Subset (10)

eli5 · 25k rows

Split (1)

train · 25k rows

query stringlengths 20 300	positive listlengths 1 1	negative listlengths 1 1
what happens to food/drink that "goes down the wrong pipe?"	[ "Generally speaking, its gets coughed out. Air that goes to your stomach just gets burped out eventually. Any good or liquid that heads into your lungs is going to cause a massive coughing fit as it goes down. Occasionally it can win past the coughing, a very small amount wont do anything significant, a larger am...	[ "They don't. If you think back to your basic biology you will note that the bladder is not connected to the digestive system at all; the kidneys extract fluids from the blood in order to produce urine. The solids and liquids are passed from the stomach into the intestines which absorb the desired substances into th...
Why does there seem to be a greater variation of height in women and it doesn't affect their attractiveness as much as men?	[ "Height, by societal and evolutionary standards, is related to one’s masculinity. This makes taller men more appealing to women. Femininity, on the other hand, is not greatly affected by one’s height. I’m not saying that this is the way we SHOULD think, but it’s the way that most people do when choosing a partner o...	[ "Same reason a trumpet sounds like a trumpet, a saxophone like a saxophone, and a flute like a flute. The different shapes of the interiors allow for different patterns of soundwaves, creating different \"voices.\" Same principle with humans: the physical structure of everyone's vocal chords is slightly different. ...
why audiophile-grade equipment is so damn expensive?	[ "Key reasons are: * It's a luxury product so it's more attractive to buyers the more expensive it gets (this is the key reason). * Much of it is hand made which adds to the cost of production * It's generally made in low volumes, so if the cost of designing is the same as a mass market product the fixed costs are s...	[ "Your question reminded me of this frikkin awesome documentary of about planned obsolescence. [Video snippet](_URL_0_), and the whole documentary, I can't find... but Im sure someone else may be able to. ELI5 version: Because companies want you to keep them in business." ]
How would historians deal with an accusation of an event or illness but no direct evidence?/How do historians evaluate silence?	[ "Evaluate the alleged events causes and affects. Even if the event cannot be directly accounted for, a chain of causation can reveal the validity. For instance, take the Dancing Plague of 1518. While the case seems absurd (a village dancing itself to death), the village bread has been linked to ergot (a mold that c...	[ "Hi - we as mods have approved this thread, because while this is a homework question, it is asking for clarification or resources, rather than the answer itself, which is fine according to [our rules](_URL_1_). This policy is further explained in this [Rules Roundtable thread](_URL_3_) and this [META Thread](_URL_...
Why does Apple limit the buyer's ability to customize?	[ "Apple's main brand theme is \"it just works\" one of the big reasons for that is they control hardware and software, and using a limited number of options means all options can be rigorously tested. Microsoft (computers) and Google/Android (phones) release software and allow hardware vendors to choose hardware to...	[ "That's exactly what patents are for. You have to show how it is unique. A patent needs to have a description to go along with it. There are innumerable patents for things that don't exist (and probably can never exist)." ]
Does a surplus of calories help with healing?	[ "Some searches: _URL_1_ Study suggests patients with less than 25% of recommended caloric intake are more likely to develop bloodstream infections originating from their hospital stays. _URL_2_ Correlation between malnutrition and hospital stay length _URL_0_ Might have some answers you're looking for. The opening ...	[ "Like many mammals, people have instincts to groom themselves to maintain health and attract mates. Part of our grooming instinct is to remove parasites, like ticks or lice. These bugs are not a common problem for many modern people (unless you live below the poverty line, or enjoy the outdoors in certain places). ...
Why is there a hole in the Bremen City Hall?	[ "Can you post some kind of image for context?" ]	[ "You did not read it correctly. The article only refers to one section of Krakow in this way. It really was designed to be a sort of ideal city. _URL_0_" ]
Why don't we have bones that cover and protect our abdomen?	[ "If there were bones there would be no room for expansion of the uterus to house a baby - and since men and women follow the same basic template of growth it wouldn't exactly work. It would also really inhibit movement of the torso. We wouldn't be able to do half the things we need(ed) to do to survive." ]	[ "When you open an egg, have you ever noticed how the white stuff (albumin) has it's own shape even though it's not quite as pronounced as the yolk? That's because the albumin is almost a matrix (3D net) of proteins. These proteins provide make it \"goopy\" and actually quite impenetrable by the just-as-soft yolk. S...
Why are some web browsers (chrome, firefox) superior to others (internet explorer)?	[ "IE doesn't read Internet code (HTML) correctly most times. As a result, it often messes up webpages. Web designers often code an entire website, and then do a separate code so that IE will read it correctly. It's also extremely slow, full of bugs, and because of that, it has a really bad (and deserved) reputation....	[ "Some parameters that might be different: * Brightness. A TV that's not bright enough will be difficult to watch in brightly lit environments, like a sunlit room. * Contrast. The difference between the brightest and darkest color the TV can display. Higher contrast means deeper blacks and brighter whites. * Color r...
Why shouldn't you put out a grease fire with water?	[ "Well, part of it is just that water displaces grease instead of mixing with it, so the result is that it splashes grease everywhere instead of putting out the fire. In addition to that, the water turns into vapor from the heat of the fire, and expands rapidly, slinging more grease outwards in smaller particles. Be...	[ "We're not supposed to use our phones at gas stations?" ]
Why do many languages have grammatical genders?	[ "There really isn't a huge rhyme or reason to language rules, they usually just kind of happen. In French the gender of a word can usually be discerned by its ending. I don't know all of them off the top of my head, but you should be able to find or make a list based on what you know." ]	[ "There has been. Esperanto was designed after World War 2 to reduce the possibility of war due to miscommunication." ]
Why does white noise calm people down?	[ "When it's quiet, your body reacts to every noise with a \"what's that?\" response which makes you perk up and be alert. By drowning out the sounds with white noise, you don't have that effect as often and your body has a chance to relax." ]	[ "They actually debunked that, same with that nonsense about listening to classical music in the womb making your child smarter. It was all just BS to sell some cds. I'll see if I can find an article about it, and I'll edit this to put it in. And now to see if this answer is long enough, or if it will get auto-modd...
Why did Aristotle believe that the "sea past the pillars is shallow and muddy and located within a hollow" Greeks as far back as 550BC would've had contact with Phoenicians who had colonies outside Gibraltar.	[ "One possible reason is that the Phoenicians and Carthaginians jealously guarded the secrets about their trade routes, especially from their Greek rivals. They even went so far as to insinuate that there were nothing but sea monsters beyond the Pillars to try and discourage the Greeks. Moreover, one Carthaginian ca...	[ "Ohkay, grossly simplified version: The Jewish state of Israel was created in the aftermath of WWII, effectively giving the Jews their own country. The Palestinians who got kicked out as a result are not happy. The Arab states are not happy with their new neighbor. This animosity continues on into present day, with...
How do they make a liquid bleach 'splashless'?	[ "The liquid probably has a thickener in it so it won't splash as easily. (and not at all if you are pouring it into water)" ]	[ "With some difficulty. This was an issue in the Apollo 11 landing. Neil Armstrong had to send a message back about slosh in the descent engine tanks, and the Apollo 12 descent stage was modified as a result. But in a launch, the tanks are tall and narrow. They start off full and there is little side to side motion ...
What is the earliest recorded history of humans keeping pets around? What was their primary purpose?	[ "What do you mean by \"pets\"? Animal domestication predates all written history, so by the time \"history\" started humans already had livestock for food and labor, dogs for guarding, hunting, herding, etc." ]	[ "As a reminder, [top-level answers](_URL_0_) in this community need to be \"comprehensive and imformative.\" Single-links to Wikipedia and unsourced opinions do not clear that bar. This question already rests on a part of history hamstrung by the fuzzy diagnostics of diseases in the past and an almost unavoidable b...
Why does milk make your sinuses more congested when you've got a cold?	[ "I don't have the source in front of me, but recalling from memory it is: It doesn't increase the volume of mucus. But a protein found in dairy bonds with (or possibly gets caught in) mucus and makes it feel more substantial. It goes from a fairly runny texture to a slightly thicker, sticky texture which makes you ...	[ "The flavor of the toothpaste has nothing to do with the change in taste of the OJ. Most toothpaste has Sodium lauryl Sulfate in it [or something similar] to give the toothpaste its \"frothiness\". The downside to this chemical is that it blocks your sweet taste buds. So without the sweet taste buds tasting the sug...
Why do I get goosebumps when listening to a particular moving piece of music?	[ "_URL_11_ _URL_9_ _URL_20_ _URL_16_ _URL_15_ _URL_19_ _URL_14_ _URL_13_ _URL_6_ _URL_8_ _URL_5_ _URL_1_ _URL_4_ _URL_3_ _URL_0_ _URL_10_ _URL_7_ _URL_17_ _URL_12_ _URL_2_ _URL_18_" ]	[ "Imagine every time you eat something, a large burly man appears in front of you and dances a burlesque routine. Without fail, this goes on for several years. Soon you fail to even think that this rotund mustachioed man is anything out of the ordinary. After all, every time you even begin to take a bite of somethin...
How do cars not overheat when they cook outside in California/Miami/Texas heat for hours?	[ "Running temp for an engine is usually around 195 degrees. Even the hottest of summer days does not approach that." ]	[ "Speculative, as I know of no scientific study on the subject, but I am an electronics technician and electronic warfare specialist who works with various radio and radar equipment. It's possible that the angle of your radio station relative to the freeway (and thus overpasses) is such that just as you go through t...
Why is the human iris so colorful?	[ "For the eye to work, light can only enter the pupil - the hole at the center of the iris. The color of the iris serves to block light from entering. Now, the reason the colors vary is harder to answer. As far as I can find, there is no environmental advantage to any one color. A combination of genes, the amount o...	[ "Light travels at different speeds through different mediums, and as the density of the mediums vary. The air is being heated at different rates between you and the horizon creating different air densities, like ripples on the surface of a river. Light from the horizon refracts as is passes through the different bo...
What is the evolutionary/biological reason for reptiles to be cold blooded?	[ "It's much more economic to regulate your temperature with outside sources of heat, instead of generating it yourself. Reptiles don't spend as much energy maintaining their temperature, which means they're often able to go much longer without eating, for instance. But it's a tradeoff. Mammals have to burn more calo...	[ "very simple, Air is a horrible transfer medium for energy, Water is a good tranfter medium for energy. It takes longer for the energy in the air to flow to the ice cube then the energy in the water to flow in the ice cube, When when there is steam in the air, its still maybe 50% humidity compared to 100% humidity...
How does wind happen and what determines gusts and various speeds in different geographical locations?	[ "Wind happens because of differences in atmospheric pressure - things seek to equalize themselves so that air from high pressure area tries to flow to low pressure areas to equalize things. Air moves all the time, e.g., due to temperature differences and the rising of warmer air. The earth's rotation also causes m...	[ "[From the bottom of that article:](_URL_0_) Why are there differences in processing times among regions and offices? Visa offices face different challenges operating in different countries and regions, and even in different offices within the same region. Various factors can affect the time it takes to process...
Time Travel question	[ "So one person leaves the Earth's gravity well and travels with some speed to a different gravity well and then returns at some speed? Different times. Some nerd from Stanford can say how different but you have to give him or her a speed." ]	[ "I think you've got something. Sort of like how even in the first movie the 1985 Doc knew that Marty was going to go meet him in 1955." ]
I just learned how cosmic rays are primarily (positively charged) protons and atomic nuclei. How is their charge balanced?	[ "We think [cosmic rays are generated in supernovas](_URL_1_) by shock waves. My understanding is that there are similar amounts of positive and negative particles generated initially, with similar velocities. But the electrons are screened out by [inverse compton scattering](_URL_2_). Basically, the electrons can b...	[ "I think people come to that interpretation due to Feynman diagrams since, in them, an antiparticle is pictorially represented as a line with an arrow going in the negative direction on the time axis. However, Feynman diagrams are in part just pictures to help one understand processes occurring and don't necessari...
Do plastic water bottles leech toxins from the plastic into the water?	[ "Most plastic bottles leach some chemicals into the water or other food/liquid in them. This is why there was a big uproar to replace BPA in plastic bottles since it was found to leach chemicals which mimic estrogen. The new BPA-free plastics don't seem to be much better. Here is a story from NPR - > _URL_0_ There...	[ "California has really strict laws. The exact wording is just to comply with a particular labeling law required by the state. And since it makes sense to give the same products to California that you give to the rest of the US, it's common for many products to have the warning printed on the label. Realistically, t...
Why do different types of alcoholic drinks appear to affect the same person differently?	[ "The placebo effect, and confirmation bias. Imagine you have an item you feel is lucky that you bring to a baseball game. You generally feel \"hey, if I have this, I'll hit better.\" Subconsciously, you will apply yourself more, as well, because of the added confidence. Usually. Alcohols can affect people similarly...	[ "There is more air between the you and the Sun. The more air the light has to go through, the higher the chance that some of that light will interact in a way which causes it to deflect or be absorbed. Also, the shorter the wavelength (closer to violet in the rainbow) the higher the chance that this will happen. Wh...
How thin does a film have to be to cause thin film interference?	[ "1/4 up to a couple multiples of the wavelengths of visible light. Visible light is about 400-800nm, so anything down to 100nm thick and up to approximately 1600nm = 1.6um thick. As it gets thicker than that you still get interference between light reflecting off the upper and lower surfaces, but multiple colours w...	[ "Some very back-of-the-envelope math follows: This is a really interesting question. Day-to-day weather at the mid-latitudes is generally dictated by the ridges and troughs of Rossby waves moving west-to-east. While our atmosphere is strongly non-linear, wavenumber 6 - i.e. six waves packed around the globe - is o...
Wednesday What's New in History \| August 31, 2016	[ "Chilis and papayas in Florida, 2000 years ago! This is more \"new to me\" since I missed out on the papers that discussed this a few years ago. Luckily I plundered into a casual reference to it last week. It's good evidence for early interactions between people in the Caribbean (who came up from South America) and...	[ "Hi everyone. Since this is the kind of question that can attract non-expert responses, just a friendly reminder that all responses must comply with [sub rules](_URL_0_), and that [personal anecdotes](_URL_1_) are explicitly not permitted in /r/AskHistorians." ]
Why does San Andreas feel bigger than GTA4 and GTA5, when it's actually smaller.	[ "One big reason is map design. No road that goes north is straight. They are all designed to be curvy. This gives the impression that the map is larger because it takes longer to traverse." ]	[ "Simply put for the same reason drinking water when you're not thirsty isn't as refreshing as when you're REALLY thirsty. Anticipating the bodies' needs doesn't trigger the same reward responses in the brain as fulfilling a need that is already present. Your muscles don't NEED to stretch right now, so you can't ant...
Why do we have toll booths when driving through states and such? Is it just an easy way for them to get tax money?	[ "Toll roads are highways that pay for themselves. They're often used by drive-through states (like Kansas) that have people from other states use their highways but not spend money in their state to generate revenue to keep the highways cared for." ]	[ "There are many tools that have been used historically. The people using them are called surveyors. There's one called a level that can be used to find the elevation of terrain. There's a theodolite that is used to measure vertical and horizontal angles between sighted points. But mainly today they use advanced mac...
Can we predict IR spectroscopy bands?	[ "So I'm sure that the fine details are much more complicated but at a very base level, yes. We can model the bonds as a springs, and we get our nice harmonic oscillator equations. The absorption is based on the energy changes and with harmonic oscillators all the gaps are the same size, so we can get a good guess ...	[ "We use spectography. Each element absorbs particular colors, so when we see those colors deleted from an otherwise smooth spectrum, we can figure out what they're made of. In the case of." ]
If Apple is a significantly more valuable company than Microsoft, why did Bill Gates seemingly have a lot higher of a net worth than Steve jobs ever did?	[ "Bill Gates owns much more than just Microsoft. He owns a big chunk of Berkshire Hathaway, parts of Costco, McDonald's, etc etc. He didn't just take his piece of Microsoft and relax, he aggressively kept investing and continued to build his wealth" ]	[ "Depends on the country. Some countries have laws in place that ensure equal service for all providers using the same network, i.e. the network owner aren't allowed to diminish the service in any way for providers who \"rent\" their network. As for your particular example, they're both owned by the same corporation...
Why is the Vietnam War considered such a failure?	[ "From an American view, we lost 58,220 troops, another 303,644 wounded. The south Vietnamese government we were supporting lost the war, and the northern Vietnamese government we were opposing took control of Vietnam. Many of our wounded ended up having a lot of physical and mental problems because of the war exper...	[ "One thing to point out is the terrain. Iraq is in the populous parts of the country pretty flat, with a semi good road network across the country making it easy to move people around, and larger cities and towns to organize around. Afghanistan is some of the most inhospitable terrain on earth. With little nation...
Why are Hospitals almost always religiously affiliated?	[ "Many of them were founded by churches as a form of charity. There are certainly plenty in the modern day that have no direct religious affiliation, especially those connected to universities." ]	[ "\"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..." ]
why are prions so resistant to "sterilization?	[ "The prions form tightly packed beta sheets that make up amyloid plaque structures, which are insoluble and resistant to denaturation. I'd say it's the H-bonding between the strands in the beta sheets that imparts the stability of the structure." ]	[ "Whenever you hear that something kills cancer in research / in a petri dish... just remember that a gun kills cancer in a petri dish, too. Often times the most promising ground-breaking research doesn't pan out farther down the line when they start trying to apply it to full grown humans. Maybe it breaks down in ...
Aren't bows and arrows vastly superior to powder rifles in terms of accuracy, range, and rate of fire? Are there other reasons why rifles were widely adopted?	[ "A good archer is far more dangerous in most regards than a pre-modern rifleman, but a good archer is the accumulation of years of training and in many cases the result of an entire culture or sub-culture. Nomadic steppe tribes often used the bow as a way of life since they were children and were expert archers, sa...	[ "Your question is like: > Why do people keep telling me to take a pill my doctor prescribes when in ye olden days people didn't have access to the same pills? Clean water is way easier to get now than it was then. Since you have access to clean water you should use it. In the same way, getting a doctor to prescri...
Where does microphone feedback come from?	[ "So it is a [feedback](_URL_1_) mechanism. The microphone picks up ambient noise and feeds it through an amplifier to the speakers. Then the speakers reproduce a filtered version of this noise. Typically microphones are more sensitive to [specific high frequencies](_URL_0_), so these frequencies get more amplified ...	[ "Interference. You can stop it by using a hard-wired connection instead of wireless. Failing that, reposition your wireless access point or your microwave." ]
How do bugs’ legs stick and unstick to everything?	[ "This is going to sound a bit silly but it is true. Insects and other “bugs” have small claws on the ends of their legs. They are light enough that those claws holding on to the tiniest imperfection in the surface is enough to hold them up." ]	[ "I don't think \"sticky\" is something that has a precise meaning in chemistry. I think what it comes down to is the relative strength and balance of many types of [intermolecular forces](_URL_1_) that are at play. Take honey for example. It has lots of carbohydrate molecules like [fructose](_URL_0_). This molecule...
Why do we have one massive India instead of 10 - 12 separate nations?	[ "Because that's what the British decided. And I mean, they did decide to split British India into three countries, Pakistan (including East Pakistan), India, and Burma/Myanmar. Later East Pakistan became Bangladesh, since they decided it was a little silly to be two halves of a country a few hundred miles away. The...	[ "They tried. Many states had extensive land claims in the west - Connecticut claimed a band of territory bypassing New York and stretching to the Pacific, and sent settlers to what is now Pennsylvania's Wyoming valley and the area around Cleveland in Ohio. Massachusetts made a similar claim to portions of Michigan ...
Is it better to be layered with loose warm layers or tight fitting layers on a cold day?	[ "It's all about air. Air is a poor thermal conductor. You want the air to not be moving. That means trapped pockets or layers of air, and little or no airflow between the air trapped in your clothes and the outside air. However, I think your premise is flawed, as that depends on the materials moreso than on the vol...	[ "When you close the door, a bunch of air is displaced, and it has to go somewhere. If you don't have a window open, the only place the air can go is to rush out the door gap as you're closing it. This is difficult to do, and so the air forms a higher pressure \"cushion\" which prevents the door from closing as hard...
Why do manufacturers print the various ink colors used in the packaging on the bottom?	[ "Graphic designer here. It's for the printer sake. So he can measure that every individual color is printing correctly. You might also find a small cross hair next to the colors, that is to make sure the colors are lined up with each other. As every color is printed in it's own printing press, a cross hair of every...	[ "Not sure but I've seen them pressed more often when I order for multiple people. I think it's just a shorthand so the customer knows which drink is which and which box has which burger. So when my mom orders for me and my sister and herself she can easily give my me coke, my sister her root beer, etc.." ]
I have never seen a depiction of a native American with male pattern baldness. Did it just not exist among the New World populations?	[ "This might be worth crossposting to /r/AskScience for their input on the genetics side of things." ]	[ "According to the series' [creator Michael Hirst](_URL_3_) & [stylist Dee Corcoran](_URL_1_), Ragnar's style was invented on the spot, when the actor arrived for shooting with shorter hair than expected. Solution: add extensions to the top & shave the rest off! You'll find comments in the linked interviews regardin...
Why does garbage bunch up in the ocean?	[ "Because of the rotating Earth's [Coriolis effect](_URL_0_), the surface of the ocean responds to wind in a funny way: it moves sideways to the wind direction: to the right of the wind in the northern hemisphere, to the left in the southern hemisphere. This is known as \"[Ekman flow](_URL_1_)\". In the tropics, t...	[ "How to you put all the matter in one spot and at the same time not condense it? That violates quantum mechanics." ]
Was appeasing Hitler really a mistake?	[ "You might also be interested in [this past post](_URL_0_ \"Was Neville Chamberlain's policy of appeasement really a mistake given the context? : AskHistorians\"), in which a user put the 1930s decisions in context with previous European diplomacy and assumptions while showing why they failed in the end." ]	[ "If you give a mouse a cookie, he's going to want a glass of milk. If you negotiate with terrorists, it feeds the cycle that people can manipulate you by being terrorists. Hence you get more terrorists." ]
Why does the Lars AMA have many downvotes?	[ "Lars Ulrich is the douchiest douche to ever douche." ]	[ "You know how people thought there's some angry god that throws lightning bolts when you do or don't do something? Well people are afraid of things they don't understand." ]
Why do TV news camera people carry around gigantic shoulder mounted cameras when there are so many smaller options?	[ "It's certainly be possible to make broadcast-quality cameras much smaller and lighter than those used by news crews, but there's not much point. Even a 1 inch sensor will have ample performance and the high-quality, high-ratio zooms required will be expensive but not very large. As long as you have a guy who's one...	[ "Confiscated drugs are supposed to be destroyed (in a fire), but there have been cases of police nicking stuff and keeping it for personal use, and also cases of them keeping stuff to plant on suspects. Seized cash goes into the police's budget, expensive items will be sold and the proceeds will also go into the po...
What cause a jet engine to "flame out"?	[ "Lack of fuel or air,(oxidizer) can cause a “flame out”. Which essentially is when combustion ceases. A lack of air, (oxidizer), can cause a “rich” fuel air ratio, allowing unused fuel to exit the tail pipe which can cause a visible flame." ]	[ "As a physicist, the thing that really made sense was to realise that lift is due to vortex binding, much like the Magnus effect, which is mathematically the same as a current in a uniform magnetic field. In other words, one should be able to understand this with the same mathematical machinery of potential flow (w...
I've seen the 'During WWI, Germany objected to the use of the shotguns by the Americans" countless times. How true is this?	[ "I've written about this previously [here](_URL_0_), but in short the protest happened, the US told them to shove it, and nothing came of it, although the war ended a month later in any case so it was somewhat moot." ]	[ "Yes. It was called the [Sprengel pump](_URL_0_). It actually worked extremely well and could create very high vacuums. The invention of the sprengel pump was actually what allowed Crookes to create the first cathode ray tubes which led to the discovery of x-rays. It also allowed Edison to create the first carbon f...
Why do bison in Eurasia live more north than bison in North America?	[ "Likely because after the went extinct in the wild in Europe they were only reintroduced in a small area, so that's where they live. In general, Western Europe is more temperate further north than North America because of the circulation of oceans and winds. But bison like all the way up to Alaska, so I don't think...	[ "> How does that happen with constant sunlight? Are the Sun's rays weaker due to the angle or something? Yes, the angle is the issue. Consider that there is a certain amount of energy per area of exposure to sunlight. Imagine a sheet of paper which is flat vs edge on to you. The more angled the sheet of paper is to...
Why are elephants so wrinkly?	[ "There's a mathematical concept called the square-cube law, which basically states that as you increase the size of a shape, the volume increases faster than the surface. So the larger an animal gets, the less skin it has per pound of meat. In warm-blooded animals, meat generates heat; and if you live in the desert...	[ "You mean like the ones you only notice when you're watching someone sleep really closely for hours on end? Don't know." ]
Why are so many flights disappearing lately?	[ "We haven't been \"losing planes left and right.\" It's happened like...what? Once? Twice? The media just hypes the hell out of it when it does happen, which creates the false impression that it's a common thing." ]	[ "What you're experiencing is localized, and not consistent with most of the rest of the US, as is evident by a few of the other comments. Take a look at these two charts: [june temps and rainfall compared to average](_URL_1_) The above trends were also consistent with what was seen in May and July (though in [May](...
Why is crossdressing as a sexual fetish rare in women ?	[ "Because wearing men's clothing has no real stigma to it in western culture. A woman can wear pants in public without any concern. Part of what makes crossdressing alluring for men is that element of risk, of subverting cultural norms. It's sexy because it's taboo. That hint of it being forbidden isn't there for wo...	[ "Really simple. Because the ticket sites can't afford the server power and high end technicians on something that only happens once in a blue moon." ]
How is Clorox Splashless Bleach actually splashless?	[ "It has a higher viscosity than the normal bleach solution. Even concentrated bleach is not 100% sodium hypochlorite (the \"bleach\" part of bleach): high strength concentrated bleach is 8.25%, the rest is water (and scent additives and so on). Exactly what chemicals in what concentration they added to get the visc...	[ "They don't make everything from scratch in each restaurant. Things are made in a factory and shipped to the stores, similar to how you'd buy a box of Mac and Cheese. Inside they have a packet of \"cheese\" powder. You make Mac and Cheese at home when you open the box and follow the instructions, but that doesn't m...
How come lots of metals have a grayish color?	[ "All metals have a color, but it's usually so purple that you can't even see it, so the metal looks gray." ]	[ "[In this case the 'light' is a combination of x-rays & extremely intense heat that caused the buildings the be discoloured](_URL_0_). When something ([like a person, if you're referring to the same photos I'm thinking of](_URL_1_)) blocks part of the wall, it prevents that area from being exposed to the heat, & th...
Why did modern man's ancestors migrate to cold climates from warm ones?	[ "Any area can only support a limited amount of population, after that its starvation or migration. Plus natural disasters make people move. Repeat. In most places it gets cold just very little over distance so the migration is very gradually." ]	[ "OP, you need to clarify: are you white, black, Native, or some class of immigrant? Rich or poor? Are you (presumably) free or are you a slave? How old are you? There are a lot of variables to \"a man,\" and most males wouldn't have fought at all." ]
Why do animation movies/shows credit a "cinematographer"? I thought these were drawn and made.	[ "A cinematographer is an artist who plans the angles; the perspectives in the shots which helps tells the story. It’s a major role in the visual storytelling. Think about a comic book and all the angles and perspectives the story is drawn from; that is what a cinematographer does." ]	[ "A stenographer does it. Just like in a court room or a deposition, a stenographer uses a stenograph to take shorthand. Every keystroke is either a word, a phrase, or a phonetic sound, so an experienced stenographer can keep up with whoever is talking." ]
If time was created by the big bang does that mean that the universe has always existed?	[ "You're right this is a philosophical question, and based on the way you phrased it, I am assuming you understand it perfectly. If there was nothing before the universe, then there was no point in time when the universe did not exist, so the universe always existed. This is more of an argument about the definition ...	[ "I encourage you to read David Deutsch's book The Fabric of Reality. The chapter on what time is (and isn't) will likely help you think about these things. It's worth the effort to read the book. (It is written for non-specialists who are willing to think.) Deutsch, by the way, is a theoretical physicist who has ...
Who named the quarks and why?	[ "Oddly enough wikipedia has an [entire section](_URL_5_) on quarks names and where they came from." ]	[ "> If they don't interact through Standard Model interactions, how can we ever directly observe them? We can observe them if that part of the Standard model is wrong. > And if we can't, how do we know that they exist? We don't know that they exist. If our everyday low-energy neutrinos are Majorana fermions, then t...
Why are cooked vegetables less nutritious than raw?	[ "There is no hard and fast rule about this. As for soup broth, it is a temperature activated chemical change, not some sort of separation of nutrient and food. Most experts agree that boiled or steamed veggies are the best way to go. Other cooking methods can increase the bio-availability of nutrients, but maybe DE...	[ "I think it's also important to consider how much power the large food corporations have. They provide research funding to help promote their own products which creates a lot of contradictory/confusing information out there. For example, some people who helped develop the government recommended food guide in Canada...
What Is an MLM ? Why is it bad ?	[ "Multi Level Marketing. Basically pyramid scam. For example tupperware parties, arbon, mary kay, isagenix, sentsy to name a few. Most will not make money." ]	[ "This CGP Grey video does a really good job of explaining it all. _URL_3_" ]
What is the ratio neutron stars vs black holes in the universe?	[ "We could estimate a number using the initial mass function (IMF). I will choose the Kroupa IMF and assume that any star from 8 to 25 solar masses forms a neutron star and over 25 forms a black hole until 150 solar masses [_URL_1_](_URL_2_) We have to integrate the initial mass function between 8 to 25 that woul...	[ "[Fisher's principle](_URL_0_). > - Suppose male births are less common than female. > - A newborn male then has better mating prospects than a newborn female, and therefore can expect to have more offspring. > - Therefore parents genetically disposed to produce males tend to have more than average numbers of gr...
What's wrong with high fructose corn syrup?	[ "It's more a problem with fructose in general. When your body absorbs sugar, it can do two things. It can process the sugar immediately for energy or it can store the sugar for later as glycogen (a sort of compressed version of sugar). When cells are processing the sugar for energy there are a few checkpoints where...	[ "You are thinking about one high school in California. It has not been banned publicly anywhere else. It was banned at this high school because there was a history of racist violent outbursts at the school between whites and Mexicans." ]
Why aren't we concerned with bacteria, viruses, and other microorganisms developing resistance to alcohol, chlorine, and other substances used to sterilize medical equipment (and hands)?	[ "It is a good question. The answer is how it works on the organism. Anti-biotics work by interfering with some important function of a bacteria cell. Think of throwing a wrench into a machine and watching it gum up the works. Cells that have different machine arrangements can be more resistant to wrenches. They'll ...	[ "Whenever you hear that something kills cancer in research / in a petri dish... just remember that a gun kills cancer in a petri dish, too. Often times the most promising ground-breaking research doesn't pan out farther down the line when they start trying to apply it to full grown humans. Maybe it breaks down in ...
Why is it that in many belief systems, there is a story of a massive flood?	[ "Well, it's not really a historical answer, per se, but Charles Pelligrino --among others-- has suggested that at least where those traditions connected with the middle east are concerned, the flood stories may well be Mesopotamian in origin since both the Tigris and Euphrates are known to have flooded and change...	[ "Politics. It's an easy issue to use to paint your opponent as \"evil\" regardless of which side of the debate they are on." ]
When did U.S. presidents begin using speechwriters?	[ "From the beginning Presidents have been using other people to write their speeches for them. Washington originally had Madison write many of his speeches for him before transferring the responsibility to his cabinet officers." ]	[ "There's been an EU directive requiring those warnings since 2011. It may be that you've been visiting a lot more European sites lately. You're right, almost every website (especially every website with some sort of log in system) uses cookies." ]
Why didn't the US back Assad in Syria or at least let the Russians do it?	[ "Because Assad is a dictator and his people are in open revolt and have been for several years now. As long as Assad has some power he will have enemies, so there can't be a lot of stability if he is around, this is why initially most nations didn't support Assad. However now ISIS represents a threat on a larger sc...	[ "Hi, I've approved the post, but just a note to you and potential respondents: this subreddit has a 20-year rule against discussing current events, so any answers will have to cut off at 1997. If you're looking for answers that can include 1998-2012, do consider x-posting elsewhere, eg. a foreign affairs sub like /...
My gyno told me there are birth control pills with "natural" estrogen, not synthesized. What was that about?	[ "Estrogen, such as that found in medications like premarin, are derived from the urine of pregnant horses. (pre=pregnant, mar=mare/horse). I couldn't find any direct sources talking about Qlaira (the one saying it's \"natural\" estrogen) and where the estrogen comes from, but some information I found is that it is ...	[ "Earth-like planets are just planets which have little or no gas - rocky planets. So Mercury, Venus, Earth, and Mars are Earth-like, while the rest are gas planets. We only have the two terms for planets because until recently we only had the 8 or 9 planets to describe. Could be that as time goes on we'll make up n...
How do cough suppressants work?	[ "There are a few types of cough suppressants and they all address different reasons for coughing. The most common antitussives just seek to sooth irritation like menthol or cherry lozenges. Others try to get rid of the reason you’re coughing in the first place like expectorants or decongestants. Finally there are c...	[ "Most likely the placebo effect. No one really knows why but your brain can be tricked, so long as it thinks you are getting medicine you will feel a bit better. Even if you got nothing but a starch pill. Very strangely it still has an effect even if you find out afterwards that you were taking a placebo." ]
What goes on in our brain that lets us sing songs out of memory and in no effort needed?	[ "Music is a natural inclination for memories. I used to wish there were popular songs for the periodic table of the elements or algebra formulas!" ]	[ "Imagine you're trying to find a coffee shop in a city. If you've been there recently, it should be pretty easy to find. If it's been 10 years since you've been to the coffee shop or the city, it might take you a LONG time to find. It also might take long to find if you've been to other, similar coffee shops in the...
why eating the placenta is not considered cannibalism	[ "because we make loopholes for everything we wanted to do anyways, we invent our vices to justify our virtues" ]	[ "You know how meat gets a little tougher as it cooks? Well, so do unborn babies." ]
How do certain celebrities grow old and still function and look (reasonably) good after so many years of extreme drug abuse? I.e Mick Jagger, Bowie, Ozzy.	[ "A lot of makeup, professionally applied and/or cosmetic surgery. In some cases, genes help. But for the most part, they're not naturally as good looking as they appear in public." ]	[ "Humans eat raw meat all the time, ranging from fish to [horse meat](_URL_4_). All food carries some risks that you'll get sick from eating it (\"pathogens\"), and various things can limit those risks, like [proper cleaning and storage of meats](_URL_0_), freezing meats to [kill bacteria](_URL_3_), and only using m...
What happens to smoke as it dissipates?	[ "I'm going to assume you are taking about smoke from a smokestack or exhaust pipe. This smoke is the result of incomplete combustion - if there was perfect combustion of something like methane the only byproducts would be water and CO2. In reality you get lots of other things - CO, NOx, and particulate matter (PM i...	[ "In the short term? just into space. In the long term? We need to know more. Lets assume were on a space ship orbiting the sun. Lets have one molecule of oxygen escape our space ship with some velocity opposite to our orbital velocity. That means the molecule is orbiting slightly slower then us and would go around ...
Why the exciter power rating in large generators is so small compared to the generators power rating?	[ "You don't lose power from the magentic field. You only need energy to setup the magnetic field, after that you technically need zero power to sustain the magnetic field. The only reason it actually takes power is loses, like the resistance in the rotor coils. Once the field is set up, it certainly feels an opposin...	[ "[This image](_URL_1_) is not a 747, it's a Fokker - but you can see on this type of aircraft how reverse thrust works on jets much more clearly than on a 747. The Fokker deploys buckets behind the jet exhaust. These buckets reflect the exhaust forwards, instead of the normal mode where jet exhaust goes backwards. ...
What happens to kinetic energy after it is used?	[ "If you walk five steps, most of the kinetic energy is transferred to the ground in the form of vibrations. Those vibrations permeate in the ground, concrete, grass, linoleum or whatever you're walking on until they dissipate in the form of heat. Heat (or thermal energy) and kinetic energy are basically the same t...	[ "Units are your friend, at least in physics. In the equation you gave, KE=1/2mv2, KE has units of joules. You should have also learned that a J is equal to kg*m2. And that is how you know the m is squared. When I was taking physics, I only memorized units and the basic parts of equations, then just filled in the re...
Why can we only see the products of proton collisions (like in the LHC), but not what happens in the actual collision itself?	[ "Actually, we can't even see the products of the collisions. When you look at a picture like [this](_URL_0_), what you're seeing are the trails left by the particles as they move through a gas/liquid/etc. The reason we can't see either the particles themselves or the collisions is because everything that happens at...	[ "We can, just not yet. These cameras are the initial landing cameras to make sure it survived the landing. Later this week, the fancy dancey cameras will spring up and give us lovely, awesome (like, literally awe-inspiring) imagery. Although it's pretty awesome already in my opinion :)" ]
This new "Ray tracing" graphics technology Nvidia is all about	[ "Ray tracing itself isn’t new. It has been used in pre-rendered 3D graphics like animated movies for decades. It’s basically a method to simulate realistic lightning and reflections in a 3D scene by actually simulating how light rays would illuminate and reflect off objects. Before, to achieve good results this met...	[ "I thought it was explained pretty well by this old tek syndicate video _URL_1_ Definitely worth a watch!" ]
Why game devs region-lock games, even if it's a free-to-play?	[ "A regional lockout may be enforced for several reasons, such to stagger the release of a certain product, to hinder grey market imports by enforcing price discrimination, or to prevent users from accessing certain content in their territory because of legal reasons (either due to censorship laws, or because a dist...	[ "they sometimes release it earlier in other countries to predict how the movie will fare in its country of origin. for example, I remember awhile back that fast and furious 5 was released early in Australia and it dominated a competing movie there, so it gave the production company a sense of what might happen in t...
Why is the term "Air Conditioner" only applied to cold when they can also heat things?	[ "Because the birth of \"air conditioning\" was primarily to cool hot environments. Making air hotter is simply a matter of building a fire. Making it cooler has been a real challenge." ]	[ "Modern computers use variable speeds that require a variable amount of power. When a computer needs to process information quickly it will increase its \"clock speed\" and that requires more power. That power is not used at 100% efficiency and therefor more power = more heat as the excess energy is converted to he...
Were the remains of Virgina Dare found last month?	[ "No. Look at the other stories on that site- Chupacabra attack? They've been doing archaeology down there for years (though I don't know of any Hopkins sponsored work) but no Virginia Dare. Edited to add- From yesterday: _URL_1_ And earlier: _URL_0_" ]	[ "[At-Will Employment](_URL_0_) An employee who believes they were terminated unlawfully (be it a violation of public policy doctrine or a federal statute) would file an investigation." ]
Why are (in some countries) sexual activities allowed from the age of 15 but watching pornography is from the age of 18?	[ "One part prudishness, one part child safety. Without some form of government-mandated rating system for pornography, softcore porn and tentacle rape scat fetish porn are basically all the same. You can definitely argue that a developing mind is not going to be harmed by watching some porn, however there's a lot of...	[ "Because when we discuss how old something is in the sky we're generally referring to local time. Not the time of the event plus its distance from us. Thus the Nebula was created 1200 years ago our time, or 3200 years their time. So Supernova 1987a occurred 28 years ago is accurate from our perception, we dont say ...
Aviation and American history buffs, would you please help me identify a World War 2 plane?	[ "It looks very much like a B-17 Flying Fortress, one of the main four-engined bombers used by the USAAC. Contrast your GF's GF photo to [this one](_URL_0_) Unless the picture is reversed, they are on the starboard side of the plane . The black thing in the upper-center is a deicing boot, but unfortunately I cannot ...	[ "A good way to track the popularity of languages in an area is seeing how many newspapers were published in that language. Newspapers are more regional than books, and require more of a core language readership to keep going, so if there's a German newspaper around in an area, there's German readers around. My libr...
The health care system of Japan.	[ "Like the United States, Japanese citizens are required by law to have health insurance. For those that don't have insurance through an employer they can be covered by the national insurance plan. Unlike the United States their hospitals are nonprofit by law. It's my understanding that you are responsible for up to...	[ "Some amount of money paid to each citizen no strings, as an alternative to social security. I think the numbers pay out to similar costs. And the benefits are supposed to be substantial. It's already in practice at a small scale in Alaska." ]
Is there any reason that the United Kingdom is usually the colour pink on a map?	[ "Red is a color traditionally associated with England and later Great Britain. For example, English military uniforms of the early modern period were often red, and St. George's Cross (which features prominently on both the old English flag and the modern British Union Flag) is also red. That said, it's hard to rea...	[ "Personally I don't think there were a surge in popularity in the 20th century. Wallpaper has been around since the Renaissance as an alternative to tapestry and a good number of homes have them as they are the cheapest way to decorate a house. According to books such as *Inside the Victorian Home: A Portrait of Do...
Why do the Trojans focus on burning the ships in The Iliad?	[ "While the iliad does relate to actual events, it should not be taken at face value. Regarding your question, destroying the ships would be very useful in crippling the logistics of the besieging force. An army needs to be fed, reinforcements must be brought in, wounded and dead evacuated. Without the lifeline offe...	[ "Tokyo was already pretty much destroyed during the bombing of Tokyo, and Nagasaki and Hiroshima were the next best cities in terms of strategic importance to the Japanese military and war effort, as well as the best cities for the Americans to bomb in terms of alternate targets and bomber range." ]
Late-term abortion legality	[ "There is no law that allows arbitrary terminations at a late stage. None at all. There are rare incidents where a late-term termination is medically necessary, and this is always a tragic case. There s a lot of misinformation about this, from wild claims to fake videos to videos of still-birth deliveries ...	[ "I don't know why this got the orange LABOR banner. :/ If somebody can please tell me how to edit it, I gladly will. Sorry." ]
How is oxygen captured and put into oxygen tanks?	[ "On a commercial scale, air is highly compressed (mechanically with pumps), then rapidly decompressed, which lowers its temperature. Same principle as what you do with coolant in a refrigerator. Except you keep doing this over and over until the component gasses are so cold they're liquid. The various gasses liquef...	[ "The same way that astronomers find out almost everything. They use [spectrography](_URL_0_). Absorbtion colors - the specific colors of light that get emitted when light is absorbed by matter - tell you exactly what element or molecule did the absorbtion and emission. This process works with suns, atmospheres, pla...
Why doesn't gravity work on small scales?	[ "Gravity is a very, very, very, very weak force. To get appreciable gravitational effects, therefore, you need to have very large objects, like a planet. There is a gravitational force between you and that building you walk by, but it is absolutely tiny." ]	[ "The Earth, with the same mass, would have to be less than an inch in diameter for light to orbit it." ]
What is actually an electromagnetic field?	[ "The explanation is really not that different from gravity. The electromagnetic field is a \"thing\" that exists everywhere, charge objects can \"deform\" it, and charged objects are in term accelerated when in the presence of a deformed field. We are perhaps more familiar with \"spacetime\" as a thing that exists ...	[ "Look at [this picture](_URL_0_). Pretty much gets the idea across. The lines in the picture represent magentic field lines. Note how the disk is sorta \"pinched\" between them. In that fashion the disk is held in place." ]
I keep hearing that there is a Holocene mass extinction going on right now. Does a bias from better records available now play a role in this?	[ "Not really. If we keep better track that means that we're able to see the emergence of new species better as well. And it would seem like extinction rates are very high and new species rate isn't. It makes sense. We as humans grow in numbers and our individual resource consumption goes up over time. When we take m...	[ "Way too quiet in here! Everyone seems to be watching the World Cup... A technical question: How does everyone search for book reviews? Is jstor's search usually comprehensive enough when it comes to history/humanities journals?" ]
If we removed all seafaring vessels from the oceans of the world how much would the sea level go down?	[ "This type of question is known as a fermi question. You need to estimate... -average displacement of a vessel -number of vessels -surface area of the ocean ----- If you can get it within a factor of 10 you win!" ]	[ "It varies, but not much individually. The problem is when everyone does it. It's kind of like why you're taught not to pick a flower from a garden when growing up. You alone, picking one flower, is not going to be noticed, it's not going to affect the plant or garden overall, but if everyone picks just 1, very s...
How did Al Capone do in jail? Like was he powerful inside? Did he "run" things?	[ "Before Capone was at Atlanta U.S. Penitentiary, he spent several months in Eastern State Penitentiary (August 1929-March 1930). The prison is now open for tours, and they have a [reproduction](_URL_4_) of what his cell may have looked like. It seems quite nice in comparison to the standard impression you get from ...	[ "Usually when companies are in their infancy or growing rapidly it makes more financial sense to be compensated in stock options. As the company keeps growing those stock options end up being worth millions of dollars or more in some firms. Also for some CEO's choosing this route gives them more motivation to help ...
Why do western countries "scramble" Fighter jets when russia flies close?	[ "Dick waving contest. Despite being overly brusque, this is pretty much it. Plus, if this time proves to be different, you're ready." ]	[ "I've only learned about my country's (Latvia's) history and that was in highschool, so, I won't be able to go in detail. Basically, there were 4 states in my country. 13th century was when the last state (Kurzemes) was finally taken over (actually, it sold itself more than the crusaders took it over). There was no...
Does a sweeter (ripe) banana have more calories than an unripe one?	[ "A physicist's perspective: no, it can't. Calories represent the total chemical energy contained in the banana, and unless energy is added from the outside world (through photosynthesis*), this can't increase after the banana is picked. The banana tastes sweeter as starches and complex sugars are converted into sim...	[ "never seen this in the movies, and this would not be true in real life. think of aloha air flight 243. a huge chunk of the cabin skin peeled off, instantly depresurizng it. it landed safely." ]
Can insects live inside the human body?	[ "When an insect starts living in your body, it essentially becomes a parasite (unless it was providing you some benefit). Something to look into, though, would be the Human Botfly. Wiki: _URL_1_ Youtube: _URL_0_" ]	[ "They are attracted to mostly CO2 and heat, if you refer as to how do they find the blood vessels then the answer is literally poking around. Their proboscis numbs out the sting pain and well... you know the drill. [Here](_URL_0_) is a more detailed video." ]
Why are institutions/companies/monopolies so reluctant to change as new technologies or information?	[ "The simplest answer? People a wary of change. They get stuck in their patterns and routines and will naturally resist anything that is different. However, business is a bit different. Change generally means spending a lot of money to adapt. IT is a good example. How many computers are still running Windows XP, b...	[ "Cost. Where I grew up cable wasn't an option because they would have to run cable 20 miles from their nearest line at the time and even if 100% of the people in my area subscribed, it wouldn't generate enough revenue to make up for the installation costs, not to mention maintenance and repair. It's still not avail...
Questions Regarding Wilhelm II, German Emperor.	[ "These questions are not in my era of primary focus, and I'm very opinionated in my view of the Kaiser/German Empire, so I'll let others answer these. Following are a few books I can suggest: George, Nicholas and Wilhelm: Three Royal Cousins and the Road to World War I by Deckle Edge Kaiser Wilhelm II by Christ...	[ "Remember that many ancient accounts exaggerate numbers, and many are not truly reliable. With respect to the Second Punic War, however, it is accepted that the armies were very large. On the demographic and economic impact of the war in Italy, see _URL_1_." ]
Now that 2D games are a thing again, why don't we see classics being ported to iOS, Android, etc?	[ "The rights to all of those games belong to one company or another, and it is their decision wether or not to utilise that IP. In general, directly porting old DOS games to mobile devices isn't always simple. The games were clearly not designed for that format, so implementing sensible controls might be an obvious ...	[ "Best guess: Poor ROI. To make any chemical substance, you need to set up a lot of equipment. This means buying new equipment, renting a place to put it, and staffing a team. My best guess is that investors are wary of investing in a chemical project that only produces one very controversial drug. The last company ...
How is epigenetic information copied to the daughter genome during DNA replication?	[ "Short answer because I'm on my phone. When DNA replicates, each of the new double stranded DNA helices is made up from one old strand and one new strand. The old strand will maintain the original DNA methylation. Enzymes called maintenance methyltransferases read this methylation and methylate the new strand to ma...	[ "In my economic history course there was a comparative study of landownership in pre-industrial France and England, in which differences in the size of estates and smallholdings was due to the fashion in which properties were consolidated or split up through the generations. In France (maybe this held true for else...
Why is there such a disparity between the redshift value of the CMB and that of the most distant astronomical object observed?	[ "Redshift isn't proportional to the time between when the light was emitted and when we receive it. Actually, it's closer to proportional to the age of the universe at the time the light was emitted. (Not exactly, though. See [this](_URL_0_).) And the light we're seeing from the galaxy was emitted when the universe...	[ "So imagine the universe is a football stadium. Except it's midnight and all of the lights are turned off so it's pitch black. I'm this scenario our earth will be on the 50 yard line. Planet 9 would be a marble 10 yards away. Meanwhile any star or galaxy would be a lightbulb in the end zone. Sure it's much further ...
If I was an employer, would I be allowed to fire whoever I wanted for no reason?	[ "That's highly dependent on your location. The US is generally \"at will\" employment - meaning you can quit or be fired at any time for any reason, as long as that reason doesn't amount to discrimination based on protected attributes (gender, race, religion, etc). Some jobs - particularly city workers - are unio...	[ "Often times the company subsidizes part of the initial costs in exchange for you signing a longer term contract. A classic example in the US at least is mobile phone contracts. AT & T will sell me a new iPhone for $200 if I agree to a 2 year contract. A new iPhone by itself costs at least $600. AT & T pays differe...
Why does communism not work?	[ "There has never been a case of true communism. So, who knows if it works or not? The Soviet Union was first and foremost a dictatorship. It suffered a lot at the hands of corrupt officials and ideology that was not socialist. China has always been a sort of modified socialism (they are known for selling bootlegge...	[ "Think of a rare baseball card. If there's only 10 of them in existence, then everyone would want them and they would be willing to trade hundreds of chocolate bars for it. Now think if they printed 990 more of that rare baseball card. Now everyone has one, and no one is willing to trade a chocolate bar for it." ]

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