Split (3)

train · 273k rows

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What is the scientific reasoning behind some substances that have a reverse tolerance?	[ "\"Reverse tolerance\" or drug sensitization is a real thing that can occur with certain drugs or alcohol. If you think about alcohol in particular, over time you build up a tolerance for it and it takes more alcohol to get you intoxicated. Supposing you continue to drink heavily, you can damage your liver, which c...
How do spiders get to the top floor of apartment buildings?	[ "They can climb. They can also get blown along by the wind until they land on a higher floor of a building.", "You’re assuming it started on the ground floor when it well could have been born one story from the top.\n\nThey can also climb well." ]
Why do big threads from the default subs never appear on my front page until they're 8 hours old and have 5000 comments already?	[ "Because of the way you have it sorted - by \"Hot.\" It takes the subs you're subscribed to and picks the hottest ones, so big subs like pics and adviceanimals show the highest scored threads.\n\nSwitch to sort by top - hour and you'll see a lot more, relatively quick revolving threads. Be active on them and comme...
Where gold gets it's worth from and why it's so valuable to economies	[ "If something is useful, then it's valued more.\n\nIf something is hard to find, then it's valued more.\n\nIf something is shiny, it's valued more.\n\n\nSince Gold is useful, hard to find, and shiny, it is very highly valued.\n\nA few reasons Gold is used:\n\n* for jewelry and awards, because it's shiny and has a n...
Why is it more expensive to eat healthy?	[ "Your premise is somewhat flawed; it is not necessarily more expensive to eat healthy. It certainly can be, if you buy certain types of raw ingredients, but does not have to be. \n\nIndustrial scale food processing is extremely efficient, so a lot of prepared food is cheaper than the make-it-yourself equivalent.....
circular polarization.	[ "Take a piece of rope and hold one end of it. Let the other end hang towards the floor.\n\nNow wiggle your hand back and forth in a line from side to side. The rope will now make a wavy pattern in one direction (to the left and right). This is essentially linear polarization.\n\nIf you stop, let the rope settle,...
What should I ask college student programmers if I want them to be able to design VR simulations for my research team?	[ "Do you have an actual computer science department at your university? I'd give the project description to a professor in that department and ask them to advertise. (This happens at my school... but my school is a small college, not a university, so maybe these kinds of interactions are more appropriate.) If what y...
The game Skyrim. I've watched half a dozen videos about it, but don't get it.	[ "It's an \"open-world\" RPG. Kinda like WoW, but tailored for a single player. Essentially, they've plopped a big sheet of land down; decorated it with trees, mountains, and other nature stuff; built some towns, cities, dungeons, and people or creatures to populate them; wrote stories and quests for the player to d...
How do we see images in our head?	[ "Going for an explanation a 5 year old might really get:\nPart of your brain (the back part) controls vision. When you see a real banana, that part of your brain responds to the light coming into your eyes, and it tells the rest of your brain about what the banana looks like. It says things like \"it's yellow,\" \"...
How can IQ be so confidently ascribed to racial characteristics (i.e. hereditary)?	[ "Simply put:\n\n1) There is really no consensus amongst psychological sciences that IQ tests can be considered to be an accurate measure of anything, other than performance on the specific and abstract tasks that constitute IQ tests.\n\n2) Even when using an arbitrary test like an IQ test, it has proven completely ...
Is there any significant difference between different brands of water?	[ "Significant, I wouldn't say. The source of the water changes its composition, and therefore also the taste. If two brands get water from the same source, they would be practically identical, unless one of them really screwed up the bottling process.\n\nUnless you have a serious mineral deficiency, I can't imagine ...
When I have a cold, why does my nose often continue to feel blocked after I have blown it thoroughly?	[ "The blocked feeling doesn't only come from mucus, it's usually inflammation of the sinus cavities and nasal passage.", "When you have a cold, your sinuses become inflamed and swell to the point where all the built up fluid can't drain. This causes a lot of pressure and the \"blocked\" feeling. This swelling is...
A compulsory music license.	[ "From my understanding (and a brief brushing-up-on-it), it basically means that if you pay a copyright holder for the license to cover their work, they're required by law to allow you to do so.\n\nIn other words, they (have to) shut up and take your money.\n\nEDIT: Clarity." ]
"Jailbreaking" phones	[ "An iPhone is made up of bits of metal and code. The metal bits are called the hardware. The code is called the software and is the operating system and apps. There is also something called 'firmware\" which allows the software to talk to the hardware.\n\nWhen Apple sells you an iPhone they only want you to be a...
Why do some "antibacterial" agents cause resistance, and some don't?	[ "Right, I don't know the specifics regarding triclosan and tea tree oil but I can take a crack at this.\r\rAntibiotics and antimicrobials work, in their broadest sense, by either killing bacteria or preventing their growth. To do this they must interfere with some process that the bacteria need to live or to grow. ...
Why does being tickled make us laugh when it is such an unpleasant sensation?	[ "The short answer is we really don't know. Of course, [people have their guesses](_URL_1_), and it seems to be that it isn't a naturally occurring physiological response driven by (as you put it) a biological imperitive. Most of the hypotheses point out that you typically 'learn' about tickling through a parent/c...
How is it that prisoners can earn law degrees while serving time, but on the outside people go into six-figure debt to get the same degree?	[ "Offering prisoners the chance to study in prison lowers their chances of returning to a life of crime afterwards and improves their behaviour while inside.\n\nThat said it is not the same degree. Do you really think prospective employers are going to look at a harvard degree and a prison degree and are going to go...
How do they measure how fast a continent is moving?	[ "There are fixed points all over the world. People are continuously measuring the position of these points in relation to each other. It used to be with triangulation and celestial observations but nowadays they are using GPS.", "There are 3 main methods:\n\n1) long-duration GPS monitoring. Fix a specialized GPS...
What the hell happened to Shia Lebouf?	[ "Well, art being subjective and all, it's hard to ELI5 when the tone of the question implies that there is a level of negative judgement that leaves no room for an answer that tries to explain - because it would always sound like a defense...\n\nBut I'll try?\n\nSo there is Shia, a guy with problems like me and you...
Why is the Word "Character" Pronounced as "Ka" racter and not "Cha"racter ?	[ "Character and chameleon come from Greek root words. When the Greek word was adopted into our alphabet the \"ka\" sound was written as \"ch\". \n\nChampion and Chalk came from Latin and over time were pronounced with the \"cha\" sound that was also written as \"ch\" in our alphabet.", "\"Character\" comes from ...
Why do we humans get so easy problems with their teeth while animals don't brush their teeth at all and most of them do fine their entire life?	[ "We have terrible diets that contribute to damage to our teeth. Many animals also don't live as long as humans, and that damage can take a while to really compromise your teeth.\n\nAnd ultimately, if an animal's teeth go bad, which does happen, that's typically the end of their entire life. You don't see the bad ...
If any, what would the differences be to your body if you lost weight by burning calories through exercise, as opposed to eating the same amount of calories less?	[ "As far as just plain weight loss goes, there would be no difference whatsoever. Your body requires somewhere between 1500-2000 calories per day just to survive adequately.You burn X and consume Y. If X > Y you lose, if Y > X, you gain, regardless of how you create that imbalance. \n\nHowever, muscles mass takes mo...
Do film companies pay theatres to show their movies, or do theatres pay film companies for the rights to show their movies?	[ "It's a shared pool that works out roughly like this, the ticket price is split between the studio and the theater at a percentage \n\n1st week: 90% studio / 10% theater\n\n2nd: 80/20\n\n3-5: 60/40\n\n...etc\n\nSpecific movies and specific studios may have deals that alter the percentage for each week and timeframe...
Why is it, that on the same amount of food consumption, I feel fine to exercise, but feel empty to edit an essay?	[ "The empty feeling when thinking about the essay is a psychological process. There could be many reasons your brain wants to avoid it. This most likely has nothing to do with food intake.\n\nSounds like small dose of the maladaptive coping mechanism psychologists call avoidance. (Yes, it's a thing.) Plain old pro...
Why do people listen to music with earbuds in while driving a vehicle that most likely has a stereo in it?	[ "They could be listening to music from an audio player which can't connect to the car stereo (for example if the car doesn't have an aux input).\n\nOr they could just be using their headphones to talk to someone on the phone.\n\nAnd where I'm from it's very illegal.", "I think in most cases they are just using th...
Why are head-lice a 'kids thing' that seems to only exist amongst groups of younger aged children?	[ "Because kids, when at school and play they get their heads close to others. Adults, consider it rude/weird/childish to do that. While the lice may spread from child to adult, it is less likely to happen between two adults." ]
What is Citizens United and why is it such a big deal	[ "Say you want to donate money to Hillary Clinton's campaign. There is a limit to how much you can donate. You can donate a max of $2,700 to Hillary Clinton this election.\n\nNow say you want to make a $1 million commercial about how deporting illegal immigrants is a horrible thing to do. You spend the money and you...
non-alcoholic beer	[ "It's still beer (or it was). It's brewed by creating a beer with a very low fermentable sugar content, fermenting it out (results in 2-3% abv) and then placing the liquid in a vacuum chamber and reducing the pressure until the alcohol boils itself off. The vacuum chamber is used to prevent the addition of heat muc...
The Turkey/Netherlands Diplomatic Tensions	[ "Basically Turkey wanted to send someone over to the Netherlands to campaign, but the Dutch government was like 'we want none of that here'. Turkey said some not so nice things about the Netherlands and they responded by not allowing the Turkish campaign dude to land there with a plane.\n\nTurkish people in return ...
Why does the toast get crunchier when it cools?	[ "The steam evaporates off, so it's less moist.", "Food keeps cooking after you remove the heat source, since the heat is still in the food itself. Water will also continue to be evaporate." ]
How do computers know what time it is?	[ "They have an internal clock, a lot like a wristwatch. It keeps track of the time. There's even a small battery on the motherboard to keep track when the computer is unplugged." ]
Can someone please explain the sunk cost fallacy?	[ "Imagine you've had a car for the last fifteen years, and that car is a piece of shit. It breaks down every few dozen miles, it smells gross, it looks like shit, and you're constantly pouring money into it. The Sunk-Cost fallacy is where you would be more likely to keep the car and keep pouring money into it than t...
What's the difference between the different tiers of gasoline and is it really worth the extra money for premium gas?	[ "Higher grades of gasoline are refined more carefully to give them a higher octane rating, which means they burn more consistently and are less likely to \"knock\" (ignite prematurely) under the higher compression in high-performance engines. Unless your car's owner's manual specifically says you need to fill the ...
finite elements method	[ "Ok I'll have a go..\n\nSo FEM is a numerical method used to solve boundary value problems..\n\nTo give you an example, imagine a system where a metal rod was placed with one end in an oven at constant temperature, and the other in a fridge at constant temperature. FEM could be used to approximate the temperature p...
What happens when we sleep? How does sleeping “recharges” us?	[ "Someone can explain this much better, but it basically gives your brain and body some downtime to do some repairs, make some different proteins, etc. It also gives your brain time to process the events in your day and serves as a break from constant stimulation" ]
How come New York City is so expensive yet 8,000,000 people live there?	[ "Uh, can you explain your logic of why 8 million people living there would prevent it being expensive?" ]
How come I can tell you the numbers that come before and after 7 right away but have to go through the alphabet in my head to tell you the letters that come before and after H?	[ "You do addition and subtraction on numbers when you are a little kid all the time. So, 7-1 and 7+1 are intuitive. You don't do the same for letters. H+1 and H-1 aren't drilled into your head as a little kids, so many people have to recite the alphabet to know the position of letters.", "Think about how often ...
What causes SAD (Seasonal Affective Disorder) and what helps?	[ "Though not definite, some think SAD is a caused by a lack of sunlight during the winter months. People have come to this conclusion since countries that are further North are more likely to report higher rates of depression during the darker months.\n\nMelatonin is a hormone that our bodies produce. It is importan...
Why do the windows in the back seats of cars not go down all the way like in the front?	[ "It's not to keep children in the car. It's simply that there isn't enough space inside the door for the window. The bottom of a front car door is bigger than the window, so it can go entirely inside. The rear doors have a cutout for the rear wheel well, which keeps the window from being able to go all the way down...
The current American immigration problem	[ "The unbiased report is that the politicians are still arguing what they think needs to be done. And since they're arguing and arguing and arguing about it, nothing gets done. \n\nIn the meantime, many poor and desperate people from the impoverished countries of Central America will continue to immigrate illega...
Herman Cain's 9-9-9 Plan	[ "It regards taxes. 9% tax on corporate income, 9% tax on individual income, and a 9% national sales tax across the board. \n\nof coarse this is impossible, but people are having fun with herman, and I think he is having fun too", "9% Corporate Income Tax\n\n9% Personal Income Tax\n\n9% National Sales Tax\n\nThe e...
Why is it I must wear I seat belt and have to get safety checks on my car constantly but people can drive in a Jeep with no doors or sit in a school bus with no seatbelts?	[ "For jeeps I know its safer tp have your doors removed when off roading so you can jump out if needed when rolling. As for busses without the seatbelts im assuming its becausw the vehicle is so large it will blow through most vehicles but ya never know, thats why our god, google, is here to help" ]
Why is it that some days after my hour long drive home, I cannot remember the journey at all?	[ "The human brain has (as I understand it- could be wrong) a bit of an autopilot function. However, with this said, if the brain detects a problem, it pops out of it. That's the reason why you start paying attention just as the guy cuts you off, from what I understand.", "Most likely it's because it is such a comm...
Why do a lot of hospitals have religious connections?	[ "For centuries medical care was provided by churches and temples. This is because for many religions care for the sick is a major command of their faith. This tradition has carried on into modernity and a lot of hospitals are heavily funded by religious groups, and many are physically owned by them with the religio...
Friendzoning	[ "Someone is in the friend zone when they have romantic feelings for a friend and that friend does not have romantic feeling in return. Orientations are not a factor. \n\nWith this there are a few outcome possibilities. \n\n1) The person with Romantic feelings ignores them and continues being a friend. Often at the ...
How are the elements in the 7th row of the periodic table created in a lab?	[ "Particle accelerators fire streams of one type of atom at another type of atom. The kinetic energy is enough overcome the repulsive forces, and smash the nuclei together, creating new elements. It is nuclear fusion, not chemistry, so while you can't change an element through chemistry, you can through physics." ]
Why does licking your lips make them dry out?	[ "Moisture is kept in your skin by a thin layer of oil. This includes the skin on your lips. When you lick your lips, it wipes away those oils, allowing water to evaporate from the skin, causing them to dry out." ]
From a biological standpoint, what is happening to these guys?	[ "They're faking it.\n\nThis will make you light headed and dizzy, but it won't make you hallucinate. You can achieve the same thing by huffing co2, and it's because the buildup of c02 in your blood. (You said oxygen deprivation, close enough, but you don't actually feel that, when you're drowning or something, wha...
How do corporations and wealthy individuals minimise their tax? Can a 'regular joe' use the same techniques?	[ "Others have given you an answer, but not very good, concise answers... \n\nEveryone can, and does, minimize their taxes. A great many individuals donate cars, clothes, etc, and take those donations as deductions against their taxes; that is tax avoidance, just the same as companies do. \n\nThe difference is that...
Why do people have favourite colours, and for what reason is my favourite colour different to someone else's?	[ "personal aesthetics are a complex issue. why one person likes a song or color or food is not really explainable other than that it happens to be what they like. sometimes people have a reason for liking a color. \"i like red because fire trucks\" \"i like blue because ocean\" but for a lot of people it is \"just b...
Why is Indian food so spicy? why people in hot climates tend to eat spicy food?	[ "Spicy food in hot climates causes you to sweat, which, ironically, causes your body to feel cool.\n\nSpice was never used to cover the smell of old meat. If you were wealthy enough to afford spices, you can bet you weren't eating old meat. Besides, spices were too valuable to just dump on meat. What little you had...
How do Bionic limbs function?	[ "The go to way is to take a bunch of sensor units, attach them to whatever muscles are left in the stump, and convert their muscle movements into electric signals. \n\nThese signals are then used for rather rudimentary commands. Hand prostheses for example are either \"pull to open\" or \"pull to close\". If you do...
Jupiters Great Red Spot and why it has lasted for such a long time?	[ "Jupiter's Great Red Spot has been around for as long as we've been able to SEE Jupiter with the first telescopes. Some of the main reasons its lasted for so long include the fact that Jupiter is a ball of gas that slowly becomes denser as you descent into it. There are no mountains to collide into or plains to dis...
Why do most single-vitamin supplements cost the same amount as a multivitamin containing the the same vitamin, plus many more?	[ "My best guess is that 90% of costs is in the manufacture of product, packaging, and distribution. The cost of vitamins raw materials are very very minimal." ]
Chrysler is currently requesting a subsidy from Canadian federal and provincial governments in return for expanding investment. Why do profitable private corporations need government subsidies?	[ "Chrysler: We need a new factory, we could put in in Mexico, or we could put it in Canada....Mexico is cheaper...\n\nCanada: Here's some money, pick me! Pick me!\n\nChrysler: Well, if were to put a factory in Canada, we could put in in Quebec, or we could put in in Ontario...Quebec is...\n\nOntario: Here's some ...
What does the US spend tax money on? How does it compare to other countries?	[ "First, some perspective. The total budget of Canada is 279.2 Billion Canadian dollars (249 Billion US Dollars). The US budget is 3.77 Trillion US Dollars. In other words, the US budget is more than 13 times the size of Canada's budget.\n\nThe US spends more discretionary money (more on this in a second) on the Dep...
How is mandatory overtime legal?	[ "The U.S. Fair Labor Standards Act does not limit the number of hours someone can work in general. There may be state laws ( [here is an example](_URL_0_) ) or occupation-specific laws (e.g. the number of hours an over-the-road truck driver may work) that do. The FLSA only requires time-and-a-half pay for hours w...
If Amazon is estimated to be worth $175bl, why don't they choose to undercut Netflix on service and movie selection? What is stopping Amazon from outdoing Netflix for streaming?	[ "Could Amazon do this? Sure, with enough money they could, though it would be a significant amount of money. Amazon is worth a lot of money not because it's sitting on huge reserves of cash, but because they have very high revenues and own a fair bit of land and facilities that make them a lot of money.\n\nIn other...
Who keeps maps up to date?	[ "Google, and other mapping companies, of course have a group of workers to update their own maps system, but there is no way a small group of either can keep up, so that's why users can report bad/missing data. \n \nGoogle also has Map Maker, where people, like myself, can contribute to add and review roads, busin...
What authority permits the US National Guard to be deployed overseas?	[ "Article 1, Section 8 of the U.S. Constitution (the Militia Clause) also authorizes use of the National Guard under continuing state control but in the service of the federal government to \"execute the laws of the Union, suppress insurrections and repel invasions.\"\n\nThe premise behind the national guard is that...
How come we never taught birds of prey to fish for us?	[ "We do. Chinese fisherman have been using comorants to fish for thousand years.\n\nBut it's highly inefficient compared to netting." ]
Cancer , how does it attack the body , and why haven't we found a cure yet ?	[ "Cancer is when a part of your body grows uncontrollably. Normally the result is piece of your body that doesn't actually do what it should (the super growth part, often just flesh not functioning stuff like an extra heart or lung) called a tumor. \n\nThere are LOTS of different cancers because \"uncontrolled gro...
Why do need to be taught to lift with our legs and not our back? Is lifting with our back a learned behaviour that we need to unlearn?	[ "Upright standing is a very recent condition for humans on an evolutionary timescale. Our spine isn't that much different from our primate ancestors, who had horizontal backs, and therefore adapted to carry weight in a very different way. This is the root cause of most of our back problems. However, our instincts h...
How do credit repair agencies work?	[ "Working for a credit union and fixing people's credit daily I can tell you this. Almost every credit repair company / site / expert is a waste of your time and money. There is a reason they are numerous. They mostly exist as a paid Googler. And they run a hard pull on your credit on top of that. \n\nMost of these ...
what is the purpose of the US Congress forming a committee specifically targeting ISPs and the migration to IPv6?	[ "Committees are used to study a specific issue, and draft the first forms of a bill before they open up to general voting/debate. They are specifically targeting the issues of ISPs because of the FCC choosing to get rid of Net Neutrality." ]
- How can you make a profit on a tuna or bluefin when buyers bid up to $1 million for one fish?	[ "If you were a millionaire, how much would you pay to eat just a meal of a species you know is about to become extinct? If money were no object and somebody offered you a bit of dodo, what would you pay?\n\nThere's a cachet to it, even if it's a bit abhorrent to most people.\n\nSo you have 200kgs or more of fish. Y...
How does our body read data (genes)	[ "Genes are made up of sequences of four different types of bases: A, T, G, C. You may have heard that DNA comes in two strands, the double helix. One strand binds to the other strand through matching up bases to their \"complementary base\" on the other strand. An A on strand will bind to a T on the other, G to C, ...
Do water pressure valves actually reduce water consumption?	[ "Depends on the application. Probably works in the shower if you don't change how long you shower.\n\nBut for static uses like your toilet, it will just take longer for it to fill. Its still using the same amount of water.\n\nPeople used to stick a brick or something in the tank to reduce the amount of water it u...
Why is it on hot days, I can stick my hand out a car window while driving and feel a cool breeze?	[ "The air outside the car isn't at 100% relative humidity. There's room for it to absorb more water by evaporation. So as you stick your sweaty disgusting paw out your window, the water on your nasty mitts gets evaporated quickly as it is exposed to a great deal of air in a hurry.\n\nEvaporation causes cooling, so...
Why is Google not providing external sd card support for the nexus, moto g etc?	[ "Google Drive. If you don't have local storage that gives you more incentive to put your files in Google's cloud." ]
Why is the Lion so widely used in European Heraldy even though they are mostly found in Africa?	[ "Well, the dragon is used a lot too, even though it's found... no where.\n\nIt isn't about the actual, physical representation of the animal. It's about the symbolism and ideas it represents. Europeans thought of the Lion as \"king of the jungle.\" A powerful, noble animal at the top of its food chain. There really...
Why did we Americans name our sport "Football" when there was already a sport called that with entirely different rules?	[ "Because your premise is faulty. There is no single game whose English name is \"football\". Football is a category of games played on foot and using a ball (in opposition to something like polo that uses a ball but is played on horseback). Games within the football category include Association Football, American/...
Why drones are so prevalent right now. What tech breakthrough occurred to make them so common and versatile all of a sudden?	[ "Probably the driving factor was the reduction in the price of accurate gyroscopes, which keep the drones oriented correctly." ]
How does the Fight Club "soap-bomb" work? Is it really possible?	[ "In the movie it was a fake way to make explosives but in the book it described a real way to do it. They changed it in the movie adaptation to keep peele from actually doing it", "You could use the glycerin from soap as one of the building blocks to making dynamite. Homemade dynamite is unbelievably dangerous &...
Is sleeping with "one eye open" possible. Could your vision work while you're fast asleep?	[ "No, that's just an expression. \n\nYou can't literally do this. The expression means to sleep lightly and while some people might be able to semi-consciously sleep \"lighter\" on some occasions, most people have no control over that. \n\nInterestingly, some animals (like dolphins) only have half of their brain s...
My six year old daughter just asked what's beyond the edge of outer-space. I have no idea how to answer. Help?	[ "A common misconception is that the universe is like a bubble or a balloon, this is due to the somewhat related analogies such as \"The universe is expanding!\" and so we think to ourselves, \"Well, it must be expanding into something!\" Or that we live in the world, which is in space, so \"Space must be inside so...
Can smoking related diseases be noticed before becoming full blown?	[ "This is a tricky one. \n\nI guess it depends what you mean by noticed. \n\nLet me preface this by saying it seems any consumption of cigarettes causes an effect on body tissues. It is noxious and causes a response. \n\nThe end diseases we associate with smoking, at least personally, are emphysema, lung cancer, and...
e^i*pi + 1 = 0	[ "This is a special case of Eulier's formula:\n\ne^ix = cos(x) + i*sin(x)\n\nBecause sin(pi) = 0 the imaginary component disappears and you're left with cos(pi) = -1; adding 1 gets you to zero.\n\nIt's a mathematical coincidence but a pretty cool one.\n\n_URL_0_", "Let's pretend that sin is a polynomial function (...
What defines something as edible or inedible? How is this determined?	[ "Can you eat it and not die, get sick, or gain some nutritional or functional benefit? Then it's edible. \n\nPlastic isn't edible because you can't absorb nutrients from it or use it as food for long.\n\nmercury isn't edible because you'd die pretty quickly from mercury poisoning. \n\nBread is edible because you ca...
Why would a company sell stock and buy it straight back?	[ "Sell when it's high, stockholders may start selling too which can bring down stock price, buy it all back again. Profit.", "To realize a loss which lowers the tax burden.\n\nLet's say you buy a share of stock for $100. It drops in value initially, but you believe their product is the best product ever and it wi...
Why can you replace only the glass in some phones and you have to replace the full display on others?	[ "On some phones, the screen is bonded (glued) to the glass. This was done supposedly to achieve a clearer image, having less material and an air gap between the top surface and the display. \n\nSo rather than use a heat gun to carefully separate the screen from the glass (and put it back together with the same qu...
What is the process they use to teach deafblind individuals, like Helen Keller, to read and write?	[ "Well, first they have to learn how to communicate in some nontrivial way (i.e. communication more involved than simple things like pushing and pulling). Once they have learned some such way, learning another such way (such as Braille) is a straightforward (if difficult) process - they can then have the new system...
if you need yogurt to make yogurt, how was the first ever yogurt made?	[ "You don't actually need yogurt to make yogurt. The acidophilus bacteria needed to make it occur in the stomach linings of most young mammals. Cheese and yogurt could be made by accident if you carry milk in a bag made from a lamb, calf, or kid stomach and bump it around in the hot sun. Please don't try though!"...
Why does a refrigerated can of juice take so long to return to room temperature after it has been removed from the refrigerator?	[ "There are no stupid questions. Only stupid people.", "It doesn't take long at all.\n\nIt takes just as much time as it's supposed to.\n\nHow are the cans situated? If they are bunched together the outer ones will insulate the inner ones.\n\nIf they are in a row with gaps in between, they will warm faster, but th...
What stops someone from opening the emergency exit on a plane?	[ "Their feeble human muscles. \n\nDoors on jets are designed so that they have to open inward before they swing outward. That means that to open them, you have to be strong enough to overcome not just the weight of the door, but also the difference between the pressurized atmosphere inside the plane and the low pre...
How come all these amazing breakthroughs I see in articals such as cancer treatments and battery advancements just seem to disappear and never to be heard from again	[ "Because by adding the phrase 'amazing breakthrough' to an article, they've made you more likely to read it. But in most cases the article either describes an idea someone had that may or may not work and hasn't been tested yet, or a single step in the right direction on a path with millions of steps to go before t...
Why do little kids elongate words (such as drinky, milky, nappy, etc) when you would think its easier to just say one syllable?	[ "It comes from parents usually. The parents use it as it's been shown to help kids learn, specifically the repetition. Parents probably won't say \"milky\", they'll say \"milky milk\", it helps little kids learn easier. From that the kids shorten it to just \"milky\" since that's the first word." ]
Why is it so much more expensive to send texts and make phone calls internationally?	[ "The string that ties your tin cans together gets really expensive when you get further away.\n\nIn reality, because they can.", "* 1. because they can -- goods are often priced at what people think it is worth, not a fixed markup. \n * 2. A call may have go through several different networks to reach its destina...
What makes it frowned upon for OPs to respond to their own post?	[ "The interwebs culture views it as spammy. Use an edit to your original post instead. After someone replies to your OP then it is OK to respond with one new post." ]
How do tribute bands not have to pay royalties?	[ "Tribute bands that play only at venues that have contract with a licensing agency (such as BMI or ASCAP) are covered by that for licensing. Or, a really popular tribute band may have directly handled the licensing. Many cover bands, however, are performing illegally, and just hoping not to get caught. A small bar ...
Difference between bisexuality and pansexuality.	[ "Seems to me that the difference is very nuanced. Bisexual means being attracted to both males and females, while pansexual means being attracted to any human, the difference being that transgendered or in between gender people or whatever are included on the pansexual menu while they are not specifically included ...
If California is running out of water, why do we continue to allow industrial agriculture to continue creating more and more water sucking farms to turn a profit and ship goods out of state?	[ "It's not obvious to me that there is actually a trend of new farms sprouting up. The place to look would be [USDA statistics]\n(_URL_0_). We don't have the numbers since the drought, ie the difference between 2014 and 2015 yet. If this is really going on, it doesn't look to me like part of a long-term trend: there...
How did racism begin if no one is born/inherently racist?	[ "Humans are immensely tribal in nature. We are comfortable in our own groups and hostile to people from outside our groups, because we don't know if they can be trusted. So, it's probably a more accurate statement to say that people are by nature xenophobic, and all sorts of hostility arises from that. Skin color i...
The difference between all of the programming languages, and what they are used for.	[ "There's a lot of languages (literally thousands - there's at least a few dozen in regular use), explaining all the little differences is beyond the scope of an ELI5. In short, when you're designing & implementing a programming language, there's going to be trade offs. The biggest one is between how easy the ...
Explain Evolution Like I'm Five	[ "When anything is born, it is not the same as the thing it came from. You are not just like your mother, but you have some similar things- maybe your eyes are the same color, for example. Some things you get from your parents, and some things you get from living- like when you get tanned by the sun when you go outs...
How does your body remain its form and know when to stop growing?	[ "It sounds like someone found Reddit as an easy way to answer some Biology essay questions...", "I can't answer all of your questions, but the reason we have a defined form is a process called Apoptosis, or \"Programmed Cell Death\". It's a process whereby cells actively Stop growing in certain ways to define sha...
why prostitution isn't legal.	[ "The modern argument typically revolves around the kind of activities that surround prostitution, (eg. human trafficking, violence, drug use). and that legalizing it could be viewed as condoning the associated activity.", "Because it was viewed as immoral. The idea that we should not make things illegal just beca...
If a mother is vaccinated against a disease, why doesn't her child get that immunity in utero?	[ "They do, actually, but only in some cases.\n\nWhen a person gets vaccinated, they produce antibodies (or, as scientists say, immunogloblins) against an organism. Antibodies are proteins, and they come in many flavors. IgG and IgA are two types that can cross the placenta, but IgM can't (these are just acronyms for...
Why does your throat get so sore when you're sick, regardless if you have a cough or not?	[ "Most sore throats come from the irritation of your sinuses draining, not from coughing.", "It's drainage from you nose, it can irritate your throat." ]
How does wireless phone charging work?	[ "Electromagnetism. \n\nWhen electricity flows through a wire, it generates a magnetic field perpendicular to the wire. Basically to create a wireless charging system, you reverse the process: create a magnetic field that induces electric flow in the wireless charger on your phone and that electrical flow charges...

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