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 |
|---|---|---|---|---|---|---|---|---|---|
3rx8bt | how does new york have a service economy when the rent is so high? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3rx8bt/eli5_how_does_new_york_have_a_service_economy/ | {
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"They don't live in Manhattan or Brooklyn... they live in the less expensive boroughs like the Bronx or Queens. And they cram more people/family members into apartments than elsewhere.",
"A waiter o... | [] | [] | [
[],
[],
[]
] | ||
1nwud6 | Monday Mysteries | Secret Societies, Cults and Organisations | **Previously:**
- [Astonishing individuals](_URL_14_)
- [Suggestion thread](_URL_22_)
- [More research difficulties](_URL_8_)
- [Most outlandish or outrageous historical claims](_URL_11_)
- [Inexplicable occurrences](_URL_23_)
- [Lost (and found) treasures](_URL_18_)
- [Missing persons](_URL_5_)
- [Mysterious images](... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1nwud6/monday_mysteries_secret_societies_cults_and/ | {
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"score": [
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"text": [
"My favourite cult has always been the one... | [] | [
"http://www.reddit.com/r/AskHistorians/comments/1ce73h/monday_mysteries_notable_disappearances/",
"http://www.reddit.com/r/AskHistorians/comments/1fl9uw/monday_mysteries_local_history_mysteries/",
"http://www.reddit.com/r/AskHistorians/comments/1gz7ac/monday_mysteries_your_family_mysteries/",
"http://www.redd... | [
[
"http://en.wikipedia.org/wiki/Hassan-i_Sabbah"
],
[],
[
"http://g1b2i3.files.wordpress.com/2011/06/jacopo-amigoni-jacopo-amigoni-and-his-portrait-of-farinelli-and-friends.jpg",
"http://en.wikipedia.org/wiki/File:GarterInsigniaBurkes.JPG",
"http://journals.cambridge.org/action/displayAbstract... | |
1ipjoz | Have terrorists through history ever succeeded in achieving their political/ideological aims? | I didn't see anything in the FAQ after a cursory look and this question interests me. I know the definitions will get murky, and honestly the debate over what the term means is half the reason I wanted to ask this question.
As a starting off point, lets riff off Kissinger and assume "terrorists are really people that ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1ipjoz/have_terrorists_through_history_ever_succeeded_in/ | {
"a_id": [
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"text": [
"In short, no, at least going off of the definition of terrorism you wish to be used. This isn't, however, to say that terrorist groups do not effect change in the domestic or international scene. There are really two levels of objectives for te... | [] | [] | [
[
"http://www.amazon.com/Bringing-War-Home-Underground-Revolutionary/dp/0520241193/ref=sr_1_1?s=books&ie=UTF8&qid=1374362590&sr=1-1&keywords=bringing+the+war+home+the+weather+underground",
"http://www.amazon.com/How-Terrorist-Groups-End-Countering/dp/0833044656/ref=sr_1_1?s=books&ie=UTF8... | |
5blgzi | when using virtual reality devices like the vive or rift, how do our eyes focus on 'distant' objects when they are really only centimetres away? | Do our eyes react in the same way as they do in the physical world? Or is there some trick being played? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5blgzi/eli5_when_using_virtual_reality_devices_like_the/ | {
"a_id": [
"d9pf8u8",
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2
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"text": [
"The lenses in VR device put the image at a distance. Early prototypes used infinite distance because reasons(similar how stars are essentially infinite distance away as far as your eye focus goes), it didn't really affect im... | [] | [] | [
[],
[]
] | |
39x3bm | why was dragon ball gt considered so bad compared to dragon ball and dragon ball z? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/39x3bm/eli5why_was_dragon_ball_gt_considered_so_bad/ | {
"a_id": [
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"text": [
"I don't know what the general criticisms are, but, personally, Z did a better job building tension and had far stronger villains/plot arcs. GT felt like a hokey pseudo-parody of Z. Then again, I was qui... | [] | [] | [
[],
[],
[]
] | ||
1obkn8 | A good biography of Lenin | What it says on the tin. Looking for a biography or, ideally, a pair of biographies with opposing view points about good 'ol Vladimir Ilyich. I'm fairly familiar with late Russian somewhat less so early Soviet history, so I'm looking for something fairly comprehensive. Any suggestions? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1obkn8/a_good_biography_of_lenin/ | {
"a_id": [
"ccqpei9"
],
"score": [
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],
"text": [
"There's a great little book called [\"Lenin for Beginners\"](_URL_0_), which I highly recommend. \nIf you're looking for something more standard, give [this one](_URL_2_) a go. \n\n\nIf you ask me, I'd say you can't view Lenin in a proper conte... | [] | [] | [
[
"http://ge.tt/4vmCgvT/v/0?c",
"http://www.marxists.org/reference/archive/stalin/works/1939/x01/",
"http://www.amazon.com/Lenin-Reaktion-Books-Critical-Lives/dp/1861897936/ref=sr_1_1?ie=UTF8&qid=1351464974&sr=8-1&keywords=lih+lenin"
]
] | |
4n8csp | are the acid levels in the hot springs at yellowstone park enough to dissolve a human body? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4n8csp/eli5are_the_acid_levels_in_the_hot_springs_at/ | {
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"text": [
"The [pH of the water in the acid springs is in the 2-3 range](_URL_0_ ), that's in the lemon juice-vinegar range. This will not dissolve a human body for a very long time. Many of the pools and geysers have underground st... | [] | [] | [
[
"https://microbewiki.kenyon.edu/index.php/Yellowstone_Acid_Pools"
],
[]
] | ||
5z4wmm | Comrades: A World History of Communism - Its just me or this book is biased ? | I found a reference when author of Stalin: The Court of the Red Tsar, give a thanks for helping in his book to Robert Service. So I borrow his book, Comrades: A World History of Communism but I found it very odd.
Montefiore Stalin was a great book in portraiting a man in every aspect of his life which was due to poli... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5z4wmm/comrades_a_world_history_of_communism_its_just_me/ | {
"a_id": [
"devk1a1"
],
"score": [
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"text": [
"**Part 1**\n\nAh yes, Robert Service, focal point of lots of controversy and yet still somehow getting glowing press reviews for the most part.\n\nTo put it very succinctly: Your impression that Service is biased is completely spot on, at least ... | [] | [] | [
[
"https://www.theguardian.com/books/2007/may/12/featuresreviews.guardianreview8",
"https://academic.oup.com/ahr/article-lookup/doi/10.1086/ahr.116.3.900",
"https://books.google.de/books?id=q_JoAAAAMAAJ&q=robert+payne+life+and+death+of+trotsky&dq=robert+payne+life+and+death+of+trotsky&hl=de&... | |
bkaubt | if a helicopter were to hover 12 hours without moving forward, would it be on the other side of the world? | Ok I know it sounds dumb. But I came across a flat earth thing that people are making fun of that said “if the earth really were spinning, a helicopter could hover in one spot for 12 hours and be on the other side of the world.” Why is that laughable? I don’t know how the physics of that works, but it feels like a heli... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bkaubt/eli5_if_a_helicopter_were_to_hover_12_hours/ | {
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"text": [
"No.\n\nAll of the air in the atmosphere is spinning with the Earth. I... | [] | [] | [
[
"https://youtu.be/K0-GxoJ_Pcg"
],
[],
[],
[],
[],
[],
[],
[],
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] | |
4pmui9 | How have the nutritional value of crops such a wheat changed over the last 1000 years and why? | askscience | https://www.reddit.com/r/askscience/comments/4pmui9/how_have_the_nutritional_value_of_crops_such_a/ | {
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"text": [
"This is nearly impossible to determine considering the chemical makeup of our foods hasn't been studied with modern peculiarity for very long. The history of enrichment and GMO sourcing would be a good start and you can alm... | [] | [] | [
[],
[
"http://www.sciencedirect.com/science/article/pii/S0734975014001931",
"https://en.wikipedia.org/wiki/Vitamin#History"
]
] | ||
4d38vd | Is it possible that dinosaur fossils played some role in the origin of dragon myths? | This is something I've wondered about for a long time. Dinosaur fossils have (obviously) existed for the entire history of humanity, and while some are deeply buried, many (especially the first ones discovered) are near or on the surface, and quite easy to find. This, combined with the fact that humans have been diggin... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4d38vd/is_it_possible_that_dinosaur_fossils_played_some/ | {
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"text": [
"It is possible, yes, that fossils (not necessarily just dinosaur fossils) did play a role in the development of dragon myths. It's mostly all speculation, really. \n\nMost fossil... | [] | [] | [
[],
[
"https://www.reddit.com/r/AskHistorians/wiki/faq/religion#wiki_here_be_dragons"
],
[],
[
"https://en.wikipedia.org/wiki/Wrangel_Island#cite_note-Vartanyan1-10",
"https://www.penguin.co.uk/books/187609/ibn-fadlan-and-the-land-of-darkness/"
]
] | |
1olsf3 | why is hitting your child legal (corporal punishment) when hitting an adult isn't? | As a young adult who was constantly abused physically and emotionally as a child/teenager, I've always wondered how it can be illegal for an adult to strike another human being without consent, yet it is legal for an adult to physically strike their child, who is incapable of retaliation or self-defense.
| explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1olsf3/eli5_why_is_hitting_your_child_legal_corporal/ | {
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"score": [
8,
2,
2
],
"text": [
"the fuzzy gray line lies around intention to discipline not intention to inflict harm. ",
"I've only spanked one of my children maybe three times in 19 years. Every single time it was over something... | [] | [] | [
[],
[],
[]
] | |
32p4ql | how does edward snowden's protection in russia work? | (Sorry if I can't explain myself very well - english isn't my first language)
I was wondering how can Russia give him asylum and not have the US come get him. I know and understand how refugees work, and that Snowden technically didn't commit any crime, but I'm interested in knowing how can Russia protect him and how ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/32p4ql/eli5_how_does_edward_snowdens_protection_in/ | {
"a_id": [
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"score": [
42,
6,
2
],
"text": [
"* Russia is not the US, so US law doesn't apply there. They can't just invade Russia and take him.\n\n* The US must ask for Russia to \"extradite\" him (meaning to willingly turn him over to US author... | [] | [] | [
[],
[],
[]
] | |
41ip4n | Why do electric engines don't have gear box? | So to give a little bit of context, the other day i was browsing the tesla car web and i found out that the cars didn't have clutch pedal.
I thought that would be because they had an automatic gear box but the thing is they just have one gear.
I was trying to look for an answer and i found that they don't need gears b... | askscience | https://www.reddit.com/r/askscience/comments/41ip4n/why_do_electric_engines_dont_have_gear_box/ | {
"a_id": [
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"score": [
16,
2,
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],
"text": [
"I'm not an engineer, but I am a physicist with a car hobby, so I think I can answer. The simplest answer has to do with the speeds of the energy source involved. Let me explain:\n\nThe reason why an ... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Electromotive_force",
"https://en.wikipedia.org/wiki/Reciprocating_engine",
"https://en.wikipedia.org/wiki/Air%E2%80%93fuel_ratio",
"https://en.wikipedia.org/wiki/Crankshaft",
"https://en.wikipedia.org/wiki/Variable_valve_timing",
"https://en.wikipedia.org/wi... | |
5z76m3 | when financial companies "buy" commodities, how are they stored? or they buying "rights" to have them at that price? | I've recently read about this fund company possessing more $2.3B worth of sugar and I was wondering how are they stored? Is it up to the financial company to pay for storage for such goods? How does it work?
Source: _URL_0_ | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5z76m3/eli5_when_financial_companies_buy_commodities_how/ | {
"a_id": [
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"text": [
"They are buying \"futures\". These are contracts for a ton of soybeans in 4 months. Speculators buy them in hopes the price will be high and someone who needs soybeans to make their product will buy the contract for more ... | [] | [
"https://www.fnlondon.com/articles/futures-trader-goes-on-sugar-binge-20170308"
] | [
[],
[]
] | |
azm7r0 | Has any virus or bacteria in humans ever mutated within us to then become a serious illness elsewhere in the animal kingdom? | askscience | https://www.reddit.com/r/askscience/comments/azm7r0/has_any_virus_or_bacteria_in_humans_ever_mutated/ | {
"a_id": [
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"text": [
"_URL_0_\n\nChitrid disease in amphibians which is single handedly wiping out species across the earth is apparently spread by skin to skin contact from a fungus sometimes found on the hands of people.\nIt doesn't really affect people as far as I ... | [] | [] | [
[
"https://en.m.wikipedia.org/wiki/Anthroponotic_disease"
]
] | ||
4bc8cu | what happens when a person such as myself, who's maybe worth $18,000 on a good day, gets sued for $10 million? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4bc8cu/eli5_what_happens_when_a_person_such_as_myself/ | {
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13,
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"text": [
"Lawyer here.\n\nThe trial goes ahead to determine two things: Have you wronged the person suing, you, and if so, how much money do you owe them to make it right?\n\nLet's say a c... | [] | [] | [
[
"https://www.youtube.com/watch?v=3ctLEGrOmf4"
],
[],
[],
[]
] | ||
9jtv46 | why do computers have a shutdown process instead of just cutting it's own power? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9jtv46/eli5_why_do_computers_have_a_shutdown_process/ | {
"a_id": [
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"text": [
"For the same reason that people generally lie down before going to sleep instead of just falling over: To avoid damage. \n\nAt any given time, a computer is running a lot of pro... | [] | [] | [
[],
[],
[],
[]
] | ||
1mvyaz | internet infrastructure. | I have a decent laymans understanding of it but I thought this could be a good ELI5 question anyway. In other words, I know how the internet works, how does it REALLY work? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1mvyaz/eli5_internet_infrastructure/ | {
"a_id": [
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"score": [
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"text": [
"Inside your computer is something called a NIC (Network Interface Card). It has two main jobs - send data, and receive data.\n\nHook it up to another computer via an Ethernet cable and you have a simple network. Your computer's send is hooked up ... | [] | [] | [
[
"http://www.theguardian.com/world/2011/apr/06/georgian-woman-cuts-web-access",
"www.google.com"
]
] | |
59b3zl | What are the best books on the everyday life of individuals in the past? | I'm looking for books that give an insight into what life was like for normal people, over 100 years ago (kind of vague, but I don't mind which time-period/geographic area). Which books/sources can you recommend?
I'd like to know what the routine was like, what the social life was like, what they spent their time thin... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/59b3zl/what_are_the_best_books_on_the_everyday_life_of/ | {
"a_id": [
"d97s0pe"
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"score": [
3
],
"text": [
"Well, there is Greenwood Press's *Daily Life in ________* series. These are of variable quality, at least the ones I've looked at. One of the strengths is the narrow scope of their focus. Like, there is a \"Daily Life during the Spanish Inquisiti... | [] | [] | [
[]
] | |
2ig2kw | What is the worst anachronism: To impose modern theory on the past, or to assume that we're able to understand history "as it was" | AskHistorians | self | {
"a_id": [
"cl28l7y"
],
"score": [
8
],
"text": [
"Rankes 'bloss zu zeigen wie es eigentlich gewesen' is the core for your (and a historians) 'as it was'. Now, calling that an anachronism is in the light of Ranke a bit weird. \n\nIn 'as it was' histories, we are trying to recreate a (not the) pic... | [] | [] | [
[]
] | ||
1v1oa1 | What actually causes you to throw up when you have the "stomach flu" ? | My SO didn't feel well last night and threw up this morning. I disinfect the entire house when this happens, because I absolutely hate throwing up. But if you think you may already have the bug, is there something you can do to prevent throwing up?
It seems like people only throw up when they eat. Should I just take... | askscience | http://www.reddit.com/r/askscience/comments/1v1oa1/what_actually_causes_you_to_throw_up_when_you/ | {
"a_id": [
"ceo0yzd"
],
"score": [
2
],
"text": [
"\"Stomach flu\" is a generic term for any number of illnesses--usually something like gastroenteritis--that are caused by an infection of the stomach and intestines. This causes inflammation all throughout the gastrointestinal tract, and makes i... | [] | [] | [
[]
] | |
17osad | What would have pre-colonial North American battles looked like? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/17osad/what_would_have_precolonial_north_american/ | {
"a_id": [
"c87pe1v",
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"score": [
27,
9
],
"text": [
"**The Early Colonial Example**\n\nLooking at some of the earliest clashes between Colonists and Natives can give some indication of how groups at the \"tribe/complex chiefdom\" level of organization and population would hav... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Tepoztopilli",
"http://0.tqn.com/d/create/1/0/R/6/B/-/aztec-warriors-Codex-Mend.jpg",
"http://en.wikipedia.org/wiki/Macuahuitl",
"http://en.wikipedia.org/wiki/Atlatl",
"http://books.google.com/books/about/Aztec_Warfare.html?id=7M1o9g8MARgC",
"http://www.milita... | ||
f7qac | Does holding up your cell phone really increase reception? | I see people holding up their cell phones in crowded places and always think it's ridiculous that people would think a few feet would increase reception.
Am I wrong? | askscience | http://www.reddit.com/r/askscience/comments/f7qac/does_holding_up_your_cell_phone_really_increase/ | {
"a_id": [
"c1dx653",
"c1dxcll"
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"score": [
2,
3
],
"text": [
"Yes, with conditions.\n\nJust this summer, i was in a hilly area away from the nearest town. I had to be outside on a hill to have any reception. If I was sitting on the ground, no reception. If I was standing, I got enough ... | [] | [] | [
[],
[]
] | |
1svgsy | why do we not have a universal chatting (im) service/client? or do we? | I started using the internet around the time when MSN was big in the US and Yahoo! everywhere else in the world. If I'm not mistaken, the two could not talk to each other. Even if they could, fast-forward to today.
Today we have--in no particular order--Google Hangouts (or Google Talk if we backtrack a bit), Windows L... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1svgsy/eli5_why_do_we_not_have_a_universal_chatting_im/ | {
"a_id": [
"ce1msrg",
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"score": [
3,
3,
2
],
"text": [
"Basically [this](_URL_0_). To expand, each messenging service does well enough on its own to allow for its continued existence. Furthermore, most of them have some feature that makes them better for c... | [] | [] | [
[
"http://xkcd.com/927/"
],
[],
[]
] | |
2qzdgx | can masturbating make your muscles bigger? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2qzdgx/eli5_can_masturbating_make_your_muscles_bigger/ | {
"a_id": [
"cnaze4g"
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"score": [
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"text": [
"To grow muscle you need to do few reps with high exertion. Masturbation is the opposite of this. You will improve muscular endurance in this way but that does not make your muscles bigger. That's why weightlifters are bulky and marathon runners a... | [] | [] | [
[]
] | ||
3qyzdr | How appropriate is to call "The American Civil War", a "Civil War", instead of something like "Southern States Revolt"? | Generally when considering Civil Wars it comes to me as indicative of a war by opposing sides with different positions for how the state conducts its affairs.
In the case of The American Civil War it seems that its focus was on whether the Southern States would or would not split from the Union.
Wouldn't it be more ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3qyzdr/how_appropriate_is_to_call_the_american_civil_war/ | {
"a_id": [
"cwjvccq"
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"score": [
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"text": [
" There's a lot of debate on 'what' the war was, which has carried on to today. And revisionism is a hotbed topic between the majority of America and regional nationalists like the *League of the South,* or the *Sons of Confederate Veterans.* (Let... | [] | [] | [
[
"http://www.merriam-webster.com/dictionary/civil%20war",
"http://www.nytimes.com/2006/11/26/world/middleeast/26war.html?pagewanted=print&_r=0",
"http://www.oxforddictionaries.com/us/definition/american_english/civil-war"
]
] | |
sm13a | Is there going to be a WW3? Why weren't there any major wars like WW1 and WW2 in the past 67 years? | What stopped from sparking a war like WW1 and WW2? Why is everything so nice now? Will there be a WW3?
Why? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/sm13a/is_there_going_to_be_a_ww3_why_werent_there_any/ | {
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"Because MAD pretty much makes this kind of thing impossible. \nAlso, define \"World\" war. \nI could, but probably won't argue that the 'Nam war was a \"Wor... | [] | [] | [
[],
[],
[],
[],
[]
] | |
p444c | What is happening when you drive on a highway and have only one window down? | When I do this there is a sensation in my ears and even the sound.
It obviously has to do with airflow, but what exactly is happening? | askscience | http://www.reddit.com/r/askscience/comments/p444c/what_is_happening_when_you_drive_on_a_highway_and/ | {
"a_id": [
"c3mcydz"
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"score": [
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"text": [
"Pretty much the same thing that happens when you blow across a jug. Essentially, the stream of air hits the open window / jug top. The leading edge of the stream of air creates a vortex, and spins off. There's a low density region that follows... | [] | [] | [
[
"http://www.youtube.com/watch?v=SJ3w4bg5Tx8"
]
] | |
2wotg9 | why do so many free wifi hotspots have a gateway page? | People advertise free wifi all the time - but 99% of the time, I need to use some sort of gateway to get to it. Why don't we just have open wifi hotspots at things like hotels? Isn't it much more convenient than constantly having to sign back in?
I understand that they don't want people to poach free internet - but fi... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2wotg9/eli5_why_do_so_many_free_wifi_hotspots_have_a/ | {
"a_id": [
"coss5ec"
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"score": [
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"text": [
"There are concerns that if you use a wifi connection and you commit computer crimes, libel or harassment the owner of the wifi connection could be held liable. The boilerplate text provides a mechanism for the wifi owner to disclaim liability fo... | [] | [] | [
[]
] | |
e1f99b | Did scientists at Los Alamos genuinely believe that atomic bombs could ignite the earth's atmosphere? | I'm currently writing a paper on the relative totality of warfare and came across a historian arguing that the most intense humanity has come in waging war was through the testing of the atomic bomb where they believed this could be the outcome. His footnote is a bit underwhelming though, a comment from a friend 'Aaron... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/e1f99b/did_scientists_at_los_alamos_genuinely_believe/ | {
"a_id": [
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"score": [
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4
],
"text": [
"No. Their general opinion was that the atomic bombs couldn't \"ignite\" the atmosphere (the suggestion was that the bomb might be able to trigger a fusion reaction). The only dissenting opinion was Arthur Compton, who was no... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/c1jei5/is_it_true_fdr_authorized_a_test_during_ww2_that/"
],
[
"http://blog.nuclearsecrecy.com/2018/06/29/cleansing-thermonuclear-fire/"
]
] | |
35iifk | why bodybuilding competitions are not considered eating disorders? | I've been watching my roommate this year prep.
I'm all for eating healthy and working out and having goals. Being dedicated is great.
But I'm having trouble understanding when people are prepping right before competition and only eat very little carbs or drink very little water to look lean, this is not considered an... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/35iifk/eli5_why_bodybuilding_competitions_are_not/ | {
"a_id": [
"cr4p89w",
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"score": [
2,
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"text": [
"One of the defining characteristics of any mental illness is that it negatively impacts the life of the sufferer. \n\nIf your friend feels compelled to live in this style, against his wishes, then it may be a disorder. If it... | [] | [] | [
[],
[]
] | |
aqe5rx | Friedrich Engels owned multiple factories. Did he manage them based on communist principles? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/aqe5rx/friedrich_engels_owned_multiple_factories_did_he/ | {
"a_id": [
"egg2xc7"
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"score": [
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"text": [
"The simple answer to this is \"No, he did not\". Now, this is not because Engels was a hypocrite,but rather because of the following two reasons:\n\na) Friedrich Engels never actually owned any factories.\n\nThere were plenty of factories within... | [] | [] | [
[]
] | ||
3djjr1 | how come some peppers "burn" your skin if you touch them, but your mouth doesn't get burned if you eat them? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3djjr1/eli5how_come_some_peppers_burn_your_skin_if_you/ | {
"a_id": [
"ct5r88w"
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"score": [
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"text": [
"So it depends on the pepper, but it's not a burn like a fire would cause.\n\nWhen it comes to spicy peppers, the reason you get the spicy sensation in your mouth is because of a chemical called Capsaicin. This chemical opens up the calcium chann... | [] | [] | [
[]
] | ||
26o0qp | how can thailand go through a military coup when the same king is still in power, and has been for so many years? | How is Thailand experiencing a military coup when the point of a coup is to seize control? Is the king of Thailand for or against this coup since the point of a coup is to destroy the party in charge the king has been through various coups since his assent to the thrown but remains in power, correct? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/26o0qp/eli5_how_can_thailand_go_through_a_military_coup/ | {
"a_id": [
"chsudi7"
],
"score": [
2
],
"text": [
"The King of Thailand doesn't have any real power. Thailand is a constitutional monarchy, just like England. "
]
} | [] | [] | [
[]
] | |
2wnqly | why does water taste worse when our throat is sore? | Seriously, I can't drink water when I have a sore throat, I don't even want to. I prefer to drink something else as my waft isn't so good and the water makes this sensation a lot worse. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2wnqly/eli5_why_does_water_taste_worse_when_our_throat/ | {
"a_id": [
"costf3t"
],
"score": [
2
],
"text": [
"Not a doctor but I get the same thing, and I would say it's because the throat is infected and you're getting teh bacteria into your mouth and on your tongue."
]
} | [] | [] | [
[]
] | |
29goe1 | why does football go by scores of 7 instead of 1 ' s like hockey and soccer? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/29goe1/eli5_why_does_football_go_by_scores_of_7_instead/ | {
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"cikqgg7",
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3,
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"text": [
"It doesn't \"go by scores of 7.\" There are different ways to score points, and each type of score is worth a certain amount of points. Some are only possible in certain situations. A common misconcepti... | [] | [] | [
[],
[],
[]
] | ||
8b23ba | why are some viruses shaped like an icosahedron? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8b23ba/eli5_why_are_some_viruses_shaped_like_an/ | {
"a_id": [
"dx3c9zp"
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"text": [
"Most likely because it's a compact shape that can be built easily (make a triangle of protein 8 times, join them together).\n\nViruses hijack the cells of other creatures (or bacteria) to reproduce, so they need to keep things super simple."
]
... | [] | [] | [
[]
] | ||
16j649 | why is gasoline sold per 9/10 gallon? | This has confused me since I was old enough to notice. We can pretend that that age was 5, so someone please explain to the child in me. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/16j649/why_is_gasoline_sold_per_910_gallon/ | {
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"score": [
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"text": [
"Marketing. It makes the price sound a cent cheaper than it actually is.",
"It's actually 9/10 cent. So you see prices like 3.39^9/10 what that means is \"3 dollars, 39 and nine tenths cents.\" It's... | [] | [] | [
[],
[],
[]
] | |
bcbrpx | How CRT TV controls the beams so quickly back in the old days? | Unlike LED where each pixel has a light source, a CRT relies on just 1 set of cathode ray tube (for color tvs that has 3 color beams). I understand the control of the beam directions done by a set of magnetic coils, however even for very old B & W TV's, it would still require not just precision but super human speed to... | askscience | https://www.reddit.com/r/askscience/comments/bcbrpx/how_crt_tv_controls_the_beams_so_quickly_back_in/ | {
"a_id": [
"ekpnqc0",
"ekq11jw"
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"score": [
16,
2
],
"text": [
"Well superhuman speed maybe but when it comes to electronics it is a fairly low speed thing.\n\nRealize that the vertical refresh happens only 50/60 times per second - that's glacial speed, even for the 1930s electronics w... | [] | [] | [
[],
[]
] | |
2anu63 | Is there any plausible evidence for occurrences of single combat by "champions" or highly esteemed soldiers in the field of combat? | There are numerous mythic and literary references to the idea of two champions of their respective forces duelling to the death in single combat, but did this ever occur in reality? The notion obviously seems fanciful, but not completely out of the realm of possibility.
I know that sometimes military commanders would ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2anu63/is_there_any_plausible_evidence_for_occurrences/ | {
"a_id": [
"cix7ab0"
],
"score": [
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"text": [
"Single combat is mentioned quite frequently in the history of Ancient Rome – the Horatii's defeat of the Alba Longan Curiatii in the 7th century BC is reported by Livy to have settled a war in Rome's favor and subjected Alba Longa to Rome; Marcu... | [] | [] | [
[]
] | |
16xf92 | what's all the fuss about megaupload? do that many people really need file storage? | With massive hard drives on home computers is there really that much of a need for offline storage? Is there something else it's used for? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/16xf92/eli5_whats_all_the_fuss_about_megaupload_do_that/ | {
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"score": [
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"text": [
"Online storage is generally seen as the way... | [] | [] | [
[],
[],
[],
[],
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[],
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] | |
31tiks | Does motion/speed influence sound waves? | To further explain my question: if a silent object was moving at X speed and at X distance emitted a sound, would the sound differ any from something not in motion from the same distance?
If so, how does the direction of the object factor into the sound perceived? | askscience | http://www.reddit.com/r/askscience/comments/31tiks/does_motionspeed_influence_sound_waves/ | {
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"text": [
"Absolutely. It's called the [Doppler effet](_URL_0_). A source moving towards the observer will sound higher pitched, and a source moving away from the observer will sound lower.\n\nThe same effect happens with light, too... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Doppler_effect"
],
[]
] | |
4b4t1n | since all digital memory has to be stored as physical hard copies, will we ever have an information technology crisis? | This is an age of crisis, where we are running out of fossil fuels, influencing climate, warfare, hunger etc. that we humans have to deal with. So the question arises as to how the Internet and digital memory (what we take for granted in this day), might one day become harder to achieve or keep up with.
I am not very ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4b4t1n/eli5_since_all_digital_memory_has_to_be_stored_as/ | {
"a_id": [
"d161m6j",
"d161nj4"
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"score": [
5,
2
],
"text": [
"We're going to have a lot of other problems before we run out of computer storage. Silicon is one of the most commonly occurring elements on Earth, and it doesn't take all that much to create a flash drive or solid state dri... | [] | [] | [
[],
[]
] | |
el7qqx | how do machines calculate body fat percentage? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/el7qqx/eli5_how_do_machines_calculate_body_fat_percentage/ | {
"a_id": [
"fdg4cfy",
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"score": [
3,
2,
2
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"text": [
"Usually scale use two electrod under your feet and use Tiny Ac current. By measuring the impedance and frequency responce of the human body they can deduce the ammount of fat and water.",
"The accur... | [] | [] | [
[],
[],
[]
] | ||
11dqtk | Can a fruit without seeds be genetically modified? | My friend refuses to eat navel oranges because she says they are gmo. I explained to her the whole story of how the orange is a natural mutation. Then started to think about it can a seedless fruit be gmo? Are the navel oranges I buy at the store gmo? | askscience | http://www.reddit.com/r/askscience/comments/11dqtk/can_a_fruit_without_seeds_be_genetically_modified/ | {
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"c6llbz8",
"c6lrnot",
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"score": [
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2,
2
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"text": [
"Most likely, no. Most fruits and vegetables are the result of simple breeding (that we've been using for millenia) experiments to develop produce with the most desirable qualities. If that's your frie... | [] | [] | [
[],
[],
[]
] | |
cda74g | How did Houston communicate with the astronauts on the moon? | askscience | https://www.reddit.com/r/askscience/comments/cda74g/how_did_houston_communicate_with_the_astronauts/ | {
"a_id": [
"ettnz24"
],
"score": [
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"text": [
"[USB](_URL_0_). But not the adapter type. Radio waves - the general method of communication in space for basically everything (laser links are a very recent development).\n\nBy changing the amplitude or (better) the frequency of the radio waves y... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Unified_S-band"
]
] | ||
7ohc36 | If male lyrebirds are so good at mimicking the sounds of other objects and animals , how do female lyrebirds know what is a bird and what is the real deal? | The mimicking of lyrebirds are incredible. I've seen the videos of them mimicking other birds, people, and inanimate objects. I know that their song is a part of their courtship ritual. But how do the female birds know that it is another lyrebird if the mimic ability is so amazing? Is it only so indistinguishable for u... | askscience | https://www.reddit.com/r/askscience/comments/7ohc36/if_male_lyrebirds_are_so_good_at_mimicking_the/ | {
"a_id": [
"dsaw964"
],
"score": [
4
],
"text": [
"Having seen many lyrebirds to the south of Sydney, it seemed to me that they're curious about any loud noise. I'm going to guess the the calls attract the female's attention, but it's the courtship displays which count the most."
]
} | [] | [] | [
[]
] | |
4nmlvl | Is the graphical fidelity of games limited by computational power available currently or is it very difficult to make a realistic looking game? | If the resources were available to run it, could a game that looks like real life be made? | askscience | https://www.reddit.com/r/askscience/comments/4nmlvl/is_the_graphical_fidelity_of_games_limited_by/ | {
"a_id": [
"d458t82",
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"score": [
16,
3,
3
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"text": [
"It's both. You need a lot of data to represent all the realistic details, and that means either scanning them from real life objects (limited by scanner quality, issues with lighting, animation etc.), ... | [] | [] | [
[],
[],
[]
] | |
t63vz | Who really built the Kaaba in Mecca | I always wondered who really built the Kaaba and why that specific artifact is so sacred to Islam? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/t63vz/who_really_built_the_kaaba_in_mecca/ | {
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6,
4,
2,
20
],
"text": [
"I am not an expert in pre-Islamic Arabia, but I do have some knowledge of the area; as I recall, the Kaa'ba was already a sacred artifact in the Arabian pen... | [] | [] | [
[],
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Abd_Allah_ibn_al-Zubayr",
"http://whi-a.wikispaces.com/file/view/kaaba.jpg/101457901/kaaba.jpg",
"http://archnet.org/library/sites/one-site.jsp?site_id=8803",
"http://www.amazon.co.uk/Arabia-Arabs-Bronze-Peoples-Ancient/dp/0415195357",
"htt... | |
6rqrkz | when you mix the same quantity of cold and hot water in a bucket, is the result the average of the two temperatures? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6rqrkz/eli5_when_you_mix_the_same_quantity_of_cold_and/ | {
"a_id": [
"dl71v6m"
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"score": [
3
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"text": [
"In a perfectly closed system with no loss of temperature to the air or buckets, yes. A 50 degree bucket and a 100 degree bucket will make a 75 degree double bucket. \n\nIn reality it will be slightly less than 75 as some heat is lost to the bucke... | [] | [] | [
[]
] | ||
2flkgl | what is the point of having the marine corps and the army separated? | I understand the separation of navy and airforce, but why are both infantry based marines and army seperated? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2flkgl/eli5_what_is_the_point_of_having_the_marine_corps/ | {
"a_id": [
"ckae9o7"
],
"score": [
16
],
"text": [
"The missions of the Marine Corps and the Army are entirely different, those differences came out of design and necessity. The Marines are a department of the navy, operating as their own entity and are constantly defending why they exist.\n\nThe... | [] | [] | [
[]
] | |
1vqcuo | why does it seem like the large majority of movies from the 80s were set in either chicago or illinois in general? | Bit of an odd question. It's just that it seems like every other 80s movie that I watch just happens to be set in Chicago. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1vqcuo/why_does_it_seem_like_the_large_majority_of/ | {
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"score": [
9,
6,
2,
2,
3,
2
],
"text": [
"John Hughes was arguably the 80s movie king, and he filmed most of his stuff in and around Chicago.",
"Often it has to do with licen... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | |
1rmalf | How much value has been placed on humor by societies of the past? Has being funny always been considered such a positive trait as it is today? | I've been noticing lately what a huge portion of the conversations I have on a daily basis involve humor or jokes of some kind at some point. In fact it seems being able to make a witty little quip is the #1 most important asset to social success among your peers.
I feel this probably hasn't always been true though, e... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1rmalf/how_much_value_has_been_placed_on_humor_by/ | {
"a_id": [
"cdotz81",
"cdouhe9",
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"cdp00io",
"cdp5j6n"
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"score": [
75,
31,
7,
6,
3,
9,
13
],
"text": [
"Rhetoric scholar here. Cicero and Quintillian wrote extensively about the persuasive use of humor, and at least... | [] | [] | [
[
"http://www.theguardian.com/culture/charlottehigginsblog/2009/apr/03/classics"
],
[],
[],
[],
[
"http://uk.reuters.com/article/2008/07/31/uk-britain-joke-life-idUKL129052420080731",
"http://www.theguardian.com/books/2009/mar/13/roman-joke-book-beard"
],
[],
[
"http://en.wikipedia.o... | |
70jv3o | what keeps people who work at kfc/coca-cola from stealing a sample of their secret recipes, reverse engineering them, and then selling them? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/70jv3o/eli5_what_keeps_people_who_work_at_kfccocacola/ | {
"a_id": [
"dn3o93o"
],
"score": [
13
],
"text": [
"Not a huge amount, really. We already pretty much know what's in these products (I mean, with Coke, you can basically just read the label). The difficulty is only getting the exact formulation and mixing right. For most people, the prohibitive p... | [] | [] | [
[]
] | ||
1fe0hq | Nomadic animals | I happened to notice on the Wiki entry for black swans that these birds are truly nomadic, wandering across Australia according to the weather and feeding opportunities. Many animals are migratory - many, many birds, caribou, etc. - but I can't think of many that are truly nomadic. One other suggestion might be polar... | askscience | http://www.reddit.com/r/askscience/comments/1fe0hq/nomadic_animals/ | {
"a_id": [
"ca9di8t"
],
"score": [
5
],
"text": [
"Migratory describes species which regularly return to the same spot at a particular point in time. Examples (as you noted) are most frequently birds, but also many marine mammals (humpback whales for example) and sea turtles. These species usuall... | [] | [] | [
[]
] | |
2pj5b1 | how do manufacturers get the little "pop/freshness seal bubble" on the tops of jars to stay down? | And why can't I do it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2pj5b1/eli5_how_do_manufacturers_get_the_little/ | {
"a_id": [
"cmx5u03"
],
"score": [
4
],
"text": [
"You can. /r/canning\n\nYou boil what is inside so the steam pushes out all the atmospheric gasses. Then when the can cools the water vapor condenses (mostly) back to water and leaves a vacuum."
]
} | [] | [] | [
[]
] | |
3z6tt5 | I am a typical peasant farmer in western Europe in the 16th century. Where do I get my drinking water from and how safe is it? | I read that beer consumption was high because of unsafe drinking water. Was that an issue restricted to urban areas? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3z6tt5/i_am_a_typical_peasant_farmer_in_western_europe/ | {
"a_id": [
"cyjojd6",
"cyk7hm9"
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"score": [
3,
2
],
"text": [
"There's always room for discussion, but perhaps the sections [Drinking Water](_URL_1_) and [Beer](_URL_0_) from our FAQ will answer your inquiry.",
"One thing to keep in mind is that Cholera, one of the more severe patho... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/wiki/health#wiki_beer",
"https://www.reddit.com/r/AskHistorians/wiki/health#wiki_drinking_water"
],
[
"http://www.who.int/mediacentre/factsheets/fs107/en/"
]
] | |
6d0bpl | how do teeth know how to grow in the pattern so they fit together when you bite down? | How to teeth grow a certain way to fit to themselves? As in upper and lower teeth? And also, What causes teeth to grow crooked and not fit together? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6d0bpl/eli5_how_do_teeth_know_how_to_grow_in_the_pattern/ | {
"a_id": [
"dhyxct5"
],
"score": [
2
],
"text": [
"They don't \"know\". Your body starts out with some stem cells. These are basically cells without an assigned function. They don't know where to go and what to do yet. They just divide. When your cells divide functions do get assigned to the new ... | [] | [] | [
[]
] | |
3d9a4t | How did US gov't mints turn mined ore into coins? | One of the guests on the BBC's In Our Time episode on the California Gold Rush claimed that the gold coming out of California mines increased the supply of gold coins in the United State twenty times. Further, he claimed that there was a mint in San Francisco by 1860. These mines were private claims, so how did the gol... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3d9a4t/how_did_us_govt_mints_turn_mined_ore_into_coins/ | {
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"This also involves the Carson City federal mint in Nevada (drawing on the famed Comstock Lode), established in 1869. These mints purchased bullion, either directly from major mines or from banks, which purchased bullion from the market (including... | [] | [] | [
[]
] | |
de4x3u | why doesn’t isopropyl alcohol damage electronics? are there other liquids that also don’t do damage to electrical components? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/de4x3u/eli5_why_doesnt_isopropyl_alcohol_damage/ | {
"a_id": [
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"text": [
"it's neither corrosive nor conductive, so it doesn't dissolve or short anything. it also evaporates at low temperatures, so cleanup is a nonissue\n\ncandle wa... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
4vldsz | When is a rock's birthday? At what point in it's formation does a rock become a rock? | askscience | https://www.reddit.com/r/askscience/comments/4vldsz/when_is_a_rocks_birthday_at_what_point_in_its/ | {
"a_id": [
"d5zlhj8"
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"text": [
"That's a fun question.\n\nLet me distinguish between 2 things: the date when some geological material becomes a rock vs the date when a rock becomes \"the specific rock it is\".\n\nThe answer plays into the general classification of rocks classe... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Fractional_crystallization_(geology)",
"http://eps.mcgill.ca/~courses/c452/CHOC_Week%2012a_2010.pdf",
"http://serc.carleton.edu/research_education/equilibria/PTtPaths.html"
]
] | ||
2vsmva | Around 1975, almost every major progressive rock band "sold out" and started producing more radio friendly material. Why did this happen? | Notable groups like Genesis, Rush, and Camel demonstrate this trend. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2vsmva/around_1975_almost_every_major_progressive_rock/ | {
"a_id": [
"cokl66w"
],
"score": [
11
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"text": [
"Your question is unanswerable because its central premise is flawed. \n\nWith Genesis, the change is easily explained - Peter Gabriel left as bandleader, Phil Collins took over. Phil Collins has a different style and sensibility, so naturally th... | [] | [] | [
[]
] | |
3egveu | There were ancient Pacific Islanders- were there Atlantic Islanders? What happened to them? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3egveu/there_were_ancient_pacific_islanders_were_there/ | {
"a_id": [
"ctexvwr"
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"score": [
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"text": [
"In the north, the Irish and then the Norse settled the Faeroes before the Norse jumped off to Iceland, Greenland, and (briefly) the coast of North America. \n\nIn the south, the Canary Islands were inhabited by the Guanches, who were present on ... | [] | [] | [
[]
] | ||
1mx316 | how does fingerprint authentication store the fingerprint information? | I know how regular password authentication works: the password, "hunter2", is stored as a hash, 2ab96390c7dbe3439de74d0c9b0b1767, then you re-hash and compare when the password is entered.
But fingerprints have way more information and also you may be working from a subset of that information, as if you had "unter2" ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1mx316/eli5_how_does_fingerprint_authentication_store/ | {
"a_id": [
"ccdfyy0"
],
"score": [
3
],
"text": [
"Fingerprint scanners are basically capacitive touchscreens minus the screen part. Fingerprints are made of ridges and valleys. When you press your finger against a scanner, it registers what parts of your finger are ridges and what parts are va... | [] | [] | [
[]
] | |
hy27z | How can I understand the motion of gyroscopes intuitively? | I haven't been able to find an explanation that gets me past the fact that because it's not over its center of gravity it must fall. To me it shouldn't matter that you have for instance a spinning disk anchored inside a black box; the box should still behave like a solid box of the same weight. I understand the mathe... | askscience | http://www.reddit.com/r/askscience/comments/hy27z/how_can_i_understand_the_motion_of_gyroscopes/ | {
"a_id": [
"c1zborh",
"c1zcrap"
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"score": [
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3
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"text": [
"A gyroscope doesn't resist movement, it resists moment. So if you had a box with a gyroscope in it on a table, you could push it forwards/backwards/left/right with ease, but it would be difficult to spin it.\n\nTo see why t... | [] | [] | [
[],
[
"http://video.google.com/videoplay?docid=4242610371139275474#"
]
] | |
80g0e2 | What's the deal with the Celts and the Norse? | This is poorly written, apologies.
What's the historical relationship between these people? Not just Celts and Norse but the people of Britain and Ireland and the people of Scandinavia.
Was the art at Newgrange influential to Nords?
Are Nordic standing stones derivative of Stonehenge?
The Celtic knot is the most obv... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/80g0e2/whats_the_deal_with_the_celts_and_the_norse/ | {
"a_id": [
"duvhx9q",
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"score": [
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],
"text": [
"One of the most thoughtful recent scholars on this subject was the late Bo Almqvist (1931-2013) - a Swedish folklorist who was the director of the Irish Department of Folklore at University College, Dublin. His \"Viking Ale... | [] | [] | [
[
"http://www.exeterpress.co.uk/en/Book/1068/The-Folklore-of-Cornwall.html"
],
[]
] | |
u5bzn | What is the total population of all life on our planet? | I know this would be difficult to calculate because we don't have the population numbers of every single organism on this planet. I specifically am asking for life as in the Animalia kingdom. So, what is the best estimate of the population of life on earth? | askscience | http://www.reddit.com/r/askscience/comments/u5bzn/what_is_the_total_population_of_all_life_on_our/ | {
"a_id": [
"c4sfzvf",
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"score": [
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4
],
"text": [
"Do you count bacterias? The rest of the animals are just a rounding error for the bacteria population.\n",
"I'm not sure about animals, but if you're interested in all life, prokaryotes outnumber everything else at abo... | [] | [] | [
[],
[
"http://www.pnas.org/content/95/12/6578.full.pdf",
"http://en.wikipedia.org/wiki/Biomass_(ecology\\)"
]
] | |
2tt8jz | would 2 equally loud noises combine to make a louder sound? why or why not? | Like if i dropped 2 of the same object and they hit the ground at the exact same time...would it be louder than dropping one object? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2tt8jz/eli5_would_2_equally_loud_noises_combine_to_make/ | {
"a_id": [
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"text": [
"Depends on where you're standing. Sound waves can add or cancel as they mix together.\n\n(That's the science behind noise canceling headphones, which actually create a sound that is opposite in phase to the noise it's cancel... | [] | [] | [
[],
[
"https://community.emc.com/servlet/JiveServlet/showImage/38-3215-27965/interference_water_waves.jpg"
]
] | |
42xfsi | Have there ever been mafias/organized crime syndicates in the United States that were German, French, or Scandinavian? | More broadly, I'm wondering if there's a specific reason that certain ethnic groups (Italian, Russian, and Irish) are associated with organized crime syndicates more often than others? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/42xfsi/have_there_ever_been_mafiasorganized_crime/ | {
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"score": [
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507,
25,
21,
149,
11
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"text": [
"There has been one case of plagiarism, several jokes, and a number of contentless posts offered up as \"answers\" to the OP's q... | [] | [] | [
[],
[
"Foundsf.org"
],
[
"https://en.wikipedia.org/wiki/Hymie_Weiss"
],
[],
[],
[]
] | |
3qow2p | since essentially everything nowadays causes cancer, should we just assume that we still don't really know what causes it? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3qow2p/eli5_since_essentially_everything_nowadays_causes/ | {
"a_id": [
"cwh1eu9",
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"cwhblf3",
"cwhcvpv",
"cwhd3e9",
"cwhejkw",
"cwhg21g",
"cwhhea3",
"c... | [] | [] | [
[],
[],
[],
[],
[
"http://cisncancer.org/cancer101/what_is_cancer.html"
],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[
"https://youtu.be/2gI0QqqkfHs?t=2m41s",
"https://en.wikipedia.org/wiki/Ames_test",
"http://consumer.healthday.com/cancer-information-5/mis-cancer-news-... | ||
a18tq2 | why are tickets (to concerts, sports events, etc) purchased through third parties (stubhub, ticketmaster, etc) as opposed to directly from the venue hosting the event? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/a18tq2/eli5_why_are_tickets_to_concerts_sports_events/ | {
"a_id": [
"eanz7uk"
],
"score": [
2
],
"text": [
"Back in the day you had to buy directly from the venue. You had to get in line and buy paper tickets often having to campout overnight for best seats or for high demand shows. Buying from a ticket seller is much easier for everyone. "
]
} | [] | [] | [
[]
] | ||
4nw02z | us federal income taxes | I realize tax law is vastly complicated. I have heard that there are seven tax brackets, but all of your income is not taxed at the same rate? Or if you get a raise you are taxed more?
Can someone explain the general mechanics behind income taxes? How much of your income is taxed and how is this decided? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4nw02z/eli5_us_federal_income_taxes/ | {
"a_id": [
"d47dh4d"
],
"score": [
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],
"text": [
"It is complicated, but the part that throws most people is the progressive tax rate. Think about it that instead of you specifically being taxed at one tax rate, each individual dollar you make is taxed at a changing rate. Let's say the first 10,... | [] | [] | [
[]
] | |
gupi1 | How do surgeons sew arteries together? | Or tendons, nerves, and the like? [This video prompted my question.](_URL_0_) | askscience | http://www.reddit.com/r/askscience/comments/gupi1/how_do_surgeons_sew_arteries_together/ | {
"a_id": [
"c1qicew",
"c1qifve"
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"score": [
3,
3
],
"text": [
"I'm really hoping someone will answer your question.\n\nAnd if you'll allow me to make a related comment: Does anyone know of a freely available source the general public can learn about surgical procedures *in detail*? I ... | [] | [
"http://www.reddit.com/r/videos/comments/gu9ev/hand_transplant_science_fuck_yeah/"
] | [
[],
[]
] | |
1sfqd3 | the negative effects of the industrial revolution | (I'm not sure if this is the right subreddit, feel free to redirect me) | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1sfqd3/eli5_the_negative_effects_of_the_industrial/ | {
"a_id": [
"cdx55fx",
"cdx5c5b",
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"score": [
2,
2,
2
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"text": [
"Immediate or long term?\n\nThe immediate negative effects was the lowering of living standards (today we have higher living standards because of it). Working hours increased, deaths due to injury incre... | [] | [] | [
[],
[],
[]
] | |
34m8up | why are motorcycle helmets so heavy when the human neck is comparatively fragile? | Whenever I've worn a motorcycle helmet, I've often been surprised at how heavy it was compared to my neck which keeps it up. I've imagined that if the helmet spun around, the weight of it would snap my neck. Why aren't they made just as durable but lightweight? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/34m8up/eli5_why_are_motorcycle_helmets_so_heavy_when_the/ | {
"a_id": [
"cqvzblq",
"cqvzcyb"
],
"score": [
3,
2
],
"text": [
"Now think about what happens in a car wreck. The body is fastened to the car via seat belt so in an accident, the neck is the moving part which gives you whiplash. In a motorcycle accident , your entire body is in motion as ... | [] | [] | [
[],
[]
] | |
4w395y | how did bugs such as bees and ants come to have "queens"? how did physiologically different creature originate but remain the same species? why is there no "queen" human? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4w395y/eli5_how_did_bugs_such_as_bees_and_ants_come_to/ | {
"a_id": [
"d63mh0t",
"d63n1ib",
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"d63pvnp",
"d63qjj0",
"d63r5uj"
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"score": [
64,
26,
5,
2,
4,
3
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"text": [
"Efficiency!\n\nA small number of specialized *breeding caste* is enough to supply eggs for the whole hive. Keep in mind the queen is n... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | ||
8a588c | what makes deer/moose antlers symmetrical? | Straightforward question, since they’re like bones I was wondering why they don’t grow asymetrical. Also, they’re probably not exactly symmetrical but at first glace they are, and that is what I mean. Thank you | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8a588c/eli5_what_makes_deermoose_antlers_symmetrical/ | {
"a_id": [
"dww5dbe"
],
"score": [
3
],
"text": [
"A symmetrical set of antlers are called typical, as opposed to a set of non typical which are not symmetrical. Antlers are \"shed\" and regrow every single year, a mature rocky mountain elk can grow 1 1/2\" in mass a day during the peak. What ... | [] | [] | [
[]
] | |
3jztiq | How do technological changes affect musical styles? | I hope this question is answerable and not too vague or too much of a "throughout history" question. I was listening to a program on BBC 6 Music the other day about early music using samples. The invention of the sampler made sampling a lot easier, but there are examples predating the sampler.
That got me thinking abo... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3jztiq/how_do_technological_changes_affect_musical_styles/ | {
"a_id": [
"cutumm2",
"cuu4hg8"
],
"score": [
3,
2
],
"text": [
"You're asking kind of a lot of questions here. Typically classical music developed and changed with technology. \n\nTake Baroque instruments, for example. You have [Baroque Horns](_URL_0_) with no valves, so they can only pl... | [] | [] | [
[
"http://www.aswltd.com/egghorn.jpg",
"http://www.wmich.edu/mus-gened/mus170/170notes/170prepweek5W_files/image002.png",
"https://www.youtube.com/watch?v=NSYEOLwVfU8",
"http://www.britannica.com/art/celesta"
],
[
"https://www.youtube.com/watch?v=A2WdjyKQ57A",
"https://www.youtube.com/wa... | |
3amojp | why is the prices of games going up in canada even though the dollar has remained the same for about a year. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3amojp/eli5why_is_the_prices_of_games_going_up_in_canada/ | {
"a_id": [
"cse15pj"
],
"score": [
2
],
"text": [
"There is an ever increasing competition between game makers, and the cost of development is increasing."
]
} | [] | [] | [
[]
] | ||
4wp1qe | if i try to hit a small insect, e.g. a fruit fly, with my hand at high speed, will i hit it or will the air which my hand pushes in front of it will save the insect? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4wp1qe/eli5_if_i_try_to_hit_a_small_insect_eg_a_fruit/ | {
"a_id": [
"d68sflo"
],
"score": [
6
],
"text": [
"The air in front of it will actually be hitting it itself if you swing hard enough. Of course this is way faster than your hand can really go on its own. So it depends on what you mean by 'high speed'.\n\nThat's why the space shuttle coming down ... | [] | [] | [
[]
] | ||
4927xa | in a microwave, can i heat my food on half the heat for twice the time? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4927xa/eli5_in_a_microwave_can_i_heat_my_food_on_half/ | {
"a_id": [
"d0og8bb"
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"score": [
2
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"text": [
"Pretty much that is what you can do. You can also in a sense turn it into a slow cooker if you set the power low enough. I do not know if your power level goes low enough, or why you want to do this at all.\n\nI use mine to prepare fine chicken s... | [] | [] | [
[]
] | ||
1kq15k | how do throttleable rocket engines work? | How are liquid fueled rocket engines able to produce variable thrust? Why can they only do this within a certain range? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1kq15k/eli5_how_do_throttleable_rocket_engines_work/ | {
"a_id": [
"cbrgi8d"
],
"score": [
3
],
"text": [
"Simply put you alter the fuel flow using pumps on the fuel line. More fuel means more thrust being generated in the combustion chamber.\n\nDue to the inability of the pumps to work arbitrarily fast and the inability of the combustion chamber to h... | [] | [] | [
[]
] | |
5m76k4 | why does shaking (like in a train or bus) and rocking a baby's crib help us sleep? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5m76k4/eli5_why_does_shaking_like_in_a_train_or_bus_and/ | {
"a_id": [
"dc1cygs"
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"score": [
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"text": [
"I am going to take a dig at this. I think the exact word you are looking for is \"Rocking to sleep\".\n\nAs to why Rocking helps us sleep, it is a matter of brain waves.\n\nFirstly, we have been put to sleep a hundred times since our birth by gen... | [] | [] | [
[
"http://www.cell.com/current-biology/fulltext/S0960-9822(11)00539-2"
]
] | ||
l5y7v | why couldn't you lose weight by just not eating until you were thin? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/l5y7v/eli5_why_couldnt_you_lose_weight_by_just_not/ | {
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2,
22
],
"text": [
"Your body can't produce all of the various things it needs to function properly on it's own. That's why we eat: it provides us with energy, as well as vitamins, proteins, etc, th... | [] | [] | [
[],
[],
[],
[]
] | ||
5hhnah | How much farmland was needed to sustain classical/ancient cities? | I'm mainly thinking of Mediterranean and English isles cities, but any example are incredibly welcome.
I'm doing some worldbuilding and in creating temperate island cultures, I realised I didn't know how much land would be needed to sustain population centers and if their was some ratio (environmentally and geographi... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5hhnah/how_much_farmland_was_needed_to_sustain/ | {
"a_id": [
"db0azxu"
],
"score": [
6
],
"text": [
"Quite a lot. Indeed, most large cities in the Mediterranean world got that way because they were able to exceed the production limitations of their surrounding hinterland by importing food. Few cities, even in the most productive regions, could s... | [] | [] | [
[]
] | |
1e83i9 | Why did the Germanic invasions of Britain result in conqueror's language becoming the spoken tongue compared to the rest of the Germanic conquests in Europe? | Was it sheer numbers? Were Franks, Lombards, Visigoths, Burgundians, etc. just too few compared to the conquered lands to convert them linguistically? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1e83i9/why_did_the_germanic_invasions_of_britain_result/ | {
"a_id": [
"c9yhqf0"
],
"score": [
2
],
"text": [
"The traditional narrative is that it was just that, a large scale population exchange with the Romano-British being killed, dying of plague and being driven West by the Anglo-Saxons, later becoming the Welsh and Cornish. The remaining small popul... | [] | [] | [
[]
] | |
qss2j | If milk chocolate has milk in it, how does chocolate have such a long shelf life? | askscience | http://www.reddit.com/r/askscience/comments/qss2j/if_milk_chocolate_has_milk_in_it_how_does/ | {
"a_id": [
"c405ugh"
],
"score": [
23
],
"text": [
"Chocolate has almost no water in it. [There is a minimum water activity that is necessary for microbial growth](_URL_0_). Chocolate is below that, so microbes can't get in there and spoil it. Even when making things like truffles with liquid ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Water_activity"
]
] | ||
9qk271 | why is airplane fuel measured by weight instead of volume? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9qk271/eli5_why_is_airplane_fuel_measured_by_weight/ | {
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4,
2,
8,
7
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"text": [
"Many aircraft are limited by their “maximum gross weight” for takeoff and/ or landing. It makes the math easier when you don’t need to multiply the gallons b... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
3jwah1 | why are some photographs considered art? | Some photographs by certain people are worth a lot of money but others of almost the exact same thing are worth anything at all. Why is there a difference? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3jwah1/eli5_why_are_some_photographs_considered_art/ | {
"a_id": [
"custnmg"
],
"score": [
5
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"text": [
"From google:\n\nart\n\nnoun: art; plural noun: arts; plural noun: the arts\n\n1. the expression or application of human creative skill **and imagination**, typically in a visual form such as painting or sculpture, producing works to be appreciate... | [] | [] | [
[]
] | |
fhft8e | Why did England and France develop a strong centralized government while the Holy Roman Empire stayed decentralized and fragmented? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/fhft8e/why_did_england_and_france_develop_a_strong/ | {
"a_id": [
"fkc0e8q",
"fkc3goc",
"fkcgl0r"
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"score": [
369,
61,
11
],
"text": [
"#**Summary**\n\nPossible reasons for a decentralized and fragmented HRE\n\n1. Structural causes\n - Elective monarchy and papal coronation\n - No single \"capital city\"\n - Harder taxation and recr... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/7nfder/why_was_the_peace_of_augsburg_and_the_principle/",
"https://www.reddit.com/r/AskHistorians/comments/awfa78/how_much_did_dynastic_politics_serve_to/"
],
[],
[]
] | ||
e5nvy0 | Do stars normally complete a full rotation around a galaxy? | Is star life long enough to do so?
If it depends upon the size of galaxy, please consider milkyway. | askscience | https://www.reddit.com/r/askscience/comments/e5nvy0/do_stars_normally_complete_a_full_rotation_around/ | {
"a_id": [
"f9m43r4",
"f9mb7io"
],
"score": [
7,
4
],
"text": [
"Our sun, roughly middle, takes ~225-250 million years to make a full trip around. (this is called a cosmic or galactic year).\n\nThere are stars that are much bigger, and as such burn so quickly, that they do not make it a f... | [] | [] | [
[],
[]
] | |
2a85kq | Why is moonlight white? | I know that the sun, like all stars, emits light on a variety of wavelengths, both visible and non-visible. This means that light from all stars, including the one we orbit, are seen as pure white in space. I also know that (somehow), Earth's atmosphere filters out light of specific wavelengths, making sunlight appear ... | askscience | http://www.reddit.com/r/askscience/comments/2a85kq/why_is_moonlight_white/ | {
"a_id": [
"cisfxg8",
"cisrl5j"
],
"score": [
8,
5
],
"text": [
" > why, on a brightly moonlit night, is everything so devoid of colour compared to the daytime?\n\nIt's a function of your eyes, not of the scenery.\n\nRetina:\nrods return something akin to luminosity (sensitivity peaking ... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Purkinje_effect"
],
[]
] | |
5ettnl | what's happening in our brain when we're looking for an object, but we're actually holding it in our hand? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5ettnl/eli5_whats_happening_in_our_brain_when_were/ | {
"a_id": [
"daf4gwj",
"daf6h16",
"daf7bte",
"daf8dfe",
"dafn1wa",
"dafquv7",
"dafsbon",
"dafzr0v"
],
"score": [
3,
25,
4,
10,
6,
8,
2,
2
],
"text": [
"You can think about the brain working in 2 modes, one is the Subconscious mod (or auto-pil... | [] | [] | [
[
"objects.In"
],
[],
[],
[
"https://www.youtube.com/watch?v=vJG698U2Mvo"
],
[],
[],
[],
[]
] | ||
67y4pw | A recent Crusader Kings II expansion introduced a mechanic that allows your ruler to join a secret society of demon worshipers. Is there any actual historical precedent for the existence of anti-Christian, organized demonic worship in Christian Europe during the Middle Ages period? | I know that accusing people of witchcraft and demon worship wasn't all that uncommon of a occurrence in the Middle Ages, but are there any examples of actual organized societies, cults or sects that were based around explicit demonic worship or occultism born out of the Christian (I guess in this case mainly Catholic) ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/67y4pw/a_recent_crusader_kings_ii_expansion_introduced_a/ | {
"a_id": [
"dgubd4k"
],
"score": [
22
],
"text": [
"I haven't played the game, but this sounds a lot like the fate of the Knights Templar. \n\nBefore I go into this story, let's make one thing clear: There is no evidence of organized Satanic ritual activity on any scale. I assume there are sma... | [] | [] | [
[]
] | |
1zgkoh | what makes elevators so safe? seems like few deaths occur on what seems like a potentially dangerous machine. | Uberfacts' Twitter account shared a statistic that there were ~12,000 stairs-related deaths every year vs. only 27 for elevators.
Edit: Thanks to all for the explanations. I had an inkling that fail safes were in place but I was unawares of how they worked. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1zgkoh/eli5_what_makes_elevators_so_safe_seems_like_few/ | {
"a_id": [
"cftg4s0",
"cftg5eo",
"cftg8ka",
"cftgtu5",
"cfth0ul",
"cfthlcc",
"cftl63u"
],
"score": [
3,
8,
7,
3,
2,
3,
2
],
"text": [
"Elevators have many safety features built in whereas stairs, well, there's no accounting for stupidity. How hard i... | [] | [] | [
[],
[],
[],
[],
[],
[],
[]
] | |
4s0aup | How would early Anglo-Saxons decorate their shields? | Metal bits like Sutton-Hoo? Cloth, animal hide? Paint? Depictions of animals, symbols, runes, deities?
What colours did they use? Apparently Vikings thought pale blue and pale yellow were homosexual and garish colours, did Anglo-Saxons think that as well? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4s0aup/how_would_early_anglosaxons_decorate_their_shields/ | {
"a_id": [
"d55ogwx"
],
"score": [
3
],
"text": [
"Frustratingly, we don't know. Everything we know about shields in this period comes from archaeological sites (we don't have any contemporary art showing shield faces), and the fronts of shield, along with any decoration they may have displayed, ... | [] | [] | [
[
"https://www.academia.edu/477692/Early_Anglo-Saxon_shields_Archaeologia_Monograph_110_._London_Society_of_Antiquaries_of_London_1992",
"https://www.britishmuseum.org/pdf/BMTRB_5_Bullock_et_al.pdf",
"http://lukeuedasarson.com/NotitiaPatterns.html",
"academia.edu"
]
] | |
3i5yn8 | If dragonflies see almost 360 degrees how come they don't go blind looking at the sun? | ...and most other insects for that matter. | askscience | http://www.reddit.com/r/askscience/comments/3i5yn8/if_dragonflies_see_almost_360_degrees_how_come/ | {
"a_id": [
"cueydur"
],
"score": [
2
],
"text": [
"First a side note about insect vision, many insects, including dragonflies and damselflies, have ocellus. These are single lens eyes and are located on the top of the insect's head. So many different insects have \"eyes\" point up at the sun. ... | [] | [] | [
[
"https://books.google.com/books?id=rYI4AAAAIAAJ&pg=PA426&lpg=PA426&dq=ommatidia+bright+light&source=bl&ots=QK2P67oWAr&sig=IGBCqp-tnwwsgMjZVg7_qkm1VFo&hl=en&sa=X&ved=0CEAQ6AEwBWoVChMIvObDwY_ExwIVAZoeCh2SnAzx#v=onepage&q=ommatidia%20bright%20light&f=false",
"http:... | |
325mzk | numbers and letters on processor model? | Ex: Core i7-4710HQ @ 2.5 GHz
What does that all mean? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/325mzk/eli5_numbers_and_letters_on_processor_model/ | {
"a_id": [
"cq83zcf",
"cq842tf"
],
"score": [
3,
3
],
"text": [
"For starters, that's an Intel Chip. \n\ni7 is the product line. i3 is entry level, i5 is a step up, i7 is higher end.\n\n4710HQ is the model, which is assigned to that specific chip.\n\n4=4th generation (the current generati... | [] | [] | [
[],
[]
] | |
8ywy5p | why is mouth breathing bad for humans and why are we able to do it? | Some of youtube videos I listened to recently said that mouth breathing cause facial problems like a recessed chin and sinus problems. Some guy named Dr. Mike Mew even claims it causes crowding in the teeth. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8ywy5p/eli5_why_is_mouth_breathing_bad_for_humans_and/ | {
"a_id": [
"e2ebw9h",
"e2efrxi"
],
"score": [
5,
4
],
"text": [
"They don’t really say that mouth breathing is bad it’s just that breathing through your nose is better... the hairs in your nose “filter” the air hence why you get boogers(they are the “bad” stuff in the air)",
"Breathin... | [] | [] | [
[],
[]
] |
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