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 |
|---|---|---|---|---|---|---|---|---|---|
2h8t1p | Is the story of the Viking at Stamford Bridge just made up? (Link to story inside) | Link: [_URL_0_](_URL_0_)
Yeah, I know it is _URL_1_. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2h8t1p/is_the_story_of_the_viking_at_stamford_bridge/ | {
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"This story comes from an English primary source from the twelfth century, what the Viking historian Gwen Jones (The Vikings, second edition) refers to as the \"'C' Chronicle\", which read as follows:\n\n\"The Norwegians fled from the English, but... | [] | [
"http://www.cracked.com/article/197_the-7-most-badass-last-stands-in-history-battle/",
"cracked.com"
] | [
[]
] | |
6ndxhd | How did Romans view northern "barbaric" religions and their practitioners in the century leading up to year 0? | Someone said without a source on another forum that for example Norse gods were seen as Roman gods with different names. (Just an example, idk if there was any contact at the time between Norse people and Rome, or even if Norse-identifying people or gods existed in 100BC.) How did society react to the newly captured re... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6ndxhd/how_did_romans_view_northern_barbaric_religions/ | {
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"This is a contentious question among historians and archaeologists of the Roman period, and I'm not even going to attempt to cover all the facets of the debate in one post. I'll suggest some reading at the end if you want to explore further. \n\n... | [] | [] | [
[]
] | |
4cvj5v | i keep hearing people advocating for equal pay for women. i have yet to hear an argument against this. is there one? if so, what is it? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4cvj5v/eli5_i_keep_hearing_people_advocating_for_equal/ | {
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"I don't think anyone per se is saying that there shouldn't be equal pay, instead I think that the main argument against this is that, looking across the population, women as a whol... | [] | [] | [
[],
[],
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130tfy | Why are most bridges that require the deck to open designed to lift the massive deck into the air? | Wouldn't it consume much less energy if the bridge retracted the opening parts of the deck into its static parts of the deck? (Kind of like a switchblade knife) I have never seen a bridge like I have described and I guess I'm just wondering why. I assume it would require degradation of support in certain areas, but are... | askscience | http://www.reddit.com/r/askscience/comments/130tfy/why_are_most_bridges_that_require_the_deck_to/ | {
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"text": [
"Do you mean something like a [swing bridge](_URL_0_)?\n\nWhat you described really only works for [cantilever bridges](_URL_1_), as the weight of the retracte... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Swing_bridge",
"http://en.wikipedia.org/wiki/Cantilever_bridge"
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[],
[
"http://en.wikipedia.org/wiki/Bascule_bridge",
"http://en.wikipedia.org/wiki/Vertical-lift_bridge"
],
[
"http://youtu.be/7cEe2U6KEk4"
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633rb8 | what are networking software ports and how do they work? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/633rb8/eli5_what_are_networking_software_ports_and_how/ | {
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"Think of software ports like sockets in a electrical outlets. You have a whole bunch of devices e.g a toaster, a TV, a Roku, etc. that get the power from that electrical outlet. Each device will be connected to a different sockets.\n\nLet's say a... | [] | [] | [
[]
] | ||
1gjtay | why is the obama administration supporting the syrian rebels considering they are also being support by al-qaeda? | I understand that the Syrian government is using chemical weapons on their people, but if we train the rebels supported by al-qaeda, aren't we training and arming them to attack us after they overthrow the current Syrian regime? Would the Syrian people be better off being run by a group that is backed by al-qaeda? Th... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1gjtay/eli5_why_is_the_obama_administration_supporting/ | {
"a_id": [
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"text": [
" > How is this any different that the US supporting the Afghan rebels against the Soviets?\n\nThe details may be different but the overarching reasoning is still the same. We have geopolitical goals to gain by an overthrow o... | [] | [] | [
[],
[]
] | |
22tl51 | why does everyone tell me to drink gatorade when i'm sick/hungover? is it better than water? | I know it is supposed to replace electrolytes, but what does that mean? Thank you in advance. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/22tl51/eli5_why_does_everyone_tell_me_to_drink_gatorade/ | {
"a_id": [
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"text": [
"Think of salt placed into water. That forms electrolytes. The salt breaks down into ions. Easier for your body to use these ions to replace diminished supplies of said ions. These ions can also be referred to as electrolyt... | [] | [] | [
[],
[]
] | |
42zhn0 | What Percentage of Each Branch of the WW2 German Military were actually Nazis? | I know that not all German servicemen in WW2 were actually members of the National Socialist party. To my knowledge, the majority were not. I have also heard that the Luftwaffe and Kriegsmarine were generally more ideologically loyal to the party than than the Wehrmacht.
Edit: spelling
| AskHistorians | https://www.reddit.com/r/AskHistorians/comments/42zhn0/what_percentage_of_each_branch_of_the_ww2_german/ | {
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"There are two things that need to be considered here:\n\n1.) Service in the Wehrmacht and party membership\n\nUp until 1944, while serving in the military, party membership was put on hold. That and the fact that the Wehrmacht was an army reliant... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/3xc03h/just_how_much_of_the_wehrmacht_was_dirty/cy3cxs0?context=3"
]
] | |
a504ju | The religion of the Taiping Heavenly Kingdom is popularly described as a form of "Christian mysticism". How Christian were Hong Xiuquan and the Taiping? What did they really believe? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/a504ju/the_religion_of_the_taiping_heavenly_kingdom_is/ | {
"a_id": [
"ebk194a"
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"text": [
"## I: Introduction\n\n### A Historiographical Review\n\nOne of the great things about 19th century China topics is that it’s not just the answer that has changed over time, but also the question. I must apologise for appearing to digress, but it... | [] | [] | [
[]
] | ||
1c1oqg | Have there ever been regions of countries that were forcibly expelled from their parent country? Like an involuntary secession situation. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1c1oqg/have_there_ever_been_regions_of_countries_that/ | {
"a_id": [
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"score": [
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2
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"text": [
"On August 9 1965, with the Singapore delegates not attending, [the Malaysian parliament voted 126 to 0 to expel Singapore from Malaysia](_URL_0_)",
"The Kingdom of Jordan occupied the West Bank after the creation of Isr... | [] | [] | [
[
"http://lcweb2.loc.gov/cgi-bin/query/r?frd/cstdy:@field%28DOCID+sg0033%29"
],
[]
] | ||
2b61j1 | Is there a limit to the speed of cooling? | Given that there is an absolute zero temperature, and any specific material has a constant heat capacity, is there a maximum rate of cooling? If so, how fast is it possible to cool something?
Also, is there any way to cool a person so fast that it can be used as a neutralizing weapon? Kind of like a "chill bomb" or so... | askscience | http://www.reddit.com/r/askscience/comments/2b61j1/is_there_a_limit_to_the_speed_of_cooling/ | {
"a_id": [
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"There is a maximum rate of cooling for an object, but it depends on that object's temperature, volume, surface area, and thermal conductivity, as well as its environment (which must in general be at a lower temperature).\n\n... | [] | [] | [
[],
[]
] | |
1jow9o | In what ways do erogenous zones differ from the rest of the body? Why does stimulating genitalia result in arousal and a sexual response, when for example stimulating a fingertip does not? | askscience | http://www.reddit.com/r/askscience/comments/1jow9o/in_what_ways_do_erogenous_zones_differ_from_the/ | {
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"text": [
"An extra add on question, can other body parts become erogenous zones? Like someone's feet or calves becoming really sensitive, if they are responsive to those fetishes or some... | [] | [] | [
[],
[],
[
"http://www.amazon.com/Human-Sexual-Response-William-Masters/dp/0923891218/ref=sr_1_2?ie=UTF8&qid=1375652477&sr=8-2&keywords=human+sexual+response"
],
[
"http://www.backpain-guide.com/Chapter_Fig_folders/Ch06_Path_Folder/Ch06_Images/06-4%20Radiculopathy.jpg"
]
] | ||
fwx1c6 | What causes some viruses to stay for life (such as HIV or Herpes) but other viruses (such as influenza) can be fought off by the body? | askscience | https://www.reddit.com/r/askscience/comments/fwx1c6/what_causes_some_viruses_to_stay_for_life_such_as/ | {
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"text": [
"That's different for every virus. HIV is a retrovirus, it actually writes itself into the DNA of the cells it befalls. Also, these are immune cells so it is affecting the exact type of cells that would be required to combat it. \nHerpes simplex ... | [] | [] | [
[]
] | ||
8c1bw7 | constitutional crisis | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8c1bw7/eli5_constitutional_crisis/ | {
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"text": [
"A constitutional crisis is a situation where the Constitution (which is the document that sets out the guiding principles for a country) does not have a mechanism to solve a problem.\n\nFor instance in 1841 when William Henr... | [] | [] | [
[],
[]
] | |
hxulk | Are there any practical uses for astrophysics? | Or it is only science for science, without any real world applications?
| askscience | http://www.reddit.com/r/askscience/comments/hxulk/are_there_any_practical_uses_for_astrophysics/ | {
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"text": [
"There are some real-world applications that have come out of astronomy. Communication satellites are pretty obvious. GPS wouldn't work if we didn't take relativity into account. But there are other in... | [] | [] | [
[],
[],
[]
] | |
tctd7 | Was the bombing of Nagasaki necessary? | This isn't a question of whether the use of atomic weapons generally is justified, but, to what extent was the second bombing necessary? How close were the Japanese to surrendering on August 9? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/tctd7/was_the_bombing_of_nagasaki_necessary/ | {
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"text": [
"Stephen Walker's book *Shockwave* is primarily about the Hiroshima bombing, but it details the events that happened between the first and second bombing. He notes that the milita... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Operation_Downfall"
],
[],
[]
] | |
dm7sec | Why/how do fallen leaves stain the sidewalk during autumn? | askscience | https://www.reddit.com/r/askscience/comments/dm7sec/whyhow_do_fallen_leaves_stain_the_sidewalk_during/ | {
"a_id": [
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"text": [
"Carotenoids are the pigment molecules that make leaves look red, yellow, and brown. As cells in the leaves die and break apart, the carotenoids can get washed out by rain and sink into the pavement, leaving a stain."
]
} | [] | [] | [
[]
] | ||
3x7l26 | why newspapers are so huge? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3x7l26/eli5_why_newspapers_are_so_huge/ | {
"a_id": [
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"text": [
"The more content they can cram on the cover, the more likely you'll spot a story that catches the eye. It's pretty much more real estate for stories and ads."
]
} | [] | [] | [
[]
] | ||
1ji9dv | how does google's search by images work? | I tried to Google, but i am not much smarter. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ji9dv/eli5_how_does_googles_search_by_images_work/ | {
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"text": [
"\"Google analyzes the image, creating a mathematical model based on shapes, lines, proportions, colors and other elements. It then matches the model against images already in Google’s index. Google then does page analysis t... | [] | [] | [
[
"http://searchengineland.com/up-close-with-google-search-by-image-82313"
],
[
"http://2.bp.blogspot.com/-rKDfJNUkTfM/T0ulpZFsOII/AAAAAAAAADY/WwvWvGogWmY/s1600/aim.jpg",
"http://www.youtube.com/watch?v=YoRJ1Tq2UQ0"
]
] | |
43hxd0 | What's up with all of the swooning Victorian ladies? Were people really passing out left and right every time they got stressed out? | This isn't just constrained to Victorian England, by the way -- it's just the time and place that first came to mind.
And yes, I know, corsets are not the cause. But if women were fainting often enough that things like smelling salts were well-known and widely available, then why?
| AskHistorians | https://www.reddit.com/r/AskHistorians/comments/43hxd0/whats_up_with_all_of_the_swooning_victorian/ | {
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"I'm by no means an expert in the field, but a lot of make up in the Victorian era contained harmful chemicals which could cause fainting. Mercury, lead, and arsenic found all be found in things from foundations to hair dyes. People did know that... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Maria_Coventry,_Countess_of_Coventry",
"http://www.ncbi.nlm.nih.gov/pubmed/8009431"
]
] | |
bpc0nj | how do big cars end up in malls? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bpc0nj/eli5_how_do_big_cars_end_up_in_malls/ | {
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"text": [
"It’s generally not overtly visible to the public, because they are a bit of eyesores, but places like these all have one or more large bay doors for the purpose of moving in/out large objects and vehicles."
]
} | [] | [] | [
[]
] | |
yxwfj | Did WWII aerial battles kill people and destroy property miles away from combat zones? | I'm a bit of an aviation history nut and like to read about the Battle of Britain, etc. but I've never seen a mention of collateral damage from the huge expenditures of ammunition, both by planes in the air and AA from the ground. (The Battle of Britain may not be the best example as I imagine much of it was fought ove... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/yxwfj/did_wwii_aerial_battles_kill_people_and_destroy/ | {
"a_id": [
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"text": [
"A similar question I've always wondered if what happens if you get shot down and parachute out safely over friendly territory? (eg over Britain)\n\nDid pilots just get up, dust themselves off and catch... | [] | [] | [
[],
[
"http://books.google.co.uk/books?id=VTEykRGtOdcC&dq=Gaskin+2006&source=bl&ots=I2EwU_Lrrh&sig=Kg4Y-fATCaQAyyb3NZymepUIVUs&hl=en&sa=X&ei=qvE8UJ7OFLCN6QGcuIGwDg&ved=0CDsQ6AEwAg"
],
[]
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t54uv | "We are all made of stars", questions for an astronomer or astrophysicist | As I understand it, all elements heavier than Fe are essentially created during a supernova. Fusion in the stellar core ends after it has turned into iron.
My question is this - Do we know what stars/planets will have a higher concentration of heavier elements? Do we know if heavier elements will be on the fringe of ... | askscience | http://www.reddit.com/r/askscience/comments/t54uv/we_are_all_made_of_stars_questions_for_an/ | {
"a_id": [
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" > Do we know what stars/planets will have a higher concentration of heavier elements?\n\nYes! For stars this is called \"metallicity\", because for an astronomer all \"heavy elements\" are metals. This is anything that's not hydrogen or helium. ... | [] | [] | [
[]
] | |
2wjn76 | what happens to spotify songs when they are available for offline listening? | Are they downloaded to my phone? If so what type of crazy compression happens or is it something else? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2wjn76/eli5_what_happens_to_spotify_songs_when_they_are/ | {
"a_id": [
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"text": [
"Yes it's saved to your phone, and it uses a compression scheme similar to any other compressed audio file. As far as the actual file extension and type, it's probably proprietary, and not functional with any other apps, without modification. "
... | [] | [] | [
[]
] | |
7wmirx | Does the language you speak affect the shape of your palate? | I was watching the TV show "Forever", and they were preforming an autopsy, when they said the speaker had a British accent due to the palate not being deformed by the hard definitive sounds of English (or something along those lines) does this have any roots in reality, or is it a plot mover? | askscience | https://www.reddit.com/r/askscience/comments/7wmirx/does_the_language_you_speak_affect_the_shape_of/ | {
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"text": [
"Related question: do languages with larger phoneme inventories have more speakers w... | [] | [] | [
[],
[
"https://www.ncbi.nlm.nih.gov/pubmed/23811472",
"http://cogprints.org/3286/",
"https://trove.nla.gov.au/work/17928687?selectedversion=NBD4131403",
"http://www.worldcat.org/title/reader-in-historical-and-comparative-linguistics/oclc/220270",
"http://pubman.mpdl.mpg.de/pubman/faces/viewIte... | |
4p2r8q | what would happen if a presidential candidate simply did not pick a vice president or was hostile to the idea of a vp? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4p2r8q/eli5_what_would_happen_if_a_presidential/ | {
"a_id": [
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"text": [
"The presidential nominee doesn't actually have to nominate a VP; the two are technically separate ballots. Even if the president doesn't pick a running mate, somebody has to win the election. If there's no majority, the Sena... | [] | [] | [
[],
[]
] | ||
1xjzsc | If asteroid mining becomes a thing, what will happen to Earth if we keep bringing stuff from outside? What will happen when we bring a total of 25% of Earth's mass in "space minerals"? What about 50%? or 300%? | Edit: maybe I phrased it wrong. Let me rephrase it: we find another planet which is similar to Earth, we have [planet-crackers](_URL_0_), we start ripping chunks out of it and bringing it down to Earth. Is there a limit on how much stuff we can bring from outside our planet? | askscience | http://www.reddit.com/r/askscience/comments/1xjzsc/if_asteroid_mining_becomes_a_thing_what_will/ | {
"a_id": [
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"The mass of the *entire* asteroid belt is about .05% the mass of the Earth. Asteroid mining would have no dramatic effect on the mass of the Earth.",
"\nAccording to Wikipedia, 2\\*10^9 tons of iron are mined per year.... | [] | [
"http://deadspace.wikia.com/wiki/USG_Ishimura?file=Deadspacewideship_rotated.jpg"
] | [
[],
[
"http://www.wolframalpha.com/input/?i=2+*+10%5E13+tons+%2F+mass+of+the+earth"
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13ofyy | searching for good books on the the influence en history of the papal states during the middle-ages en renaissance. | a really hard subject to find books on, and have been largely unsuccesfull. So i thought i might try asking here
edit: typo, en = and | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/13ofyy/searching_for_good_books_on_the_the_influence_en/ | {
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"text": [
"Obviously, this is a subject which has been hotly debated among historians. In Germany, there are two major authors who wrote about the popes. Although their work is outdated in many details they are still considered as an important reference. Th... | [] | [] | [
[
"archive.org",
"http://archive.org/details/historypopesfro04pastgoog",
"http://archive.org/details/historyofthepope01pastuoft"
]
] | |
vhzt2 | Since galaxies are made up mostly of empty space how exactly do they "collide"? | I assume the gravity associated with the stars and black holes have something to do with it but I'd like someone who knows to enlighten me. | askscience | http://www.reddit.com/r/askscience/comments/vhzt2/since_galaxies_are_made_up_mostly_of_empty_space/ | {
"a_id": [
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"text": [
"They do not touch each other, yes. But the gravity of both will effect each other by ripping stars out.",
"A similar question recently made a big impact in physics: [this](_URL_0_) talks a lot about what happens to the... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Bullet_cluster"
]
] | |
1cise0 | How hard would it be to lift your arm inside an event horizon? | askscience | http://www.reddit.com/r/askscience/comments/1cise0/how_hard_would_it_be_to_lift_your_arm_inside_an/ | {
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"text": [
"That's an interesting question, because every direction within the radius of the event horizon of a black hole (which I assume you're referring to) leads towards the singularity. I have no answer, though, just a thought expe... | [] | [] | [
[],
[]
] | ||
2rkl5t | the need for metered data plans on cellular networks. | I'm curious if there's a physical / spectrum limitation that the cellphone providers are trying to overcome, or if it's a "We are the cell providers, and we want to do this. Deal with it." thing. Perhaps a little bit of both? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2rkl5t/eli5_the_need_for_metered_data_plans_on_cellular/ | {
"a_id": [
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"text": [
"The radio spectrum that cell providers operate on is extremely limited. The industry is having a lot of trouble keeping up with demand for fast data because the entire usable spectrum is already licensed off to things like TV and radio. Providers... | [] | [] | [
[]
] | |
4l9vj6 | Is it theoretically possible to create a sound so loud that its waves could be physically dangerous, or even lethal, to a person? | askscience | https://www.reddit.com/r/askscience/comments/4l9vj6/is_it_theoretically_possible_to_create_a_sound_so/ | {
"a_id": [
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"text": [
"Absolutely. I mean, there are always the warnings against listening to music that's too loud because it can damage your ears, but really any shockwave is fundamentally the same as a sound wave. Explosives produce these kin... | [] | [] | [
[],
[]
] | ||
77oqwh | how does food sober you up and lessen the effect of pharmaceutical drugs? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/77oqwh/eli5_how_does_food_sober_you_up_and_lessen_the/ | {
"a_id": [
"doniulg",
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3,
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"text": [
"That's a myth, food does NOT sober you up. \n\nDrinking on a full stomach can slow the absorption of alcohol, but eating food while you're drunk will NOT make you less drunk.",
"It doesn't sober y... | [] | [] | [
[],
[],
[]
] | ||
1eceko | Grasping Micro-Evolution. But how can I come to terms with Macro-Evolution? | askscience | http://www.reddit.com/r/askscience/comments/1eceko/grasping_microevolution_but_how_can_i_come_to/ | {
"a_id": [
"c9yur6m"
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"score": [
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"text": [
"* Species designations are arbitrary and human-made. We will probably always declare the current state of humanity to be *homo sapiens*, even if millions of years from now we're significantly different.\n\n* As far as we know, history, and religi... | [] | [] | [
[]
] | ||
2nm594 | To what extend were the United Nations involved in the Falklands War? | Did the UN organise peace talks immediately, did they condemn the British counter attack? Did they ever consider using their own troops? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2nm594/to_what_extend_were_the_united_nations_involved/ | {
"a_id": [
"cmezhf4"
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"score": [
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"text": [
"The UN has no troops. Any binding Security Council resolutions preventing Britains reconquest would have been negated by Britains veto powers, never mind the possible French and US veto powers.\n\nThe UN DID pass resolution 502. but that was fair... | [] | [] | [
[
"http://www.un.org/en/ga/search/view_doc.asp?symbol=S/RES/502(1982)"
]
] | |
9dl970 | What is the most accurate estimate of the death toll from the 1932-1933 famine in the Soviet Union? Were those deaths a result of Stalin's collective farming inititiatives or environmental factors like natural disasters? | [deleted] | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9dl970/what_is_the_most_accurate_estimate_of_the_death/ | {
"a_id": [
"e5igu2f"
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"score": [
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"text": [
"[This](_URL_0_) is an answer that I wrote recently on the question of the intentionality of the 30s famines in the Soviet Union. \n\nThe long and short being that 1) the famines *were* caused by government policies, 2) a few million people starve... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/8xazcy/western_propaganda_about_the_soviet_union/e226hkz/"
]
] | |
18s85e | What is the probability of shuffling a random deck of cards into new deck order? | Also, how long would it take for this to occur? | askscience | http://www.reddit.com/r/askscience/comments/18s85e/what_is_the_probability_of_shuffling_a_random/ | {
"a_id": [
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"text": [
"Without jokers, the probability is 1 in 52! or 1 in about 8.07 x 10^67 . And, if I mathed correctly, it would take about 5.59 x 10^67 shuffles for that to occur on average.",
"As a follow on question, how many shuffles d... | [] | [] | [
[],
[]
] | |
1hhh6v | Measuring Bending of Space for Einstein's General Relativity | I was watching a history channel documentary on Einstein. They talked quite a bit about how astronomers were trying to photograph a solar eclipse. I get up to that, because the Sun's light is obscured, but not the stars that appear behind it.
What I don't understand is how astronomers are able to measure the bending o... | askscience | http://www.reddit.com/r/askscience/comments/1hhh6v/measuring_bending_of_space_for_einsteins_general/ | {
"a_id": [
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"score": [
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"text": [
"When a light ray bends, what's actually happening is the ray is following a different path (at an angle). Therefore, its target would be a different point on your photograph. Now you'd take two photographs of the stars: one without the sun prese... | [] | [] | [
[
"http://sunearthday.nasa.gov/2006/images/news_einstein2.jpg",
"http://en.m.wikipedia.org/wiki/Einstein_and_Eddington"
]
] | |
7krd9j | why do people tend to touch the wound immediately after injury? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7krd9j/eli5_why_do_people_tend_to_touch_the_wound/ | {
"a_id": [
"drglnfp"
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"score": [
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"text": [
"1) It's nice to know that whatever body part that got injured is still there in it's entirety, so we feel to check and assess the damage\n\n2) To protect against a second strike in the same location. I mean, we defended it so poorly it got hit o... | [] | [] | [
[]
] | ||
fgcr7m | what is law of attraction and can there be any convincing (logically or scientifically) grounded explanation about how it works? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fgcr7m/eli5_what_is_law_of_attraction_and_can_there_be/ | {
"a_id": [
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"score": [
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"text": [
"Oh gods, lemme try but no guarantees.\n\n\nImagine the world is made up of interactions, because it is.\n\nWhat is an interaction? It is anything that can help us see a field.\n\nWhat is a field? It is an imaginary area arou... | [] | [] | [
[],
[]
] | ||
4b3wvq | why is the life expectancy of foxes so short? | It baffles me its only 3-6 years. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4b3wvq/eli5_why_is_the_life_expectancy_of_foxes_so_short/ | {
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"Essentially nature is a cruel bastard, and life is hard. In th... | [] | [] | [
[],
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"http://www.thefoxwebsite.net/urbanfoxes/urbanhealth"
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1v2yku | how are tv shows and movies able to film on the streets without people looking at them? | For example, I just watched a promo for the new Tonight Show with Jimmy Fallon. He was in 70s attire and dancing to the Bee Gees while walking down the street. At least 100 people passed him and no one in the foreground or background turned their head. How are movie crews able to do this? Were they all hired? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1v2yku/eli5_how_are_tv_shows_and_movies_able_to_film_on/ | {
"a_id": [
"ceo77p7",
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"score": [
2,
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"text": [
"Most of it is filmed in back lot theaters, yes, they are usually actors",
"In addition to filming on closed backlots, They close off large sections of street and hire extras to play passers-by. In certain neighborhoods i... | [] | [] | [
[],
[]
] | |
p27fg | Terraforming to curb emissions. Can it be done? | Terraforming with massive atmospheric processors is often used in science fiction as a way of making alien worlds habitable.
Given that we seem incapable of getting world governments to agree to reducing carbon emissions in a timely manner, and we seem to be cutting down more trees than we are planting, could there b... | askscience | http://www.reddit.com/r/askscience/comments/p27fg/terraforming_to_curb_emissions_can_it_be_done/ | {
"a_id": [
"c3lw0jo"
],
"score": [
4
],
"text": [
"The term you're looking for is \"Carbon capture and storage.\""
]
} | [] | [] | [
[]
] | |
dxw7ze | how do white blood cells destroy large parasites, such as parastic nematodes, etc? | I think this is the right subreddit for a quick question. I can't find a straight, definitive answer online. Anyone know? Do they secret some sort of dissolving agent? They can't phagocytize them as they are too big, so how do they combat multicellular organisms as mere single cells? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dxw7ze/eli5_how_do_white_blood_cells_destroy_large/ | {
"a_id": [
"f7x119r"
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"score": [
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"text": [
"Yay finally something in my field:\n\nLong story short: we suck at dealing with big parasites. Some of our immune cells try to shoot them with toxic molecules (granules) but the parasite doesn’t care that much. We also try to recruit some tough ... | [] | [] | [
[]
] | |
ncght | How far away would I have to be in order for a bullet to have no impact on me? | A hand gun or machine gun bullet. If I'm 10 miles away for instance, will the impact be negligible? | askscience | http://www.reddit.com/r/askscience/comments/ncght/how_far_away_would_i_have_to_be_in_order_for_a/ | {
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"text": [
"A bu... | [] | [] | [
[],
[
"http://hypertextbook.com/facts/2002/DomnaAntoniadis.shtml"
],
[],
[],
[
"http://www.sportsmansguide.com/Outdoors/resource/remington_charts/cf_ballistics.pdf"
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[],
[],
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"http://hypertextbook.com/facts/2002/DomnaAntoniadis.shtml"
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[],
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"http://www.sportsmansg... | |
2jpmvm | if i look through a telescope at a planet 500 light years away, i am seeing what occurred on that planet 500 years ago. if i begin to travel towards that planet at the speed of light and maintain my telescope on it, what will happen to what i see? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2jpmvm/eli5_if_i_look_through_a_telescope_at_a_planet/ | {
"a_id": [
"cldwb3w",
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"score": [
4,
2
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"text": [
"The light emitted would be hitting your eyes faster as you approached it. You'd be seeing more recent information the closer you got to it until you were \"live\" so to speak. Any changes that occur would be visible as you g... | [] | [] | [
[],
[]
] | ||
4cao6r | Why did the United States end up treating the territories wrested from Spain in 1898 so differently in the ensuing decades? | Following the Spanish-American War, the US now controlled Cuba, Puerto Rico, and the Philippines, but it seems that each one was treated quite differently in how they were handled. Cuba was given (nominal) independence quite quickly, while the Philippines were slowly walked along that path for many decades, and Puerto ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4cao6r/why_did_the_united_states_end_up_treating_the/ | {
"a_id": [
"d1p1ogn"
],
"score": [
2
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"text": [
"Were you still looking for a response? If so I can answer some of this question (mostly about Cuba)"
]
} | [] | [] | [
[]
] | |
1i1bcr | how does the police track and bust drug dealers? | ***Obligatory side note: I am by no means a drug dealer and I'm not asking for applicable information, I'm just curious at how it's done and how effective their methods are*** | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1i1bcr/eli5_how_does_the_police_track_and_bust_drug/ | {
"a_id": [
"cb009xo"
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"score": [
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"text": [
"The police rely on tips from Joe Public and their own observation skills to target street-level dealers. When they have a street dealer in custody, or \"on the carpet\" interrogating them, the police offer amnesty [or a lesser prison term] for n... | [] | [] | [
[]
] | |
1wz2m9 | Did Catharism as a religion survive the Albigension Crusade and the inquisition following it? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1wz2m9/did_catharism_as_a_religion_survive_the/ | {
"a_id": [
"cf6p4kv"
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"text": [
"I'm going to answer this in two parts: questions of the existence of so-called Cathars, and then the survival of Catharism. \n\n**The Existence of Cathars**\n\nFor those who do not know much about the subject, the Cathars in traditional history w... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Donatism",
"http://en.wikipedia.org/wiki/Peter_Waldo",
"http://en.wikipedia.org/wiki/Arianism",
"http://www.reddit.com/r/AskHistorians/comments/1u1vhm/how_important_was_the_book_of_john_the_evangelist/",
"http://www.reddit.com/r/AskHistorians/comments/1uzjhe/manic... | ||
ba2lmm | - why do builders make up ground and then dig it out again? | I might not be explaining this very well but here goes. There's a new industrial unit going up near me. The builders moved in a few days ago and put down a layer of hard core stone. Probably only 6" deep. But then they came along with a digger and dug out the footings *through* the hard-core they'd just put down.
Wha... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ba2lmm/eli5_why_do_builders_make_up_ground_and_then_dig/ | {
"a_id": [
"ek8vzrc",
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"score": [
4,
4
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"text": [
"May be that the hardcore was mistakenly laid before the footings, or that the hardcore was to help support the digging machines better. Without knowing the details of the land/area, we can only guess.",
"Big chunks of ro... | [] | [] | [
[],
[]
] | |
g02r1z | what does it mean when scientists say “an eagle can see a rabbit in a field from a mile away”. is their vision automatically more zoomed in? do they have better than 20/20 vision? is their vision just clearer? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/g02r1z/eli5_what_does_it_mean_when_scientists_say_an/ | {
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"f... | [] | [] | [
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22ez0k | Does bodyweight correlate with cancer probability? | Does the probability/risk of getting a variation of cancer go up with the bodyweight of a human?
In my layman's understanding, more mass = more cells = more cells which can "misbehave" and become cancerous would mean that the more mass (fat or muscle), the higher the risk. Is this the case?
I have doubts about this ... | askscience | http://www.reddit.com/r/askscience/comments/22ez0k/does_bodyweight_correlate_with_cancer_probability/ | {
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2
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"text": [
"Obesity increases the [risk of certain cancers](_URL_0_)\n\ndoes it correlate? No idea. BMI is not a good variable to correlate to\n\nThe big question we real... | [] | [] | [
[
"http://www.cancer.gov/cancertopics/factsheet/Risk/obesity"
],
[
"http://m.cancer.org/cancer/cancercauses/dietandphysicalactivity/bodyweightandcancerrisk/body-weight-and-cancer-risk-effects"
],
[],
[],
[
"http://www.cancer.gov/cancertopics/factsheet/Risk/obesity"
]
] | |
4kqgbk | Who were the Volga Germans? == | Why did they migrate to Russia? Where did they come from? What sort of role did they have in the Russian Empire and Soviet union? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4kqgbk/who_were_the_volga_germans/ | {
"a_id": [
"d3gyzlc"
],
"score": [
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"text": [
"From an [earlier answer](_URL_0_)\n\nThe German migration into Russia started during the eighteenth century and the German community in Russia evolved into four basic groups. The largest community was around the Volga river basin, followed closel... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/319ia2/how_was_the_german_minority_in_russia_treated/"
]
] | |
dyfjoq | support vector regression and support vector machine | I’m struggling to understand these two topics of machine learning, I think is mainly because I’m looking it from the math side first (and it’s a little complex since I’m new). So I’d like to someone explains these 2 important concepts like I’m five. Thanks! | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dyfjoq/eli5_support_vector_regression_and_support_vector/ | {
"a_id": [
"f80wcwn"
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"score": [
2
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"text": [
"Assume two labels for data (y in {-1,1}, for example). Support vectors are the vectors that best separate data in the feature space (e.g. the space defined by the covariates used to predict the labels) by maximizing the distance from the vector t... | [] | [] | [
[]
] | |
o66oc | In a survival situation without water, are you better off eating or not eating food? | Say you are stranded on a mild desert (no water at all), and the only thing you have are dried meat/fruits, nuts, and bread. Would you be better off not eating these things because it will dehydrate you faster or are we better off eating to sustain our energy level? | askscience | http://www.reddit.com/r/askscience/comments/o66oc/in_a_survival_situation_without_water_are_you/ | {
"a_id": [
"c3eop0p"
],
"score": [
3
],
"text": [
"eating, you still need to intake nutrients, and there is almost always a method to gather water: condensation trap, collect rainwater, etc.\n\nbut if there is truly no water it doesn't really matter; you'll be dead within ~~a week~~ 72 hours max.... | [] | [] | [
[]
] | |
380zf2 | how does one multithread a program and why is it so difficult? | I was reading [this](_URL_0_) and it made me wonder why multithreading a program is so hard. So, why is it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/380zf2/eli5_how_does_one_multithread_a_program_and_why/ | {
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2,
7,
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"text": [
"basically when you multithread, you break up the program and have parts of it run in parallel. sometimes, that's easy to do, other times it's hard. a lot of times, you need a tim... | [] | [
"http://www.reddit.com/r/dwarffortress/comments/37yg5s/urist_mckroati_is_crying_257x257_10000yr_worldgen/crqyo8i"
] | [
[],
[],
[],
[]
] | |
3vfz1w | why can't we write straight along the lines of lined paper if when we aren't looking at it? | If we're watching what were writing we can easily write straight along the lines of lined paper. However, if we look away from the paper and keep writing it doesn't follow. Why doesn't muscle memory or anything keep this from happening? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3vfz1w/eli5_why_cant_we_write_straight_along_the_lines/ | {
"a_id": [
"cxna1np"
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"score": [
3
],
"text": [
"Pretend you were playing Operation. While looking, you have a constant view of the metal edges and can avoid them. Even if you're really good at that, once you look away you lose that reference between your hand, the tweezers, and the edges. You ... | [] | [] | [
[]
] | |
39k8jz | why is looking at stars like looking back in time? | Not sure I understand exactly why, when we look at the sky, it is a sky from many years ago... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/39k8jz/eli5_why_is_looking_at_stars_like_looking_back_in/ | {
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"score": [
7,
4,
3,
3,
2,
2,
2
],
"text": [
"Light is not infinitely fast. It's speed is limited to the speed of light, about 300 000 000 m/s.\n\nThus, if an o... | [] | [] | [
[],
[
"http://www.reddit.com/r/explainlikeimfive/comments/39183j/eli5_why_looking_further_into_space_is_looking/"
],
[],
[],
[],
[],
[]
] | |
2ljcf4 | why do we still use gunpowder in ammunition instead of other explosives that have a much greater energy to volume ratio? | Wouldn't it save a huge amount of weight and make weapons much more compact if the rounds were much smaller? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ljcf4/eli5_why_do_we_still_use_gunpowder_in_ammunition/ | {
"a_id": [
"clvbkjx",
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"score": [
10,
6
],
"text": [
"No matter what explosive we use in guns, we'll still call it \"gunpowder\" even if it's not a powder. It's just a name that stuck.\n\nBut we've actually changed the formula several times. With small arms, you actually wan... | [] | [] | [
[],
[
"http://www.thegunzone.com/m1akb/762d20.html"
]
] | |
6apkyv | Can someone give me an understanding of the Deluge? And why was Polish–Lithuanian Commonwealth attacked from every Angle? | I was doing some reading of Crimean Khanate, which was the sole true ally of the Polish–Lithuanian Commonwealth during this troubled decades of post 1650s (at the same time an enemy during the early Khmelnytsky Uprising) , but I was kinda taken back by the Swedish invasion. By the way isn't John II Casimir part of the ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6apkyv/can_someone_give_me_an_understanding_of_the/ | {
"a_id": [
"dhhcimc"
],
"score": [
2
],
"text": [
" > but I was kinda taken back by the Swedish invasion. By the way isn't John II Casimir part of the Vasa family?\n\nLong story short, the first Vasa to become ruler of Polish–Lithuanian Commonwealth, Sigismund had a very strong claim on Swedish t... | [] | [] | [
[]
] | |
64b50c | why did going into world war ii dramatically propel the u.s. economy, as opposed to ruining it like the british economy? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/64b50c/eli5_why_did_going_into_world_war_ii_dramatically/ | {
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4,
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2
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"text": [
"The US had virtually *none* of it's infrastructure damaged at all during WWII. Compare that to England (and, in fact, most of Europe) being *devastated*. The... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
504hlh | why were taxes in the us in the early 20th century 90%? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/504hlh/eli5_why_were_taxes_in_the_us_in_the_early_20th/ | {
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[],
[
"http://taxfoundation.org/sites/taxfoundation.org/files/docs/fed_individual_rate_history_adjusted.pdf",
"http://www.taxpolicycenter.org/statistics/source-revenue-share-gdp"
],
[
"https://en.wikipedia.org/wiki/Hauser%27s_law"
],
[],
[
"https://www.reddit.com/r/explainlikeimfive/comm... | |
13hz9w | My grandmother met Mussolini. There was a photo, but her father destroyed it. How would I go about searching for this or anything relating to it? | My 85 year old Grandmother as a child in Italy met Mussolini. She said there was a nation wide school competition in which you had to write an essay or a poem (I forget which, I'll have to ask her the specifics) or a short piece on why you love Italy (something like that). Apparently my nan won and the prize was awarde... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/13hz9w/my_grandmother_met_mussolini_there_was_a_photo/ | {
"a_id": [
"c745x9a",
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"score": [
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"text": [
"I would suggest trying the local archive services in the area she lived at the time. Even if the picture no longer exists you might find information in a local newspaper or something. The people at the archives should be abl... | [] | [] | [
[],
[]
] | |
11iztj | How tall were the Mongolians of the Middle Ages? | I've tried to find a reliable source for this information but I mostly come upon yahoo answer type websites and I don't buy all the evidence that is presented. When I looked for info on Genghis Khan his height was cited as low as 5'0" and as high as 6'2". Anyways here is the evidence that I can recall.
Evidence for ta... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/11iztj/how_tall_were_the_mongolians_of_the_middle_ages/ | {
"a_id": [
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"score": [
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"text": [
"How exactly does \n\n > -Persistent history of tribal warfare\n\n > -Broad, open landscapes with abundant resources\n\ncorrelate to evolutionary taller people?",
"Not my geographic area of expertise, but a [recent paper... | [] | [] | [
[],
[
"http://www.sciencedirect.com/science/article/pii/S0305440312001860"
]
] | |
15zpzu | ...why don't i remember mostly anything before the age of 4? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/15zpzu/eli5why_dont_i_remember_mostly_anything_before/ | {
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"score": [
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"text": [
"After just simply googling this I came to know that there are four main reasons why you don't remember your childhood.\n**A)**Infants brains just are not developed enough to be able to make long-term me... | [] | [] | [
[],
[],
[]
] | ||
bjaduc | why does it seem like plants grow dramatically overnight? | Hey there! I really hope this comes out the way I'm thinking.
I've started growing a veggie garden- which I've done before. I've noticed that plants go from 0-100 real quick. One evening I can't see anything sticking up out of the ground and the next evening its sprouted and very noticeably coming up out of the ground... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bjaduc/eli5_why_does_it_seem_like_plants_grow/ | {
"a_id": [
"em6mzj2"
],
"score": [
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"text": [
"The seed comes with whatever nutrients the plant needs in the correct ratios because the seed was grown purposefully to get the next plant started. And since the seedling can't get any nutrients unless it gets access to the sun, water, and soil, ... | [] | [] | [
[]
] | |
3f6435 | Why does mass = (permeability of free space)*(permitivity of free space)*(Energy)? (Math and further description in post) |
##Edit: I responded to another comment with this, and I'm including it here because I think it really captures the essence of my question:
> What is the logic behind it? I guess you could restate the question as, "why is mass defined as m=E/c^2 "? Its the same thing, but I'm curious as to why it's true. **What i... | askscience | http://www.reddit.com/r/askscience/comments/3f6435/why_does_mass_permeability_of_free/ | {
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"ctlo7nm"
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"score": [
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"text": [
"Permitivity and permeability are not good constants. They simply reflect the incompleteness of our understanding of what charge actually is at the time Maxwell's equation were discovered. \n\nNo modern physics is formulated in terms of these con... | [] | [
"http://i.imgur.com/R1JjhmL.jpg"
] | [
[
"https://en.wikipedia.org/wiki/Vacuum_permittivity#Redefinition_of_the_SI_units"
]
] | |
2n4wsz | where did the generic doorbell/clock melody originate? why is it used around the world? | [This](_URL_0_) is the melody( apparently called West Minister ). | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2n4wsz/eli5_where_did_the_generic_doorbellclock_melody/ | {
"a_id": [
"cmacrcf"
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"text": [
"It almost certainly got its popularity from being what the [Westminster Clock Tower (“Big Ben”) plays](_URL_0_), which was inspired by the church of Saint Mary the Great in Cambridge. Where it came from before that I don't think anyone knows, but... | [] | [
"http://youtu.be/oLOS3VYliUs?t=10s"
] | [
[
"https://en.wikipedia.org/wiki/Westminster_Quarters",
"https://en.wikipedia.org/wiki/Change_ringing"
]
] | |
j8hw0 | If it weren't for the mass extinction, would dinosaurs evolve into what would seem to be modern day lizards, etc, or could they devlop thought patterns similar to humans? | Dinosaurs would have had close to 65 million years to evolve. Could they have developed thought patterns and movements closely associated with modern day humans? Or would they just be big animals? | askscience | http://www.reddit.com/r/askscience/comments/j8hw0/if_it_werent_for_the_mass_extinction_would/ | {
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"score": [
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"text": [
"Just so you know - Dinosaurs were on the earth for about 160 million years, so they had alre... | [] | [] | [
[],
[
"http://www.abc.net.au/science/slab/dinobird/story.htm"
],
[],
[],
[],
[
"http://www.abc.net.au/science/slab/dinobird/story.htm"
],
[],
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] | |
bfn9lq | why when you're outside and then go inside, you can't see properly for a while | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bfn9lq/eli5_why_when_youre_outside_and_then_go_inside/ | {
"a_id": [
"elew3dd"
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"score": [
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"text": [
"There’s a chemical inside your eye (who’s name escapes me at the moment). It helps you see. It is “bleached” in light, and it takes a while to produce more. So when you go from a sunny outside to a shaded inside, you don’t have enough of this che... | [] | [] | [
[]
] | ||
167r8n | If we are in space and we do not know the speed of any object within our sight, how can we know how fast we are going? | askscience | http://www.reddit.com/r/askscience/comments/167r8n/if_we_are_in_space_and_we_do_not_know_the_speed/ | {
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"c7tqu5g",
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"score": [
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"text": [
"We know our speed relative to various other objects in space.",
"Though it sounds cryptic, basically \"how fast do you want to be going?\"\n\nEven if you see another object in space, how do you know... | [] | [] | [
[],
[],
[]
] | ||
6bmdlb | saffron's high price stems from how rarely it blooms, how come people don't just extract the saffron from the flower when it isn't blooming? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6bmdlb/eli5saffrons_high_price_stems_from_how_rarely_it/ | {
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"dhnthl4",
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"text": [
"Saffron is the dried blooms of the plant. They literally do not exist when the plant is not blooming as they have not formed yet. What you are asking is the equivalent of \"why don't they extract apple... | [] | [] | [
[],
[],
[]
] | ||
11t6zv | what is the status/nature of lance armstrong's guilt? | I have not paid attention to this scandal, because for many years I assumed the accusations were false, and based in jealousy rather than fact. It appears the internet is FREAKING OUT about Lance Armstrong, with many people insisting that the evidence is there. So I ask you to please explain
1. Is it now unreasonable ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/11t6zv/eli5_what_is_the_statusnature_of_lance_armstrongs/ | {
"a_id": [
"c6pdfi3",
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"score": [
2,
6
],
"text": [
"The USADA, the government agency in charge of catching people doing that in the US, wrote a big long document that they think shows he's guilty, and suggested that he be stripped of all his records and titles. They have a ve... | [] | [] | [
[
"http://www.bbc.co.uk/sport/0/cycling/20008520"
],
[]
] | |
4a7486 | Need help identifying German WWII bring backs | My great uncle pulled these out tonight and doesn't know much about them. We are curious about what these medals are and what the stamp on the armband means. Any help is appreciated!
_URL_0_ | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4a7486/need_help_identifying_german_wwii_bring_backs/ | {
"a_id": [
"d0y3tiz"
],
"score": [
3
],
"text": [
"Ok. First picture :\n\n1. The one on your fingertips : [Heeresflakabzeiche](_URL_1_) : Awarded for soldiers being part of a Flak (Anti-Aircraft-Cannon) unit that shot down 5 or more allied planes.\n\n2. The one below it saying \"D.D.A.C.\" : The ... | [] | [
"m.imgur.com/a/Nj86Q"
] | [
[
"https://en.wikipedia.org/wiki/Iron_Cross",
"https://en.wikipedia.org/wiki/Army_Anti-Aircraft_Badge",
"https://en.wikipedia.org/wiki/Panzer_Badge"
]
] | |
1cd2i0 | Would it technically be possible, through an absurdly strict diet, be able to eliminate urination and defecation? | Basically, my question is as follows. If you were able to know the nutritive needs of your body to absurd detail, and consume a diet that could be absorbed with near 100% efficiency, would be it possible to very nearly eliminate the need to, uh, eliminate? What happens when people end up on long term cleanses that have... | askscience | http://www.reddit.com/r/askscience/comments/1cd2i0/would_it_technically_be_possible_through_an/ | {
"a_id": [
"c9fbsvc",
"c9fgm0t",
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"score": [
226,
15,
4
],
"text": [
"You need to urinate to excrete (amongst other things) salts and urea, which is the byproduct of amino acid metabolism. Together, this translates to (on average) about 600milli-osmoles of solute per d... | [] | [] | [
[],
[
"http://www.abc.net.au/science/articles/2012/07/24/3549931.htm"
],
[]
] | |
38wiyv | how the solar system planets rotates around the sun | This is probably a stupid question, and i cant seem to word it correctly in order to google it. How do planets within our solar system revolve around the sun? and what i mean by this is does each planet have a different path within their so called space? or does all planet follow the same alignment? like does earth mar... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/38wiyv/eli5_how_the_solar_system_planets_rotates_around/ | {
"a_id": [
"crydjlu",
"crydn78"
],
"score": [
9,
5
],
"text": [
"I think what you mean to ask is \"do the planets orbit in the same plane\", and the answer is yes, they do. All the planets formed from a rotating disc of material around the sun, and since that disc was flat the planets all... | [] | [] | [
[],
[
"https://www.youtube.com/watch?v=MTY1Kje0yLg"
]
] | |
6cdq9z | Why is Vaseline, a petroleum derived product, good for your skin? Aren't petroleum and plastics bad for your body? | [deleted] | askscience | https://www.reddit.com/r/askscience/comments/6cdq9z/why_is_vaseline_a_petroleum_derived_product_good/ | {
"a_id": [
"dhtyq5c",
"dhuc39t"
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"score": [
29,
4
],
"text": [
"The keyword is \"derived.\" The medication Integrilin is derived from rattlesnake venom, but obviously they are not equally toxic. And many plastics are completely bio-inert. Although raw petroleum is toxic and would not ma... | [] | [] | [
[],
[]
] | |
4is70b | why have christianity and islam been so successful? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4is70b/eli5why_have_christianity_and_islam_been_so/ | {
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"d30nft4",
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9,
3
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"text": [
"They are both religions that place a heavy emphasis on evangelizing and spreading the word, and were both adopted by peoples who were highly mobile, both as traders and invaders.",
"Christanity was... | [] | [] | [
[],
[],
[]
] | ||
11ygpa | female ejaculation [nsfw] | So, I'm not five. Just explain *like* I'm five.
I'm a girl and even I just don't get it. Can someone explain/testify to what it's like? Occasionally I'll arbitrarily decide that squirting is just a big rouse by the porn industry and that these chicks are all pulling our legs/peeing all over us.
Do you cum every time ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/11ygpa/eli5_female_ejaculation_nsfw/ | {
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"score": [
3,
33,
2,
2
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"text": [
"Also, follow up question: Why are some women not able to experience an orgasm while having sex but are able to easily do so while masturbating? ELI5, please.",
"I've heard con... | [] | [] | [
[],
[
"http://www.reddit.com/r/AskReddit/comments/db6vq/girls_that_squirtweird_gross_or_hot/"
],
[
"http://www.reddit.com/r/askscience/comments/zalao/what_is_happening_when_a_women_ejaculates_or/"
],
[]
] | |
2uunw9 | if i lift appropriately heavy weights i really can't do any more than say 10. how come if i then wait just 30 seconds i can squeeze out a few more? | What happens to my muscles to get some strength back so quickly? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2uunw9/eli5_if_i_lift_appropriately_heavy_weights_i/ | {
"a_id": [
"cobvkc2"
],
"score": [
7
],
"text": [
"Your body needs to breathe if you will. Your muscles and every other cell in your body needs oxygen (this is why we breathe). Normally your cells use aerobic respiration(making energy by using oxygen) to power your muscles for the reps but if you... | [] | [] | [
[]
] | |
pkwsc | Why does silver make a distinctive ringing sound when struck? | It's a trick used to identify coins... what gives silver this property and what other metals might sound similar? | askscience | http://www.reddit.com/r/askscience/comments/pkwsc/why_does_silver_make_a_distinctive_ringing_sound/ | {
"a_id": [
"c3q6uui",
"c3q6xeg"
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"score": [
2,
3
],
"text": [
"Different elastic properties of different materials result in different frequencies being output when struck",
"I don't know the answer to your question, but I do know that silversmiths use the ringing tone of silver to ... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Annealing_temperature"
]
] | |
1ib4le | Falling from a plane | Hi, recently I watched a movie and there's something that's been bugging me since. If someone or something falls from a plane, does the fall looks as if it's directly downward due to the inertia? I suppose the body has the same speed as the plane, or, the body falls behind the plane because it's slowed down by air res... | askscience | http://www.reddit.com/r/askscience/comments/1ib4le/falling_from_a_plane/ | {
"a_id": [
"cb2smtv",
"cb2sqb1"
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"score": [
3,
2
],
"text": [
"Jumping out of a plane you will initially have the same forward speed, but will slow down pretty quickly to falling more or less straight down.",
" > I suppose the body has the same speed as the plane, or, the body falls... | [] | [] | [
[],
[]
] | |
21azrt | Is the human race becoming more homogeneous? | askscience | http://www.reddit.com/r/askscience/comments/21azrt/is_the_human_race_becoming_more_homogeneous/ | {
"a_id": [
"cgbosk3"
],
"score": [
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],
"text": [
"There is a common misconception that recessive traits would eventually disappear from a population, leading to a homogeneity. Some people, for example, claim that if humans keep breeding inter-racially, there won't be any more red-haired or blond... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Hardy-Weinberg_principle"
]
] | ||
4hs9oe | how can surgeons attach all the capillaries around the new heart during heart transplant? | I get that the aorta, pulmonary vessels, and vena cava are large enough to stitch together, but how can surgeons stitch together all the little capillaries that supply power to the heart in the first place? How can they stitch up all of these vessels in a timely manner? Seems pretty incredible to me... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4hs9oe/eli5_how_can_surgeons_attach_all_the_capillaries/ | {
"a_id": [
"d2rw3gs"
],
"score": [
3
],
"text": [
"The heart is fed by the coronary arteries (right and left). These split directly off the base of the aorta (the main artery that leaves the heart to bring blood to the rest of the body); the heart feeds itself first. There are no small blood ve... | [] | [] | [
[]
] | |
1z8spu | Since English is so widespread, how likely is it that it will suffer the same fate as Latin and "die out"? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1z8spu/since_english_is_so_widespread_how_likely_is_it/ | {
"a_id": [
"cfrkvdq"
],
"score": [
17
],
"text": [
"Latin didn't die out, it evolved into various successor languages (the Romance languages). English will most likely continue evolving until it becomes something that would be incomprehensible to us today, though that probably won't be for severa... | [] | [] | [
[]
] | ||
1hazx4 | How does IV calcium protect the heart in hyperkalaemia? | It makes sense that hyperkalaemia would tend to depolarise the membrane potential and I think calcium is supposed to prevent this/alter the threshold although I can't figure out the mechanism. Calcium has an opposite effect to potassium in the action potential so it would seem to make things worse. Does it act inside o... | askscience | http://www.reddit.com/r/askscience/comments/1hazx4/how_does_iv_calcium_protect_the_heart_in/ | {
"a_id": [
"cathha8",
"caskveb"
],
"score": [
2,
5
],
"text": [
"This article provides a good summary of what's going on in hyperkalaemia and also the mechanism for calcium supplementation.\n\n_URL_1_\n\n_URL_0_ - figure from the paper showing the aciton potential changes",
"It seems ... | [] | [] | [
[
"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1413606/figure/f3-10/",
"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1413606/"
],
[]
] | |
92h9f3 | British/American Accents vs Spain/Spanish Accents? | Why are British and American accents so different while the accents from Spain and Latin American sound fairly similar | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/92h9f3/britishamerican_accents_vs_spainspanish_accents/ | {
"a_id": [
"e35w4xz",
"e3675em"
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"score": [
6,
4
],
"text": [
"Isn't this not true? Doesn't Mexican Spanish use different verb tenses than Spain Spanish? \n\nThe sounds and spellings of American vs British English are different but nothing so important as conjugations and declensions.",... | [] | [] | [
[],
[]
] | |
2zma4b | what are the big controversies with putin? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2zma4b/eli5_what_are_the_big_controversies_with_putin/ | {
"a_id": [
"cpk7qhr",
"cpk9g4p"
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"score": [
5,
14
],
"text": [
"He's former KGB, his enemies have a habit of suffering acute heavy metal poisoning (and not the musical kind), he's connected to a lot of government corruption to help his friends get rich, and he's pushing the invasion of ... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Wahhabism",
"http://en.wikipedia.org/wiki/Alexander_Litvinenko"
]
] | ||
tn2ns | the speed of pulling on one end of a string | So, if I have a string that is tight and I pull on one end, will the other end shift position at the same time? Could I use that to send messages quickly interplanetary? (Question comes from the pholites/ansibles in the Ender's Game series, if you haven't read them READ THEM NOW!) | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/tn2ns/eli5_the_speed_of_pulling_on_one_end_of_a_string/ | {
"a_id": [
"c4o0smt",
"c4o0sni"
],
"score": [
8,
3
],
"text": [
"No, it won't shift position at the same time. The position change will travel at the speed of sound in the string.",
"[A very similar question has been asked on the front page.](_URL_0_)\n\nIts essentially the same princ... | [] | [] | [
[],
[
"www.reddit.com/r/explainlikeimfive/comments/tlhgt/eli5_if_a_tube_of_marbles_stretched_to_mars_and_a/"
]
] | |
24n3s4 | If gorilla's have been shown to be able to learn and comprehend sign and spoken language, why have they not developed their own crude language? | askscience | http://www.reddit.com/r/askscience/comments/24n3s4/if_gorillas_have_been_shown_to_be_able_to_learn/ | {
"a_id": [
"ch8qn4w"
],
"score": [
31
],
"text": [
"They do not understand sign/spoken language to the level you believe. Much of the Koko-The-Gorilla studies you are probably thinking of are vastly over hyped by both the project leads and the media. While gorillas are very intelligent creatures,... | [] | [] | [
[]
] | ||
bhcjfc | Was the battleship Bismarck really the best of its time? | Often times, I hear people (Probably fans of the ship) praise it so much for its reputation of sinking the Hood and taking a lot of punishment during its final battle.
Some people even go as far as to say it was \*the\* best battleship of its time. But is the Bismarck really that good? Was it deserving of its reputati... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/bhcjfc/was_the_battleship_bismarck_really_the_best_of/ | {
"a_id": [
"elrqsvf"
],
"score": [
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],
"text": [
"No, the Bismarck was a fairly poor design. [Adapted from an earlier answer](_URL_1_): \n\n## Part 1 \n\n > I mean yes, those 3 things are exactly the reason the Bismarck sunk. but I think that can be more attributed to luck (or rather the lack ... | [] | [] | [
[
"https://en.wikipedia.org/wiki/For_Want_of_a_Nail",
"https://www.reddit.com/r/AskHistorians/comments/6pgrdi/were_german_battleships_in_ww2_really_as_resilent/dkqx946/",
"https://upload.wikimedia.org/wikipedia/commons/c/cf/US_Navy_080219-N-9520G-001_Sailors_assigned_to_the_Arleigh_Burke-class_guided-mi... | |
56u47v | why did we create words for words that already existed, but then still use that word? | I was getting ready this morning and while reaching for my hair paste I saw that the word "flexible" was also a french word "malleable." I don't know enough history about the English language but am confused as to why we would create a word, flex, to replace malleable, and then still use the word maliable. I know there... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/56u47v/eli5why_did_we_create_words_for_words_that/ | {
"a_id": [
"d8mctnc",
"d8mcyzx",
"d8mdani"
],
"score": [
2,
3,
3
],
"text": [
"I don't think that flexible and malleable are exactly interchangeable like you think. There is some cross-over with their meanings, as you noted, but there are plenty of situations in which you would u... | [] | [] | [
[],
[],
[]
] | |
5uvkud | when you get pulled over by a cop and they "run" your license, what are they actually doing? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5uvkud/eli5_when_you_get_pulled_over_by_a_cop_and_they/ | {
"a_id": [
"ddx63n1",
"ddx7369"
],
"score": [
12,
8
],
"text": [
"They are checking your id against numerous databases to see if you have outstanding warrants for your arrest, if this is a repeat offense, if your license is up to date, if your license has been revoked, etc. ",
"I woul... | [] | [] | [
[],
[]
] | ||
236rai | why do you sometimes start seeing in a "zoomed out" sort of fashion, and what triggers it | First time i noticed it, was when looking at my brother, his head started shrinking from my point of view, seeing him from far ahead. Another time I was programming at work , looking at my monitor, and all of a sudden, while looking at it, I was very aware about my surroundings as well, and the monitor didn't take tha... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/236rai/eli5_why_do_you_sometimes_start_seeing_in_a/ | {
"a_id": [
"cgu4lwj",
"cgu57vq"
],
"score": [
2,
2
],
"text": [
"Sounds like you experienced [depersonalization.]( _URL_0_) ",
"Yes i know what you talking about, I use to get them alot when i was like 6 - 10 yrs old. \nI would be watching TV on those old 27inch bulky screens and out... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Depersonalization"
],
[]
] | |
aibwkq | how does smoking narrow upper airways? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/aibwkq/eli5_how_does_smoking_narrow_upper_airways/ | {
"a_id": [
"eemks9j"
],
"score": [
8
],
"text": [
"Irritation, which leads to inflammation, which leads to swelling as fluids like blood try to heal the irritated area. "
]
} | [] | [] | [
[]
] | |
l7jsu | Hey /r/askscience, how feasible would it be to build a Molten Salt Reactor today? | _URL_0_
Could we build one with current materials, knowledge, and methods? | askscience | http://www.reddit.com/r/askscience/comments/l7jsu/hey_raskscience_how_feasible_would_it_be_to_build/ | {
"a_id": [
"c2qi16l",
"c2qi16l"
],
"score": [
2,
2
],
"text": [
"The answer is a bit multifaceted. As the article you linked mentioned, research msr's have been successfully built and operated. The main obstacle to msr's for commercial power is regulatory, not technological. No doubt ther... | [] | [
"http://en.wikipedia.org/wiki/Molten_salt_reactor"
] | [
[],
[]
] | |
3hvu0y | (WWI) Were there any attempts at tunneling under the opposing trenches? | One tactics I've seen for sieging castles and fortresses was sapping- tunneling under the walls, either to collapse them or to allow a small force to get within the walls and open the gates from within.
Did any of the major powers in WWI try something similar (tunneling under the enemy trenches to strike at the guns) ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3hvu0y/wwi_were_there_any_attempts_at_tunneling_under/ | {
"a_id": [
"cub8a42"
],
"score": [
2
],
"text": [
"Yes! Check out this post I wrote before for some more info! :)\n\n_URL_0_"
]
} | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/2ghywg/read_once_about_a_single_bomb_buried_by_the/"
]
] | |
195qj3 | Why did the Soviet Union hate America so much? | I'm watching the show The Americans about Soviet spies in America during the Cold War, and it struck me that I don't really know why they disliked us so much. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/195qj3/why_did_the_soviet_union_hate_america_so_much/ | {
"a_id": [
"c8l202j",
"c8lf05x"
],
"score": [
7,
3
],
"text": [
"You might be interested in [this answer](_URL_0_) in a thread from two weeks ago, which explains that America was, in fact, not at all seen as 'the enemy' in the Soviet Union.",
"Other posters have already commented on t... | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/188xka/during_the_cold_war_did_the_soviets_have_their/c8cz0xk"
],
[]
] | |
434vxd | In World War II, it was possible for world powers to enter into total war while mutually agreeing not to use chemical weapons due to the mutual destruction they would create. They were never used even in desperation. Why do nuclear weapons prevent conventional war if chemical weapons do not? | To rephrase, what I mean is if it was possible for world powers to go to war while agreeing not to use a mutually destructive weapon, why isn't the same situation possible with nuclear weapons? Why didn't MAD work in WWII with chemical weapons, and why did it work after with nuclear weapons? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/434vxd/in_world_war_ii_it_was_possible_for_world_powers/ | {
"a_id": [
"czfky1r",
"czflvhd",
"czfsb2h",
"czgn5y6"
],
"score": [
14,
22,
6,
2
],
"text": [
"I think you have to consider that the delivery mechanisms for chemical weapons weren't as sophisticated during WW2 as they became later for nuclear weapons during the cold war. ... | [] | [] | [
[],
[],
[
"http://bos.sagepub.com/content/66/4/77.full.pdf+html"
],
[]
] | |
3oiblf | why is it that our bodies feel heavy after swimming? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3oiblf/eli5why_is_it_that_our_bodies_feel_heavy_after/ | {
"a_id": [
"cvxg4cp",
"cvxg6u5"
],
"score": [
3,
2
],
"text": [
"Water pushes up on our bodies with what's called buoyant force. This makes us feel like we're lighter, because there's a force pushing up on us that's partially counteracting the downward force of gravity. When we leave the ... | [] | [] | [
[],
[]
] |
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