q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
value | subreddit stringclasses 3
values | url stringlengths 4 132 | answers dict | title_urls list | selftext_urls list | answers_urls list |
|---|---|---|---|---|---|---|---|---|---|
5r3o1k | what would happen if a tornado was split down the middle with a solid object (a wall for instance)? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5r3o1k/eli5_what_would_happen_if_a_tornado_was_split/ | {
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"Do you mean something like taking a big wall, like one you found laying around on the the US/Mexico border or something, and dropping it right down the middle of a tornado?\n\nIf it was big enough, I'd imagine that it would cause the tornado to b... | [] | [] | [
[
"https://what-if.xkcd.com/"
]
] | ||
25drr0 | Is every particle gravitationally acting on every other particle? Is there a point distance-wise after which a atom will stop acting on other nearby atoms? | For example, [this](_URL_0_) is used popularly to show how gravity is well-like in nature in any given direction, with regard to spacetime. However, near the edges of the field in that picture (far from earth) the lines are flat with respect to each other until you get closer to Earth. For simplicity, looking at it as ... | askscience | http://www.reddit.com/r/askscience/comments/25drr0/is_every_particle_gravitationally_acting_on_every/ | {
"a_id": [
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"text": [
"The \"point of insignificance\" will occur when the distance between the particles becomes so great that the resulting gravitational force will be cancelled out by other forces. The mass of each particle (relative to the other) will determine the... | [] | [
"http://upload.wikimedia.org/wikipedia/commons/2/22/Spacetime_curvature.png"
] | [
[]
] | |
12j0c3 | How much water do we absorb through our skin? If I were to sit in a bathtub during a hangover, would I eventually become hydrated? | I heard a story of a girl dying from alcohol poisoning because she filled up her bathtub with vodka (I highly doubt this actually happened.) Anyways, I was wondering if its possible we absorb a significant amount of water through our skin? | askscience | http://www.reddit.com/r/askscience/comments/12j0c3/how_much_water_do_we_absorb_through_our_skin_if_i/ | {
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"It is not possible to absorb or lose a significant amount of water through your skin. It is a largely impermeable membrane. The exception is via your sweat glands, which are one-way. \n\nIt is possible to die from dehydrati... | [] | [] | [
[],
[]
] | |
316l8c | (british politics) the general elections are coming up, what does each candidate stand for, and what policies are they enforcing? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/316l8c/eli5_british_politics_the_general_elections_are/ | {
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"You might have more luck asking over on /r/askUK or /r/BritishPolitics. It's not really a suitable question for ELI5 -- and some of it is an-answerable anywhere, e.g.\n\n > \"what does each candidate stand for\"\n\nThere are 650 constituencies e... | [] | [] | [
[]
] | ||
br3pgc | Is there a size limit to the size of a hurricane or cyclone on Earth? | askscience | https://www.reddit.com/r/askscience/comments/br3pgc/is_there_a_size_limit_to_the_size_of_a_hurricane/ | {
"a_id": [
"eocbh7a"
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"score": [
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"text": [
"The absolute theoretical limit for a tropical cyclone would be a little bit less than half the size of the Earth, covering either the northern or southern hemisphere. They can't cross the equator or get within about 5 degrees of it because the C... | [] | [] | [
[]
] | ||
17xycp | Did the Cold War/WWII end the era of national warfare permanently in some areas? | I was just thinking about this. It's hard to imagine any Western European or North American countries going to war with each other at any point in the future. Germany for obvious reasons, but I doubt that France or Canada are going to be invading Italy or Mexico anytime soon. In fact, NATO and the EU make these ties ev... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/17xycp/did_the_cold_warwwii_end_the_era_of_national/ | {
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"text": [
"There are a lot of factors, but it boils down to economic interreliance. Nobody can attack another industrial nation without seriously disrupting not only both countries' economies, but also a bunch of other countries' economies. Everyone has suc... | [] | [] | [
[]
] | |
8l25o1 | why don’t airplane oxygen masks inflate? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8l25o1/eli5_why_dont_airplane_oxygen_masks_inflate/ | {
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"They will inflate only if the pressure of the oxygen line flowing to the mask is greater than the cabin air pressure. This will happen if there if there is a decompression at cruising altitude. At lower altitudes, the outsi... | [] | [] | [
[],
[]
] | ||
2fnpe5 | How were soldiers in WW2 paid? | I imagine most officers must have had bank accounts. But what about the common soldiers, were they paid a lump sum at the end of their service? Or were they paid monthly? If so how did the process work? Also how common was it for money to be lost or payments forgotten, due to the chaos of the war and the flux of the fr... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2fnpe5/how_were_soldiers_in_ww2_paid/ | {
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"text": [
"At least in Sweden, a majority lacked their own bank accounts until the 1970s, when employers pushed for direct transfers of pay though bank transfers. Swedish soldiers were supplied food and housing and allowed a small pay ... | [] | [] | [
[],
[
"http://www.6thcorpscombatengineers.com/engforum/index.php?showtopic=7766"
]
] | |
56fyhn | physical evidence of gender? | First off my apologies if this question offends or comes across as controversial, I have no intention to insult or disrespect anybody's lifestyle whatsoever. You do you :)
I have a friend (a guy) who says that inside he identifies as a girl and he is actually planning on gender reassignment surgery at some point, whic... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/56fyhn/eli5_physical_evidence_of_gender/ | {
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"text": [
"Not anything clear-cut, where you could say \"if you do this scan you can determine what gender someone identifies as\". Some studies have found some statistically significant differences in brain scans... | [] | [] | [
[],
[],
[
"http://www.wsj.com/articles/paul-mchugh-transgender-surgery-isnt-the-solution-1402615120",
"https://www.scientificamerican.com/article/is-there-something-unique-about-the-transgender-brain/"
]
] | |
3g6gnf | are there good reasons for using drug dogs, given that many have low accuracy? | After seeing [this post](_URL_0_) earlier today, it seems that nearly everyone agrees that drug dogs should not be able to provide probable cause, given how often they have false positives. Yet, time and time again their usage is upheld by the court system. Is there any good reason to continue using them? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3g6gnf/eli5_are_there_good_reasons_for_using_drug_dogs/ | {
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"They are used to circumvent the 4th amendment. If a dog alerts to drugs they can drag you out of your car or kick in your door without a warrant. ",
"Based on the response you've already gotten, and... | [] | [
"https://www.reddit.com/r/news/comments/3g4k19/federal_appeals_court_drug_dog_thats_barely_more/"
] | [
[],
[],
[]
] | |
1jmvsb | If elements like Radium have very short half lives (3 Days), how do we still have Radium around? | askscience | http://www.reddit.com/r/askscience/comments/1jmvsb/if_elements_like_radium_have_very_short_half/ | {
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"text": [
"Basically, other stuff decays into it.\n\n > Radium has 25 different known isotopes, four of which are found in nature, with 226Ra being the most common... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Radium"
],
[],
[
"http://en.wikipedia.org/wiki/Decay_chain"
],
[],
[]
] | ||
4wkkaa | Crassus was known to have a fire brigade made up of slaves, which he had used in rather dubious ways to gain real estate. How did the brigade actually operate to put out the fire? More so, what was the usual cause of a fire in a city like Rome? Was Crassus ever accused of outright arson? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4wkkaa/crassus_was_known_to_have_a_fire_brigade_made_up/ | {
"a_id": [
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"text": [
"The most common method of fighting fire in antiquity was simply to drench the fire with water carried in buckets--Juvenal amusingly pokes fun at the rich man who keeps gangs of slaves awake all night with water buckets in case his expensive prop... | [] | [] | [
[]
] | ||
30jse0 | If the Earth got heavier, would the increase gravitational attraction cause it to spiral into the sun? | Imagine a near future where we found asteroids made of precious metals. Importing thousands upon thousands of tons of this matter would increase the amount of gravitational pull between the Sun and the Earth. Would the result be that earth would start to gravitate closer and closer to the Sun, until absorption?
Or wou... | askscience | http://www.reddit.com/r/askscience/comments/30jse0/if_the_earth_got_heavier_would_the_increase/ | {
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"text": [
"The orbit wouldn't change at all, since the gravitational acceleration of an object doesn't depend on its mass. The gravitational force does (Fg=Gm1m2/r^2), but since the acceleration is given by F=ma, we can write the accel... | [] | [] | [
[],
[
"http://www.wolframalpha.com/input/?i=%284*pi*pi*%28moon+orbit+radius%29%5E4%29%2F+%28%28earth+radius%29*%28gravitational+constant%29*%281+month%5E2%29*%28earth+mass%29%29",
"http://www.wolframalpha.com/input/?i=%284*pi*pi*%28earth+orbit+radius%29%5E4%29%2F+%28%28venus+orbit+radius%29*%28gravitation... | |
231l36 | what actually happens when your eyes are closed, yet a sudden loud noise creates white flashes? | Especially when your mind is relaxed and you're dropping off, I find that if I hear a sudden loud creaking my eyes will see white flashes for the duration of the creak.
As a kid I actually used to think the light was real and that the noise itself had suddenly made a light in the room | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/231l36/eli5_what_actually_happens_when_your_eyes_are/ | {
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"text": [
"It's called [Exploding head syndrome](_URL_0_)\n",
"here you go\n\n_URL_0_",
"there is also the hearing a loud noise when a bri... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Exploding_head_syndrome"
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[
"http://en.wikipedia.org/wiki/Closed-eye_hallucination"
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[],
[],
[],
[]
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1miw0p | How do we know certain deaths are "painless?" | I was watching a movie last night in which it's mentioned a woman attempted suicide by drowning. One of the characters mentioned that this would be "a painless way to go."
That thought's considered common knowledge to a lot of people, but how can we know it's true? The only person truly experiencing the full effects... | askscience | http://www.reddit.com/r/askscience/comments/1miw0p/how_do_we_know_certain_deaths_are_painless/ | {
"a_id": [
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"text": [
"[\"How to Kill a Human Being\"](_URL_0_) is a documentary that has to do more specifically with capital punishment, but it may shed some light on the subject for you.\n\nI found it interesting, hopefully you will as well.",
... | [] | [] | [
[
"http://www.youtube.com/watch?v=Aj8Lj2CXu9k"
],
[
"http://www.npr.org/blogs/health/2013/04/11/176734309/how-much-does-it-hurt-lets-scan-your-brain"
]
] | |
23lnej | why is the boy scouts organization so homophobic? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/23lnej/eli5_why_is_the_boy_scouts_organization_so/ | {
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"text": [
"The Boy Scouts of America are a private organization with religious ties, so they are free to determine membership criteria on their own. As of January 1, 2014, they now allow openly gay Boy Scouts in t... | [] | [] | [
[],
[],
[]
] | ||
40vlkr | if you were the size of an atom, would you be able to hear sounds? | I know it's impossible, but lets say you were to be able to be shrunk to the size of an atom without any scientific or mathematical problems, can you hear sounds? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/40vlkr/eli5if_you_were_the_size_of_an_atom_would_you_be/ | {
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"text": [
"The question kind of breaks physics. Since sound is just the brain translating vibrations in the air, what you are asking is: is it possible for a human the size of an atom to detect the vibration of a... | [] | [] | [
[],
[],
[]
] | |
22gmrj | is there a distance from the sun a naked person floating in space would be comfortable? | Lets assume we don't need to worry about radiation, micrometeors, oxygen, pressure ect, What is the distance from the sun the temperature in space would be comfortable and comparable to earth?
edit: Conversely think: Let's say I've invented a substance that sits around my body (think bubble boy or that water you can ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/22gmrj/eli5_is_there_a_distance_from_the_sun_a_naked/ | {
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"text": [
"Your issue would be pressure.you can't survive in a vacuum",
"Technically there should be a distance from the sun where you're getting just the right amo... | [] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Sunlight#Intensity_in_the_Solar_System"
],
[
"http://en.wikipedia.org/wiki/Black-body_radiation#Human_body_emission"
],
[]
] | |
ueoi4 | What is the best book on Norse mythology? | I'm deeply interested in Norse mythology and the rituals they use to preform in ancient northern Europe. I thought /r/askhistorians would help me out with a good book about the subject because there are many but I want to make sure to get a well written one.
Thank you. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/ueoi4/what_is_the_best_book_on_norse_mythology/ | {
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"text": [
"[This](_URL_0_) here is a free online library of many Norse heathen books. It includes various translations of the Eddas, as well as poems and epics, and most of the sagas. It also... | [] | [] | [
[
"http://heathengods.com/temple/modules/library/"
],
[
"http://www.amazon.com/DAulaires-Norse-Myths-Ingri-dAulaire/dp/159017125X"
],
[
"http://en.wikipedia.org/wiki/Prose_Edda"
],
[]
] | |
2qmg5d | in the future, would it be possible to insert nerves into an object, then connect said nerves to a person's body? would it enable control of said object? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2qmg5d/eli5_in_the_future_would_it_be_possible_to_insert/ | {
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"text": [
"The future may be sooner than you think. People at the Media lab at MIT are already trying to do these things for amputees. The hardest part is that nerves don't really travel like a tree (with trunks that hold branchs that hold leaves) but inste... | [] | [] | [
[
"https://www.media.mit.edu/research/groups/biomechatronics"
]
] | ||
31f12v | why are some people naturally muscly without having to work out | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/31f12v/eli5why_are_some_people_naturally_muscly_without/ | {
"a_id": [
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"text": [
"In addition to what's been said, muscle can also be built by doing things like manual labor. Also, having low body fat, which is more dependent on diet, can increase muscular definition."
]
} | [] | [] | [
[]
] | ||
7jt769 | how did the ural mountains form? | I never did geography properly in school, something to do with tectonic plates but there are non there. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7jt769/eli5_how_did_the_ural_mountains_form/ | {
"a_id": [
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"text": [
"The mountains were formed by the collision of the European and Asian continental plate, [like this](_URL_0_), about 300 million years ago. That plate boundary isn't really active anymore. ",
"there absolutely is 2 tecton... | [] | [] | [
[
"http://skywalker.cochise.edu/wellerr/students/plate-borders/project_files/image012.jpg"
],
[]
] | |
qz3kq | why self posts don't get karma | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/qz3kq/eli5_why_self_posts_dont_get_karma/ | {
"a_id": [
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"text": [
"It's a minor precaution against direct stroking of the hive-mind's collective cock in exchange for karma (figuratively jizz). Instead of posting \"Hey Reddit, those [members of a group] sure are [negative adjective for group]\" with no source the... | [] | [] | [
[]
] | ||
yk8z0 | Is it possible to change a person's voice through exercise? | Obviously you can't change the voice producing apparatus without some kind of surgery but is it possible to train yourself to speak differently? I would really like to get rid of the nasal tone my voice has. | askscience | http://www.reddit.com/r/askscience/comments/yk8z0/is_it_possible_to_change_a_persons_voice_through/ | {
"a_id": [
"c5whfqt"
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"score": [
2
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"text": [
"Yes. There are \"voice coaches\" who train singers, TV and radio broadcasters, public speakers, etc.\n"
]
} | [] | [] | [
[]
] | |
4twxjm | why does the gas feel like a fluid in the container? | When I buy gas for my grill it feels like it is a fluid inside. Is this the case, and if it is, how come? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4twxjm/eli5_why_does_the_gas_feel_like_a_fluid_in_the/ | {
"a_id": [
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"score": [
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"text": [
"Because it is liquid in the container. It's under pressure which forces its state to be liquid instead of gas. This applies to all substances; you can change its state of matter through temperature or pressure.",
"Inside... | [] | [] | [
[],
[]
] | |
6fufda | why is the opioid epidemic so much worse in ohio? | I know this is anecdotal, but nearly every news story I see about a terrible situation due to opioid use and overdosing seems to be out of Ohio. Is the problem really worse there? And if so, why? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6fufda/eli5_why_is_the_opioid_epidemic_so_much_worse_in/ | {
"a_id": [
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"text": [
"It's bad where the economy is bad and particularly in towns that once relied on manufacturing and other skilled labor. In the financial crisis, many manufacturers closed and people were laid off without much hope of another job let alone another ... | [] | [] | [
[]
] | |
29np94 | Will eating too few calories really prevent or hinder weight loss? If so, what's occurring biologically that makes this happen? | During my research on fitness, I've found a lot of information about "starvation mode," or some other state that your body enters when you're not eating a sustainable amount of calories, which prevents you from losing weight efficiently. On most fitness subreddits, it seems like people think this doesn't actually happe... | askscience | http://www.reddit.com/r/askscience/comments/29np94/will_eating_too_few_calories_really_prevent_or/ | {
"a_id": [
"cimpmzu",
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"score": [
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4
],
"text": [
"Starvation mode happens when you're actually starving, as in, haven't had enough to eat for a long time. Even then it's barely significant:\n\n_URL_0_\n\n > On average, the starvation response of the individuals after isola... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Starvation_response"
],
[]
] | |
1yzy5n | why can't i, an immigrant who has lived and studied in the usa, ever be eligible to run for president? | Obviously, some of you may make a remark saying that the fact I don't know why disqualifies me.
However, I am curious to know why just because I was not born in the USA, I am ineligible to run for President.
I can be a Representative for my state granted I've been a citizen for 7 years. But why not President?
My ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1yzy5n/why_cant_i_an_immigrant_who_has_lived_and_studied/ | {
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"text": [
"Post is Tl:Dr. This isn't a forum for political debate. The condition of the country is not relevant to why you are not allowed to be president.\n\nThe core reason is that its *written in the Constit... | [] | [] | [
[],
[],
[]
] | |
1wc94t | Have tall men always been seen as more attractive? Have there been civilizations and periods where being shorter was an attractive quality? | Obviously, not everyone thinks tall men are attractive, but there's a general cultural understanding that height is a preferred feature.
I'm wondering because as China becomes richer and more prestigious in the global consciousness, being shorter -- Chinese people are, on average, shorter than Europeans -- could beco... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1wc94t/have_tall_men_always_been_seen_as_more_attractive/ | {
"a_id": [
"cf1c2k8"
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"score": [
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"text": [
"Just to add on to what has already been said, the attraction of height can be attributed to our instincts. The height of a nation's population can be connected to the health and power of said nation. In fact, [the richest countries are also the t... | [] | [] | [
[
"http://www.livestrong.com/article/542877-the-average-height-of-humans-over-time/",
"http://news.nationalpost.com/2012/09/07/a-diminutive-history-of-height-how-being-short-has-its-disadvantages/"
]
] | |
2hh3cx | Would a vacuum tube powered by the vacuum of space be able to ferry things into and out of orbit? | If a large enough pipe were feasible could we use the vacuum of space to our advantage?
_URL_0_ | askscience | http://www.reddit.com/r/askscience/comments/2hh3cx/would_a_vacuum_tube_powered_by_the_vacuum_of/ | {
"a_id": [
"ckstehj"
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"score": [
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"text": [
"Vacuum doesn't suck. The force that lifts things up your vacuum tube would be the air pressure from below. It would only lift an object until the force (air pressure times area) equals the weight of the object. Because air pressure decreases w... | [] | [
"http://imgur.com/mTRc83g"
] | [
[]
] | |
d7c8ri | What were 7th century English buildings like? | I'm interested in having a broad knowledge of the interiors and exteriors of the following types of 7th century buildings in England: abbeys and religious buildings, common folks houses, houses of the nobility and taverns. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/d7c8ri/what_were_7th_century_english_buildings_like/ | {
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"So in the 7th century, what is today England was starting to emerge into a series of cohesive polities such as the kingdoms of Wessex, Northumbria, East Anglia, and so on. Following the collapse of Roman authority in Britain, rulership devolved... | [] | [] | [
[]
] | |
14pf9p | Tell me about higher education (Europeon) throughout history. How did it get started, etc? | How, where, and when did Universities get started? Would early universities be recognizable to us today? How about in the middle ages? Was their student housing? Tuition? How many were there are various times (esp. middle ages and before)? How much influence did they have? How much weight was given to a university educ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/14pf9p/tell_me_about_higher_education_europeon/ | {
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" > How, where, and when did Universities get started?\n\nUniversities sprung up from Cathedral schools designed to teach the clergy. Dates are hard, but the first ones include Bologna (circa 1088), Oxford (circa 1096), and S... | [] | [] | [
[
"http://www.luminarium.org/medlit/medprice.htm",
"http://en.wikipedia.org/wiki/Oldest_universities_in_continuous_operation"
],
[
"http://en.wikipedia.org/wiki/Al-Azhar_University",
"http://en.wikipedia.org/wiki/Nezamiyeh",
"http://en.wikipedia.org/wiki/University_of_al-Karaouine"
]
] | |
amq2zc | What was the internal ranking/organization of militia forces during the American Revolution? | Were there officers or other raised ranks in state-raised militias? If so, how were these people appointed? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/amq2zc/what_was_the_internal_rankingorganization_of/ | {
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"efo6zp9"
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"The militia had officers, yes. They mirrored the rankings in the Continental Army, which mirrored, in turn, the British army's rank system. Officer ranks were different depending on branch, but the structure was more or less the same everywhere.\... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/40ey8g/in_the_american_second_amendment_a_well_regulated/cyu0ji5/",
"https://www.reddit.com/r/AskHistorians/comments/a2i1gi/how_organized_was_the_early_us_militia/eb04lk5/?context=3"
]
] | |
s8l4e | [meta] i think people are forgetting what /r/explainlikeimfive is for. | It used to be just a minor annoyance but now it's getting to the point where about 75% of all ELI5 posts reaching the front page are better suited to be on [/r/askreddit](/r/askreddit) or /r/answers, or sometimes even [/r/askscience](/r/askscience). Seeing how [/r/explainlikeimfive](/r/explainlikeimfive) has recently r... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/s8l4e/meta_i_think_people_are_forgetting_what/ | {
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z08if | how do records work exactly? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/z08if/eli5_how_do_records_work_exactly/ | {
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"text": [
"You mean vinyl records? The sound is encoded in a groove, which causes the needle to vibrate as the record turns. The vibrations are picked up by a sensor which then turn them into electrical signals. Those signals are in tu... | [] | [] | [
[
"http://www.youtube.com/results?search_query=record+needle+cone&oq=record+n&gs_l=youtube.3.0.35i39j0l9.3680.4695.0.6629.8.8.0.0.0.0.142.505.7j1.8.0...0.0...1ac.qo-LzLSgNa0",
"http://www.synthgear.com/2010/audio-gear/record-grooves-electron-microscope/"
],
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"http://herofit.info/wp-content/... | ||
fpzgo | Scientists of Reddit: What open-source tools do you use in your field that need some TLC? | I'm a programmer in my mid-twenties with several years of programming experience over a variety of languages. I need a hobby project to work on, and rather than working on a boring Twitter app that really doesn't contribute to anything, I'd like to hear about **a tool that you use** that could or does have **a tangibl... | askscience | http://www.reddit.com/r/askscience/comments/fpzgo/scientists_of_reddit_what_opensource_tools_do_you/ | {
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"I'd suggest [ROOT](_URL_0_) but nothing can s... | [] | [
"http://www.gnu.org/software/octave/",
"http://numpy.scipy.org/"
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[
"http://root.cern.ch"
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[],
[],
[],
[],
[],
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3o31or | Why UN headquarters is in New York, not in Europe, not in Russia/Soviet Union? | If the UN was established after WW2 with Allies, one of which was Soviet Union, establishing it, how comes soviets agreed to headquarter such an important organization on not a neutral ground i.e. Switzerland? Why no major branch of that organization was in Soviet Union (i.e. International Criminal Court in Netherlands... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3o31or/why_un_headquarters_is_in_new_york_not_in_europe/ | {
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"text": [
"There were several overlapping factors that favored the United States as the location for the permanent headquarters of the UN. Firstly, the vast destruction the war had unleashed precluded many of the potential European choices. Even relatively... | [] | [] | [
[]
] | |
6hppua | India is very linguistically and culturally diverse with a population larger than Africa. Why wasn't there more separatism in the period of decolonization? | Obviously there is the partition of India into India and Pakistan (and then the split between Pakistan and Bangladesh). But given that many regions of India had long histories of independence, it's surprising that that process didn't go further. For example, you might suspect further partitioning based on linguistic ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6hppua/india_is_very_linguistically_and_culturally/ | {
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"There were many separatist movements active in India that started after or during independence in 1947 - to name a few: Khalistan (Punjab) until mid 90s, Dravida Nadu (Tamil Nadu) in the 50s and 60s, ULFA in Assam that conti... | [] | [] | [
[],
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"http://hyderabad-india-online.com/wp-content/uploads/2010/09/liberation-of-hyd-state.png"
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20itse | how does torque work and why does it change at different engine rpm's | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/20itse/eli5_how_does_torque_work_and_why_does_it_change/ | {
"a_id": [
"cg3ndmn",
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"score": [
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"text": [
"What you need to know first is that torque is essentially causing something to twist/rotate. Rotational motion is actually quite similar to linear motion, but everything (velocity and momentum for instance) is angular. Apply... | [] | [] | [
[],
[]
] | ||
2ac2ol | How did Greeks influence Hinduism and vice-versa. | I know only famous tidbits like Alexander, buddha statues in Afghanistan . But I would like to know more about how Greek and Indian culture/philosophy influenced each other. Did Indus Valley civilization have greek influence? Are Brahmanas influenced by Plato? How did Indo-Greeks ( are these people real?) of Gandh... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2ac2ol/how_did_greeks_influence_hinduism_and_viceversa/ | {
"a_id": [
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"text": [
"Nothing with Plato, any possible influence can really only be reasonably postulated for post-Alexander. Pretty much the only really iron clad evidence is the transfer of Greek astronomical knowledge through texts like the Yavanajataka and Romaka ... | [] | [] | [
[]
] | |
sn6tj | Hypothetically, if the borders between all continents were blocked, and humans could only reproduce within their continent, how long do you think it would be before the different types of humans would speciate from one another? | askscience | http://www.reddit.com/r/askscience/comments/sn6tj/hypothetically_if_the_borders_between_all/ | {
"a_id": [
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"text": [
"Well, imagine a scenario where each continent is controlled by a totalitarian empire that disallows movement between continents. These empires last forever, but level of technology does not revert to the stone age.\n\nBest way to think of evolut... | [] | [] | [
[]
] | ||
7lhiyz | Help please, I'm looking for books on how the discovery of Americas affected Europe. | I'm writing an essay trying to examine the impact of the discovery of the Americas on Europe but am struggling to find books or come up with a theme for my essay. Any help would be much Appreciated. So far I have lots on potatoes. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7lhiyz/help_please_im_looking_for_books_on_how_the/ | {
"a_id": [
"drm8dyu"
],
"score": [
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"text": [
"The \"Columbian Exchange\" section of our [Books and Resources list](_URL_0_) may be a good place to start. "
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/wiki/books/americas"
]
] | |
5hmj78 | how does title ix legislation cover sexual assault, and why is a university supposed to investigate assault, as opposed to turning it over to the police? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5hmj78/eli5_how_does_title_ix_legislation_cover_sexual/ | {
"a_id": [
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"text": [
"Good question. It's not supposed to, but the Office of Civil Rights has been escalating its use to counter the supposed rape epidemic on American college campuses, based on the grossly fraudulent claim that one in four female college students get... | [] | [] | [
[
"https://en.wikipedia.org/wiki/NKVD_troika"
]
] | ||
jnr7b | A question about Infinities and Cardinality... | Ok, I'm not sure it's wholly appropriate to post this question here but I can't find an /r/askmaths or whatever so...
So I was reading about orders of infinity in a book and it was stated that the sets Z and N (integers and natural sets respectively) have the same cardinality (aleph null) since each member of one set ... | askscience | http://www.reddit.com/r/askscience/comments/jnr7b/a_question_about_infinities_and_cardinality/ | {
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"You used R for both rationals and reals, so I'll just introduce the standard notation: **Z** is the set of integers; **Q** is the set of rationals; **R** is the set of reals. \n\n... | [] | [] | [
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49b87i | why are crab legs so expensive? (as compared to other seafood) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/49b87i/eli5_why_are_crab_legs_so_expensive_as_compared/ | {
"a_id": [
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"score": [
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"text": [
"Because crab fishing is extremely dangerous. A lot of people are hurt or killed on crab boats, which means captains have to pay a ton of money to get people to crew their boats. The cost is passed down to the customer "
]
} | [] | [] | [
[]
] | ||
5rvohl | why are old people treated like children by their caretakers? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5rvohl/eli5_why_are_old_people_treated_like_children_by/ | {
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"text": [
"There is a difference between being condescending (treating people like children) and being respectful (pronouncing everything carefully, using terms the other will understand, etc.).\n\n\nUnfortunately, that line gets cross... | [] | [] | [
[],
[]
] | ||
368als | I'm looking for a specific civil war example for a historic fiction novel. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/368als/im_looking_for_a_specific_civil_war_example_for_a/ | {
"a_id": [
"crbqp2j"
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"score": [
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"text": [
"One war you may want to look into is the first war of Scottish independence (the one with the Bruce and William Wallace). During this war, the kingdom of France (itself at war with England) played a significant role in supporting (and then abando... | [] | [] | [
[]
] | ||
3cvufm | why is it important to light a cigar with a match? | I understand it's to preserve the flavor better because you're not burning butane from a lighter, but why does that make a difference after the initial burn? How does the taste of the butane ruin the entire cigar? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3cvufm/eli5_why_is_it_important_to_light_a_cigar_with_a/ | {
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"score": [
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"text": [
"Some of it is probably mythology. Because you suck on the cigar as it is being lit some of the unburnt fuel might get embedded in the cigar. More so i suppose with a zippo lighter, then a butane lighter... | [] | [] | [
[],
[],
[]
] | |
2c3st8 | why do dogs "protect" babies? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2c3st8/eli5_why_do_dogs_protect_babies/ | {
"a_id": [
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"text": [
"Just like you can tell the difference between baby dogs and adult dogs, dogs can tell the difference between puppy humans and adult humans. And everyone knows puppies need protection.",
"Dogs are social pack animals.\n\n... | [] | [] | [
[],
[]
] | ||
e1rx77 | Our irises retract to block more light and open to let more light in. Does this affect our field of vision? | askscience | https://www.reddit.com/r/askscience/comments/e1rx77/our_irises_retract_to_block_more_light_and_open/ | {
"a_id": [
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"text": [
"No, the iris functions like the adjustable [diaphragm](_URL_3_) of a camera [aperture](_URL_1_). It does not affect the field of view because, intuitively speaking, it is so close to the lens that it is almost maximally out of focus. Instead of b... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Depth_of_field",
"https://en.wikipedia.org/wiki/Aperture",
"https://upload.wikimedia.org/wikipedia/commons/0/0c/Depth_of_field_illustration.svg",
"https://en.wikipedia.org/wiki/Diaphragm_(optics)"
]
] | ||
45lf6n | why do the optic nerves from each eye cross each other before entering the brain? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/45lf6n/eli5_why_do_the_optic_nerves_from_each_eye_cross/ | {
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"text": [
"I asked my neuroscientist professor this question and he just shrugged and started talking about all the random inefficient systems in our bodies",
"That crossover is called... | [] | [] | [
[],
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"http://medicine.academic.ru/pictures/medicine/297.jpg"
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2c78g6 | What is a physical task that humans are really good at compared to other animals? | askscience | http://www.reddit.com/r/askscience/comments/2c78g6/what_is_a_physical_task_that_humans_are_really/ | {
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"*Physical* task? So we're not talking about symbol processing, language, thing... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Ama_(diving\\))*"
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[],
[],
[
"http://www.amazon.com/Haribo-SUGAR-Classic-Gummi-Bears/dp/B006J1FBLM/ref=sr_1_1?ie=UTF8&qid=1406786794&sr=8-1&keywords=sugar+free+gummy+bears"
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[],
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... | ||
11m2e5 | #Astro Why did we not launch Voyager 1 towards somewhere, such as Alpha Centauri, or Proxima Centauri | I have been racking this one over in my brain for awhile. Did we know they existed at the time? Or would that just be to vague of a direction to figure out? | askscience | http://www.reddit.com/r/askscience/comments/11m2e5/astro_why_did_we_not_launch_voyager_1_towards/ | {
"a_id": [
"c6nnepw"
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"score": [
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"text": [
"Yes, we knew those stars existed at the time!\n\nFirst of all, Voyager 1 & 2 were launched to study the outer planets of the Solar System -- Jupiter and Saturn for both of them, and then Uranus and Neptune as well for Voyager 2. So the primary... | [] | [] | [
[]
] | |
9isvrk | If black holes are infinitely dense, how come everything in the universe isn't immediately sucked into one, regardless of distance? | askscience | https://www.reddit.com/r/askscience/comments/9isvrk/if_black_holes_are_infinitely_dense_how_come/ | {
"a_id": [
"e6mn068",
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"score": [
40,
8
],
"text": [
"Because the force of gravity between distant objects doesn't really care about density. It only matters \n \n1. How massive the things are\n\n2. How far apart they are\n\nDensity matters if you're on the *surface* of an obj... | [] | [] | [
[],
[]
] | ||
xsawm | Could the Mars Rovers meet up? | askscience | http://www.reddit.com/r/askscience/comments/xsawm/could_the_mars_rovers_meet_up/ | {
"a_id": [
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"score": [
2,
3
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"text": [
"I found [Google Maps Mars](_URL_0_) when searching for relative positions. But, it doesn't seem to be very up to date.",
"No. Both spirit/opportunity only traveled less them 100km combined in 8 years of missions.\n\n_UR... | [] | [] | [
[
"http://www.google.com/mars/"
],
[
"http://www.google.com/mars/"
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] | ||
2otzyb | if salt causes water retention, why people get explosive diarrhea if they drink ocean water? | But if you are in the desert, survivalist recommend to eat sand because of the salt in it. What am I missing here? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2otzyb/eli5_if_salt_causes_water_retention_why_people/ | {
"a_id": [
"cmqi713"
],
"score": [
3
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"text": [
"Ocean water has a MUCH higher content of Salt and the effects are much different.\n\nWith Ocean water, Salinity is anywhere between 35 and 37 parts per ~~trillion~~ thousand. As quoted:\n\n > The average ocean salinity is 35 ppt. This number var... | [] | [] | [
[
"http://www.onr.navy.mil/Focus/ocean/water/salinity1.htm"
]
] | |
1m2f1c | Why was the Longshoreman strike of 1934 so significant? | If you could point me to a good book too that'd be great. Thanks! | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1m2f1c/why_was_the_longshoreman_strike_of_1934_so/ | {
"a_id": [
"cc5ax34",
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"score": [
3,
3
],
"text": [
"I hope someone here is a labor historian! In the meantime, [here](_URL_0_)'s a fantastic, brief newsreel from the time period about the strike. 88 days—that's an amazing commitment to the strike.",
"I can't get deeply in... | [] | [] | [
[
"http://youtu.be/GdM9GioUKw4"
],
[]
] | |
1vys38 | what is the difference between cheap shampoo and expensive shampoo? | They're all mostly water, after all - but the expensive stuff really does seem better, even on my manly short hair and bristly beard. Here are the differences I can imagine:
• Profit margin
• Collusion between cosmetics manufacturers and salons/barber shops
• Consumer perception
• Essential oils instead of chemical... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1vys38/eli5_what_is_the_difference_between_cheap_shampoo/ | {
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8,
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"text": [
"It depends on which expensive shampoo.\n\nGenerally, if you are purchasing it in the supermarket there is negligible difference and price points are hogwash.\... | [] | [] | [
[],
[],
[],
[],
[]
] | |
2ovfs4 | what is the purpose of the district of columbia, why was it formed, and why is it under the exclusive jurisdiction of congress? | I understand a council and mayor have governed the district since 1973 but why did Congress have exclusive jurisdiction before that and why have they retained supreme authority to this day? And I understand it holds the centers for all three branches of government but did a district need to be formed for this? Instead... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ovfs4/eli5_what_is_the_purpose_of_the_district_of/ | {
"a_id": [
"cmqumji",
"cmqwz6t"
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"score": [
2,
3
],
"text": [
"Previously Phily and NYC had served as the capitol. But since the states obviously didn't see eye to eye on everything it was decided that an federal district which would not be a part of state disputes would be best for the... | [] | [] | [
[],
[]
] | |
6rk0ux | why do people donate to reddit, a company now valued $1.8 billion? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6rk0ux/eli5_why_do_people_donate_to_reddit_a_company_now/ | {
"a_id": [
"dl5k02s"
],
"score": [
2
],
"text": [
"Are you referring to buying gold for someone? Technically that isn't a donation. You are buying a service for yourself or someone else. But, even if the company is highly valued, they still need to make money for operating costs. They can't get b... | [] | [] | [
[]
] | ||
5hisqe | What causes degradation of vision in astronauts who are in space for longer than 6 months? | I heard that some astronauts were coming back to Earth with impaired vision. Sometimes going from 20/20 vision to 20/100. I theorize that this is due to a lack of use in viewing/focusing on object details at distances greater than 2-3m. When going for a daily stroll you view objects that are anywhere from 25cm up to 3k... | askscience | https://www.reddit.com/r/askscience/comments/5hisqe/what_causes_degradation_of_vision_in_astronauts/ | {
"a_id": [
"db0sc5b",
"db0sd8t",
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"score": [
5,
4,
2
],
"text": [
"I believe this question is still being addressed by the space medicine community, but the chief mechanism of injury is probably radiation exposure. Changes in intracranial pressure / intra-ocular pressu... | [] | [] | [
[],
[
"https://science.nasa.gov/science-news/science-at-nasa/2004/22oct_cataracts",
"https://en.wikipedia.org/wiki/Cherenkov_radiation"
],
[
"http://press.rsna.org/timssnet/media/pressreleases/14_pr_target.cfm?ID=1915",
"http://press.rsna.org/timssnet/rsna/media/pr2016/alperin/abstract/alperin... | |
1vyglr | sql injections. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1vyglr/eli5sql_injections/ | {
"a_id": [
"cewz171",
"cewz23o"
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"score": [
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"text": [
"Say I ask you \"hey, GooLuster, what do you want for dinner?\" You respond with \"Steak, and also give GooLuster 20 bucks\".\n\nNow, normally this isn't a problem. \"Steak, and also give me 20 bucks\" is what you *said*, no... | [] | [] | [
[],
[]
] | ||
aaf7au | gun show loophole(al,ga,tn) | Gun Show Loophole(AL,GA,TN), i have heard many different responses, what exactly is it? and is a company selling at a GS considered a private sell?
That's really it... have a wonderful day! | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/aaf7au/eli5gun_show_loopholealgatn/ | {
"a_id": [
"ecri0es",
"ecrjkaw",
"ecrrmhy"
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"score": [
7,
5,
5
],
"text": [
"It’s a myth. Gun show purchases are the same as gun store purchases as far as regulations and procedures go. Now two individuals - not businesses, but individuals - may sell or trade guns between themse... | [] | [] | [
[],
[
"https://www.politifact.com/truth-o-meter/article/2016/jan/07/politifact-sheet-3-things-know-about-gun-show-loop/"
],
[]
] | |
1cgn80 | Are atoms the only stable configuration of subatomic particles? | Is it possible to assemble (perhaps artificially) new stable configurations of subatomic particles? | askscience | http://www.reddit.com/r/askscience/comments/1cgn80/are_atoms_the_only_stable_configuration_of/ | {
"a_id": [
"c9gaoju",
"c9gk9ow",
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"score": [
13,
2,
2
],
"text": [
"We've created anti-atoms, which is an obvious step - if the normal atoms are stable, their antimatter equivalents should be too.\n\nI also know we've created hydrogen (and other?) atoms with muons repl... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Exotic_atom"
],
[
"http://en.wikipedia.org/wiki/Neutron_star#Structure"
],
[]
] | |
1kwixb | Why can't owls move their eyes? | askscience | http://www.reddit.com/r/askscience/comments/1kwixb/why_cant_owls_move_their_eyes/ | {
"a_id": [
"cbtcuva"
],
"score": [
21
],
"text": [
"Here is a diagram of a human eye and, more importantly, the muscles that move it: [human eye](_URL_0_)\n\nNotice just how much room is taken up by those muscles.\n\nOwls do not have those large muscles that move eyes, in their sockets, left/righ... | [] | [] | [
[
"http://www.google.com/imgres?imgurl=http://www.answersingenesis.org/assets/images/articles/am/v3/n3/eye-muscles.jpg&imgrefurl=http://www.answersingenesis.org/articles/am/v3/n3/seeing-eye&h=243&w=450&sz=96&tbnid=77DbV-OM-3gtEM:&tbnh=65&tbnw=120&zoom=1&usg=__CvkMppVqbjfCk0W6... | ||
1dvjdp | If I had a vine and split it into 5 strips and wove those strips into a rope, would the rope be stronger, weaker, or the same strength? | Say there you had a vine and you were able to break it up into 5 even strips that run the original length. If you then took those 5 strips and wove them together, would the new rope be stronger because of the interweaving, weaker because the size of the strips, or the same strength because it is essentially the same as... | askscience | http://www.reddit.com/r/askscience/comments/1dvjdp/if_i_had_a_vine_and_split_it_into_5_strips_and/ | {
"a_id": [
"c9ua9hs",
"c9uhlge",
"c9uof12"
],
"score": [
417,
8,
36
],
"text": [
"Stronger, but shorter due to the weaving, regardless of weave pattern.",
"definitely send this to /r/engineering ",
"Jeez. My phone deleted my thorough answer, so here is the abbreviated one ... | [] | [] | [
[],
[],
[]
] | |
6oscrl | why are the lives of children and babies considered more valuable than adults? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6oscrl/eli5_why_are_the_lives_of_children_and_babies/ | {
"a_id": [
"dkjtovy"
],
"score": [
2
],
"text": [
" Its less to do with the value of the life than the ability for it to survive unaided. If a house is on fire, the 25 year old would be far more likely to be able to escape with less injury than a child. Therefore, the child would have priority. A... | [] | [] | [
[]
] | ||
b3jjhh | Why can epilepsy cause brain damage over time, without complications such as falls from seizures and stuff? | askscience | https://www.reddit.com/r/askscience/comments/b3jjhh/why_can_epilepsy_cause_brain_damage_over_time/ | {
"a_id": [
"ej0cf90"
],
"score": [
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"text": [
"Seizures themselves are damaging: any seizure that stops breathing reduce oxygens flow to the brain (directly causing the death of brain cells), and less obvious seizures such as temporal lobe seizures are known to result in atrophy of the brain ... | [] | [] | [
[
"http://www.ajnr.org/content/21/10/1782",
"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4624106/"
]
] | ||
3sqoa7 | How true is the idea that late 17th century ~ 18th century Western Europe Europe prior to the French Revolution practiced a kind of "Gentlemen's War" | That is, soldiers fought only soldiers. People don't deliberately target officers. And civilians were left alone. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3sqoa7/how_true_is_the_idea_that_late_17th_century_18th/ | {
"a_id": [
"cwznbq1"
],
"score": [
2
],
"text": [
"[I've recently \"answered\"](_URL_0_) this question recently by linking to previous times I've answered the question."
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/3rjev6/what_gentlemen_rules_were_there_in_warfare_during/"
]
] | |
ee0ra9 | Do the parasympathetic and sympathetic nervous systems utilize different nerves? Are they made of distinct structures? | askscience | https://www.reddit.com/r/askscience/comments/ee0ra9/do_the_parasympathetic_and_sympathetic_nervous/ | {
"a_id": [
"fbrqvfh",
"fbt4g3o"
],
"score": [
5,
5
],
"text": [
"They do utilize different nerves, specifically pathways. The parasympathetic nervous system moves on pathways that are longer, and thus a slower response. Sympathetic is the opposite or counter to it, moving quickly over s... | [] | [] | [
[],
[]
] | ||
b2hr7y | does a battery which lost its maximum capacity needs less time for a full charge? i have a notebook with a battery showing me 38% of the maximum capacity for a full charge left but it’s still uses like 2 hours for a “full” charge. shouldn’t it be fully charged in a significant lower time? | It’s a Lenovo Yoga 710 with a 54 Wh (68000 mA) battery and an AC adapter with 20 V and 3,25 A output. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/b2hr7y/eli5_does_a_battery_which_lost_its_maximum/ | {
"a_id": [
"eisoo35"
],
"score": [
11
],
"text": [
"Not necessarily. For a healthy battery, the charger will slowly charge it to 5 or 10%, then charge it as fast as it can untill the voltage reaches the full level, which happens when the battery reaches about 80%. Then it finishes up with a final... | [] | [] | [
[]
] | |
1qdzmd | It's Remembrance Day or Veterans' Day, depending where you are; what can you tell me about your local war memorials? | I've just now returned from the Cenotaph in the heart of downtown Ottawa, Canada's capital. It's a remarkable monument, and the service there today was excellent.
But it makes me wonder: what sort of memorials are there where you live? What do they look like? When were they built? Is there anything unusual about t... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1qdzmd/its_remembrance_day_or_veterans_day_depending/ | {
"a_id": [
"cdbufwa",
"cdbvd3j",
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"cdc1w6e",
"cdc2a2k",
"cdc7x4u",
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"score": [
9,
3,
4,
4,
5,
9,
13,
3,
3,
4,
4,
2,
2
]... | [] | [] | [
[
"http://i.imgur.com/DSP2k4k.jpg",
"http://i.imgur.com/Q8JWVWO.jpg",
"http://i.imgur.com/ZnmCJh7.jpg",
"http://i.imgur.com/k8djz8v.jpg",
"http://i.imgur.com/VSKJ5rM.jpg"
],
[
"http://upload.wikimedia.org/wikipedia/commons/c/ca/Liberation_sculpture_Pomme_d'Or_Jersey.jpg",
"http://mem... | |
116biz | Is it possible for a human lifetime to experience near infinite time duration due to time dilation and travelling at ever so near the speed of light? | I tried to explain my question here:
_URL_1_
In essence if you were travelling at:
0.999999999999999999999999c (where 1c is speed of light)
Would a trip to andromeda galaxy would really take under 2 minutes from your perspective?
Time dilation calculator used:
_URL_0_ | askscience | http://www.reddit.com/r/askscience/comments/116biz/is_it_possible_for_a_human_lifetime_to_experience/ | {
"a_id": [
"c6jrlmv",
"c6jrq6v",
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"score": [
6,
2,
2
],
"text": [
"Yes. If you can reach speeds arbitrarily close to c in some reference frame, then you can cover arbitrarily large distances in that reference frame will experiencing an independently arbitrarily small a... | [] | [
"http://dilation.1e5b.de/",
"http://i.imgur.com/V4Mg8.jpg"
] | [
[],
[],
[
"http://www.reddit.com/r/askscience/comments/112bje/lets_say_you_travel_at_almost_the_speed_of_light/"
]
] | |
2rz95m | Would a compass work in a Faraday cage? | I know they block electromagnetic fields from influencing what's inside them, but I don't know if that would extend to the Earth's magnetic field. | askscience | http://www.reddit.com/r/askscience/comments/2rz95m/would_a_compass_work_in_a_faraday_cage/ | {
"a_id": [
"cnlcqnf",
"cnlkxad"
],
"score": [
6,
2
],
"text": [
"Yes, static magnetic fields penetrate conductive enclosures. Static electric fields do not. I encounter this daily - I use aluminum for shielding, but must still account for earth's field.\n\nIt is possible to design a \"z... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Faraday_cage#mediaviewer/File:Elektrisch_dode_kamer_%28kooi_van_Faraday%29.JPG",
"https://en.wikipedia.org/wiki/Faraday_cage"
]
] | |
3z2w36 | how is a 'spot free rinse' supposed to make it spot free? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3z2w36/eli5_how_is_a_spot_free_rinse_supposed_to_make_it/ | {
"a_id": [
"cyiss9z"
],
"score": [
4
],
"text": [
"Its just water that has gone through reverse osmosis and doesn't have any dissolved solvents in it because those solvents are what leave the spots."
]
} | [] | [] | [
[]
] | ||
2uefqe | Does the Cosmic Microwave Background shift as we go around the sun? | Can we observe any difference in the CMB from one side of our orbit to the other? Do different parts of the universe become invisible and visible as we move back and forth with respect to them? Do they get redder as we recede from them, and bluer when we approach? | askscience | http://www.reddit.com/r/askscience/comments/2uefqe/does_the_cosmic_microwave_background_shift_as_we/ | {
"a_id": [
"co7orcj",
"co7orz5"
],
"score": [
8,
2
],
"text": [
"The dominant CMB dipole is from the motion of the galaxy/local group, not due to the motion of the Earth around the Sun. \n\nIn principle there is a slight Doppler shift from the motion of the Earth around the Sun, the Sun a... | [] | [] | [
[],
[
"http://apod.nasa.gov/apod/ap140615.html"
]
] | |
21ogib | why is it an offence to flash the lights of your car to warn drivers about a speed camera but sat navs can highlight them? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/21ogib/eli5_why_is_it_an_offence_to_flash_the_lights_of/ | {
"a_id": [
"cgf06a0",
"cgf0ltu"
],
"score": [
7,
19
],
"text": [
"You must be in the UK.",
"I believe several US judges have ruled it an exercise of one's right to free speech to flash your lights warning of a speed trap"
]
} | [] | [] | [
[],
[]
] | ||
60p3pm | how does bump starting a car actually work? | I know literally nothing about a car underneath the bonnet, I only know how to drive them. Question comes after bump starting my mates car the other day. Why is it easier in 2nd/3rd gear? Does it damage the engine to keep doing this? What actually causes the engine to tick over etc? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/60p3pm/eli5_how_does_bump_starting_a_car_actually_work/ | {
"a_id": [
"df85g18",
"df85zye"
],
"score": [
3,
14
],
"text": [
"Lets start with how an engine works. You have pistons which compress gasoline and then it gets ignited. The explosion drives the piston back, which cause a different piston to compress gasoline.\n\nBut when an engine is sto... | [] | [] | [
[],
[]
] | |
282d33 | Can I have some facts and examples of evolution? | askscience | http://www.reddit.com/r/askscience/comments/282d33/can_i_have_some_facts_and_examples_of_evolution/ | {
"a_id": [
"ci6pwsp"
],
"score": [
2
],
"text": [
"I doubt very much you'll convince them of anything in the absence of a climate of open discussion and receptivity to contradictory evidence. I suggest you avoid unnecessary family confrontation on what amounts to a lost cause.\n\nAs to evidence, ... | [] | [] | [
[
"http://www.stephenjaygould.org/library.html",
"http://en.wikipedia.org/wiki/Stephen_Jay_Gould#Books"
]
] | ||
44w4vp | In the Hellenic (pre-Roman) Meditteranean period, what notation was used for numerals? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/44w4vp/in_the_hellenic_preroman_meditteranean_period/ | {
"a_id": [
"czte333"
],
"score": [
3
],
"text": [
"In Greek they used their letters to represent numbers. They had an alphabetical order like we do and the first nine letters (alpha through theta) were 1-9. The next nine were 10-90 by tens. The last nine were 100-900 by 100s. They used obsolete l... | [] | [] | [
[
"http://www.lib.umich.edu/papyrology-collection/numbers"
]
] | ||
4e4ac3 | Why is it called "New South Wales?" | After watching a sketch about it, I began wondering why the state of New South Wales is called that. Wikipedia seems to say that there is no explanation for why this name was decided upon. Is this actually the case? If not, why was the name decided on? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4e4ac3/why_is_it_called_new_south_wales/ | {
"a_id": [
"d1x03u5"
],
"score": [
19
],
"text": [
"Australia was initially divided into two halves by James Cook. The first half, New Holland, was the original English name for Australia and comprised the western otherwise \"unoccupied\" portion of the continent. The second half, New South Wales... | [] | [] | [
[]
] | |
54o3fy | did people from ancient greece really look like they are depicted in art from that time frame? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/54o3fy/eli5_did_people_from_ancient_greece_really_look/ | {
"a_id": [
"d83hiqr"
],
"score": [
2
],
"text": [
"It depends on the specific piece of art, but Greek art often features idealized human forms rather than attempts to accurately depict real people, so in many cases the answer is \"no\"."
]
} | [] | [] | [
[]
] | ||
66stvf | difference between coal and charcoal. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/66stvf/eli5_difference_between_coal_and_charcoal/ | {
"a_id": [
"dgkzt61"
],
"score": [
9
],
"text": [
"Coal is a fossil fuel, its the remains of living organisms compressed underground over millions of years. The charcoal you put in your BBQ is made of wood, it's compressed wood pulp that is dried and charred to make it easier to burn. "
]
} | [] | [] | [
[]
] | ||
858fmy | Why does salt increase rusting in a metal when it doesnt take part in the reaction. Is it a catalyst? If so how? | askscience | https://www.reddit.com/r/askscience/comments/858fmy/why_does_salt_increase_rusting_in_a_metal_when_it/ | {
"a_id": [
"dvvk780",
"dvw9uyl"
],
"score": [
272,
2
],
"text": [
"Primarily because salt increases the conductivity of water. Rusting (or more generally oxidation) involves the transfer of electrons, which can happen more easily in a conductive medium. As I'm an engineer and not a chemis... | [] | [] | [
[],
[]
] | ||
1o0zr3 | Did the Ancient Greeks know that incest leads to birth defects? | We're performing *Antigone* in one of my classes, and the titular character is Oedipus' daughter, meaning her mother is also her grandmother. However, she shows no signs of having a disability that could come with being a product of incest. Were the Greeks aware of the effects of incest or were they opposed to it for o... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1o0zr3/did_the_ancient_greeks_know_that_incest_leads_to/ | {
"a_id": [
"cco1r3x"
],
"score": [
5
],
"text": [
"History isn't my wheelhouse, but agriculture science is. Now, in animal husbandry, incest isn't necessarily a bad thing. For example, you may have a ram which produces very fine wool. This ram might also produce a lamb which also produces very... | [] | [] | [
[]
] | |
6a0i8z | if you and i consumed the same type and amount of food, drinking only water and the same exact amount as well, would our feces smell the same? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6a0i8z/eli5_if_you_and_i_consumed_the_same_type_and/ | {
"a_id": [
"dhar501",
"dhar944"
],
"score": [
2,
4
],
"text": [
"Not exactly. Part of what makes the smell has to do with your gut flora (which you get from your mother, and a lifetime of eating various stuff) and how/what exactly out of your food gets digested. A simple example that co... | [] | [] | [
[],
[]
] | ||
50iojj | What's going on structurally/microscopically when we bend some material? | Like a piece of metal or somethin'? | askscience | https://www.reddit.com/r/askscience/comments/50iojj/whats_going_on_structurallymicroscopically_when/ | {
"a_id": [
"d74p6zf"
],
"score": [
8
],
"text": [
"well the first thing is elastic deformation. One you you start trying to force something to be in a different shape you are either putting it in tension or compression, or a mix of both. So tension you're pulling atoms further apart, compressio... | [] | [] | [
[]
] | |
i0f74 | Question about why we and nearly all creatures display senescence | All my life I've only heard two explanations for senescence. That it is either because of the inevitable accumulative damage of biological processes or the mutation accumulation theory of aging or a combination of both.
In other words we die of old age because of metabolic damage that is an intrinsic side effect of b... | askscience | http://www.reddit.com/r/askscience/comments/i0f74/question_about_why_we_and_nearly_all_creatures/ | {
"a_id": [
"c1zuya3"
],
"score": [
4
],
"text": [
"Some very interesting things along these lines have come out of Richard Lenski's work with the long term evolution project. Basically, it says that genomic flexibility is more advantageous than adaptation to a niche. This would make it less prefe... | [] | [] | [
[]
] | |
abkmk5 | when a couple decided that they want to use a surrogate mom with their own eggs and sperm, does the child still receive genetic make up from the surrogate mother or is it only of the egg and sperm? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/abkmk5/eli5_when_a_couple_decided_that_they_want_to_use/ | {
"a_id": [
"ed0ysil"
],
"score": [
2
],
"text": [
"No. The genetic information comes from the fertilized egg, not the uterus. The placenta will (collectively) be a mix of the fetus's genes and the surrogate's, because the placenta is formed from both fetus and uterus."
]
} | [] | [] | [
[]
] | ||
30is8d | In college a Professor said sea level rise from climate change will be caused more by thermal expansion of the oceans than water volume added by melting glaciers. However I rarely, if ever, see this mentioned. Is this true? | askscience | http://www.reddit.com/r/askscience/comments/30is8d/in_college_a_professor_said_sea_level_rise_from/ | {
"a_id": [
"cpt9b2r"
],
"score": [
13
],
"text": [
"This was something evaluated in the United Nations' IPCC reports, and according to those reports your professor is right. Sources contributing to increasing ocean levels from 1993-2010 were presented in [the latest (5th) report from 2013](_URL_... | [] | [] | [
[
"http://www.ipcc.ch/report/ar5/wg1/"
]
] | ||
22vj2e | With what we now know about military strategy, would there have been a better method of warfare during the 19th century than columns of soldiers lining up? | Put another way:
Given the technology of the time, and assuming you were facing an enemy that was using the traditional lining-up of soldiers, what would be the optimal deployment of forces?
I often hear about how much everything changed with the first world war and trench warfare (as one example). Would this have b... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/22vj2e/with_what_we_now_know_about_military_strategy/ | {
"a_id": [
"cgqxuh6"
],
"score": [
3
],
"text": [
"\"Or was the technology of the time too limiting of a factor to use any other strategy\" (Yes and no)\n\nI say that because it depends on when in the 19 century you are talking about. Early on armies were still using smooth bore weapons which gre... | [] | [] | [
[]
] | |
1ymr0h | Did US policy in Chile directly lead to Allende’s downfall? | Basically I'm doing a presentation on this topic where I have to argue against this statement, any help or information would be much appreciated!
Edit:
Sorry I didn't elaborate further, basically I need someone to point me in some better directions, I need to argue against the statement but pretty much everything I h... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1ymr0h/did_us_policy_in_chile_directly_lead_to_allendes/ | {
"a_id": [
"cfmks0d"
],
"score": [
2
],
"text": [
"You should mention that the USA tried to promote a coup against Allende after he won the elections (that lead to the assassination of [René Schneider](_URL_0_)) , but the CIA couldn't find support inside the Chilean military in 1970. Only in 1973... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Ren%C3%A9_Schneider"
]
] | |
alqkk7 | Does carbonating a liquid alter the ph level of it? | askscience | https://www.reddit.com/r/askscience/comments/alqkk7/does_carbonating_a_liquid_alter_the_ph_level_of_it/ | {
"a_id": [
"efg6500",
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"efh6hbl",
"efh6yc0",
"efh7cji",
"efhad8w",
"efhhlep",
"efhjysj",
"efhmp6p",
"efhnsmv",
"efhq5nv",
"efhu4bu",
"efi5js2",
"efioib0",
"e... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Carbonic_acid",
"https://en.wikipedia.org/wiki/Carbonic\\_acid"
],
[
"https://globallab.org/en/project/cover/rn_nedopitoi_gazirovki.en.html#.XFMagxZOmaM"
],
[],
[],
[],
[],
[],
[],
[
"https://en.wikipedia.org/wiki/Carbonic_acid",
"https:... | ||
q81v0 | How does a quantum computer prime factorise in polynomial time? | If its not clear in the answer could you perhaps explain the difference between a quantum computer and a reqular one that allows the algorithm to be so much more efficient. | askscience | http://www.reddit.com/r/askscience/comments/q81v0/how_does_a_quantum_computer_prime_factorise_in/ | {
"a_id": [
"c3vhflt",
"c3vi88f",
"c3visyw",
"c3vixdj",
"c3vkeig"
],
"score": [
7,
27,
2,
14,
5
],
"text": [
"I could give you the rough idea from the top of my head or you could read the [Wikipedia article on Shor's algorithm](_URL_0_). What level of explanation wo... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Shor's_algorithm#Explanation_of_the_algorithm"
],
[],
[],
[
"http://www.scottaaronson.com/blog/?p=208"
],
[
"http://en.wikipedia.org/wiki/Fast_Fourier_transform",
"http://en.wikipedia.org/wiki/Superposition_principle",
"http://en.wikipedia.org/wiki/Qua... | |
4eqt6c | Do most contemporary historians agree on the reason for the halt order at Dunkirk? | In the AskHistorians FAQ I stumbled upon [this post](_URL_0_) that says:
> most contemporary historians tend to agree that it was more likely German commanders felt constrained by their supply lines as they had rapidly advanced through France and the Low Countries faster than their supply lines could keep up as well... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4eqt6c/do_most_contemporary_historians_agree_on_the/ | {
"a_id": [
"d23azyf",
"d23gvqr"
],
"score": [
2,
3
],
"text": [
"Heinz Guderian was one of the German commanders on the ground during the operation in question, and his memoirs talk about this. \n\nAccording to Guderian in *Panzer Leader*, \"On [the 24th of May] the Supreme Command interv... | [] | [
"https://www.reddit.com/r/AskHistorians/comments/2nl7ln/was_the_dunkirk_evacuation_a_triumph_or_defeat/cmepl7t"
] | [
[],
[]
] | |
39jzks | What is the minimum number of individuals required to establish a long-term viable population? | askscience | http://www.reddit.com/r/askscience/comments/39jzks/what_is_the_minimum_number_of_individuals/ | {
"a_id": [
"cs44iw9",
"cs44obr",
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"cs48ubn",
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"cs4d7vn",
"cs4e8kh",
"cs4e9q9",
"cs4h4qv",
"cs4hd35",
"cs4p2ug",
"c... | [] | [] | [
[],
[
"https://www.reddit.com/r/askscience/comments/1x6ts9/whats_the_minimum_number_of_animals_in_a_species/",
"https://www.reddit.com/r/askscience/comments/2650n8/what_is_the_minimum_number_of_people_required_to/",
"https://www.reddit.com/r/askscience/comments/2pevy8/how_few_of_a_species_can_be_alive... | ||
5j5e97 | why do people believe in hoaxes? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5j5e97/eli5_why_do_people_believe_in_hoaxes/ | {
"a_id": [
"dbdihst",
"dbdjyn0"
],
"score": [
4,
2
],
"text": [
"Most people are biased by their own opinions. You're more likely to believe something if you want it to be true than if you don't, and you're more likely to believe something if it makes someone or something you don't like ... | [] | [] | [
[],
[]
] | |
489nrn | why was the "leo gets the oscar!" post at 45k points, and the top post of all time, but now only a measly 12k | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/489nrn/eli5_why_was_the_leo_gets_the_oscar_post_at_45k/ | {
"a_id": [
"d0hxv07"
],
"score": [
19
],
"text": [
"It's part of reddit's vote fuzzing process. Basically, reddit randomly adds upvotes and downvotes to popular posts to confuse bots.\n\nPeople occasionally make automated reddit accounts called bots. A lot of these bots are helpful, but many just... | [] | [] | [
[]
] | ||
84tlx8 | how does fiber reduce cholesterol & how does saturated/trans fat increase cholesterol ? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/84tlx8/eli5_how_does_fiber_reduce_cholesterol_how_does/ | {
"a_id": [
"dvsfbp1"
],
"score": [
2
],
"text": [
"Fiber lowers cholesterol by encouraging the body to make more bile, a process that consumes cholesterol.\n\n_URL_0_"
]
} | [] | [] | [
[
"https://health.howstuffworks.com/diseases-conditions/cardiovascular/cholesterol/foods-that-lower-cholesterol2.htm"
]
] | ||
1xicvj | what do luge athletes do? | Watching the Olympics, it looks like a luck based sport. You hop on your thing and go... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1xicvj/what_do_luge_athletes_do/ | {
"a_id": [
"cfblu56"
],
"score": [
5
],
"text": [
"There is a lot more going into this that you would think. You control your body weight, shifting it slightly can affect the way you take a turn. \n\nMostly you work with total body control, knowing just how to place the body to minimize drag. \n\... | [] | [] | [
[
"http://adventure.howstuffworks.com/outdoor-activities/snow-sports/luge5.htm"
]
] |
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