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 |
|---|---|---|---|---|---|---|---|---|---|
4ynmpf | why are energy and mass similar? | I have heard this fact before, but I do not understand what it means and how it can be applied. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4ynmpf/eli5_why_are_energy_and_mass_similar/ | {
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"text": [
"All mass is energy, but not all energy is mass. This is a result of Einstein's special theory of relativity."
]
} | [] | [] | [
[]
] | |
30m413 | Why do medicine and other fields use mmHg (millimeters of mercury) as opposed to the more standard SI unit Pascals? | I work as an assistant/technician to an Optometrist, and I noticed that the tonometer (a device used to measure the interior pressure of the eye) measures said pressure in mmHg, as opposed to the standard imperial or SI units (PSI and Pascals/Kilopascals, respectively). Why is this? I know various other medical measure... | askscience | http://www.reddit.com/r/askscience/comments/30m413/why_do_medicine_and_other_fields_use_mmhg/ | {
"a_id": [
"cptq6hy"
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"score": [
5
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"text": [
"It's probably because of the mercury sphygmomanometer, the device that's been used for over a century to measure blood pressure. Since it actually measures pressure in terms of a column of mercury, that's how pressures are described. People still... | [] | [] | [
[
"http://ajh.oxfordjournals.org/content/13/3/276.full.pdf",
"http://circ.ahajournals.org/content/88/5/2460.full.pdf",
"http://hyper.ahajournals.org/content/37/2/185.full"
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] | |
326t8o | where did blacksmiths go after industrialization? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/326t8o/eli5where_did_blacksmiths_go_after/ | {
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"Someone has to tell people how to run those machines that took their jobs...",
"Other jobs. A skilled blacksmith is probably a very valuable worker in many other professions. Since blacksmiths would... | [] | [] | [
[],
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] | ||
1qrist | what causes that feeling in your chest when you're really horny? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1qrist/eli5what_causes_that_feeling_in_your_chest_when/ | {
"a_id": [
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"score": [
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"text": [
"I'm going to take a stab at this one, someone will correct me if I'm wrong.\n\nAs far as I have always known, when we become aroused we go through a stage of vasocongestion which is in layman's terms, a sex flush, or rather an increased blood flo... | [] | [] | [
[]
] | ||
1w6h2m | server wages in the u.s. are they actually making minimum wage? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1w6h2m/server_wages_in_the_us_are_they_actually_making/ | {
"a_id": [
"cez4mjr",
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"score": [
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"text": [
"Depends on the state. In some states they are allowed to make less than minimum, in other states they must make minimum or more. Depends on the restaurant as well. Some restaurants (such as fine dini... | [] | [] | [
[],
[],
[]
] | ||
5g02e6 | why can my phone accurately recognize spoken language in a crowded hallway but captchas are still used to prove you're human? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5g02e6/eli5why_can_my_phone_accurately_recognize_spoken/ | {
"a_id": [
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"daodil5"
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"text": [
"It reminds me of this _URL_1_ comic where what you think may be simple is much more complicated to a computer. \n\nCaptchas are surprisingly difficult for computers because their recognition for shapes is not amazing especia... | [] | [] | [
[
"https://www.youtube.com/watch?v=SGxKhUuZ0Rc",
"http://xkcd.com/1425/"
],
[]
] | ||
agk02r | According to some /badhistory posts, the treaty of Versailles wasn't that harsh at all in comparison to other treaties. The general idea is that Germany's "crisis" was not a factor for WWII, and in fact this crisis was sort of a lie by Hitler and nazis to go to war. How right is this angle? | _URL_0_
the post in question | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/agk02r/according_to_some_badhistory_posts_the_treaty_of/ | {
"a_id": [
"ee70tri",
"ee7892u"
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"score": [
333,
299
],
"text": [
"Not to discourage anybody from writing a response but a similar question was answered quite well here: _URL_0_",
"(1/2)\n\nThe answer linked below does a great job of explaining the economic consequences (or lack the... | [] | [
"https://old.reddit.com/r/badhistory/comments/aa7gag/is_it_true_that_the_treaty_of_versailles_was_not/"
] | [
[
"https://www.reddit.com/r/AskHistorians/comments/8otw7p/was_the_treaty_of_versailles_too_harsh/"
],
[]
] | |
c8d6oe | why do wine bottles usually use corks instead of lids or caps? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/c8d6oe/eli5_why_do_wine_bottles_usually_use_corks/ | {
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"score": [
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2,
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"text": [
"Yes, it is to do with the fermentation process and allowing oxygen to enter the bottle as it ages. \n\n\nFermentation is what we call it when the yeast (living organisms) change ... | [] | [] | [
[
"https://winefolly.com/tutorial/33-bizarre-wine-flavors/",
"https://winefolly.com/tutorial/the-truth-about-oxygen-and-wine-aging/",
"https://winefolly.com/review/where-wine-flavors-come-from/",
"https://winefolly.com/update/young-wines-better-than-old-wines/",
"https://winefolly.com/review/che... | ||
2nm057 | Why do medieval depictions of classical or biblical events show them with contemporary clothing etc? | An example of what I'm referring to is [this](_URL_0_) image of Mithradates VI and Hypsicratea. He's a lot less "Greco-Persian Monarch" and a lot more "Henry Tudor" than I would have expected. Was this because of a lack of reference for what those people and locations would have looked like? Or was this a more explicit... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2nm057/why_do_medieval_depictions_of_classical_or/ | {
"a_id": [
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13,
3
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"text": [
"Take a look at this section from the popular questions section of the wiki talking about [how people in the past viewed the future](_URL_0_). The broad answer to that particular question is that, before the Industrial Revol... | [] | [
"http://www.bl.uk/catalogues/illuminatedmanuscripts/ILLUMIN.ASP?Size=mid&IllID=47942"
] | [
[
"http://www.reddit.com/r/AskHistorians/wiki/dailylife#wiki_what_was_science_fiction_like_in_the_past.3F_how_did_ancient_people_imagine_the_future.3F"
],
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"http://www.reddit.com/r/AskHistorians/comments/1hvjr7/many_works_of_art_depicting_ancient_or_biblical/",
"http://www.reddit.com/r/AskHistorian... | |
83ylgy | what factors influence breast size? | Obviously genetics has a big part in it, but what else can influence breast size? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/83ylgy/eli5_what_factors_influence_breast_size/ | {
"a_id": [
"dvljpbx"
],
"score": [
9
],
"text": [
"The biggest determinant is genetics. Aside from that, the person's weight and fat deposits (more fat in the breast area means bigger breasts), and hormones. Hormones would be the 2nd biggest, as estrogen makes breasts enlarge or shrink (many wome... | [] | [] | [
[]
] | |
490ddq | In the 1980s why was the public and government so accepting of ozone layer science, when today many are unconvinced by climate science? Were there efforts by industrialists to spread misinformation about the hole in the ozone layer, and prevent regulation? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/490ddq/in_the_1980s_why_was_the_public_and_government_so/ | {
"a_id": [
"d0oa9ai"
],
"score": [
3
],
"text": [
"Hi, check out this recent response by /u/Holokyn-kolokyn\n\n* [In the late 80's and 90's the depleting ozone layer was a huge environmental issue. Was there a lot of lobbying against repairing it or deniers of sorts such as we see in the climate ... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/43y1e6/in_the_late_80s_and_90s_the_depleting_ozone_layer/"
]
] | ||
1l5i4r | What caused Venus' runaway greenhouse effect? | All I could find elsewhere was that the boiling of the oceans made the effect go haywire and the cause of that was CO2 released into the atmosphere but what released the gas in the first place? | askscience | http://www.reddit.com/r/askscience/comments/1l5i4r/what_caused_venus_runaway_greenhouse_effect/ | {
"a_id": [
"cbw787k"
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"score": [
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"text": [
"Since early Venus would have been slightly warmer than the Earth (due simply to being closer to the Sun), the balance of the [carbonate-silicate cycle](_URL_0_) on the planet would have been shifted slightly in favour of carbon dioxide production... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Carbonate%E2%80%93silicate_cycle"
]
] | |
g13hb7 | AskScience AMA Series: I am paleontologist Hans Sues, I study late Paleozoic and Mesozoic vertebrates. Ask Me Anything! | Hi Reddit, I'm Dr. Hans Sues. I am a vertebrate paleontologist who is particularly interested in late Paleozoic and Mesozoic vertebrates. I first became interested in fossils when I was four years old and, as a high-school student, started collecting animal and plant fossils with a group of amateur collectors. Later I ... | askscience | https://www.reddit.com/r/askscience/comments/g13hb7/askscience_ama_series_i_am_paleontologist_hans/ | {
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"fne5k2b",
"f... | [] | [
"https://www.smithsonianmag.com/author/hans-dieter-sues/",
"https://www.youtube.com/channel/UCEoXRsqyFvc4Cuq8exbVLaw"
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16eb15 | Does freezing vegetables "destroy" nutrients? | For simplicity's sake i generally buy bags of frozen mixed vegies which i microwave in a steamer. Looking through previous askscience posts i've found steaming is one of the better way to preserve nutrients in the cooking process, but i have been told that a lot of nutritional content is destroyed by the freezing proce... | askscience | http://www.reddit.com/r/askscience/comments/16eb15/does_freezing_vegetables_destroy_nutrients/ | {
"a_id": [
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"score": [
12,
3
],
"text": [
"Quite the opposite, the 'institute of food reasearch' _URL_0_ studies have found that frozen vegetables usually have superior nutritional quality to their 'fresh' counterparts. This is because frozen vegetables are frozen a... | [] | [] | [
[
"http://www.ifr.ac.uk/"
],
[]
] | |
6auxfp | does our vision have a limit? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6auxfp/eli5_does_our_vision_have_a_limit/ | {
"a_id": [
"dhhmntl"
],
"score": [
2
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"text": [
"Can you see galaxies however many light years away? Sure. \n\nYou don't really see distance. You see the light particles contacting the back of your retina. So if there's light bouncing off of the wall on the opposite side of the hallway and it... | [] | [] | [
[]
] | ||
22qz3y | what is a zero-day attack? | Can somebody explain this concept to me? I do not understand it... I read the Wikipedia page and still don't get it. Explain like I'm five | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/22qz3y/eli5_what_is_a_zeroday_attack/ | {
"a_id": [
"cgpismt",
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"score": [
3,
4
],
"text": [
"the attack is seen in the wild zero days after it is discovered by security researchers. In computer science terminology, this usually means the person who wrote the exploit is also the person who discovered it, and rather ... | [] | [] | [
[],
[]
] | |
14wvsj | Because we know approximately when the Big Bang happened, doesn't that mean the universe can't be infinite? [Sorry if remedial] | I've been told to imagine the history of the universe (matter) as an expanding bubble commenced by the big bang. It seems to me that logic requires infinity to have no beginning, right? Sorry if this is remedial physics, but I was just reading that the universe is considered to be infinite. | askscience | http://www.reddit.com/r/askscience/comments/14wvsj/because_we_know_approximately_when_the_big_bang/ | {
"a_id": [
"c7h636k"
],
"score": [
80
],
"text": [
" > I've been told to imagine the history of the universe (matter) as an expanding bubble commenced by the big bang.\n\nWhoever told you that was mistaken; the big bang did not launch a bunch of matter out into some nether void. Rather, it was th... | [] | [] | [
[]
] | |
4hhl99 | why do bacteria make us sick? why do some bacteria help us? why can't they just chill out in a hosts body and not do anything? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4hhl99/eli5_why_do_bacteria_make_us_sick_why_do_some/ | {
"a_id": [
"d2pnmdx",
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],
"score": [
3,
6
],
"text": [
"Put very simply, all a bacteria's actions are necessary for its survival. If you get sick, that means there's some micro-level crap going on inside your body. Most probably bacteria or a virus. And likely, they do that to ga... | [] | [] | [
[],
[]
] | |
t1pzb | If an asteroid that were bigger than earth pass by close enough so that we are dragged into its gravitational pull? | My question is, if earth were to have an asteroid bigger than itself pass by close enough could we potentially be dragged into its gravitational field, or inversely could it drag us off of our gravitational alignment? Do asteroids bigger than the earth even exist? | askscience | http://www.reddit.com/r/askscience/comments/t1pzb/if_an_asteroid_that_were_bigger_than_earth_pass/ | {
"a_id": [
"c4isi31",
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3,
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],
"text": [
"Asteroids are smaller than the earth...\n\n > Asteroids vary greatly in size, from almost 1000 kilometres for the largest down to rocks just tens of metres across. The three largest are very much like ... | [] | [] | [
[],
[],
[]
] | |
3wiifm | why does it matter if barak obama is a muslim? | I hear this argument as a criticism of the US president every now and then, but I don't see how its relevance. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3wiifm/eli5_why_does_it_matter_if_barak_obama_is_a_muslim/ | {
"a_id": [
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"score": [
5,
18,
7,
3,
2
],
"text": [
"It's new and untested. All presidents until this point were of Christian denominations and white...Barack Obama changed the game by being black. Having a Mus... | [] | [] | [
[],
[],
[],
[],
[]
] | |
24io7e | why do some people not experience addiction withdrawal symptoms? | For example, I have smoked for years. I can quit cold turkey and have several times just to prove a point to people. In college, I partied a lot (7 days a week) and also quit all of that cold turkey because I felt like it. I've never met anyone else like this. And oddly enough, addiction problems run in my family. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/24io7e/eli5_why_do_some_people_not_experience_addiction/ | {
"a_id": [
"ch7iqqi"
],
"score": [
3
],
"text": [
"I'd like for you to consider the possibility you are in denial."
]
} | [] | [] | [
[]
] | |
1b5fet | What made steppe invaders so effective and consistently dangerous throughout history? | It just seems odd that a lightly populated, mostly nomadic area of land produced multiple civilizations that posed threats to the most established, complex societies. Is it as simple as the land's penchant for horse riding proficiency? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1b5fet/what_made_steppe_invaders_so_effective_and/ | {
"a_id": [
"c93zc84"
],
"score": [
9
],
"text": [
"Horses are the key. \nThe steppe peoples could muster horses in numbers undreamt of by their more sedentary neighbors. Until the 19th century, horses were the most powerful elements of warfare. \nThe people you are referring to, inner asian ste... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Sengge_Rinchen"
]
] | |
btfohc | when a human is buried in a coffin, what actually happens with the dead organic matter? | I mean, if one just dies on the ground, the bugs and animals and smaller organisms will consume it. But if it's isolated in a coffin, does it just, mummify? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/btfohc/eli5_when_a_human_is_buried_in_a_coffin_what/ | {
"a_id": [
"eox6sd4"
],
"score": [
27
],
"text": [
"depends how much embalming fluid there is in their veins. generally, after 10 years there's a lot of liquid in there, recognizable skin and bones lots of hair and a dank smell. if the coffin leaks and doesn't flood they get leathery but if it ... | [] | [] | [
[]
] | |
2vfa72 | why is 50 shades of grey rated r and not x? | sorry for the misunderstanding. I understand that they made it R to make more money etc. But I thought the story was mostly about BDSM. So wouldn't this just be a high quality porn movie with a decent plot line? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2vfa72/eli5why_is_50_shades_of_grey_rated_r_and_not_x/ | {
"a_id": [
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],
"text": [
"They most likely toned down the sex in order to get an R rating. An X rating is pretty much a death sentence for a film trying to be successful mainstream ",
"Minor note: there's no such thing as X ... | [] | [] | [
[],
[],
[]
] | |
820wem | ; if marijuana “stays in the system” for a week or two, why are humans sober after an hour or two? if it’s in the system, is it technically intoxication for all those days | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/820wem/eli5_if_marijuana_stays_in_the_system_for_a_week/ | {
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26,
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6
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"text": [
"It's not complex. The amount that stays is a very small percentage -- most of it is gone after about 24 hours. The remaining amount is too small to make you ... | [] | [] | [
[],
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1r5zyt | how do historians or linguists decode and translate an ancient language that hasn't been spoken in a long time? | I just don't even know where one would start. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1r5zyt/eli5how_do_historians_or_linguists_decode_and/ | {
"a_id": [
"cdjxhjo",
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"score": [
2,
38
],
"text": [
"This is a really interesting question.\n\nI mean, I know some languages were decoded with Rosetta Stone equivalents. But what about extremely ancient languages like those spoken in Uruk? And, do we know how do they could be... | [] | [] | [
[],
[]
] | |
1g16wa | nuclear anti-aircraft weapons | Did they have any (theoretical) practical use or were they just to show off? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1g16wa/eli5_nuclear_antiaircraft_weapons/ | {
"a_id": [
"caftsjx",
"cafv0ol",
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"score": [
2,
2,
2
],
"text": [
"In a time when guidance systems weren't terribly advanced, being able to aim in the general vicinity of a swarm of aircraft was a great advantage. And having a nuke go off over your country was prefera... | [] | [] | [
[],
[],
[]
] | |
2109w4 | why are the russians troops that invaded crimea wearing masks and in unmarked uniforms | Isn't it a law of war that they have to wear marked uniforms? And why the masks? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2109w4/eli5_why_are_the_russians_troops_that_invaded/ | {
"a_id": [
"cg8dby1"
],
"score": [
4
],
"text": [
"Plausible deniability--Russia can say they are \"thugs\", or \"gangs\" without taking direct responsibility."
]
} | [] | [] | [
[]
] | |
2gk7hd | 3d printing over void space | I understand the basics of 3D printing involves depositing successive layers of material. In this process, the lower layers support the upper layers. However, I've seen a lot of 3D printed objects that include portions that enclose, cover, or extend over empty or void spaces/volumes. It doesn't seem like one could p... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2gk7hd/eli5_3d_printing_over_void_space/ | {
"a_id": [
"ckjv9j7",
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"score": [
2,
3,
3
],
"text": [
"The stuff I've seen includes some disposable support 'scaffolding' that needs to be cut out after printing is finished. Basically, they'll just print a lightweight lattice inside the void.",
"It de... | [] | [] | [
[],
[],
[
"http://www.thingiverse.com/thing:9804"
]
] | |
1pbgi3 | why is it illegal to download music without paying for it when i have access to the same music for free on multimedia websites, like youtube? | Basically, it doesn't make sense to me because if the music on YouTube is free to listen to (besides your internet bill), why does it matter if I have the same music on my iPod, for example, if I have free easy access to the music anyway? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1pbgi3/eli5_why_is_it_illegal_to_download_music_without/ | {
"a_id": [
"cd0ng4p",
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"score": [
3,
15,
5,
2
],
"text": [
"Because the record companies have those videos monetized, so they still get their cut. Videos that aren't owned by the record company that have those songs just haven't been taken... | [] | [] | [
[],
[],
[],
[]
] | |
72n2y6 | if i die and i am eligible to donate organs, who would pay for the procedure? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/72n2y6/eli5_if_i_die_and_i_am_eligible_to_donate_organs/ | {
"a_id": [
"dnjqmbj"
],
"score": [
2
],
"text": [
"Insurance pays for it through the intended recipient generally "
]
} | [] | [] | [
[]
] | ||
7p3qhf | what causes the inside of toilet tanks to appear all poopy? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7p3qhf/eli5_what_causes_the_inside_of_toilet_tanks_to/ | {
"a_id": [
"dse9cn6",
"dse9ssq"
],
"score": [
3,
6
],
"text": [
"Minerals in your water. Iron in the water sticks to the porous inside of the porcelain tank and stains it brown.",
"You sure you didn't get an upper decker? "
]
} | [] | [] | [
[],
[]
] | ||
b3ta6l | How extreme was the threat of the cold war going "hot" in 1983? | I recently read a claim that 1983 was the most dangerous year of the cold war in terms of escalating to actual conflict. If this is true what factors made cold war escalation in 1983 seem more likely than something like the Cuban missile crisis in 1962? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/b3ta6l/how_extreme_was_the_threat_of_the_cold_war_going/ | {
"a_id": [
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"text": [
"I did some digging and found out that it was actually because of the Chinese and Russian conflict along their borders. Those dude hated eachother, but here's why/how. \n\nMao is the one who started it all. You see, the thing is, Mao fucking loved... | [] | [] | [
[]
] | |
13ugj6 | Is there a single pre-Early Modern Period weapon of war that can be considered to dwarf all others of its time in terms of its effectiveness? | I hope I phrased the question in an intelligible manner. Essentially, I was wondering if there was any offensive military equipment developed before the widespread use of gunpowder that provided an almost tank-versus-horseman-like advantage in war in the era it was introduced. Thanks!
P.S. I only recently discovered t... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/13ugj6/is_there_a_single_preearly_modern_period_weapon/ | {
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"text": [
"The mongols were able to use their skill as horsemen to run over most armies in their path with little 2nd guessing. The powerful, compact bows were able to... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Genghis_Khan"
],
[],
[],
[],
[
"http://www.ancientkeris.com/images/IndonesianSwordsIndonesiAntiques1.jpg",
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"https://upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Two_hoplites.jpg/312px-Tw... | |
1r2ssm | Why didn't the Inca use their metallurgy capabilities to mass produce weapons instead of decorations, figurines and symbolic ornaments? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1r2ssm/why_didnt_the_inca_use_their_metallurgy/ | {
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"text": [
"Andean people saw metal in a fundamentally different way from Europeans. Metal was a material of symbolic, religious importance. Using it for utilitarian purposes was wasteful. ... | [] | [] | [
[],
[
"http://www.jstor.org/discover/10.2307/3104667?uid=3739448&uid=2&uid=3737720&uid=4&sid=21102962274437"
],
[],
[]
] | ||
62lmfy | How significant was the UK's contribution to the allied victory in WWII compared to that of the USA and USSR? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/62lmfy/how_significant_was_the_uks_contribution_to_the/ | {
"a_id": [
"dfns90p",
"dfnwsxd"
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"score": [
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],
"text": [
"A corollary question would be \"how important was the Western Front/Strategic Air Command/Northern Lend-Lease routes to Germany's defeat?\"\n\nThe primary contribution of the UK, in my opinion, was their actual landmass on t... | [] | [] | [
[],
[]
] | ||
6dpki6 | Historically, how unusual is it to have a 60+ year period in which no major world powers are at war with each other? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6dpki6/historically_how_unusual_is_it_to_have_a_60_year/ | {
"a_id": [
"di4nfy1",
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"score": [
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3
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"text": [
"Peace in human history is relatively fleeting. \n\nBefore we can discuss periods of peace, we need to discuss what, exactly, a world power is. Because the ability to project force around the entire globe is relatively recen... | [] | [] | [
[],
[]
] | ||
3mu8e4 | if we know that leptin suppresses hunger and triggers fat-burning, why hasn't a leptin pill/injection been developed to treat obesity? | Just a chunky looking for some answers | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3mu8e4/eli5_if_we_know_that_leptin_suppresses_hunger_and/ | {
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"score": [
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"text": [
"Experiments were tried and none of them produced significant weight loss results. There is a subset of people who are leptin deficient that become very obese who benefit from leptin supplementation and ... | [] | [] | [
[],
[],
[
"http://www.nature.com/ijo/journal/v33/n2s/full/ijo200965a.html"
]
] | |
3hnrz7 | how do networks calculate accurate ratings if so few people have a neilson box? | it seems like nobody has one and i've never heard of anyone - even myself being offered one. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3hnrz7/eli5_how_do_networks_calculate_accurate_ratings/ | {
"a_id": [
"cu90aog"
],
"score": [
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],
"text": [
"Neilsen ratings are getting increasingly inaccurate. They're years behind the technology people are using now. They and others like them are slowly getting better at tracking ratings across media, like streaming, VOD, Cable, etc, but I'm surprise... | [] | [] | [
[]
] | |
562x8q | why and how is the brain able to "forget" tragic events and pain? | A few years ago I rolled my truck in a field about 5 times: up a small bank, through barbed wire. Since the second it happened, I wasn't able to remember what caused the accident, or the accident at all, until I got out of the truck and walked away.
Women also say that you forget the pain of child birth.
How is the b... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/562x8q/eli5_why_and_how_is_the_brain_able_to_forget/ | {
"a_id": [
"d8fwwvf"
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"score": [
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],
"text": [
"I'm not sure I'd call this an \"ability\". This is something that is usually *caused* rather than the brain, well, deciding to do it. \n\nThat said, there are quite a few different things that might be happening here. Your personal experience if ... | [] | [] | [
[]
] | |
6t996o | how come different parts of our body have a different tolerance to heat? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6t996o/eli5_how_come_different_parts_of_our_body_have_a/ | {
"a_id": [
"dliv63k"
],
"score": [
5
],
"text": [
"Difference in the amount of sensing nerves. Fingers are the most sensitive (if earth is a perfectly round marble, our finger can feel the cars moving just by touching it)"
]
} | [] | [] | [
[]
] | ||
3x2r4n | Meet your new moderators! | Hello there! As our sub grows in size (we’re inching steadily towards half a million subscribers! gulp), we sometimes take the opportunity to add new moderators. It’s now been five months since the last time we added new mods, and we’re proud to announce that as of today we have a new class of ~~literal Hitlers~~ subre... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3x2r4n/meet_your_new_moderators/ | {
"a_id": [
"cy0yiku",
"cy0yu8u",
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"cy137dq",
"cy149er",
"cy14bxz",
"cy15siw",
"cy164ns",
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"cy1bc8k",
"c... | [] | [] | [
[],
[],
[],
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"https://en.wikipedia.org/wiki/Phocas"
],
[],
[],
[],
[],
[],
[],
[],
[],
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[],
[],
[],
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... | |
4bux6g | Can rainfall amplify sky noise? (Jet noise more specifically) | Raining in Ohio now. Hearing jets noticeably louder than on clear nights. Not near low or varied flight paths. Wondering if pressure or downward movement of rain is somehow at play. | askscience | https://www.reddit.com/r/askscience/comments/4bux6g/can_rainfall_amplify_sky_noise_jet_noise_more/ | {
"a_id": [
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"score": [
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4
],
"text": [
"It's mainly acoustic reflections off the clouds (which is mainly due to particles and temperature gradients within the cloud). You should hear the same on a cloudy (but dry) day as on a rainy day with comparable cloud cover... | [] | [] | [
[],
[]
] | |
352u2b | Why did Moctezuma allow Tlaxcallan warriors into Tenochtitlan alongside Cortes? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/352u2b/why_did_moctezuma_allow_tlaxcallan_warriors_into/ | {
"a_id": [
"cr0mdwv",
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"score": [
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"text": [
"Could you clarify your question a little further? I'm assuming you are referring to the initial arrival of cortez and his allies and not to conquest of the city (since refusal of entry wouldn't matter too much during a seige... | [] | [] | [
[],
[]
] | ||
137lem | Where did our solar system's cosmic dust come from? | Planets are made from asteroids smashing together. Asteroids are made from dust smashing together. Where did the dust come from? | askscience | http://www.reddit.com/r/askscience/comments/137lem/where_did_our_solar_systems_cosmic_dust_come_from/ | {
"a_id": [
"c71iilz"
],
"score": [
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"text": [
" > Planets are made from asteroids smashing together. Asteroids are made from dust smashing together.\n\nA little simplistic, since the planets formed at about the same time as the asteroids, and the gas giants are mostly made of gas and not the ... | [] | [] | [
[]
] | |
4trkii | why have recent us presidential elections typically come down to swing states of ohio, pennsylvania, florida? | I'm curious as to why recent elections have come down to several swing states to decide the US presidency of late. I know that there are more states than just those, but it seems since the year 2000 those states have been heavily involved.
I understand how the electoral college functions, but what makes these states s... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4trkii/eli5why_have_recent_us_presidential_elections/ | {
"a_id": [
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"score": [
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12,
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"text": [
"One framework which is useful when thinking about the electoral college is thinking about how the popular vote in each state tends to differ from the national popular vote.\n\nIf the national race is t... | [] | [] | [
[],
[],
[]
] | |
2anzef | tipping out ( delivery driver ) | So I have been working as a delivery driver for the past year. I just applied to this job and online, it says that the position is split between being a delivery driver and doing other duties, such as dishwashing, which is fine is me. On there it says that while dishwashing, the driver will be tipped out. Does anyone k... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2anzef/eli5tipping_out_delivery_driver/ | {
"a_id": [
"cix0zsz",
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3,
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"text": [
"An amount or percentage of a server's tips that the server shares, either voluntarily or as mandated in a tip sharing or tip pooling agreement, with other employees such as bus boys, bartenders, back wa... | [] | [] | [
[],
[
"http://en.wiktionary.org/wiki/tip_out"
],
[]
] | |
7okmm0 | How did european explorers in the age of discovery handle new languages? | European explorers visited tons of new places with different languages very isolated (linguistically) from European languages. How did they setup communications with new peoples? How long would it take to effectively communicate? Did they bring expert language learners or try to pick up translators as they went? Was th... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7okmm0/how_did_european_explorers_in_the_age_of/ | {
"a_id": [
"dsa8hn5"
],
"score": [
6
],
"text": [
"There's always room for discussion, but perhaps the section [Cross-cultural communication and lingua francas](_URL_0_) from our FAQ will answer your inquiry."
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/wiki/language#wiki_cross-cultural_communication_and_lingua_francas"
]
] | |
5ac4ll | when you deposit to a bank, does the bank just store the money | So let me explain in more detail here. When it comes to a bank accepting a cash deposit to your account and you get said amount accredited to your account what does the bank do with said money. It's not like they would want to keep billions and billions of dollars of cash stored somewhere because it was deposited. How ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5ac4ll/eli5_when_you_deposit_to_a_bank_does_the_bank/ | {
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"text": [
"The way modern banking works is heavily reliant on what we call 'fractional reserve banking'. When you deposit money in the bank, a portion of that money (say, 10%) is set aside a... | [] | [] | [
[],
[],
[],
[
"https://youtu.be/-nZkP2b-4vo"
]
] | |
5w5brs | why does chipotle cause diarrhea? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5w5brs/eli5_why_does_chipotle_cause_diarrhea/ | {
"a_id": [
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"text": [
"It's not anything specific to Chipotle. I think you'll find that most fast food chains have this reputation to at least some degree.\n\nIt's because the food is made cheaply with a lot of fat, starch, sugar, and salt, and not a whole lot else. ... | [] | [] | [
[]
] | ||
3rrenr | What is the difference between quantum uncertainty and ordinary uncertainty? | In an electron diffraction experiment, we can shoot electrons one at a time through a grating, and they will make a diffraction pattern, showing that the electrons are really waves. This diffraction pattern is a statistical distribution of the electron wavefront at the detector, and the grating helps to illustrate the ... | askscience | https://www.reddit.com/r/askscience/comments/3rrenr/what_is_the_difference_between_quantum/ | {
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"text": [
"The short answer is that the difference is one between true, intrinsic uncertainty in the quantum case, and a simple lack of informatio... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Quantum_decoherence",
"http://imgur.com/wM0LC2x",
"http://image.slidesharecdn.com/whaleyfeb2015-150216103812-conversion-gate01/95/birgitta-whaley-berkeley-quantum-computation-at-a-laser-httpwwwscarufficomleonardofeb2015bhtml-12-638.jpg?cb=1424083140",
"https://en.wik... | |
5a5mg0 | Why is English spoken in the United States instead of German? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5a5mg0/why_is_english_spoken_in_the_united_states/ | {
"a_id": [
"d9e6mua"
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"score": [
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"text": [
"While German ancestry is still the largest single ethnic heritage group it isnt necessarily the most cohesive one. Much of it is either centuries old pre unification or heavily scrubbed in no small part thanks to the World Wars.\n\nWhile despite ... | [] | [] | [
[]
] | ||
5o78b9 | why is field hockey a woman's sport in the us but a men's sport in the rest of the world? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5o78b9/eli5_why_is_field_hockey_a_womans_sport_in_the_us/ | {
"a_id": [
"dch9rjt",
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"score": [
6,
2
],
"text": [
"There is a law in the USA referred to as [\"Title IX\"](_URL_0_) that says educational opportunities cannot discriminate based on gender. \n\nThat includes sports sponsored by schools creating a situation where \"boys\" spor... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Title_IX"
],
[
"https://en.wikipedia.org/wiki/Women's_Hockey_World_Cup",
"http://www.fih.ch/rankings/outdoor/"
]
] | ||
3749u4 | game theory (relating to mathematics and john nash. not video game creation and analysis) | **edits:**
Super helpful explanatory videos:
posted by /u/ruk_hai -- [vid](_URL_0_)
posted by /u/justanothergamer -- [vid](_URL_3_)
playlist posted by /u/mylibertarianaccount -- [vid](_URL_1_)
excellent text explanation by /u/esbio -- [post](_URL_2_) | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3749u4/eli5_game_theory_relating_to_mathematics_and_john/ | {
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"score": [
... | [] | [
"https://www.youtube.com/watch?v=UkXI-zPcDIM",
"https://www.youtube.com/watch?v=iZKErrvVMaY&list=PL76B0EB6DDFC42D02",
"http://www.reddit.com/r/explainlikeimfive/comments/3749u4/eli5_game_theory_relating_to_mathematics_and_john/crjqgxi",
"https://www.youtube.com/watch?v=jILgxeNBK_8"
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[
"https://youtu.be/2d_dtTZQyUM?t=1m10s"
],
[],
[],
[],
[],
[],
[],
[],
[
"http://www.nj.com/middlesex/index.ssf/2015/05/famed_a_beautiful_mind_mathematician_wife_killed_in_taxi_crash_police_say.html"
],
[],
[],
[],
[],
[],
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"http://m.youtube.com/watch?v=S0qjK3TWZE... | |
7usdh2 | Did NASA sterilize the mars rovers to prevent relocating bacterial life to mars? | I'm assuming the rovers were totally cleaned of all "life". You wouldn't want to bring a bacteria or archaea to mars and then "find life" after it fell off your rover and multiplied. | askscience | https://www.reddit.com/r/askscience/comments/7usdh2/did_nasa_sterilize_the_mars_rovers_to_prevent/ | {
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"score": [
11,
206,
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44,
5,
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"text": [
"In short, yes. NASA has pretty strict planetary protection measures in place.\n\n > The United States is a s... | [] | [] | [
[
"https://mars.nasa.gov/msl/mission/technology/insituexploration/planetaryprotection/"
],
[
"https://www.google.com/amp/s/motherboard.vice.com/amp/en_us/article/qkvk33/bacteria-are-so-good-at-surviving-in-space-nasa-needs-a-new-way-to-kill-them"
],
[],
[
"http://nordic.businessinsider.com/nas... | |
69ak21 | Do humans emit X-rays from blackbody radiation? | Infrared is the most well-known light emitted by humans, but what about the other frequencies of light? It seems by [Wien's Law](_URL_0_) that there should be some–albeit a tiny amount–of every frequency emitted, but is this actually the case? | askscience | https://www.reddit.com/r/askscience/comments/69ak21/do_humans_emit_xrays_from_blackbody_radiation/ | {
"a_id": [
"dh556av",
"dh55pr0",
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40,
14,
2
],
"text": [
"I can't do the math right now, but you could calculate the energy emitted per second at your chosen frequency and then divide by the energy of a photon of that frequency; that should give an estimate ... | [] | [
"https://en.wikipedia.org/wiki/Wien%27s_displacement_law"
] | [
[],
[],
[]
] | |
5jqv4t | Is there a difference in warming up my car on a cold day in Park or in Drive? | The parking lot at my work is fairly large, and it takes a minute to navigate out of it. Is there a difference if I let my car idol in Park, or can I put in in Drive and creep forward (not touching the gas pedal at all) with no ill effect? | askscience | https://www.reddit.com/r/askscience/comments/5jqv4t/is_there_a_difference_in_warming_up_my_car_on_a/ | {
"a_id": [
"dbiexgo",
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"score": [
7,
4
],
"text": [
"It depends on how the pump in your (presumably) automatic transmission works. Some are connected to the input shaft and are pumping if the engine is running. Others are connected to the output shaft, and pump only if the c... | [] | [] | [
[],
[]
] | |
2s2l43 | How many cannonballs could a 16th (17th and 18th) century ship take before it sank? | Or was it mainly the crew who died, making sailing further impossible?
Edit: And what was main part to aim for? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2s2l43/how_many_cannonballs_could_a_16th_17th_and_18th/ | {
"a_id": [
"cnloebe",
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],
"score": [
56,
9
],
"text": [
"Note: Parts of my reply here come from an earlier reply of mine [here](_URL_1_).\n\nShips were actually rarely sunk during this era. They floated on their timber and it often took storms breaking them apart for them to sink... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Battle_of_hogland",
"https://np.reddit.com/r/AskHistorians/comments/1pj1ut/how_damaging_would_a_full_broadside_from_hms/cd2thfd",
"http://en.wikipedia.org/wiki/Battle_of_the_Chesapeake"
],
[]
] | |
3eqri1 | why does it seem that there are more news about police brutality/malpractice than actual criminal news in us? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3eqri1/eli5why_does_it_seem_that_there_are_more_news/ | {
"a_id": [
"cthi84t",
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"score": [
3,
2,
3
],
"text": [
"Easy it's a one word answer. That word is money. The media can sell more commercials now a days with police brutality than just regular criminal brutality. ",
"News stations don't report news, they ... | [] | [] | [
[],
[],
[]
] | ||
68t8zq | Does Earth's gravitational field look the same as Earth's magnetic field? | would those two patterns look the same? | askscience | https://www.reddit.com/r/askscience/comments/68t8zq/does_earths_gravitational_field_look_the_same_as/ | {
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"score": [
2824,
75,
36,
10,
10,
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"text": [
"No, Earth's gravitational field is basica... | [] | [] | [
[
"https://www.nasa.gov/sites/default/files/images/607968main_geomagnetic-field-orig_full.jpg",
"https://www.primeeducation.com.au/wp-content/uploads/2016/03/Earth%E2%80%99s-Gravitational-Field.gif"
],
[
"https://www.youtube.com/watch?v=MTY1Kje0yLg"
],
[
"http://www-ssg.sr.unh.edu/tof/Smart/... | |
2kv89i | why are buildings in pripyat in ruins? | So I'm watching a littleYouTube documentary about Chernboyl (Czarnobyl by TubeRaiders if anyone Polish is interested).
I noticed that in all the buildings in Pripyat, the interiors are in ruins. Why is this?
Peoples' possessions are still on the floor and on shelves, but bookshelves and wardrobes have been tipped over,... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2kv89i/eli5_why_are_buildings_in_pripyat_in_ruins/ | {
"a_id": [
"clp0hff",
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"score": [
2,
3
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"text": [
"They are in a state of disrepair. \n\"50,000 people used to live here... Now this place is a ghost town.\"\nGood mission.",
"No, because looting. You don't die instantly from being in an area of high radiation, like part... | [] | [] | [
[],
[]
] | |
ayi9lm | why is adding a dark theme to an app/os so hard and doesn't take just a few color changes? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ayi9lm/eli5_why_is_adding_a_dark_theme_to_an_appos_so/ | {
"a_id": [
"ei0zd3n"
],
"score": [
3
],
"text": [
"from my experience, it's the chaotic way in which designers end up serving specifications. Might be more true in web but designers don't often enough get enough time or info to plan out a theme for their project in such ways that inversions of co... | [] | [] | [
[]
] | ||
mdsy3 | why do we look for faces in everything? | I have always wondered what evolutionary reason we had for making faces out of inanimate objects. it seems most things we make have some face shape. Things like cars, computers, signs, even piles of dirt can seem to have faces, but why is it that we look for them in the first place? | askscience | http://www.reddit.com/r/askscience/comments/mdsy3/why_do_we_look_for_faces_in_everything/ | {
"a_id": [
"c303yeo",
"c303yeo"
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"score": [
5,
5
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"text": [
"its because we are wired to recognize faces.. its primarily how we know who everyone else is. \n\nSince we are primed to learn and see faces we are good at picking them out of random happenstance.\n\n\nThe trait is called [P... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Pareidolia"
],
[
"http://en.wikipedia.org/wiki/Pareidolia"
]
] | |
10j28t | Before readily available contraceptives, how did the sexual relationship between married couples work? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/10j28t/before_readily_available_contraceptives_how_did/ | {
"a_id": [
"c6dwj5k",
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"score": [
5,
5
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"text": [
"The most common form of natural conception was, somewhat unsurprisingly, simply not having sex at all. There's some evidence for withdrawal being used, but by and large 'stopping' (as demographic historians call it) was the ... | [] | [] | [
[],
[
"http://www.amazon.com/At-Home-Short-History-Private/dp/0767919386"
]
] | ||
dd06vq | Why do prunes have more sorbitol than plums? | askscience | https://www.reddit.com/r/askscience/comments/dd06vq/why_do_prunes_have_more_sorbitol_than_plums/ | {
"a_id": [
"f2ds9h7",
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"score": [
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4
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"text": [
"Disclaimer: I'm a biochemist with no experience with plants, so this answer may be missing a lot of key elements. But this question got me interested, so I spent half an hour reading papers to try to figure it out. \n\nMy fa... | [] | [] | [
[
"https://link.springer.com/chapter/10.1007/978-4-431-55251-2_5",
"https://link.springer.com/chapter/10.1007/978-4-431-55251-2\\_5"
],
[]
] | ||
2dhxrt | how do people get the smooth motion moving a camera in this video? | In the [video here](_URL_0_) the camera moves in slow motion through the scene. How do they get such smooth movement when it's taking thousands of photos? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2dhxrt/eli5_how_do_people_get_the_smooth_motion_moving_a/ | {
"a_id": [
"cjpru2x"
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"score": [
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"text": [
"If you are wondering about how they get the camera to move smoothly over a period of minutes or hours, they are using a motorized camera slider, which is a track with a small motor that can move the camera along it and also tilt the camera at any... | [] | [
"http://vimeo.com/103223164"
] | [
[]
] | |
69lraj | what is an "outgoing introvert" and how does it differ from a regular introvert? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/69lraj/eli5_what_is_an_outgoing_introvert_and_how_does/ | {
"a_id": [
"dh7izcv"
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"score": [
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"text": [
"Basically, being an introvert describes how your energy level and ability to recharge changes when experiencing social interactions. Introverts are drained by social interaction and need alone time to recharge.\n\nBut this is different than bein... | [] | [] | [
[]
] | ||
11aoag | Why is yellow ink red? | For example in food coloring or an inkjet cartridge - the liquid looks red. | askscience | http://www.reddit.com/r/askscience/comments/11aoag/why_is_yellow_ink_red/ | {
"a_id": [
"c6ksldm"
],
"score": [
41
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"text": [
" > I remember looking at a white wall through a vial of yellow food-coloring liquid, and seeing it as red. That’s because the transmission spectrum goes from very low at the short-wavelength (blue) end of the spectrum to nearly 1 at the long-wa... | [] | [] | [
[
"http://hueangles.blogspot.se/2009/02/michael-h.html"
]
] | |
lzswz | Would we be better off with another numeral system, such as the octal? | Would it be more practical to use the octal numeral system?
What benefits and drawbacks would there be? | askscience | http://www.reddit.com/r/askscience/comments/lzswz/would_we_be_better_off_with_another_numeral/ | {
"a_id": [
"c2wxpl3",
"c2wxpl3"
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"score": [
5,
5
],
"text": [
"Which number system we use is largely arbitrary. Most base systems are a balance between numbers that are needlessly long, (10,000 is 111110100010011100010000 in binary - that's 25 digits), or needlessly complicated, (a syst... | [] | [] | [
[
"http://books.google.com/books?id=xlzCWmXguwsC&pg=PA92&lpg=PA92#v=onepage&q&f=false"
],
[
"http://books.google.com/books?id=xlzCWmXguwsC&pg=PA92&lpg=PA92#v=onepage&q&f=false"
]
] | |
20wi8k | What are some specifics on aviation during World War Two? (Detailed questions inside) | I'm writing an essay about the Bombing of Auschwitz for a third year Holocaust course (I'm graduating this year), and I have had some experience about this debate but I'm a bit stuck on the actual planes that were used and some terminology.
First and foremost, what is the 'range' of a plane. I've been researching all... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/20wi8k/what_are_some_specifics_on_aviation_during_world/ | {
"a_id": [
"cg7dslt",
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5,
3,
2
],
"text": [
"If you are going to discuss attacking rail lines, you will want to reference *Engines of War* by Christian Wolmar. In it, he details the resilience of the German rail network in WWII. Most attacks on ... | [] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Operation_Tidal_Wave"
]
] | |
a22738 | explain what’s happening here causing the bread to effectively vacuum seal itself | [bread front and pack](_URL_0_)
Can anyone explain what’s happening here? The packet on the left has been left under the stairs for a few months, taken out and now all the air seems to have disappeared from the packet. And on the right is a fresh packet of the gluten free bread rolls. Maybe it’s an ingredient in the b... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/a22738/eli5_explain_whats_happening_here_causing_the/ | {
"a_id": [
"eauj8ee"
],
"score": [
2
],
"text": [
"Expired? Mouldy and decomposing? "
]
} | [] | [
"https://imgur.com/gallery/WMcDmT7"
] | [
[]
] | |
1b1m1r | why can't you give blood if you've received blood? | I've always wanted to give blood so I looked on the UK blood donor website and one of the items which would disqualify you from donation was if you had received or think you might have received blood since 1st January 1980. I suffered a ruptured appendix and subsequent blood poisoning in 2003 so I have definitely recei... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1b1m1r/eli5_why_cant_you_give_blood_if_youve_received/ | {
"a_id": [
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"score": [
56,
12
],
"text": [
"Actually no, in your case it's about [mad cow disease.](_URL_0_) ",
"In general, it's to stop blood-borne disease having a ready-made transmission vector through transfusions (which are conveniently often given to peop... | [] | [] | [
[
"http://www.redcrossblood.org/donating-blood/eligibility-requirements/eligibility-criteria-alphabetical-listing#arc5"
],
[]
] | |
49o4y8 | How serious a threat was heresy to the Catholic Church in the Middle Ages? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/49o4y8/how_serious_a_threat_was_heresy_to_the_catholic/ | {
"a_id": [
"d0tdp0f"
],
"score": [
9
],
"text": [
"A reply to /u/FineFuse\n\nRather than directly answer this very complex question, I would like to challenge the scoping of your question as follows. \n\nThe Catholic Church in the middle ages, which by the way spans a huuuuuuuuuuuge timeline and ... | [] | [] | [
[]
] | ||
51thnl | Did ancient civilizations have banks? When did ideas like loans with interest come about? | Someone told me that building on credit, as in taking out a loan for the purpose of making something and using the return on that investment to pay the loan was a medieval investment and didn't exist in the roman world. Is that true at all? Did the Romans and Greeks have no banks? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/51thnl/did_ancient_civilizations_have_banks_when_did/ | {
"a_id": [
"d7euep4"
],
"score": [
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],
"text": [
"Rome absolutely had bankers (argentarii), who follow our concept of modern banking in the broad sense. At least at first these bankers were often located in temples (where coins were minted) but not exclusively. They'd usually be in a fairly inf... | [] | [] | [
[]
] | |
6dssj4 | Were there Renaissance English writers able to read works written in Old English? | I am thinking of famous ones like Shakespeare, Marlowe, etc. And if the answer is 'No', do we have evidences that at least some of them were aware of the existence of Old English literatures? Thanks. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6dssj4/were_there_renaissance_english_writers_able_to/ | {
"a_id": [
"di5j67h"
],
"score": [
3
],
"text": [
"Shakespeare's commonly-recognized sources include no Old English works (though they do include Chaucer). His sources for English history, like Holinshed's Chronicles, were roughly contemporaneous (and are recognizably the same language we speak t... | [] | [] | [
[
"http://www.cems.ox.ac.uk/holinshed/chronicles.shtml"
]
] | |
80n7cy | why does any injury hurt more the next day | Why does the pain of some injury manifests itself after the body has rested for a prolonged time instead of time when the injury actually occurs. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/80n7cy/eli5_why_does_any_injury_hurt_more_the_next_day/ | {
"a_id": [
"duwq6oz"
],
"score": [
6
],
"text": [
"Your body is repairing itself. It may be swelling due to inflammation as well.\n\nAlso the endorphins that your body released at the time of injury are now gone, so no more natural pain killers.\n\n"
]
} | [] | [] | [
[]
] | |
175opg | why should mushrooms be brushed off rather than washed, before cooking? can you really taste the difference? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/175opg/eli5_why_should_mushrooms_be_brushed_off_rather/ | {
"a_id": [
"c82fohf"
],
"score": [
2
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"text": [
"People say not to wash mushrooms as they may take on water and lose flavour. However mushrooms are mostly water and washing them shouldn't be a problem anyway. Brushing off rather than washing is a myth."
]
} | [] | [] | [
[]
] | ||
khys2 | stocks that don't pay dividends | Why people buy stocks that don't pay dividends? I know that some of then allows a vote but in a big company you would need spend really big money to make a diference. For example, Apple. Why should I buy Apple stock? Why would I want such a small part of such a big company? I would understand if you are buying 10% or 2... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/khys2/eli5_stocks_that_dont_pay_dividends/ | {
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"text": [
"You can make money on shares that don't pay dividends by buying them at one price and selling them for more. \n\nIf you buy a share of The Company for $100. Six months later, the m... | [] | [] | [
[],
[],
[],
[]
] | |
1g55ow | I can't seem to understand escape velocity. People say it's the minimum velocity to escape a gravitational field, but don't gravitational fields extend indefinitely? | How do you specifically define when you've "escaped?" Isn't it more of a spectrum, i.e., at this one velocity it'll take a minute to fall back down, at this other velocity it'll take a day, at this other velocity a year?
Of course after a point I know other gravitational bodies would start to take over, but a dependen... | askscience | http://www.reddit.com/r/askscience/comments/1g55ow/i_cant_seem_to_understand_escape_velocity_people/ | {
"a_id": [
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"score": [
8,
3,
3
],
"text": [
"If the earth were the only celestial body in the universe and we shot a rocket with escape velocity (~11 km*h^-1 ) into space, it would never, not even after an infinite amount of time, change direction... | [] | [] | [
[],
[],
[]
] | |
2xfbu2 | what's the point in distributing a video as a .rar file rather than an .avi or .mp4 file? | As far as I can tell, it just adds a pointless extra step where you have to extract the data. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2xfbu2/eli5_whats_the_point_in_distributing_a_video_as_a/ | {
"a_id": [
"cozm23l",
"cozm8mk"
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"score": [
3,
3
],
"text": [
"A rar can be split into several parts. So if a download fails part way through you just have to retry a part instead of the whole thing",
"It prevents people from streaming your video by hotlinking in addition to jedward... | [] | [] | [
[],
[]
] | |
38wi1s | Did the income of the Papacy decrease dramatically as a result of the reformation? | Was the break from Rome in England and elsewhere in Europe during the reformation cause a noticeable decrease in the level of income the Papacy generated? And if so, what effect did this have on the Catholic Church as a whole? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/38wi1s/did_the_income_of_the_papacy_decrease/ | {
"a_id": [
"cryl873",
"cryzows"
],
"score": [
20,
2
],
"text": [
"I have been interested in this topic and the catholic finance situation in general. Can someone suggest some books?",
"I can't speak for the Reformation, but 150 years or so before, the Western Schism certainly impacted... | [] | [] | [
[],
[]
] | |
34mahh | why does hate speech and whatever motives behind it still exist? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/34mahh/eli5_why_does_hate_speech_and_whatever_motives/ | {
"a_id": [
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"score": [
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2
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"text": [
"Humans spent the first 200,000 years of their existence in tribes.\n\nNon-human hominids spent millions of years before that in tribes.\n\nHumans have tribalism evolutionarily ingrained in their brains, there's our \"tribe\"... | [] | [] | [
[],
[]
] | ||
2tdniy | how come during olympics in beijing there was hardly any smog but in reality it's hard to see anything out there because of it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2tdniy/eli5_how_come_during_olympics_in_beijing_there/ | {
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"text": [
"It was there it was just not shown, but I remember the athletes talking about how they had to prepare in special conditions that would match the polluted environment ",
"My un... | [] | [] | [
[],
[],
[],
[]
] | ||
5egtmu | why do game developers keep stuff loaded out-of-screen? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5egtmu/eli5_why_do_game_developers_keep_stuff_loaded/ | {
"a_id": [
"dacbiy4",
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"score": [
2,
2
],
"text": [
"Moving things to different locations keeps them \"in memory\", where it's already loaded and really quick to use/move/whatever.\n\nIf stuff is deleted the second it disappears off screen, it has to re-loaded from the hard dr... | [] | [] | [
[],
[]
] | ||
x2irt | Why are 100m athletes built like tanks in upper body? | I was watching the BBC documentary on bolt and saw yohan blake and remembered that other famous sprinters on 100m are built like tanks(not all but many) i know that you need explosive force for this kind of competition but i guess it should limited to lower body in general.I also guess that they must train every part w... | askscience | http://www.reddit.com/r/askscience/comments/x2irt/why_are_100m_athletes_built_like_tanks_in_upper/ | {
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"score": [
20,
12,
4,
2,
2
],
"text": [
"Sprinters will often spend a lot of time working the upper body to help with their economy as they run. I recently saw a BBC documentary about Usain Bolt an... | [] | [
"globally.So",
"http://jamaica-gleaner.com/gleaner/20110829/sports/images/YohanBlakeJ20110828RM_2.jpg",
"http://media.lawrence.com/img/photos/2006/04/19/Shawn_Crawford_RELAYS_vert.jpg"
] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Ben_Johnson_(sprinter\\)"
],
[],
[]
] | |
4dpk9i | the different military paths to becoming a civilian physician. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4dpk9i/eli5the_different_military_paths_to_becoming_a/ | {
"a_id": [
"d1t7gmr"
],
"score": [
2
],
"text": [
"Better to ask a school counselor. \n\nThere are 2 obvious ones, go into the military and get the G.I. BILL and use it to pay off college to become a physician. \n\nOr go into the military, preferably through OTC with some school under your belt m... | [] | [] | [
[]
] | ||
12ibio | How large would the biggest star known to man look in the sky if we were to orbit the star in the so called Habitable zone? | Would the [habitable zone](_URL_0_) of any star with the same luminosity (like our sun) make it look just as big on the sky even if it's diameter was bigger/smaller than the sun, my guess is that the habitable zone would expand and differ depending on the diameter of the star.
Thanks for taking the time to read. | askscience | http://www.reddit.com/r/askscience/comments/12ibio/how_large_would_the_biggest_star_known_to_man/ | {
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"score": [
1254,
38,
24,
7,
16,
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2,
2,
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3
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"text": [
"The size of a star in the sky is dependent... | [] | [
"http://en.wikipedia.org/wiki/Habitable_zone"
] | [
[
"http://www.reddit.com/r/askscience/comments/12ibio/how_large_would_the_biggest_star_known_to_man/c6vavg7",
"http://www.astronomy.com/en/News-Observing/Ask%20Astro/2010/11/Not%20so%20habitable.aspx",
"http://en.wikipedia.org/wiki/Vy_canis_majoris"
],
[
"http://en.wikipedia.org/wiki/Solar_lumin... | |
1n288f | Catholic church appropriation of local gods in the Americas/New World | It is pretty obvious that when the New World was rediscovered the Catholic church went on to replace the local gods(e.g. Pachamama) with their own representations(e.g.Virgin Mary). Is there any historical record of this process? Are there any historical authors that deal/have studied about this type of synchretism? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1n288f/catholic_church_appropriation_of_local_gods_in/ | {
"a_id": [
"ccessw7",
"ccfack9"
],
"score": [
2,
2
],
"text": [
"I can't speak on other places, but, a lot of my research deals with this in New Mexico and the relationship between the Catholic Church and the Pueblo Indians. At many, most, of the pueblos, the Catholic/Spaniard would tear ... | [] | [] | [
[],
[]
] | |
350449 | Are higher energy electromagnetic waves like gamma rays and lower energy ones like radio waves composed of photons as well, similar to the visible light spectrum? | askscience | http://www.reddit.com/r/askscience/comments/350449/are_higher_energy_electromagnetic_waves_like/ | {
"a_id": [
"cqzoo02"
],
"score": [
4
],
"text": [
"Yes, there is nothing fundamentally different about electromagnetic waves at different energies."
]
} | [] | [] | [
[]
] | ||
1r57f2 | Is it possible/common to get ill from a single bacterium? | What kind of quantity of bacteria is needed to make someone ill? If their body hasn't come across it before, are just a few bacteria enough to make someone ill, or do there need to be thousands/millions? | askscience | http://www.reddit.com/r/askscience/comments/1r57f2/is_it_possiblecommon_to_get_ill_from_a_single/ | {
"a_id": [
"cdjrf7z",
"cdjvsro"
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"score": [
6,
2
],
"text": [
"It varies, even with Salmonella for example a few bacteria (10-20) can cause illness in the right circumstances where in other cases it will take millions. 1 Bacterium could cause illness but it is unlikely. ",
"As state... | [] | [] | [
[],
[]
] | |
15sru1 | why are there several mandatory injections for schools? | Recently I received a notice from my school stating that I needed to receive a shot. Failure to comply would mean suspension* Is this within the school's scope of power? Also, what's the general purpose of these shots? Any alterior motives?
*The notice was given to me at school. Hopefully that clears some confusion up... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/15sru1/eli5_why_are_there_several_mandatory_injections/ | {
"a_id": [
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"score": [
10,
3,
2
],
"text": [
"Schools are the perfect places for diseases to spread. In order to protect the other students schools are allowed to mandate that you get vaccinated for some diseases. Some people cannot get vaccinated... | [] | [] | [
[],
[],
[]
] | |
1f2rpy | sharia courts in the uk | They apparently they only deal with small disputes and family disputes at the moment.
But why are they allowed?
All I have heard is that they simply act to remove the rights of women in the court room. Even if it is optional surely women from Muslim communities will be forced to go even if they don't agree?
Why a... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1f2rpy/eli5_sharia_courts_in_the_uk/ | {
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31,
5,
3
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"text": [
" > Even if it is optional surely women from Muslim communities will be forced to go even if they don't agree?\n\nIt's possible in any circumstance for people to be forced into doi... | [] | [] | [
[],
[],
[],
[
"http://bethdin.org/arbitration-mediation.asp"
]
] | |
pzxdl | What kind of condiments were available in the Ist century AD in Eastern-Europe? | As far as I know, most of the Eastern-European food is heavily influenced by the Turkish cusine. I would find interesting to know what was the taste of food in the post-romanic, pre-turkic period.
EDIT: Not Ist century, but first milenia. My bad. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/pzxdl/what_kind_of_condiments_were_available_in_the_ist/ | {
"a_id": [
"c3tlv60",
"c3uuucx"
],
"score": [
7,
3
],
"text": [
"Unfortunately, this isn't something we know very well. Eastern Europe as we think of it was generally too far away from the literate civilizations to actually have detailed ethnographies on it, and archaeology won't turn up ... | [] | [] | [
[],
[]
] | |
9o59tu | how does a clicking torque wrench work? | I cannot find any clear diagrams or explanations of how clicking torque wrenches work on a mechanical level. Can anyone explain (possibly with diagrams) ? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9o59tu/eli5_how_does_a_clicking_torque_wrench_work/ | {
"a_id": [
"e7rh6dl",
"e7rmy21"
],
"score": [
4,
3
],
"text": [
"On mine, the handle flexes once the set value is reached. There is a spring of sorts inside which creates resistance to keep the handle straight. You adjust the amount of force needed to \"pop the spring\" and make the handl... | [] | [] | [
[],
[
"https://pickthetools.com/torque-wrench-work/"
]
] | |
tr055 | What are some biological and/or chemical differences between men and women that, if mentioned, society would mistaken it for sexism? | askscience | http://www.reddit.com/r/askscience/comments/tr055/what_are_some_biological_andor_chemical/ | {
"a_id": [
"c4ozany",
"c4ozi40",
"c4ozrnm"
],
"score": [
4,
3,
3
],
"text": [
"Brain size. On average, the male brain is larger than the females. However, size is not a measure of intelligence. It is just like a 6 ft tall, 190 lb man will have a larger heart than a 5 ft 7 in, 130l... | [] | [] | [
[],
[
"http://www.reddit.com/r/askscience/comments/s2mlm/what_behavioral_differences_exist_between_men_and/c4apviv"
],
[]
] | ||
90q20u | Why is HIV found in semen? | HIV being a virus of the immune system, it makes sense to me that it is found in the bloodstream but not in other bodily fluids like saliva/nasal mucus/etc. So why then is it present in semen and vaginal mucus when neither of these fluids have any connection (that I know of) to immune function? | askscience | https://www.reddit.com/r/askscience/comments/90q20u/why_is_hiv_found_in_semen/ | {
"a_id": [
"e2t4wgm"
],
"score": [
14
],
"text": [
"HIV is present in saliva, but is non-infectious. It is non-infectious due to a mechanism called hypotonic disruption that kills infected mononuclear leukocytes and thwarts their attachment to mucosal epithelial cells thus preventing transmission... | [] | [] | [
[]
] | |
364s3a | Why are caffeine and alcohol both mind altering, addictive drugs and also strong diuretics? | It seems strange to me that the two most commonly consumed mind altering drugs happen to be strong diuretics. Is there a mechanism to explain this or is it just coincidence? | askscience | http://www.reddit.com/r/askscience/comments/364s3a/why_are_caffeine_and_alcohol_both_mind_altering/ | {
"a_id": [
"craw1aa"
],
"score": [
7
],
"text": [
"I will go by each substance first. \n\nCaffeine \nThe reason for caffeine being a diuretic is because it blocks the adenosine receptors in the proximal tubule of the kidney. \n\nAlcohol \nNow alcohol on the other hand inhibits the anti-diuret... | [] | [] | [
[]
] | |
22rk5l | why aren't catholics considered christian? | I thought to be Christian one merely had to believe Jesus is the lord and savior, died for your sins etc. Catholics believe this. Yet when I mention this to some people, they insist Catholics aren't Christian. I understand the differences between Protestantism and Catholicism, but aren't both of them under the general ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/22rk5l/eli5_why_arent_catholics_considered_christian/ | {
"a_id": [
"cgporr4",
"cgpoydr",
"cgpphq8"
],
"score": [
4,
3,
6
],
"text": [
"Catholicism is Christian, but are often segregated away from the rest of Christianity because they are the largest part of Christendom.\n\nSaying Catholics and Christians is like saying Dogs and Wolves.... | [] | [] | [
[],
[],
[]
] | |
1m5rea | Is everything moving away from our galaxy or are some galaxies moving at the speed and direction of us? | askscience | http://www.reddit.com/r/askscience/comments/1m5rea/is_everything_moving_away_from_our_galaxy_or_are/ | {
"a_id": [
"cc621w8"
],
"score": [
6
],
"text": [
"Expansion is carrying galaxies that are very far from us further away, but there are plenty of local galaxies that are moving toward or past us. For example, the Andromeda galaxy is on a collision course with our own."
]
} | [] | [] | [
[]
] | ||
6v3yyn | A lot of Andalusian architecture stayed after the Reconquista--did many Arabic designs survive after the Norman conquest of Sicily? | You can still see a lot of architecture and design from Muslim Iberia well after the Christian conquests. Sicily changed hands several times through the middle ages, so I was wondering what arts and "interior design" aesthetics stuck around even after the Normans took the Emirate of Sicily. I know a lot of place-names ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6v3yyn/a_lot_of_andalusian_architecture_stayed_after_the/ | {
"a_id": [
"dlyhzlh",
"dlyouoj"
],
"score": [
13,
9
],
"text": [
"Combining early modern Spain's fixation on being the Christianest kingdom that ever Christianed with the Sicilian Normans' strategic deployment of Arab/Islamic models of governance and asserting power, you'd think it would ... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/4yd1o2/what_lasting_cultural_effects_did_the_arab/d6mw8j6/"
],
[
"http://i.imgur.com/nGnCCyO.jpg",
"https://upload.wikimedia.org/wikipedia/commons/4/47/Palermo-Zisa-bjs-3.jpg",
"https://upload.wikimedia.org/wikipedia/commons/a/ac/Palermo-Zisa-bj... |
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