id stringlengths 5 6 | input stringlengths 3 301 | output list | meta null |
|---|---|---|---|
4qwdyb | Why do we not hear about the 6,000,000 Jews who were about to die in Russia? | [
{
"answer": " > I found via an online newspaper database that there are literally dozens of reports of 6,000,000 Jews facing threat of extermination in Russia or starving in various east European countries. This was taking place from around 1905 to about 1930. What was happening during these times?\n\nLarge amo... | null |
fncf1z | How important was honour in Tokugawa Japan? Could it have possibly weakened rule e.g Ako incident and seppuku after the death on ones lord? | [
{
"answer": "There isn't a simple answer to this question. Tokugawa Japan was not a monolithic society. There were diverse people living in Japan in this long period, separated by wealth, location, social status, gender, occupation and so on. Honor was certainly an ideal of the small but powerful samurai status... | null |
av8cuu | Is human labor and delivery more dangerous than other primates'? Why? | [
{
"answer": "Yes, mainly because of a narrow pelvis, combined with large heads. (Children have huge heads in proportion to bodysize and weight, as they are born with about 33% of adult brain volume)\nHuman pelvi are so narrow because of bipedality, which, as other comments already explained, seems to have been ... | null |
86g9de | Did Isaac Newton know how big the Earth is? How? | [
{
"answer": "Almost certainly. The circumference of the Earth had been known for nearly 2000 years before Newton was born. In about 250BC, the head librarian of the library at Alexandria (Egypt), [Eratosthenes of Cyrene](_URL_1_), came across an interesting account in one of the library's manuscripts.\n\nIt obs... | null |
14yz2n | What is an example of two very similar chemical formulas behaving very differently? | [
{
"answer": "Cisplatin, the anticancer drug, versus transplatin, which is almost chemically identical, but extremely ineffective as an anticancer drug.",
"provenance": null
},
{
"answer": "There are many examples of this. The chemical formula itself is often not a good indication of its properties, ... | null |
gqjja | My friends are watching a documentary, and the host mentioned that "it is estimated that there are more stars than grains of sand on all the world's beaches." Does this have any basis, and is it really true? | [
{
"answer": "After flicking my Google wand quickly, I found [this](_URL_0_). Hopefully a panelist can come in soon to answer this, but it seems plausible.",
"provenance": null
},
{
"answer": "As for the first part of the question, we certainly can make that call. We can take detailed photos of a gal... | null |
3lodb9 | why do some governments see the need to have a tax on taxi fees? | [
{
"answer": " > Why do some governments see the need to have a tax on taxi fees?\n\nTo make money.\n\n > And why can't they tax Uber similarly?\n\nThey could pass a law to do so if they want to.\n\n\n",
"provenance": null
},
{
"answer": "The Australian Taxation Office considers Uber services a taxi ... | null |
4li304 | What is it psychologically that makes $9.99 so much better of a price than $10.00? | [
{
"answer": "[Wikipedia has a whole article devoted to this idea, called *psychological pricing*](_URL_0_). In short, people seem to overestimate the difference between 99¢ and $1, which is why retailers price things in odd units.",
"provenance": null
},
{
"answer": null,
"provenance": [
{... | null |
lhzbo | how did the economy work during the middle-ages? | [
{
"answer": "Very simple. They traded in cash and goods. Cash was typically silver coins (and later gold). There were also accounting techniques which were used for bookkeeping.",
"provenance": null
},
{
"answer": "Since they didn't have fiat money they were forced to barter with things that actu... | null |
8y0mep | how the licence plate system is working in the usa ? | [
{
"answer": "As far as I know, each state handles their own plates. So they are free to create as many custom plate styles as they see fit. Most of the custom plates are local government trying to get more money from you, as you have to pay more for these.",
"provenance": null
},
{
"answer": "I'm fr... | null |
901g1g | Is there any doubt that the Colossus of Rhodes existed? | [
{
"answer": "Strabo states with a degree of certainty that the ruins of the Colossus were visible when he wrote the *Geography* (English version [here](_URL_2_)) at around the turn of the 1st century AD, and Pliny the Elder's [Natural History](_URL_0_) goes into considerable detail about the construction of tho... | null |
43ztnx | why does a deep scrape on elbows/knees/shins stay white for a period of time before bleeding? | [
{
"answer": "This is because initially after an injury, blood vessels contract in order to minimise blood loss. They increase again in diameter later to facilitate healing and the movement of specialised cells and materials towards the site of injury. You can see this contraction and subsequent dilation of bloo... | null |
3cev37 | what "latter" means in a sentence. i've heard it for a few years now and don't understand how to use it. | [
{
"answer": "If I ask whether you have an apple or an orange and you reply that you have the latter, you mean that you have an orange. If you reply that you have the former, you have an apple.",
"provenance": null
},
{
"answer": "The last thing mentioned.\n\nExample: Here are two examples of discipl... | null |
1kmulq | why do we still use roman numerals? | [
{
"answer": "It looks cool.",
"provenance": null
},
{
"answer": "It's for style more than anything else.",
"provenance": null
},
{
"answer": "It's used to lend a sense of importance, or specialness to something. To the best of my knowledge it comes from the resurgence of Classicism (adm... | null |
5nql96 | how will the rising antimicrobial resistance affect us in the future? | [
{
"answer": "Worst case scenario? We're back to the middle ages, when a cut could kill you if it got infected.\n\nWhat's actually likely to happen, though, is that certain bacteria will become highly resistant to antibiotics, and if we can't develop new antibiotics to combat them then those particular diseases ... | null |
b5991h | Did the Ottomans refer to Istanbul as Konstantiniyye? | [
{
"answer": "The official name change was after the Ottomans. It took place in the 20th Century.\n\nThere is a nice discussion anchored by /u/spoonfeedme at [_URL_0_](_URL_1_)\n\n & #x200B;\n\n & #x200B;",
"provenance": null
},
{
"answer": null,
"provenance": [
{
"wikipedia_id": "... | null |
12evz6 | If I can increase the air pressure in an opened 2 liter bottle of soda would that prevent it from going flat? | [
{
"answer": "Pumping air in wouldn't help -- but pumping CO2 in would. What matters for the soda going flat is the partial pressure of CO2 in the atmosphere around it - to a high degree of precision, the CO2 evaporative physics/chemistry is independent of the other gases (like N2 or O2) that might be present o... | null |
2za7ld | if websites like google take a double shot using the captcha (first makes sure you are not a bot, second using you as a worker to do a job for them by reading let's say a house number that is not legible for a machine), how do they know what is that so-called number? | [
{
"answer": "One of the things in the captcha is known to the system already. This is the one they are using to make sure you're not a bot.\n\nThe other one is not currently known. It takes your answer, looks at it and a bunch of other people's answers for the same image, and takes the most common answer. Then ... | null |
5xo2pl | What happens when one plant's pollen gets into another plants reproductive area? If the species are similar enough, will it produce offspring? | [
{
"answer": "Yes, in some cases hybrids can form by pollen fertilizing eggs of a different species. The likelihood of this happening is generally dependent on how different the two species are.\n\nResearchers who study speciation (the process of how new species form) identify traits that are responsible for det... | null |
2h4iih | I have seen footage from World War I and there were two soldiers carrying big, round thing, what could it be? | [
{
"answer": "Did it look like anything on this page?\n\n_URL_0_",
"provenance": null
},
{
"answer": "Some more details would help. Was it smooth or did it have a rough shape? How thin was the tube compared to the hole? Did it look heavy or just unwieldy? Was it one solid thing or a composite? Did it... | null |
2k0cr0 | Can anyone identify these microorganisms? | [
{
"answer": "Number 1 is **likely** a [Rotifer](_URL_0_) from Phylum Rotifera. They are common in fresh water environments. Some are free floating while others anchor themselves to something (plants, soil, rocks etc...). They feed by having the cilia on their corona (these large flaps that protrude from their... | null |
4rbyvb | how can food be "smoked" or have a "smoky taste"? | [
{
"answer": "I smoke and use a \"green egg\" type grill on almost a daily basis.\n\nThe \"smoke\" flavor is absorbed by the outermost part of the meat being cooked, when you cut into it, chicken being the easiest to tell with, a pink ring is created in the meat. this is the \"smoke ring\" where the flavor from ... | null |
3387re | why can't i relax my jaw to be able to freely move it with my hands? | [
{
"answer": "Well, you actually *can* move the jaw by external force. If you've ever been hit in the chin, or bumped your chin against something, and it made your teeth collide with each other, that's what happened.\n\nThe reason it doesn't happen much is that the muscles that move your jaw (the masseter is the... | null |
psjv2 | Arsenic in food. What's the real story? | [
{
"answer": "The CDC's Chemical Profile page for [Arsenic](_URL_0_) is a really good place to start.\n\nIn the US the only exposure levels that have been set are for occupational exposure, by OSHA, and the EPA has set a standard for arsenic in drinking water (0.01 ppm).\n\nIn general, you probably won't ingest ... | null |
3n5rk9 | How efficient/inefficient are computers really? | [
{
"answer": " > As I'm just an undergrad student in mechanical engineering, I realize that I might be looking at this the wrong way.\n\nNo way, you're asking a great question. This is an absolute gem of a question and you've posed it very clearly and thoughtfully. I'm really happy I noticed it because it's dir... | null |
17c5oo | 17 and need to know how taxes work? | [
{
"answer": "Ask them what you have to do to have the most amount withheld (probably have to use `0`). \n\nHow do taxes work? I'd say they don't. But to answer your question, an amount gets withheld from your salary each pay check and gets sent to the government every quarter. Then, at the end of the year you f... | null |
38683b | In films like "The Pianist" and "Schindler's List," German guards seem able to kill prisoners at any time without restriction. Did concentration camps and ghettos have rules stating when and how soldiers could kill inmates? | [
{
"answer": "The problem with camps was a lack of oversight once the initial responsibilities had been established. Meaning the answer to this question depends largely on who the camp commandant was and how tight a ship they wanted to run.\n\nLet's start, not with concentration camps, but with Soviet POW camps.... | null |
3bxj4q | what is the benefit of having all these subreddits going private? | [
{
"answer": "_URL_0_\n\nIn short, Victoria, the AMA lady, was apparently fired today with no notice and no support for the mods and subs who depend on her, and subreddits are shutting down left, right, and center either because she was critical to their operations or as a show of solidarity for all the people w... | null |
bnl3pk | how can matter outside of the observable universe travel faster than light? | [
{
"answer": "It can't. Nothing with mass can ever travel at or faster than the speed of light in a vacuum (c). It sounds like you may be confusing the observable universe with the Hubble volume. Beyond the Hubble volume, objects are receding from us at faster than c because of the expansion of the universe. The... | null |
gdmxy | What is the best way to become an astrogeologist? | [
{
"answer": "get into geology... im assuming you want to study meteorites? Then get to to a facilty that studies the rocks.",
"provenance": null
},
{
"answer": "1. Get a bachelor's degree in astronomy or geology.\n\n1A. Get research experience with a professor.\n\n2. Get a PhD in whichever you didn'... | null |
46ym6c | If I had a rod that was two lightsyears long and suspended in space, and I pushed one end, how long would it take the other end to react? | [
{
"answer": "You are right. The deformation of the material would propagate through at the speed of sound in the material, and so that would determine how long it would take till the other end moved.",
"provenance": null
},
{
"answer": "In the future you can also consult the [physics FAQ](_URL_0_) ... | null |
14fztw | Home experiment demonstrating particle nature of light? | [
{
"answer": "[here](_URL_0_)'s a good example of how you can demonstrate the photoelectric effect at home.",
"provenance": null
},
{
"answer": "Unfortunately I don't think you're going to find much on a macroscopic scale. The quantization of light is on the absolute smallest of scales; unless you a... | null |
15fcis | what the hell is going on in india right now? | [
{
"answer": "If you are a girl in India, you are expected to merge with the crowd outside and not stand out. Even if you don't stand out, you can expect some lewd remarks, comments, groping in the bus or in the subway. \n\nThe sheer expanse of the country makes it impossible to police the people. How do you sto... | null |
2hlqa2 | Was the Catholic Church founded by St Peter or Constantine? | [
{
"answer": "Well, neither is probably the best answer.\n\nThe claim of the Roman Catholic Church is founded on basically two things: a documentary tradition that claims Peter was the leader of the church in Rome and passed on his authority to its bishop as a passing on of apostolic *authority* as well as *prim... | null |
9zszk7 | why do people say “he died for our sins”? | [
{
"answer": "if you don't sin he died for no reason, so sin whenever you are able to, make his death worth a thousend sins",
"provenance": null
},
{
"answer": "Because people need a loophole that can be treated as a ticket to heaven regardless of whether they sinned or not. Assigning the responsibil... | null |
6nnnnk | how were mitochondria allowed to survive in foreign cells without being treated as invaders and digested? | [
{
"answer": "Cells have pretty basic immune systems even now, with a lot of issues with bacteria crawling in and out of them and a lot of human disease involving types of bacteria that can enter cells and the body immune system having to deal with it because the cell immune system can't. Go back a hundred milli... | null |
8d80s5 | how does entropy prove why time only goes forwards? | [
{
"answer": "Entropy is the gradual decline of the universe from order into disorder. It's irreversible, too; any energy we spend to create order in one area will inevitably create disorder in another area. The only way it would be possible to reverse the effects of entropy would be to reverse the flow of tim... | null |
7ztam8 | My professor told me that one of the worst mistakes a historian can make is to engage in a teleological reading of history. What is that, and why is it so bad? | [
{
"answer": "Going back to the philosophical debates of the ancient Greeks two of the most prominent competing overarching theories of the nature of the Universe in general were teleology vs. mechanism. Teleological beliefs are those that say that things exist or happen for a reason. For example, the idea that ... | null |
20kpfi | why are relays (electronics) used? | [
{
"answer": "A relay allows a much smaller current to switch a very large current, or a DC signal to switch an AC signal, or for a single signal to switch multiple signals. They're very versatile. \n\nTo be turned on via relay contacts just means that power is supplied from the electrical contacts of the relay.... | null |
3i4ls9 | why do my joints hurt during menstruation? | [
{
"answer": "Estrogen affects joints by keeping inflammation down and estrogen levels decline during menstruation. ",
"provenance": null
},
{
"answer": "I get this is well, and my doctors can't explain it. I'm at a perfect bmi (actually maybe a bit on the low side) and it's only my right leg. But al... | null |
2w34rk | Are the busts of Roman leaders like Caesar taken from death masks or are they impressions crafted from contemporary descriptions? | [
{
"answer": "Follow up query; Octavianus, Trajan and even Constantine I had a bust, however Basil II did not. At what point did they stop producing busts for each emperor and move towards using mosaics like that of Zoe and Constantine IX or Ioannes II Komnonos at the Hagia Sofia?",
"provenance": null
},
... | null |
n8be5 | Is it possible that our solar system is inside of the event horizon of a black hole? | [
{
"answer": "This write up seems to refute the idea - [relevant post by robot roll call](_URL_0_)",
"provenance": null
},
{
"answer": "This write up seems to refute the idea - [relevant post by robot roll call](_URL_0_)",
"provenance": null
},
{
"answer": null,
"provenance": [
... | null |
5qacn3 | If you pour equal amounts of hot and cold water in a container, would the resulting mixture be the exact median of the two temperatures? | [
{
"answer": "In good approximation yes, as the total energy is conserved and the temperature is a direct measure of energy per volume. The mixture will have the average energy per volume of the two initial portions and therefore the same temperature.\n\nHowever the factor of proportionality between temperature ... | null |
2om7zl | how do we know that my blue is your blue? | [
{
"answer": "Like [This](_URL_0_) ?",
"provenance": null
},
{
"answer": "We aren't. This holds true for all \"fundamentals\" in human perception - sound, taste, etc.",
"provenance": null
},
{
"answer": null,
"provenance": [
{
"wikipedia_id": "12845006",
"title"... | null |
1m9w3g | how does overheating affect a laptop's performance? | [
{
"answer": "Excessive heat can damage the silicon logic or the metal wires or capacitor's electrolytes or melt insulation. It can set fire to dust inside the machine. ",
"provenance": null
},
{
"answer": null,
"provenance": [
{
"wikipedia_id": "3879451",
"title": "Gaming c... | null |
6b2l44 | how do audio editors manage to dub movies without losing the rest of the sounds(i.e. ambient noises, background music, gunshot noises) | [
{
"answer": "There are multiple soundtracks going on at the same time and each soundtrack can be adjusted individually. So they record the background noises, they record the voices and they record other things as well.\n\nWhen they replace the voices, they just switch out the voice track but keep others the sam... | null |
1s5qs7 | What was the Cuban side of the Missile Crisis? | [
{
"answer": "Leading up to the Cuban Missile Crisis, and even throughout the crisis and for a time after it was concluded, the CIA was carrying out acts of sabotage and terrorism in Cuba. This was called the [Cuban Project](_URL_0_) (alternatively, Operation Mongoose). While the failed invasion of the Bay of Pi... | null |
5zrb1d | How did Western Europian Socialist Parties view the USSR? | [
{
"answer": "With regards to Italy, the matter is very complicated. \n\nThe Italian Communist party had a love-hate relationship with the USSR. \n\nThe Italian Socialist Party was a generally capitalist-oriented, pro-European, \"Third Way\" party, although when he was Prime Minister, Socialist leader Bettino Cr... | null |
7itnyd | how can we so distinctly remember things that never actually happened? | [
{
"answer": "It is possible to vividly imagine something and then simply re-categorize that mental image as a memory rather than something you imagined. The act of remembering it works just the same. You can see what it looks like, hear the sounds or voices, and so forth. You just have attached a wrong categ... | null |
56p0jd | how to simplify square roots, such as √99 into 3√11? i just can't understand this concept. | [
{
"answer": "To bring numbers outside of the root sign, they have to be a square. Then when you bring it outside, you take the root of it. \n\nThink of √99 = √(9\\*11) = √(9)\\*√(11) = 3√11\n\nFactor out any squares inside the root, then you can remove them.",
"provenance": null
},
{
"answer": "okay... | null |
ohf9v | Can you break your own teeth by closing your jaw? | [
{
"answer": "If your teeth are damaged from tooth decay you most certainly can.\n\nThe teeth are made of calcium and if they aren't taken care of they can slowly get eaten away by bacteria on the teeth. This will weaken the surrounding layer of the tooth and eventually make them brittle and prone to damage.\n\n... | null |
55w9lh | . how do soda fountain machines work? | [
{
"answer": "Lots of tubes, and a mixer on each nozzle. \n\nBasically there are 3 parts that go into your fountain soda. \n\nWater - first tube from water supply to each nozzle. \n\nCo2 - large canister in back (think like size of a large helium tank) - 2nd tube to each nozzle. \n\nSyrup - generally come in box... | null |
9dp605 | Why does plasma create light, when it is just a superheated gas? | [
{
"answer": "The same reason as everything else. When an object is heated, energy is added to it. Specifically this is kinetic energy of the atoms, they vibrate at higher and higher frequency. Some of this energy is transferred to the electrons in the atom, which may then become \"excited\" (jump to a higher en... | null |
3g6nf9 | what was so major about that debate yesterday? | [
{
"answer": "I got majorly drunk playing the Debate Drinking Game...\n\nIt's not really that major. It's just a tool the Republican Party uses to gauge which candidates are least likely to be eaten alive in the public eye. ",
"provenance": null
},
{
"answer": "The process has to start somewhere. ... | null |
x64b7 | Why do people experience cravings years after they have quit the substance to which they were addicted? | [
{
"answer": "You should think about addiction as a *learned* behavioural response. Cravings are usually triggered by two events, first is when exposed to drug related stimuli (e.g. seeing a crackpipe, bong, watching people take drugs, walking past the pub, thinking about drug use) and the second is when exposed... | null |
5rh2ne | why is it that when my feet are cold and i put them under my covers, they start sweating but they're still freezing? | [
{
"answer": "The control center in your brain for body temperature (the hypothalamus) is part of a different network than the sensory system for perception of heat (primary somatosensory cortex).\n\nThe control center for body temperature is more concerned about the temperature in your brain and other vital org... | null |
bxz9xx | why do some recent films from the 2000s need to go through a remaster process into higher resolutions like 4k? aren't the original source files already at their native resolution, especially if they were filmed digitally? | [
{
"answer": "No, there was still a lot of film used in the 2000s. Even so, digitization for HD (1080) is very different from digitization for 4K (2160) because different bitrate limits are needed for the different formats. There might have been a 4K \"digital\" version for theaters with digital projectors in ... | null |
8alfy3 | why does an extra oxygen atom make such a big difference between h2o (water) and h2o2 (rocket fuel)? | [
{
"answer": "The bond between the two oxygen atoms in H2O2 is not very strong and, as a result, the molecule as a whole is rather unstable. H2O2 readily breaks down into normal H2O and O2, producing heat in the process.",
"provenance": null
},
{
"answer": "Well, the LOX and LH2 are stored separately... | null |
67fm6m | The Fukang meteorite is estimated to be 4.5 billion years old, how is it that people manage to estimate its age? | [
{
"answer": "The age of meteorites is measured the same way we measure the absolute age of materials on Earth, via [radiometric dating](_URL_0_). I'm going to venture a guess that your confusion might stem from a common misconception, namely that radiometric dating always equal carbon, or ^14 C, dating which is... | null |
61ambb | why is it illegal to copy the appearance/design of others' inventions, but not illegal to copy the taste of other brands' foods? | [
{
"answer": "Appearance or design seems much more quantifiable than taste, which is far more subjective and varies from person to person.",
"provenance": null
},
{
"answer": "Because most designs are patented or copyrighted. Some flavors are patented too, but it's easier to find things that taste si... | null |
8j8ajo | Why is it so difficult to clean up oil spills that happen in large bodies of water? | [
{
"answer": "Actually, compared to other liquids, lipids can be removed quite easily as they are less dense than water and therefore float. When you pour oil into a tub of water, you can simply lay a tissue on the surface and it is going to absorb the oil quite neatly. I think for oil spills on the oceanic leve... | null |
11z2wo | Does the age in which you procreate affect what is inherited by the child? For example, will a child that is conceived by 20 year old parents have traits very different than if the parents were in their 50's? | [
{
"answer": "I know Autism is linked to the age of the Father.\n_URL_0_",
"provenance": null
},
{
"answer": "Downs syndrome is more likely as the mother gets older. I'm pretty sure that has nothing to do with what genes are inherited though. Its pretty much completely random no matter what age the p... | null |
gp802 | Does the 5 second rule actually work - how do germs attach themselves to things? | [
{
"answer": "[_URL_0_](_URL_1_) addressed this. \n\nShort version: There is no 5-sec rule, if there is something there is attaches immediately, if there is nothing there, it can sit for a long time.",
"provenance": null
},
{
"answer": "Sorry to say, but germs can crawl, at least swim, using whip-l... | null |
3nmc7q | Did Vikings have music and/or art (paintings, sculptures, etc)? | [
{
"answer": "Art is so much and hard to define. I would argue that the Vikings were very artistic. Look at their wood carvings on boats especially. There are some very fine details you can see this very day on the well preserved **Oseberg Ship** for example. \n\nThe Vikings worked with material they had plenty ... | null |
5oyc6o | why are most cars sold in muted colors as opposed to bright ones? | [
{
"answer": "Bright colors (except red) typically do not sell very well as compared to greyscale or muted colors. Not that many people want bright colors like green/cyan/yellow, and cars used for commercial purposes are almost exclusively greyscale.\n\nNew Car dealerships, especially smaller lots, do not wan... | null |
oob88 | What exactly is an analog computer and how do they work? | [
{
"answer": "A computer is basically any device or method which can satisfy or solve a complicated inquiry or problem faster than a human brain would be able to figure out. See a [slide rule](_URL_0_), for a good example. ",
"provenance": null
},
{
"answer": "The linked example is actually a digital... | null |
987v7h | can someone explain to me what is right, far right, left, far left, middle right, middle left and such in politics? | [
{
"answer": "“Right” and “left” refer to the conservative and liberal groups in a country. “Right” refers to conservative and “left” refers to liberal. These terms are relative to time and country. For example, in the United States, the Democrat party is considered “left” or liberal, though in many other countr... | null |
1hpmaq | do canadians have the same rights and freedoms as americans? | [
{
"answer": "The US and Canada have different legal systems. While many rights and freedoms overlap between both countries you should never apply any legal advice regarding the US into the Canadian system. ",
"provenance": null
},
{
"answer": "In general, your rights when dealing with the police her... | null |
5ealz2 | Books on Finland During the Cold War | [
{
"answer": "You could look at *Urho Kekkonen: A Statesman for Peace* edited by Keijo Korhonen, written in 1975. \n\nThe book focuses on the long-term president of Finland, Urho Kekkonen, and his policies with respect to foreign relations with the Soviet Union and with Western Europe. It includes contributions ... | null |
3qo7cm | what is that warm, fuzzy feeling in your stomach when you fall in love with someone? | [
{
"answer": "That fuzzy feeling is actually a baby that starts to grow, if u love each other then it continues to grow until it comes out but if things don't work out then it shrinks back to inexistence",
"provenance": null
},
{
"answer": null,
"provenance": [
{
"wikipedia_id": "29... | null |
a6rmj4 | Are there precious resources (ie gold, copper, titanium) on the moon? Would it be possible to mine them? | [
{
"answer": "The moon actually has a fairly high abundance of titanium compared to most bodies in the solar system--so far as we're aware--and in general you should expect to be able to find all metals on the moon in rates comparable to Earth. It's nonmetals like carbon, nitrogen, and phosphorus--all necessary ... | null |
20ipl3 | Why were there no medieval Eropean cities with a population as a high as first century Rome? | [
{
"answer": "Because a city so large needed a massive amount of land and the centralization of power to control what happens on that land to feed it. The *annona* was, among other things, the tax with which the Roman empire fed the city of Rome. There was a Prefect of the Annona whose sole job was to oversee ... | null |
bmyal7 | why does your leg jerk when you hit the ligament below the knee? | [
{
"answer": "I'm not a native speaker but I'm pretty sure I know what your question is.\n\n & #x200B;\n\nThe answer is kinda simple: It's supposed to tense the leg when falling/jumping on the ground to catch the bodies weight. The \"shock\" that goes through your body from landing would trigger this mechanism a... | null |
1hepsz | how cameras work. how do they capture an image and print it? | [
{
"answer": "Imagine if you were holding a piece of paper with a bunch of glue. Now imagine if someone put glitter in front of a fan, the paper would catch the glitter and you'd have a picture.\n\nNow imagine if your sister stood in between the fan with a metal door she could open. You tell her to open it for 1... | null |
3e50rf | why don't gas pumps themselves accept cash? | [
{
"answer": "Because if they did accept cash, they would need to be stocked with cash to dispense change and also have added security features to protect that cash and any cash you add to it. They would also need to hire someone to come and restock and collect the cash. No, they can not just get the clerk at th... | null |
1s4tge | Were the founding fathers radicals? | [
{
"answer": "The most radical of the generally-recognized “founding fathers” was Thomas Paine—his views on politics and religion, and his bitterness at what he felt was betrayal by other revolutionaries, eventually made him an outcast in American society.\n\nPaine also took an active part in the French Revoluti... | null |
c22zq8 | how do gas stations make money, or account for the volatility when oil prices are falling? do they "buy" the gas when the fuel trucks refill the station or are their profits calculated at a spot price each day based on how much gas they sell? | [
{
"answer": "Gas stations plan pricing semi-long-term. They will set a price that accounts for predictable fluctuations in oil prices - in one week the oil price might drop a little, but the gas station will keep their prices the same, because it's likely the oil price will bounce back up the following week. Ov... | null |
dfbh08 | what’s the difference between a stratocaster and a les paul. | [
{
"answer": "The les Paul has a bigger body and a deeper tone. Strats are extremely versatile with tones. They are also light weight and sound killer through any kind of amp.",
"provenance": null
},
{
"answer": "A big **difference between** the **Stratocaster** and the **Les Paul** is their scale le... | null |
3zw7z0 | why is it that rap disputes are/were far more common, and typically more violent than other genres of music? | [
{
"answer": "Rap and Hip-Hop grew out of gang culture: dance and rap battles were a way for gangs to solve minor disputes without resorting to violence.\n\nThis meant that many early Rap and Hip-Hop stars came out of gang culture; and when their rap battles grew heated and serious; they did what they had before... | null |
1lwwfn | How do astronomers turn observations of a celestial object (eg. Halley's comet) into solid information about its position, size, orbit, etc, and be able to predict it's behaviour in the future? | [
{
"answer": "Wow this a huge question so i'll try to keep my answer short and simple:\n\n\nThe position of bodies on the solar system are determined using either radar (for big bodies) or the parallax method for smaller ones:\n_URL_0_\n\n\nThe orbit is extremely notorious to calculate, you need to fit the posit... | null |
bagkd0 | What causes the two big population spikes in China's population pyramid? | [
{
"answer": "I believe the first \"spike\" was due to (a) the great leap forward in the early 1960s which killed a lot of people, and (b) decreased birth rates starting around 1970 due to a two-child policy and then one-child policy. Basically, starting in the mid 1960s, birth rates dropped. Consider also dec... | null |
1w9hfk | why aren't red pandas and other cute/exotic animals bred as pets? | [
{
"answer": "Not every cute animal would make a good pet, relatively few species out there can thrive while domesticated like cats, dogs, etc.\n\nMany will never be tame, or may need a lot of space to be happy, or cannot be house trained, etc. You can try to breed pet-like qualities, but it won't necessarily be... | null |
l6k8t | Kilogram or Newton? | [
{
"answer": "We interchange between them because they are directly proportional to each other. (That's within the variations in the Earth's gravitational field--much to small to typically matter.) If you know one value, you also know the other. Depending on the situation, one can be more meaningful than the oth... | null |
ah5re4 | how do drag racers get grip at the beginning of a race by spinning tires? | [
{
"answer": "They burn out to heat up their tires and soften the rubber to make it more sticky. When they race they carefully control the throttle and clutch so that they are right at the edge of breaking their tires loose into a burnout but not quite. If they accidentally do burn out during a race they will lo... | null |
56vhst | how come being outside in 90 degree weather is uncomfortable, but 90 degree water is amazing...65 degree weather is very comfortable, but 65 degree water is awful? | [
{
"answer": "The thing is, your body doesn't really measure temperature - it measures a little something known as heat flux.\n\nHeat flux is pretty much the rate at which heat enters or leaves your body. For us, the most comfortable state is when we have a little bit of heat leaving our body. \n\nIn all of thes... | null |
1v1783 | Would matter-antimatter annihilation be any different than nuclear explosion? | [
{
"answer": "The annihilation reaction is much \"cleaner\" as all the reactants form photons with the same energy. There would be a large flash of almost monochromatic gamma radiation. A nuclear reaction leaves free neutrons and radioactive nuclei flying around. The dust, clouds, etc would depend on the environ... | null |
7640s3 | Why is the French Revolution (1789) is considered much more important than English Revolution (1649)? | [
{
"answer": "There are a number of contributing factors to this disparity. First and foremost is the wider global impact of the English Revolution, or rather the lack thereof. The French Revolution is particularly unique among revolutions(other than the Russian Revolution, but I won't get into that) in that the... | null |
2omwgj | Why aren't small invasive species collapsing ecosystems? | [
{
"answer": "They do.\n\nFor some reason invasion of tiny unmentionnables is just not that sexy a topic in journalism and it usually slides under the radar.\n\nYet there are huge problems with (for instance) [the introduction of earthworms to northeast N America](_URL_1_), or [the uncontrolled expansion of the ... | null |
1pj2xl | Which civilization in the ancient (latest being Early Middle Ages) world held the highest literacy rate? Were there any authors who weren't scholars in that civilization? | [
{
"answer": "**EDIT** Okay, pretty much everything I've written here is contradicted by u/Silence_Dobetter's below comment and source. Further digging suggests that high literacy among ancient Jews is something of a myth. I'll take this up with my source.\n\n**********\n\nPerhaps the Israelites?\n\nI took a c... | null |
4ryg6e | what is the difference between the different types of antidepressants? (ssri, snri, tca, etc.) | [
{
"answer": "Finally something psychology based that I can answer!\n\nOkay, I don't know how much you know, so I'm going to explain everything that I need to. Here goes:\n\nThe biological theory of psychology states that mental illness is caused by imbalances in chemicals in the brain called neurotransmitters. ... | null |
2szczh | My grandfather was a German soldier in WWII and I found this map in his old Atlas. | [
{
"answer": "The retreat from Warsaw that's plotted on the map corresponds in time and places to the so called \"wandering cauldron of Kielce\" of parts of the 342 Infantry Division - more specifically the XXIVth Panzerkorps. \"Cauldron battle\" is the German term for an encirclement battle - the troops were e... | null |
bfo6m4 | [Mathematics] Is there a faster way to multiply (large) numbers? | [
{
"answer": "There's two operations in here: multiplication and addition. Addition is considered cheap in that the trivial algorithm runs in linear time, which is optimal. So I won't consider the number of additions needed in what follows (there'll be some linear term).\n\nYour algorithm is the standard long mu... | null |
7x1seh | why do our toes taper down in size? | [
{
"answer": "The big toe is a left over from our days as apes. Their feet were shaped more like our modern hands and the big toe functioned like a thumb, allowing us to grip onto branchs to avoid falling. [Human vs Chimp foot](_URL_0_)\n\nAlthough good in trees, this wasn’t useful when our ancestors switched to... | null |
aynpj9 | since animals do not brush their teeth how do they prevent cavities? how do they get fluoride for their teeth enamel? | [
{
"answer": "Strictly speaking, most animals don't have high-sugar diets, so are generally less susceptible to cavities in the first place. They also have much shorter life spans and die before tooth decay becomes a huge health problem anyway. \n\nIt's worth noting that a lot of animals do get their teeth clean... | null |
5u9db0 | if real estate in downtown toronto, (specifically toronto, not the gta in general), is so overvalued, why does the population continue to grow at a relatively consistent pace? | [
{
"answer": "\"Overvalued\" isn't really a functional concept. In practice, it's just used when something is more expensive than someone wants it to be.\n\nThe real estate in any given place is worth as much as someone is willing to pay for it. If the prices are high, it means people are paying a lot of money... | null |
a0c73b | why is buying from small businesses better? | [
{
"answer": "It helps people maintain and develop new opportunities, almost all the big chains were once small businesses, and they only grew because people gave them a chance.\n\nAlso you tend to get better customer service, and higher quality products (if made there) by a smaller bussiness. \n\nReminds me of ... | null |
n62nt | How many Decibels can kill a human? | [
{
"answer": "End of the day, sound waves are just variations in pressure in the air, essentially the same thing as explosives. So if you were able to find a figure for the smallest value of pressure that is not survivable by a human, you could probably then convert that figure into equivalent decibels. \n\nEdit... | null |
lehz9 | what does this german sign mean? | [
{
"answer": " > **NATO military bridge classification signs**. Posted near bridges and viaducts and indicates the safe load-carrying capacity of the bridge for military vehicles.\n[source](_URL_0_)\n\n[See also](_URL_1_)\n\nTo ELY5:\n\nIt means that tanks and trucks that are heavier than that number can't cros... | null |
3pmr95 | What determines whether the country uses its indigenous language as the main language or a foreign language as the main language? | [
{
"answer": "The Finns always remained in Finland, even when they were under Russian occupation. Similarly when the Swedes owned the land the language never \"died out\" as such, as it was still spoken by the majority of people - Swedish became Finland's second language however, as the nobility spoke it.\n\nOn ... | null |
3cslm7 | How bloody was the Spanish occupation of the Netherlands? | [
{
"answer": "Considering the revolt of the Netherlands lasted 80 years, this varied greatly by period. Regents such as Mary of Hungary was able to increase the wealth of the region through trade, although she was over-ridden by Charles V who captured and executed leaders of the Ghent revolt to discourage furthe... | null |
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