone or a bottle of soda that's been left in a... |
Different dimensions. Why we see the ones we see and what are they? | I think you may be confused. A dimension could be something in physics/mathematics or it could be a shape. or it could be a theoretical layer of reality I can help you, but you have to be more specific. |
Why do downloads, file transfers and renders always seem to linger on 99% longer than any other percentage? | I dont know how accurate this is, however at the end of the download i assume this is the whole package being checked for errors and any missed packets or segments are redownloaded to ensure it is completeThere can be a vast number of factors that affect progress reports including bugs, design flaws, and programmer laz... |
What does ICANN do? | They do two things: 1. Every device connected to the Internet has an address. This is how they send messages to each other and the messages actually get to their intended recipient. ICANN organizes handing out the addresses so you don't unintentionally end up with two computers having the same address. 2. Internet addr... |
How do we measure a country's area of landmass when borders are so randomly shaped? | Now that we have computers it's pretty easy to do via a wide variety of methods. Prior to computers we often used a tool called a [Planimeter] to trace and calculate the area of landmasses. Currently software like ArcGIS makes it extremely easy to automatically calculate the area of any shape on a map in the database. ... |
What would happen if a relatively small object, say from the size of a bullet up to a car, somehow accelerated to the speed of light at close to ground level in the atmosphere? | This [xkcd] comic provides a great 'What If?' explanation of exactly what you're looking for. Basically a huge thermonuclear explosion, and then some. |
What did humans think time and gravity were before Einstein and Newton? | Newton didnt really change anything about how we percieved time that I can think of. Stuff falling down was intuitive to people, it didnt need explaining. Its just the way things were. And if it did need explaining "because god made it that way" was a perfectly valid answer to them. |
What is versimilitude in literary terms. | Okay. Verisimilitude is the idea that the reader can believe in what is going on in the story, that even if it's strange or fantastic, it makes sense to the reader based on what's been explained. Good Verisimilitude: *Luke Skywalker stood in front of Darth Vader, and smiled. He took out his lightsaber, activating it wi... |
Why does a saxophone sound "sexier" than other instruments? | I suspect it's because it's a woodwind instrument that's made with brass. The wooden reed gives a certain softness/ smokiness to the tone that you don't have in brass instruments , but the brass gives it a sharper tone than wooden woodwinds . It's soft, but with a little edge to it. It could also be because of the size... |
How does cellular/wireless spectrum work, why is it so limited | If I have ten fiber optic cables I want to use to transmit different signals, they can be right next to each other and not interfere with one another. If I put ten spark gap radio transmitters next to each other and and start broadcasting a different signal with each, someone listening in will hear all ten signals supe... |
Why is slashing the neck of a chicken considered a more humane method than decapitating it? | I don't use either method as I think they're less humane than the method I use. However, if I had to venture a guess: I know from experience holding a chicken calms them; positioning while holding them is pretty easy to do when trying to slice their jugular vein. They don't have especially thick skin so getting to the ... |
Why can adjusting the phone connector for audio cables fix the issue of music only coming out of one side of the speakers/earphones? | I think you're referring to the audio jack input on a phone. If you look at a stereo jack itself you will see two dividing lines. This is because there are essentially two different contacts for two separate signals . These marry up with the contacts in the input and each signal is sent along a different wire to its sp... |
Why do corporations have to use the ® or the ™ symbols next to logos if they're already covered by copyright law? | There's a bit of misinformation happening here. First of all, you don't have to use those symbols. Provided that you've registered the trademark and are actively using it as you told the trademark office you would, your trademark is safe. It's just convenient to use the symbols next to your mark to communicate to the p... |
Going back to college. CLEP tests, money, and dealing with nearly half my age. | Some schools have programs specifically for adults returning to school. [Here's the one for my school.] Don't try to deal with the kids. Most of the Education majors are too dumb to live. Find the people that want to succeed in each class and be sure they are part of your group projects. Spend the rest of the time enga... |
how come my phone can act as a hotspot for mobile internet but not wifi | Effectively, what you're talking about there is using your phone as a type of router - which is pretty much what it does when it's in use as a hotspot. A router transfers traffic between two or more network interfaces - in the case of your phone as a hotspot, it uses the mobile interface for its internet connection, an... |
why do black people have extremely curly hair? | Straight hair that lies flat tends to hold in heat. That's an advantage in cold climates. Curly hair allows heat to escape while still providing protection from the sun to the skin underneath. That's an advantage in hot climates. Melanin in skin tends to block what's needed to make vitamin D while offering some protect... |
Why are Jewish people defined by religion rather than race? Serious | Jewish refers to both a religion and an ethnicity. Jews from Europe and Jews from the Middle East actually turn out to be very genetically similar, while being dissimilar to other Europeans or Middle Easterners. They share common ancestry in the original Israelite tribes of a few thousand years ago. Not all religious J... |
The logic/science behind "drafting" in racing games (Following behind a car to gain more speed) | When a car is moving, it experiences drag force, or air resistance. This is why fast cars are more aerodynamic, meaning they reduce air resistance. When another car is right behind a car experiencing this drag force, the subsequent drag force is less, since the air, which causes air resistance, is being pushed up by th... |
How does the "36-books-for-1" scheme work? | It's a [pyramid scheme], and therefore a scam. Though the early adopters *might* get their books, it's damned near certain that no one else will. EDIT: By the time you're around a dozen levels deep, there are more books owed than there are people on Earth.Ponzi scheme, with a "for a good cause" angle. You only get book... |
Is there racism toward white people? | If you define racism as acting biased against an individual simply due to their race, yes, it does happen. It may not be institutionalized nor prevalent as with racism against non-whites, but it does happenRacism definition: the belief that all members of each race possess characteristics or abilities specific to that ... |
How do shows like south park and family guy get away with openly making fun of famous people | It's not illegal to make fun of someone.People in the public eye have a higher standard required to sue for libel/slander. Taken from - _URL_0_ "Can libel suits be brought by a public figure? Public figures have a more difficult time proving defamation. Politicians or celebrities are understood to take some risk in bei... |
Why in Western music do minor keys tend to be associated with seriousness or negative emotions? | There is some debate about this, but I would say it is simply a matter of association and relation. You grow up listening to minor keys which accompany sad scenes, and vice versa. Some arguments for this: 1) Major songs can also be "sad" simply by association. For example [Amazing Grace] is regarded by many to be sad, ... |
why do dogs all over the world behave exactly the same? | Just like how humans all act relatively similar, all dogs act relatively similar. Ofcourse just like people, dogs can behave differently to others. But the basic, 'bark' 'eat' 'wag tail' are all instinctual traits. They're hard wired and if you're a dog, you'll do these things uncontrollably.they dont mine is a dick, p... |
Why do most cameras have a lower limit for ISO that is ISO100? | The signal coming off the sensor has a certain noise figure. The ISO setting adjusts how much this signal is amplified before being digitised but there's a limit in the range of this amplification. If you allowed, a minimum setting of say, ISO50 instead of ISO100, that would increase the amount of noise being digitised... |
How do compost piles get so hot that they can smolder or catch on fire? If the action is bacterial, why doesn’t it kill the bacteria involved? | Hay bales heating up occurs in stages. You're correct that bacteria are responsible, and that they do sometimes make so much heat in the bale that they die from the temperature. The problem happens when a new type of bacteria takes over that IS heat-resistant, or if the bacteria that get in the hay in the first place a... |
Why do certain traits like skin color and hair type mix when passed to a child but things like eye color and other things don't? | Genetics aren't just determined by dominant and recessive traits. Things like hair and skin color show incomplete dominance, in which both traits are "dominant" and the resulting combination of the 2 traits results in a mixture of the parental traits. Even eye color shows incomplete dominance to a degree but it is a mi... |
What's the big deal about this keystone pipeline? Why won't it get approved and what will it affect environmentally and economically if it DOES get built? | The Keystone XL Pipeline is the one that takes a majority of Canadian oil to American refineries in Texas, Oklahoma and Illinois. To find out why THATs important check [this chart that just popped up] on /r/dataisbeautiful. The pipeline already exists. They want to twin/enlarge it along its length to double capacity, a... |
Why exactly aren't British people allowed to have guns (Please feel free to clarify it) | We don't really want guns. We don't really want any weapon! We just want to drink tea all day and moan about the weather. |
Why does epoxy glue curing, an exothermic reaction, speed up when heat is applied? | You are, indeed, confusing chemical reactions with state changes. Freezing ice is a state change. Curing an epoxy is a reaction between two substances. The key to understanding what's going on is to remember what heat actually is- it's the amount of energy in a substance. The more energetic the substance, the faster it... |
How do those FBI internet scams work where they freeze your entire browser? | Browsers have built in features for saving user inputted text. For example, if i write out this comment without submitting and i try to leave the page or hit the back button, chrome will ask me if I really want to leave the page. This is so i don't lose my post or other work by inadvertently pressing the wrong button. ... |
Why do some memories remain vivid in our memory and some memories are forgotten about? | For good recall, memories need to be recalled. Huh? Memories are reinforced the more they are accessed. In fact, there's evidence that when you remember something, the memory is accessed and mostly erased, then re-written. If you don't access a memory, it tends to fade away. But accessing it will refresh it and bring i... |
Why does it say "cleans 99.9% of germs" on sanitizers? If it would be false advertising for 100%, what would be the case for 99.9% | Because it kills 99/100 TYPES of germs. That 1% of germs are immune to their particular brand of sanitation. That means if you have 1000 germs on a thing, the sanitizer will kill all 1000 of them, or maybe almost none of them - if that type of germ is of the 1% resistant breed. This is also why antibiotics and antibiot... |
I learn that there's billions of meteorite in space, so why we didn't have another Earth-impact for the past 65M years? | The chance of an Earth impact is really low to begin with. Space is really, really, REALLY big and comparatively speaking, Earth is minuscule. Asteroids are even more minuscule. Put a tennis ball on the ground and walk 100ft away from it and try to hit it with a Tic-Tac. It'll be really hard to do. For a bonus challeng... |
why once our brain has seen through an illusion is it so hard to unsee? | The brain looks for patterns in the environment, sometimes even if it's just noise. Like shapes in the clouds or ways to game a poker machine. The reason is that it's better to be safe than sorry when it comes to making out things in the world around you that *might* be dangerous or *might* be useful to you, as it has ... |
given the growing consensus on climate change - why has there not been an adverse impact on real estate proprotities prices in costal areas? | Even fairly aggressive climate change models don't predict huge disruptions for the next century or so. Most people don't care very much if the house they buy now will be in good shape for their grandchildren. |
What happens to mercury once it enters the human body? | Our bodies class of enzymes called selenoenzymes that have many functions. One of these functions that is incredibly important is their ability to counteract oxidative cellular damage. The explanation of how they do this is a whole other subject that I am going to omit in this explanation to make it less complicated. S... |
Why Japanese people have problems with L/R letters? | Hi, I'm a linguist!! The reason is that in Japanese, these two sounds are *allophones* of the same *phoneme*. An Allophone is the actual physical thing that your mouth does when you make a sound. A Phoneme is the mental representation of that sound in your head. In Japanese, the phoneme /l/ is realized as [l] or [ɹ], d... |
the difference between synchronous and asynchronous communications | Synchronous "Existing or occurring at the same time." Synchronous communication happens at the same time, like a phone call. Asynchronous communication happens at different times, like sending letters. |
Why Does a Computer Moniter Still Give Off Light When Displaying a Black Image? | LCD displays have a backlight- without it, the display would be too dim to see. Even when the liquid crystals are as dark as they can get, a little bit of light from the backlight still shines throughTo display blacks, the crystals in an LCD are aligned in such a way that they block the majority of light, but not compl... |
How the Canadian healthcare system works. | Canadian here. I'll give this a shot. Every province has its own system, though there are some federal rules they all follow. As a result, each province's system is a wee bit different. Things like visits to the doctor, the emergency room, hospital stays and the like are covered. You never pay a cent. They are paid for... |
Why does a blank CD only hold 80 min of music when it can hold 700mb of files? | When you burn an audio cd that can be played in a normal CD player, the audio files are not compressed. 80 min of uncompressed music is 700MB. MP3's are compressed files. They remove some data to make the file sizes smaller. But to play MP3's your CD player needs to know how to decode MP3 data. That why not all CD play... |
Why don't aircraft jet engines have a little mesh net that keeps birds and other things from being caught in the engine? | At the speed they fly, it's like being shot with a bird-sized cannonball. A mesh won't do anything other than add more shrapnel to the engine.This video has engine testing of all kinds of ingesting stuff plus bird strikes. _URL_0_The issue is you cannot reduce airflow into the engine *at all*. So any mesh that is open ... |
can you drink pee if you are dying of thirst, also, if you are starving can you eat poop. | Both are bad ideas, just the poop is a worse idea than the pee. Eating poop will almost certainly make you vomit - the stomach cannot take large populations of e-coli bacteria - which will make you lose valuable water. If you are dehydrated, the little urine you do produce will already be saturated with waste products ... |
How does ramen keep you full for so long, when it's mostly just carbohydrates and fat? | Unless you're eating a ton of ramen, it really shouldn't. They're simple carbs and are digested fairly quickly by your body. I was in Japan last year and ate ramen 2-3x a day . At no point was I "full" and satiated as you're suggesting. |
Why did colour come to cinema before TV (For example, Dr. No was released in 1962 in colour but An Unearthly Child was in greyscale and released in 1963) | It all comes down to transmission. To move a old black and white movie, you put a can of black and white film in a box and drove it to a theater, you then shined a light through it and it showed up on screen. To move an old color movie, you put a can of color film in a box and drove it to a theater, you then shined a l... |
The difference between a strait, sound, and a channel in geography | A strait is a narrow connection, usually between two "distinct" bodies of water. For example, the Strait of Gibraltar connects the Mediterranean Sea with the Atlantic. A channel is usually much wider, and is usually defined as a body of water in and of itself. Often, the two bodies of water it connects are not consider... |
How do combined power sources on Cars and Bikes work with each other?(Electric bike example) | Both are pushing the wheel around the axle at the same time. There's no problem with that. It's the same as if two people are pushing a stalled car. Whatever torque the motor is applying against the mounts is added to the torque applied by the gear cassette. It's as simple as 5 ft•lb + 10 ft•lb = 15 ft•lb. |
Why do you often hit a motivational wall before doing the last part of a task? | I recently took a knitting class, and the teacher mentioned that this is really common problem for many knitters. Once the project is almost done, they lose motivation just finish up those last few rows and bind off. Her theory was that once you can actually see the thing you were trying to create, you get most of the ... |
How is the Tour De France scored? | You might want to be more specific, but here's a rundown. General Classification - This is the overall winner of the Tour de France. This is decided by adding together how long you took to finish each stage. Everyone who finishes within a bike length of each other gets the same time at the line. The current leader gets... |
Why we get congested and snotty when we get emotional/cry? | Emotions are older circuits in the brain/nervous system wiring plan. There's a lot of vasodilation that occurs in the face, sinuses. That causes swelling of the mucosa, hence the congestion. Now as to why that is, what's the evolutionary reasoning, I have no clue. Is it something that is vestigial from our mammalian an... |
How is Kidz Bop able to make money off of covers, wouldn't that be an issue with copyright? | They pay licensing fees to the original song writers. Copyright doesn't mean you can't make a copy, just that you need permission to make one.Songs are divided into two halves: the song and the recording. Half the money of the Kidz Bop sales go to the original songwriter, and half goes to them for the recordingSomeone ... |
How is it some foods can be smelt thru urine or sweat despite them being completely digested? | There are chemicals that your body doesn't use and can't break down. You've gotten the nutrition from it that you can, and now the rest of it is being discarded. It doesn't make sense for your body to expend energy breaking these things down when there's no real benefit. Also, *throne.Yeah like that tuna smell. Totally... |
Why don't people scream in pain when shot? | > Especially in movies Kinda killed the question right there with that bullet. Movies tell stories. They very very seldom are perfectly representative of reality, and that really applies to action films where people are shot, because those people blow up BMW's by kicking their fenders, or jump from fifty foot buildings... |
How do roofing companies "eliminate" deductibles? | It generally involves the roofer over charging the insurance or getting you to submit a fake receipt [here] is an article written by the bbb in Dallas because it has gotten that bad also [here] is they blog write up, much easier read', "Hey, I'm relevant! I work as a project coordinator for a decent sized roofing compa... |
Why would homeland security be involved with taking down kickass torrent? | HSI a subdivision of ICE , a component of DHS has the legal authority to investigate cross-border crimes including counterfeiting and intellectual property theft. They would have been involved in taking down kickass torrents because the site hosted torrents that infringed on the intellectual property rights of US compa... |
I've heard that there are approximately 10^120 possible different chess games. How did they come up with this estimate? | _URL_1_ It's a very very rough estimate based on two observations: 1. A typical game of chess lasts about 80 turns . 2. There are about 1000 options for each pair of moves . So if you have 40 pairs of moves, each of which with 10^3 options, you get 10^120 total possible games. You might be interested in [this Numberphi... |
Why are most homeless people guys ? | One contributing factor may be that women, especially women with children, tend to get some priority when it comes to shelters and housing programs.Just as said previously, men are more prone to mental disorders. This has to do with genetics with the X and Y chromosomes. Ex. Color Blindness. The Y chromosome can't help... |
What is the difference between horsepower (hp) and brake horsepower (bhp)? | Horsepower is the power you observe, and the net output horsepower of the vehicle. Brake horsepower is the power that the engine is capable of producing, if some of it was not lost due to friction, inefficiencies, etc. |
How can printer ink prices (3.000 times higher than gasoline) be such an active and well known topic without anything changing? | Because printer companies gouging people for their product isn't a conspiracy. Competition is constrained because the only people who can make printer cartridges for specific printers are the ones who make the printers. |
Why do some "believers" pass out when being preached / "cured" by evangelist preachers? | Have you read Elmer Gantry by Sinclair Lewis? Solid gold and it's about an evangelical preacher/conman. Lewis mentions a few tricks used to make the revival experience more "authentic" but I can't remember any off the top of my head except the hired actors. I also believe part of it is just people wanting to believe so... |
What exactly is happening in the spine when you stretch/crack your back? | Scientists explain that synovial fluid present in your joints acts as a lubricant. The fluid contains the gases oxygen, nitrogen, and carbon dioxide. When you pop or crack a joint, you stretch the joint capsule. Gas is rapidly released, which forms bubbles. In order to crack the same knuckle again, you have to wait unt... |
what does "undetectable" mean for an HIV positive person? | it means their viral load is so low it cannot be detected by current tests. They are still HIV positive, but the disease is in check, and their risk of infecting someone else is significantly lower, but never eliminated.It means that no virus can be found in blood samples from that person. This generally happens to HIV... |
Why are there still people living without fresh water? | The issue isn't that people have no water, but that people don't have access to potable water that's safe to drink, and more usual that people don't have access to water to irrigate their land. In most of these scenarios, the issue is actually with sanitization - the [Haiti Cholera Outbreak] was spread by poor sanitiza... |
What does it mean when X amount of one countries currency is worth Y amount of another countries currency? | For example, lets say you can get a hamburger for $2 USD, but in Canada, you have to pay $3 for that same hamburger. At its most basic level, currency is converted based upon this idea . Other factors can affect this rate, however, such as banks deciding to pay less to convert a currency in order to make money. |
How do they make food items low fat? | It's hard to generalize, since different processes are used for different kinds of foods. For milk and other dairy products, fresh unprocessed whole milk the cream will readily separate off the top. This is done on an industrial scale to make milk, cream, butter, whey, all sorts of diary products. you can put the cream... |
Why does our face, especially the nose and forehead get oily but other body parts like your knees don't? | Our faces are very porous- little holes from where hair used to be. While cells on our face stopped making hair , some of those oils are still being made; the oil isn't soaked up- and there is a lot more being made compared to our knees. Also the sun stimulates production of these oils. On a cellular level: differences... |
Why does the sun appear to move much faster when it sets than during the rest of the day? | Your brain doesn't understand that the sky is round. It perceives it more as a giant room, with the walls very far away, and a level ceiling connecting them. The sun and moon are about the same size and move at about the same speed no matter where they are in the sky. When the sun or moon is above us, we perceive it as... |
Why do developers make some games console-exclusive? | **Cost:** Consoles require licenses and development kits to develop for. Along with the time and effort required to port a game to another console, it may not be affordable/worth it for some studios. **Exclusivity deals:** The creator of the console could pay the developers to only release a game for their console. The... |
How does Buzzfeed get away legally by posting .gifs from movies/sports/tv shows when that is all copyrighted source material. | Fair Use provisions allow you to incorporate parts of copyrighted work for purposes of critical review, journalism / news reporting, parody/satire and for certain other uses without seeking explicit permission. This protection can be afforded even in the case of commercial distribution. Not all uses of video clips from... |
"You need permission to perform this action" in Windows 7 | User Account Control was put in by microsoft to try to dissuade people from mindlessly installing programs that might have viruses. People ignore it, so it's just another step in the installation process that people rapidly click through. You can disable it in your control panels > user accounts settings. |
Why is it good or bad to elevate feet/legs when sleeping? | No scientist here, but I believe it helps blood flow. Good, because it helps any pooled blood or fluid, that winds up in the feet during the day, drain towards the heart. Most likely bad if you don't have a circulatory issue and may cause cold or numbness for lack of flow. |
Why are FM stations limited to the range of 88 to 108? | That's simply the range allocated by the FCC for FM radio in the USA. [Radio spectrum] is a valuable public resource. Probably one of the most useful things the FCC does is manage the allocations to the various different uses. |
Why don't streaming media devices (Roku, Chromecast, Apple tv, etc...) have antenna capabilities to allow us to get local live television stations? | - Indoor antennae suck. - Compact antennae suck even more. You want a large one which would make the unit far uglier. - They're designed to be plugged into TVs which can take their own aerials. |
Why do some people put their windshield wipers "up" when it is going to snow/ice? | Both. The snow and ice can be hard to get out of the space between the wiper and your hood, and when you're scraping it out you can easily tear the rubber off the blade if it's glued to the windshield with ice. |
if a smoker goes in to a coma for long enough, do they wake up without nicotine addiction? | Baseline physical addiction would be gone. However, the person would still have habitual cravings . Addition has several levels to it. Many "hard drugs" are addictive to the point where the body relies on it to function. Smoking tobacco only mildly has this, but it is the part which makes you feel "hunger" for nicotine... |
What are containerized applications? | I think it's easier to understand when you hear another name for containers: **jails**. Containers are basically a way to wall off one application from another inside the same computer. Application A cannot talk to application B without explicit permission. This has a number of advantages. First, it allows for much gre... |
What is the difference between absurdism and existentialism? | Absurdism is about the idea that humans will attempt to find meaning in life and the universe, but never really can because there is no meaning to any of it. But humans will keep trying even then. Existentialism says there is no inherent meaning in life or the universe, but humans are able to find or create their own m... |
Why can't South Carolina citizens call for a vote to remove the confederate flag? | Illinois allows constituent initiated ballot initiatives. South Carolina does not. In SC only the legislature can initiate ballot measures. If South Carolina residents want their government to change their behavior they'll need to elect people who want to change their behavior. There's a map about it here: _URL_0_", 'W... |
Why do we accidentally bite our tongues? | Think of it the other way around. You are constantly moving your tongue, without seeing it, around a pair of constantly working scissors. Your body potentially has a whole suite of neurons designed to match opening your jaw with the tongue being able to move forward, and retreating as your jaw closes. But nothing is pe... |
how do lawyers have access to so much information about people involved in a case and does the regular citizen have access to the same information at any given time? | Lawyers involved in a court case have access to an extremely powerful process called "discovery." The lawsuit has to pass the first test, the court deciding that the plaintiff's claim is remotely plausible and would be against the law if proven true. Then, the parties can demand information from each other and use the ... |
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