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 |
|---|---|---|---|---|---|---|---|---|---|
5a92m3 | why is alcohol the only calorically dense compound that is also a drug? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5a92m3/eli5_why_is_alcohol_the_only_calorically_dense/ | {
"a_id": [
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"Because alcohol is a fuel.\n\nCalories are just a form of measurement.\n\n1 calorie can raise 1ml of water 1 degree centigrade.\n\nAlcohol is a highly combustible material and therefore it is no surprise when it contains a l... | [] | [] | [
[],
[]
] | ||
cl90wf | what's the difference between a point and a vector? | This just won't get in my brain.
If I'm in a 3d space and have a point, it has 3 values (xyz) that defines where in space it is.
If I have a vector it also has 3 values to define where it is (or is headed which seems to be the same since at the end of it's arrow, it basically still has a point, that it's pointing at, ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cl90wf/eli5_whats_the_difference_between_a_point_and_a/ | {
"a_id": [
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"text": [
"~~A vector has more than three values to define it. In 3d space, it would require three to define its location, and at least two more to determine its direction and magnitude (length). It could also be defined by three values for its initial poin... | [] | [] | [
[]
] | |
17nxts | when i call a 10-digit number, and get the "it is not necessary to dial a 1 and area code...please try again" message, why can't the phone company just go ahead and complete the call? doesn't it have enough info? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/17nxts/eli5_when_i_call_a_10digit_number_and_get_the_it/ | {
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3seeku | If the amount of CO2 in the atmosphere was instantly cut in half, (we don't want to kill the plants) how immediately would the effects on global warming been noticed? | askscience | https://www.reddit.com/r/askscience/comments/3seeku/if_the_amount_of_co2_in_the_atmosphere_was/ | {
"a_id": [
"cwwh99m",
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"text": [
"It could actually take a very long time for temperatures to drop to pre-industrial levels, and this is the most worrisome part of global warming. The reason is that the temperature rise driven by increased CO*_2_* levels is... | [] | [] | [
[
"http://www.pnas.org/content/106/6/1704",
"http://earthobservatory.nasa.gov/Features/GlobalWarming/images/ipcc_scenarios.png",
"https://i.imgur.com/31WLn2S.jpg"
],
[
"https://en.m.wikipedia.org/wiki/Carbon_cycle"
]
] | ||
14ngl9 | I just read over a thread from about 6 months ago regarding Howard Zinn and I had a question | Many people made the claim that he was not the best source for information, but when asked, basically nobody came up with an alternative. I am interested in finding another enjoyable source as I am about 1/4 through A People's History, and would like more to go on. Thank you! | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/14ngl9/i_just_read_over_a_thread_from_about_6_months_ago/ | {
"a_id": [
"c7eplpf"
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"score": [
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"text": [
"Here's how I judge whether or not I will use a source in a paper: \n\nFirst, I look at the publisher. Academic and university publishers, such as Yale or Cambridge University Press, rarely publish tripe. If something is from a source like that, y... | [] | [] | [
[]
] | |
3uvfgt | What was the experience of lower-class and PoC women/LGBT people in Weimar Berlin? | I have been doing some reading lately on Weimar Berlin, largely in reference to women's shifting roles and the rise of LGBT cultures/acceptability. While it's hard to generalize (especially given my limited reading), it sounds to me like women and LGBT folk absolutely faced discrimination, but were able to socialize in... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3uvfgt/what_was_the_experience_of_lowerclass_and_poc/ | {
"a_id": [
"cxif9nn"
],
"score": [
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"text": [
"If I might ask a follow up, was there any sort of LGBT community like we see in modern cities? If so, was there a greater acceptance of people of color within those communities or was there similar discrimination as (I assume) there was within ma... | [] | [] | [
[]
] | |
428bcj | Would European knights have tossed away their shield in favor of wielding a sword two-handed? | Apologies if this has been asked before, I searched and found a couple [mildly](_URL_0_) [related](_URL_1_) questions, but not exactly what I wanted.
I noticed in a lot of movies depicting medieval knights, they sometimes throw their shield aside to use their longsword two-handed instead. Is this something that actual... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/428bcj/would_european_knights_have_tossed_away_their/ | {
"a_id": [
"cz8u3pa",
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"score": [
21,
3
],
"text": [
"There's a technological development in place in Medieval Western Europe. People moved from chainmail to coat of plates reinforced by chainmail with added gauntlets, banded armour for legs and arms and so on. By the late 14t... | [] | [
"https://www.reddit.com/r/AskHistorians/comments/20x01e/did_soldiers_in_the_sword_and_shield_era_in_big/",
"https://www.reddit.com/r/AskHistorians/comments/1k9v8w/are_greatswords_a_real_weapon_used_in_combat_or/"
] | [
[
"https://www.youtube.com/watch?v=1S_Q3CGqZmg"
],
[]
] | |
368nud | I've heard of westerners such as Matteo Ricci going to China very early on. Were there ever any Chinese or other East Asians like him who traveled West? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/368nud/ive_heard_of_westerners_such_as_matteo_ricci/ | {
"a_id": [
"crbrj1r",
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"text": [
"Jonathan D. Spence. The Question of Hu. New York: Alfred A Knopf, 1988.\n\nHu was a Chinese convert to Christianity- thanks in part to the work of Ricci and the Jesuit mission to China. He went to France where he ended up i... | [] | [] | [
[],
[]
] | ||
1owmf8 | Historically, were philosophers valued while they lived? | Or were the poor/struggled for their entire lives? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1owmf8/historically_were_philosophers_valued_while_they/ | {
"a_id": [
"ccwfepx",
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"score": [
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"text": [
"Some philosophers were most definitely valued in their life. Aristotle is a good example of this as he was a tutor Alexander the Great and was well-known in his time. Here's a link to his Wikipedia page: _URL_0_",
"Many ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Aristotle"
],
[]
] | |
itr37 | Is recent weather activity due to a change in global temperatures? | Perhaps It's just me living in Michigan, but from what I've noticed, the past few years we have had a larger variation in weather. In the winter, its crippling snow storms, now, it seems like we have moments of severe heat, followed by crippling thuderstorms. I know events like these are happening around the world. Is ... | askscience | http://www.reddit.com/r/askscience/comments/itr37/is_recent_weather_activity_due_to_a_change_in/ | {
"a_id": [
"c26llwo"
],
"score": [
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],
"text": [
"Yes and no. Certainly an increase of average global temperature (which has been clearly demonstrated) allows for more extremes to occur in local weather. But asking something like \"is today's weather affected by global warming\" is similar to ... | [] | [] | [
[]
] | |
1bmh2e | Of all the countries that the U.S. promoted democracy in, which ones actual had long term stability and legitimacy? | And would France, Italy Germany, and Japan count? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1bmh2e/of_all_the_countries_that_the_us_promoted/ | {
"a_id": [
"c982gak"
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"score": [
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"text": [
"I can only answer the second part of your question, the answer is no except for Japan where I am not sure.\n\nThe French revolution can be seen as being some what accelerated due to French participation in the American Revolution, but it was alre... | [] | [] | [
[]
] | |
4upla6 | how can we "look back in time" through telescopes to galaxies that are millions of years old? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4upla6/eli5_how_can_we_look_back_in_time_through/ | {
"a_id": [
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"score": [
3,
3,
3
],
"text": [
"Any time you are looking at something you are looking \"back in time\" because light has a maximum speed, it isn't instantaneous. If you look up at the sun, you aren't seeing the sun as it is now, you a... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Cosmic_microwave_background"
],
[],
[]
] | ||
36jnda | why do hip-hop/rap artists collaborate on albums more often than other genres? | Just wondering because I can get a Tech N9ne album with every other song featuring another artist, but go and buy a Rock album with just the guys on the cover. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/36jnda/eli5_why_do_hiphoprap_artists_collaborate_on/ | {
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"text": [
"I've often thought about this myself.\n\nI would guess that hip hop as a whole is much more of a \"community\" than other genres, and thus it sports a compet... | [] | [] | [
[],
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[],
[],
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2m3je6 | if a lot of decommissioned satellites are just left in orbit, wouldn't it be increasingly harder for spacecraft to avoid hitting space debris? | Just read on the front page about the nuclear reactor that failed in space and was left in orbit where it will be for another 4000 years.
Is there usually a disposal plan for old satellites? I know that some satellites go out of orbit and crash-land on Earth. Is that the main way of disposal? Are a lot of decommission... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2m3je6/eli5_if_a_lot_of_decommissioned_satellites_are/ | {
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"text": [
"We [keep track](_URL_1_) of the junk, for the most part. \n\nThe space around our planet also has the advantage of being a very large volume, so you can fit quite a lot of stuff in there. That being said, collisions can happ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Graveyard_orbit",
"http://en.wikipedia.org/wiki/Space_debris#mediaviewer/File:Debris-GEO1280.jpg"
],
[]
] | |
pj71h | a small emergency. eli5 an international wire transfer | I'm living abroad for a few months and I lost and then cancelled my debit card. No charges that were not my own were found but its going to be a few weeks before the new one will arrive. I have enough money to last a few days and can loan from a friend if need be but would prefer not to.
I've been told its possible to... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/pj71h/a_small_emergency_eli5_an_international_wire/ | {
"a_id": [
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"First of all, I think we'd need to know which country you are in.\n\nAnway, take a look at IBAN: _URL_0_\n\nYou need to get an account you can access from where you are. Probably that means you need a local bank account."
]
} | [] | [] | [
[
"http://en.wikipedia.org/wiki/International_Bank_Account_Number"
]
] | |
289zkx | why do coupons have expiration dates? | I mean, if a coupon expires, that lessens the chance that the costumer will go to the store and buy something. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/289zkx/eli5_why_do_coupons_have_expiration_dates/ | {
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"ci8uz8p",
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"score": [
5,
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"text": [
"Coupons are a form of advertising. They are often meant to push certain products for a specified length of time. ",
"Coupons are accounted for by money set aside for the promotion. The expiration da... | [] | [] | [
[],
[],
[]
] | |
4gg86u | How much was academia boosted during the Vietnam war by people trying to avoid the draft? | I've met one person who claims he got his doctorate only because he kept taking courses to avoid having to be drafted. How common was this, and how much did the population of academics increase because of it? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4gg86u/how_much_was_academia_boosted_during_the_vietnam/ | {
"a_id": [
"d2hykrr"
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"text": [
"There’s two components to this question. First, in comparison to other periods, did the number of doctorates dramatically rise during the Vietnam War era? Second, if so, what caused it?\n\n**Did PhDs rise?**\n\nLooking at the statistics, there i... | [] | [] | [
[
"http://www.nsf.gov/statistics/nsf06319/pdf/nsf06319.pdf",
"https://www.insidehighered.com/news/2014/12/08/number-phds-awarded-climbs-recipients-job-prospects-dropping",
"https://www.historians.org/publications-and-directories/perspectives-on-history/february-2016/the-troubled-academic-job-market-for-... | |
5a0thn | why are negative g-forces harder to take in than positive ones ? | For instance, why is it that fighter jet pilots are able to resist positive vertical Gs of more than 6, but negative vertical Gs of 3 at most ? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5a0thn/eli5_why_are_negative_gforces_harder_to_take_in/ | {
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"Gravity exerts an effect on the blood in your vessels.\n\nIn positive G-force, the excess gravitational pull tends to cause your blood to stagnate in your calves, in the compliant and easily distensible veins. Pilots are abl... | [] | [] | [
[],
[]
] | |
10sycf | Is time a human construct or is it a property of our universe? | I do not know if my question is clear but I am uncertain how else to phrase the question. Some follow up questions: What is the proper definition of time in the physics community? Is a second always a second? | askscience | http://www.reddit.com/r/askscience/comments/10sycf/is_time_a_human_construct_or_is_it_a_property_of/ | {
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"General relativity says that even if time has nothing to do with humans, its relative passage will depend on various factors like mass and velocity, i.e., it will pass at different rates in different parts of the universe. W... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Arrow_of_time"
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] | |
42m2wd | Was the narrowing of the rich poor divide and the rise of the social state in in Europe and elsewhere consciously promoted by the governments to lessen the appeal of socialist ideas? | If you look at the data about the income gap between rich and poor in the West and the rise of the social state in Europe, you'll see that it corresponds in time with the boom of the Soviet union and the other socialist countries.
To what extent was that coincidental and to what extent was it promoted consciously by t... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/42m2wd/was_the_narrowing_of_the_rich_poor_divide_and_the/ | {
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"text": [
"Yes, to some extent. There was a conscious effort to come to a compromise whereby workers rights were protected and the capitalist class as well. This was done by centrist parties aiming to undercut the appeal of the far-lef... | [] | [] | [
[
"https://www.marxists.org/archive/marx/works/1847/communist-league/1850-ad1.htm"
],
[]
] | |
672444 | How accurate is this video about The Korean War by Knowledge Hub? | [Here's the Video](_URL_0_)
Some major points that I'm especially interested in learning about accuracy are
- 3:49 "Nobody believed the USA would get involved in Korea after a huge war like WW2."
- 6:29 "The American public had paid little attention to the war" (BTW This just feels wrong to me because my APUSH class... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/672444/how_accurate_is_this_video_about_the_korean_war/ | {
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"text": [
"I can't give you much on American public opinion, but I can address your third point.\n\nIn the few years of division before war (1945-50), North Korea implemented a lot of *really popular policies*. This included land reform that parceled out pr... | [] | [
"https://www.youtube.com/watch?v=F6cE_dcWJFk"
] | [
[
"http://apjjf.org/-Charles-K.-Armstrong/3460/article.html",
"http://www.cornellpress.cornell.edu/book/?GCOI=80140100692200&fa=author&person_id=4944",
"https://cross-currents.berkeley.edu/e-journal/issue-14",
"https://www.amazon.com/Korean-War-History-Library-Chronicles/dp/081297896X"
]
] | |
36gjhb | why do children hate going to sleep so much? it feels so good! | It seems pretty universal that kids hate going to sleep. It also seems universal that adults love hitting the pillow after a long day. Children are the masters of doing what feels good at the moment without regard to others. Why do they hate sleep so much when adults can't seem to get enough? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/36gjhb/eli5_why_do_children_hate_going_to_sleep_so_much/ | {
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"Well, kids like to be active, not lazy. They dont work all day. Adults, however, do work all day, and are much more tired at the end of a day.",
"I think it has more to do with them having to go to ... | [] | [] | [
[],
[],
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] | |
1eg6sm | why some people believe there is a correlation between guns and freedom. | Not a troll, I've just never heard any simple answer to this. I get that part of it is in case you need to overthrow a tyrannical government, but isn't that strictly speaking, "treason"? Also, are people who live in countries where fewer people carry guns and have stricter gun controls less free? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1eg6sm/eli5_why_some_people_believe_there_is_a/ | {
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"text": [
"This is a somewhat loaded question, and the answer is somewhat subjective, but the basic premise is that in our constitution, which is the document upon whic... | [] | [] | [
[],
[],
[],
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] | |
i5fiz | When something is orbiting another object in space is it really just free falling toward that object but keeps missing? | askscience | http://www.reddit.com/r/askscience/comments/i5fiz/when_something_is_orbiting_another_object_in/ | {
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"text": [
"As opposed to what?\n\nThat's what the saying is supposed to make you realize. Free falling *means* that you're only feeling the effects of gravity. If you're orbiting another ob... | [] | [] | [
[],
[
"http://waowen.screaming.net/revision/force&motion/ncanon.htm"
],
[],
[]
] | ||
4owhy0 | why is florida the only state where alligators and crocodiles live side by side? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4owhy0/eli5_why_is_florida_the_only_state_where/ | {
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"text": [
"Alligators are more tolerant of colder water and weather, and thus are found not only in Florida but in Georgia, Louisiana, Alabama, Mississippi, Texas, Arkansas, North Carolina and South Carolina.\n\... | [] | [] | [
[],
[],
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31vf5h | What was the historical significance of Beowulf on literacy? | My professor was lecturing about Beowulf, and how it was one of the first works written in vernacular instead of Latin. Is this true? I decided to write about it for my research paper, but cannot find a source for that, and he can't seem to recall where it is he learned it.
Edit: What I'm getting at is, Beowulf aside,... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/31vf5h/what_was_the_historical_significance_of_beowulf/ | {
"a_id": [
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"text": [
"Beowulf survives in a manuscript that was probably written in the early 11th century, and there's a lot of debate about when exactly the poem itself was originally written; you see dates between the 7th century and 11th, but it was probably the 9... | [] | [] | [
[
"https://books.google.co.uk/books?id=xBg_Sjhy4hoC&dq=vernacular+anglo-saxon+england&source=gbs_navlinks_s"
]
] | |
11953n | - how my dog knows it's me coming to the door, before he can even see me. he barks at everyone but me, but he has no line of sight on me. | I live in a bad neighborhood so I just have a door with a peephole, and one window facing outwards (to the street) that is covered by a chest of drawers. My dog is obviously a genius of epic proportions, but I'd like to know how the clever bastard does it. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/11953n/eli5_how_my_dog_knows_its_me_coming_to_the_door/ | {
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"score": [
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"text": [
"Do you come home at the same time every day?",
"Not sure if you arrive home in a car or not but my dog probably identifies me by th... | [] | [] | [
[],
[],
[],
[],
[],
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] | |
2nst1m | How does vegetation survive in radiation-heavy zones like Chernobyl while humans cannot? | After watching the video of [drone footage above Chernobyl](_URL_0_), I've been curious as to how the plant-life has managed to overtake the city with such high levels of radiation? | askscience | http://www.reddit.com/r/askscience/comments/2nst1m/how_does_vegetation_survive_in_radiationheavy/ | {
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"score": [
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35,
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"text": [
"Humans could live in Chernobyl, but one would risk encountering a hot piece of equipment or material could be ... | [] | [
"http://vimeo.com/112681885"
] | [
[
"http://chernobylgallery.com/chernobyl-disaster/radiation-levels/"
],
[
"sciencemag.org",
"http://news.sciencemag.org/2009/05/how-plants-survived-chernobyl",
"http://www.popsci.com/article/science/ask-anything-do-plants-get-cancer"
],
[],
[],
[],
[],
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] | |
ezxp2e | how does a meteorologist detect lighting? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ezxp2e/eli5_how_does_a_meteorologist_detect_lighting/ | {
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"text": [
"Lightning detection takes advantage of the radio frequency pulse that lightning causes. Several antennas collect the signals and the timing gives the direction.",
"Next time there is a lightning storm turn on your car r... | [] | [] | [
[],
[]
] | ||
20dnwk | Before the wide spread of coffee and tea, what were other popular stimulants or pick me ups in European culture? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/20dnwk/before_the_wide_spread_of_coffee_and_tea_what/ | {
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"text": [
"Salep was big in the 17th and 18th centuries across northern Europe. Still is in Turkey, the Balkans, and the middle east.",
"In Medieval Europe the upper classes would us... | [] | [] | [
[],
[
"http://cnx.org/content/m34243/latest/"
],
[],
[
"http://en.wikipedia.org/wiki/Pope_Clement_VIII",
"http://www.reddit.com/r/AskHistorians/comments/1hhvv3/",
"http://en.wikipedia.org/wiki/Chervil",
"http://en.wikipedia.org/wiki/Mocha,_Yemen"
]
] | ||
jzem5 | what is the deal with al jazeera and why is there such a stigma against them in the us? | I've never watched Al Jazeera before. I hear about its virtues ONLY on Reddit. Everyone talks about how it's one of the last great news sources.
But in real life, it seems like most people think it's some terrorist channel. Why? How did this happen? How did it become "infamous"? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/jzem5/eli5_what_is_the_deal_with_al_jazeera_and_why_is/ | {
"a_id": [
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"score": [
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],
"text": [
"I think the stigma comes from two main sources:\n\n* After 9/11, they broadcasted the Taliban's/Al Qaeda's videos, which, a lot of people felt like gave those groups credence, recognition, and some would argue, favor. \n\n*... | [] | [] | [
[],
[]
] | |
bxqw2m | During the D-day invasion did the allies use smoke grenades and smoke mortars to cover their advance on the beaches? I don’t think I’ve seen any examples of that in movies. | Maybe it just doesn’t look as cool in the movies to see a massive cloud on the beach and Germans randomly shooting into it. I haven’t read anything saying this either but admittedly I’ve only read into it a little. The pictures from D-day don’t seem to show any smoke clouds either except for the ones created by bombs... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/bxqw2m/during_the_dday_invasion_did_the_allies_use_smoke/ | {
"a_id": [
"eq99hd3"
],
"score": [
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],
"text": [
"Smoke directly on the beaches during landings was as much of a hindrance as a help. On Omaha beach smoke and dust from naval bombardment and resultant fires caused navigational difficulties for the landing craft, compounded by a strong current, ... | [] | [] | [
[
"http://www.iwm.org.uk/collections/item/object/205022927",
"http://www.bbc.co.uk/history/ww2peopleswar/stories/11/a2688311.shtml",
"http://www.iwm.org.uk/collections/item/object/205211823"
]
] | |
biwo4e | Why do some birds hop while some of them walk? | askscience | https://www.reddit.com/r/askscience/comments/biwo4e/why_do_some_birds_hop_while_some_of_them_walk/ | {
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"text": [
"A few moment's searching found this RSPB (Royal Society for the Protection of Birds) page: _URL_0_\n\n > Most small garden birds, like tits and finches, hop rather than run.... | [] | [] | [
[
"https://ww2.rspb.org.uk/birds-and-wildlife/bird-and-wildlife-guides/ask-an-expert/previous/hop_or_run.aspx"
],
[
"https://www.cs.ubc.ca/~van/papers/2013-TOG-MuscleBasedBipeds/2013-TOG-MuscleBasedBipeds.pdf",
"https://www.youtube.com/watch?v=pgaEE27nsQw"
],
[
"https://royalsocietypublishin... | ||
7pdetm | gaussian distrubition - what it is, and how it works | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7pdetm/eli5_gaussian_distrubition_what_it_is_and_how_it/ | {
"a_id": [
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"score": [
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"text": [
"Essentially, the Gaussian distribution (or normal- since that's what I'm used \nto, I'll call it that from now on) is a kind of \"default\" for calculating the \nchance that a continuous data point will fall in some range, o... | [] | [] | [
[],
[]
] | ||
6dxilu | What do historians today make of the 1952 "Stalin note" that offered a demilitarized and unified Germany? | Was it a genuine offer? If so, why were the Soviets making it? If not, how could it have been used cynically? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6dxilu/what_do_historians_today_make_of_the_1952_stalin/ | {
"a_id": [
"di64n91"
],
"score": [
9
],
"text": [
"From an [earlier answer of mine](_URL_0_)\n\nThe Stalin Note (or correctly, note*s*) was an event in the Cold War that elicited a great deal of controversy in both Germany and in the West when Stalin first broached the topic. The debate at the ti... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/4vk6db/was_there_any_real_authenticity_to_the_stalin/"
]
] | |
33uxnq | why does most graffiti look similar? | Obviously this is pretty objective, but to a person who doesn't pay attention to graffiti details, why does so much of it seem to be consistent in the style, font, etc? Is it the same person or people doing it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/33uxnq/eli5_why_does_most_graffiti_look_similar/ | {
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"cqolufa",
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"score": [
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],
"text": [
"I'm gonna have to take a guess here and say that people are influenced by other people and add their own touch to it. The average person may not notice that difference, just like t... | [] | [] | [
[],
[],
[],
[]
] | |
4o8rpv | Is human DNA 'hashable' or does it change too much over time? | I was discussing using a blockchain as a birth register with a friend. The idea is basically to genetically sequence a baby and create an identity on the blockchain using a "hashed" (as in Computer Science's SHA-512) version of its genome. I want to use a non-reversible hash to not have to place the full genome on the ... | askscience | https://www.reddit.com/r/askscience/comments/4o8rpv/is_human_dna_hashable_or_does_it_change_too_much/ | {
"a_id": [
"d4b9rhh"
],
"score": [
3
],
"text": [
"No. But not because human DNA would change. But because accuracy of our sequencing hardware is not good enough. The thing with hashing is that even single bit difference results in completely different hash. Modern sequencing equipment is only [p... | [] | [] | [
[
"https://en.wikipedia.org/wiki/DNA_sequencing"
]
] | |
mkw67 | How come there is no cure for lupus? Is anyone working towards one? | askscience | http://www.reddit.com/r/askscience/comments/mkw67/how_come_there_is_no_cure_for_lupus_is_anyone/ | {
"a_id": [
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"c31rfsa",
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"score": [
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16,
7,
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],
"text": [
"I don't know why we don't have a cure, nor how close we are to one. But with [15,800](_URL_0_) papers showing up in google scholar fo... | [] | [] | [
[
"http://scholar.google.com/scholar?hl=en&q=lupus&as_sdt=0%2C50&as_ylo=2011&as_vis=0"
],
[
"http://www.lupus.org/webmodules/webarticlesnet/templates/new_researchlfa.aspx?articleid=1144&zoneid=31",
"http://www.wchstv.com/newsroom/healthyforlife/2517.shtml"
],
[],
[
"htt... | ||
4iyv0p | Is Magma the Same? | Is all magma the same? for example if you have a piece of shale and it melts into molten rock (magma), would the magma be the same magma as molten marble? Or would the magma be made of a different combination of materials. | askscience | https://www.reddit.com/r/askscience/comments/4iyv0p/is_magma_the_same/ | {
"a_id": [
"d32u8ej"
],
"score": [
11
],
"text": [
"No. The chemical compositions of your two hypothetical melts would be different and thus the physical properties would be different.\n\nThis is more easily discussed in terms of more realistic magma/lava types that we see regularly. In consideri... | [] | [] | [
[
"https://www.e-education.psu.edu/geosc30/node/720"
]
] | |
20gwmb | why do they remake classic/awesome movies and ruin them? why don't they take lousy movies and remake them into something good? | Yes, I realize it's just about money and marketing. But aren't they concerned that it would harm their reputation as a filmmaker/actor? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/20gwmb/eli5why_do_they_remake_classicawesome_movies_and/ | {
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"score": [
2,
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"text": [
"People like copying things that were great so they can get recognition. Recreating and reconstructing something lousy takes work and is a risky move I guess",
"For the same r... | [] | [] | [
[],
[],
[],
[]
] | |
gd7rs | How does reflection work in an atomic level? | Initially, speaking from my chemistry background, I'd think it's absorption / emission events. After reading more, it's apparent that's not the case. We're dealing with solid state materials here, and I see terms like bandgap and phonons thrown around, but those don't explain it for me too well. The former explains the... | askscience | http://www.reddit.com/r/askscience/comments/gd7rs/how_does_reflection_work_in_an_atomic_level/ | {
"a_id": [
"c1mqcaj",
"c1mqy1c"
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"score": [
13,
2
],
"text": [
"Dimpl3s explanation here isn't really correct. A photon striking an atom can be absorbed and re-emitted, but this isn't what causes reflection. While a ball bouncing off a wall isn't a good model, classical physics does a p... | [] | [] | [
[],
[
"http://vega.org.uk/video/programme/46"
]
] | |
3zo91w | how does denuvo drm work? | If Denuvo DRM works by pre-emptively encrypting a software's instructions and then decrypting the instructions in real-time to execute on the CPU, why can't you simply grab the key used to decrypt the instructions from the RAM? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3zo91w/eli5_how_does_denuvo_drm_work/ | {
"a_id": [
"cynx1tm"
],
"score": [
5
],
"text": [
"You can grab the key from RAM and use it to decrypt the executable. No DRM system can prevent someone from copying the program if it's running on their system, because the code must get decrypted at some point in order to execute. All DRM and obf... | [] | [] | [
[]
] | |
b7wqkc | What would it have been like to be a spectator at the games in a Roman coliseum? | Asking again without the title error.
We have pretty good ideas of what the games would have been like in Roman coliseums, but what would it have been like to be a fan in the stands? How different would it have been from modern arena sports? I imagine there would have been plenty of food and drink, but were there str... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/b7wqkc/what_would_it_have_been_like_to_be_a_spectator_at/ | {
"a_id": [
"ejuugyl"
],
"score": [
9
],
"text": [
"I can certainly comment on the availability of food a drink, and the attendance in Israel. \n\nTypically local salesmen would be allowed to enter the stands to sell produce. Though this was unregulated, typically they avoided local cuisine and in... | [] | [] | [
[]
] | |
3r3ovf | if time is infinite, won't everything exist again in the future? | If time is infinite, then won't everything eventually come to be again? Like a loop? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3r3ovf/eli5_if_time_is_infinite_wont_everything_exist/ | {
"a_id": [
"cwkkz1r",
"cwkl243",
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"score": [
50,
2,
5
],
"text": [
"Just because something is infinite doesn't mean it contains all permutations.\n\nThere is an infinite amount of numbers between 2 and 3, but none of them are 4.",
"Time is a measure created by huma... | [] | [] | [
[],
[],
[]
] | |
5klcf0 | why do people have such a difficult time admitting their ignorance of something? | Aside from fanatical egos and narcissism, why is it difficult to admit ignorance and ask for information on a topic that one has trouble discerning? I think it would be much more progressive to admit ignorance and attempt to fill in those intellectual gaps, but hey, that's just me. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5klcf0/eli5_why_do_people_have_such_a_difficult_time/ | {
"a_id": [
"dboqhh0",
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"score": [
2,
3,
3
],
"text": [
"In school, you're not allowed to say \"I don't know.\" You have to put forth whatever you do know or infer, and do it with confidence. At the least, this was my experience. Schools push this attitude be... | [] | [] | [
[],
[],
[
"https://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect"
]
] | |
2g78m0 | What causes such a drastic difference between H2O and H2O2? | I asked this question in my chemistry class and my teacher couldn't really answer it, I'd like to know more about the subject! But basically, why does just adding another oxygen molecule cause the compound to become so much more volitile than water? | askscience | http://www.reddit.com/r/askscience/comments/2g78m0/what_causes_such_a_drastic_difference_between_h2o/ | {
"a_id": [
"ckgvbdj"
],
"score": [
7
],
"text": [
"The oxygen oxygen single bond is quite weak in peroxide H-O-O-H. While there are lots of factors determining reactivity, one way to look at it is how easy the bonds in the molecule are to break. Things with weak bonds tend to be reactive and thin... | [] | [] | [
[]
] | |
5q3kj1 | Where chirality is present, are both enantiomers of the given molecule formed in equal amounts? | askscience | https://www.reddit.com/r/askscience/comments/5q3kj1/where_chirality_is_present_are_both_enantiomers/ | {
"a_id": [
"dcxcnpn"
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"score": [
2
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"text": [
"No, in certain systems it will not be 50%. Obviously biological systems such as amino acids that are D chirality as these are essentially all made that way by enzymes. There is no L amino acids, they are all made with D chirality. \n\nThere are a... | [] | [] | [
[]
] | ||
nlefy | Are some nerves on different body parts connected somehow? | I'm not sure how to go about explaining this sensation I have. It seems like a nerve or group of nerves on different parts of my body are "connected" somehow. By this I mean occasionally when I scratch a specific spot on my back I will feel a pinpoint sharp pain on the skin on my elbow. It just happened again, while I ... | askscience | http://www.reddit.com/r/askscience/comments/nlefy/are_some_nerves_on_different_body_parts_connected/ | {
"a_id": [
"c3a20sn",
"c3a20sn"
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"score": [
2,
2
],
"text": [
"All nerves are connected at some point. They all return to the spinal cord lt the Brain. However, not in the manner you described. It is more than likely referred pain.",
"All nerves are connected at some point. They all... | [] | [] | [
[],
[]
] | |
1ppgl8 | when the us "sends aid" to foreign countries such as israel, what is actually exchanged? | I read today that the US cut $5 billion from food stamps and approved nearly $500 million in aid to Israel? What does this mean? What are the terms of this transaction? It can't simply be just a $500 million transactions between governments. I imagine the money is in the form of food or other goods/supplies.
I'd pref... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ppgl8/eli5_when_the_us_sends_aid_to_foreign_countries/ | {
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"score": [
3,
2,
2,
2
],
"text": [
"Basically, they get money, but they are required to spend most of it with US corporations. In that sense, it's as much a subsidy to US defense contractors as it is foreign aid.\n\... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Israel%E2%80%93United_States_relations#United_States_aid"
],
[],
[],
[]
] | |
15bi2x | veganism. the what can be used from animals? what cant? | im really curious. and dont read to good, so eli5 please!
| explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/15bi2x/eli5_veganism_the_what_can_be_used_from_animals/ | {
"a_id": [
"c7kydpw"
],
"score": [
2
],
"text": [
"Anything that comes from animals, vegans do not have anything to do with it. Milk, eggs, some soaps, leather, feathers, if it has to do with an animal, its a no-go. \n\nSource: my mom used to be a vegan."
]
} | [] | [] | [
[]
] | |
23xbbu | Why is it that when you have a cold, one of your nostrils is blocked, and when it finally clears, the other one blocks? | askscience | http://www.reddit.com/r/askscience/comments/23xbbu/why_is_it_that_when_you_have_a_cold_one_of_your/ | {
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"ch1hum5",
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"score": [
2432,
2,
5,
3
],
"text": [
"Because your nostrils split their workload. Throughout the day, they each take breaks in a process of alternating congestion and decongestion called the nasal cycle. At a given ... | [] | [] | [
[
"http://mentalfloss.com/article/30363/why-does-your-nose-get-stuffy-one-nostril-time"
],
[],
[],
[]
] | ||
i5bn6 | Can we "fix" our genome so that we can synthesize Vitamin C? | So apparently humans (as well as other apes and monkeys) [can't synthesize Vitamin C](_URL_0_) which is why we get scurvy without proper nutrition. I don't know what we can and can't do these days with genetics: Can we just repair the gene in embryos and begin birthing a race of assuredly scurvy-free humans? Any idea o... | askscience | http://www.reddit.com/r/askscience/comments/i5bn6/can_we_fix_our_genome_so_that_we_can_synthesize/ | {
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"score": [
8,
10,
9,
2
],
"text": [
"Why would we *want* to? Vitamin C is not hard to find under most conditions. It's cheap in supplement form, too.",
"i guess we *could* implement the biochemical pathway, but... | [] | [
"http://en.wikipedia.org/wiki/L-gulonolactone_oxidase"
] | [
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Linoleic_acid"
]
] | |
1y0i99 | Is "now" the same for everyone and everything in the galaxy? | I understand relativity, I understand that the faster you go, the slower time goes for you (or, the faster time goes for everyone else, since it would appear time was going the same speed for yourself). But is "now" the same for everyone? Maybe the rate of change of now is faster or slower, but do people/things/space... | askscience | http://www.reddit.com/r/askscience/comments/1y0i99/is_now_the_same_for_everyone_and_everything_in/ | {
"a_id": [
"cfg9ncl",
"cfgafa9"
],
"score": [
3,
5
],
"text": [
" > Is \"now\" the same for everyone and everything in the galaxy?\n\nNo, it's not. Because the laws of relativity result in some observers seeing events happen faster or slower than others, this means that the idea of \"sim... | [] | [] | [
[],
[]
] | |
44t0qo | i've never seen a fat bird. is that because flying is vital for them to survive so natural selection kills them or because birds simply don't get fat? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/44t0qo/eli5_ive_never_seen_a_fat_bird_is_that_because/ | {
"a_id": [
"czson16",
"czspe0s"
],
"score": [
2,
8
],
"text": [
"You've never seen [a fat bird](_URL_1_) before? You're [missing out](_URL_0_).",
"People commenting here don't know what they're talking about. Birds do get fat the closer you get to the cold extremes (arctic, mountain p... | [] | [] | [
[
"http://36.media.tumblr.com/tumblr_lqsoqsgvbH1r2wrwho1_500.jpg",
"http://4.bp.blogspot.com/-N6Jgscsk0iY/TZYCp56IZzI/AAAAAAAAABQ/4ocTSBoaNQc/s1600/Fat%2Bpenguin.jpg"
],
[]
] | |
2bdr9x | How did the Vandals managed to invade North Africa? | Considering that they lived far away from there and not even in coastal areas, and what are their motives conquering a place that is really far away? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2bdr9x/how_did_the_vandals_managed_to_invade_north_africa/ | {
"a_id": [
"cj4eqxm"
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"score": [
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"text": [
"By the time Vandals invaded North Africa, they were situated in Spain for over a decade, so passing into Africa was a next logical step.\n\nIt is worth mentioning that, like with most successful \"barbarian\" invasions, it was really a civil war... | [] | [] | [
[]
] | |
1ce73h | Monday Mysteries | Notable Disappearances | As [announced last week](_URL_0_), we're going to give something new a try on Mondays for a bit to see how it fares.
The "Monday Mysteries" series will be focused on, well, mysteries -- historical matters that present us with problems of some sort, and not just the usual ones that plague historiography as it is. Situ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1ce73h/monday_mysteries_notable_disappearances/ | {
"a_id": [
"c9fnkdm",
"c9foisa",
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"c9g7rfj"
],
"score": [
47,
8,
42,
34,
23,
27,
5,
21,
11
],
"text": [
"Lord Lucan's always been interesting one. A playboy aristocrat ... | [] | [
"http://www.reddit.com/r/AskHistorians/comments/1bx8ww/monday_mishmash_history_on_television/"
] | [
[],
[
"http://en.wikipedia.org/wiki/List_of_people_who_disappeared_mysteriously"
],
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Bergen_Greenland_Company",
"http://en.wikipedia.org/wiki/Hatteras_Island",
"http://en.wikipedia.org/wiki/Christian_IV%27s_Expeditions_to_Greenland",
"http:/... | |
7tj76t | It is well-known that there is an increase of antibiotic resistant bacteria due to overuse in oral antibiotics. Can overuse of over the counter (OTC) topical antibiotics contribute to this problem? | [deleted] | askscience | https://www.reddit.com/r/askscience/comments/7tj76t/it_is_wellknown_that_there_is_an_increase_of/ | {
"a_id": [
"dtdjzc4",
"dtdk2mp"
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"score": [
6,
2
],
"text": [
"Yes, topical antibiotics do produce resistance and this is well beyond the skin. See _URL_0_. If you have a skin infection,by all means use them. This also applies to antimicrobial soaps, and triclosan should be avoided: _UR... | [] | [] | [
[
"https://www.ncbi.nlm.nih.gov/pubmed/29229636",
"https://www.ncbi.nlm.nih.gov/pubmed/29112840"
],
[
"http://onlinelibrary.wiley.com/doi/10.1002/psb.1480/pdf"
]
] | |
2ht6q8 | why don't/can't 100% electric cars like tesla recharge themselves while in use like a standard car battery through its alternator? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ht6q8/eli5_why_dontcant_100_electric_cars_like_tesla/ | {
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"They could, if you threw a gas motor in them. That takes up space and... | [] | [] | [
[],
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cew92m | Do general antibiotics also kill off gut bacteria? Could this indirectly cause a lessened effectivity of nutrient absorption in the intestines? | askscience | https://www.reddit.com/r/askscience/comments/cew92m/do_general_antibiotics_also_kill_off_gut_bacteria/ | {
"a_id": [
"euasc36"
],
"score": [
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"text": [
"Some of the gut bacteria that are killed by antibiotics are involved in the degradation of food and molecules in the food into smaller units (smaller molecules) that are able to be absorbed in the gut. Therefore, killing those microbes does affec... | [] | [] | [
[]
] | ||
1ffxd2 | What is the smallest size an object in space could be to have a moon orbit it? | askscience | http://www.reddit.com/r/askscience/comments/1ffxd2/what_is_the_smallest_size_an_object_in_space/ | {
"a_id": [
"ca9xhkv"
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"score": [
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"text": [
"There is no lower size limit. Two specs of dust could orbit each other; there is nothing in the laws of nature to prohibit it. Of course, in the inner Solar System the pressure of light and solar wind might be more significant than gravity."
]... | [] | [] | [
[]
] | ||
3tjare | What are some of the most cleverly designed experiments in scientific history? | askscience | https://www.reddit.com/r/askscience/comments/3tjare/what_are_some_of_the_most_cleverly_designed/ | {
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131,
277,
32,
190,
32,
9... | [] | [] | [
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"https://en.wikipedia.org/wiki/Michelson%E2%80%93Morley_experiment#Michelson.E2.80.93Morley_experiment_.281887.29",
"https://en.wikipedia.org/wiki/Aether_drag_hypothesis",
"https://en.wikipedia.o... | ||
4vmpcv | why meals ready to eat (mres) take so long to leave the body or just cause incontinence? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4vmpcv/eli5_why_meals_ready_to_eat_mres_take_so_long_to/ | {
"a_id": [
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"score": [
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"text": [
"They are purposely low in fiber because they are made to be used where there aren't toilets and/or you need to carry your poop with you so you don't get discovered, so constipation is a feature, not a ... | [] | [] | [
[],
[],
[]
] | ||
16hqap | If atoms only emit light with specific (discrete) values for wavelengths, why do bodies emit a continuous spectrum of radiation? | The notions of the emission spectrum kind of collided with the black-body radiation information I had...
If you heat a body, like tungsten wire in a light bulb, it acts like a black-body and you get the classic continuous spectrum... But that body is made up of atoms, and atoms only release discrete radiation when an ... | askscience | http://www.reddit.com/r/askscience/comments/16hqap/if_atoms_only_emit_light_with_specific_discrete/ | {
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"text": [
"A black body is an idealized model, like a perfect vacuum or a frictionless surface. It is an approximation which holds up well in many cases, but actual things deviate from the black-body model.\n\nTh... | [] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Black_body"
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39sm7r | Found what I assume to be old pottery, any archeologists who can ID this for me? (album in description) | Hi /r/AskHistorians !
I went mountainbiking the other day and found these near a construction site : _URL_0_
I googled "old pottery" and "roman" pottery etc and it seems to be some kind of old roman pottery but I'd like to know more.
It is found in Belgium, in Flemish Brabant (the greater area around Brussels).
It ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/39sm7r/found_what_i_assume_to_be_old_pottery_any/ | {
"a_id": [
"cs634iq"
],
"score": [
4
],
"text": [
"I'm not a belgian pottery expert, but I do have a smattering of typological knowledge for most of north western europe.\n\nIf you ever find red glazed stuff that's samain ware, which is a dead ringer for Roman. But this could also be Greyware, wh... | [] | [
"http://imgur.com/a/1IpLN"
] | [
[
"https://upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Roman_pottery_from_Britain.jpg/1024px-Roman_pottery_from_Britain.jpg"
]
] | |
2s8r4f | What would happen everyone on a full passenger jet ran to the front or the back of the jet? Would it cause the plane to lose stability? | Would the pilot need to compensate for the weight shift? | askscience | http://www.reddit.com/r/askscience/comments/2s8r4f/what_would_happen_everyone_on_a_full_passenger/ | {
"a_id": [
"cnnk8vc"
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"score": [
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"text": [
"Yes, the pilot needs to compensate, there are trim options to change the zero point (so the pilot doesn't have to activity do anything). Big commercial planes just have a scale in the wheels, and calculate the trim before takeoff, on smaller plan... | [] | [] | [
[
"https://www.youtube.com/watch?v=U0innA2q_c8"
]
] | |
re5sv | why english shows like the office, skins and being human are remade for the us. | Skins was a shot for shot (more or less) remake, I just don't get the point. Can anyone explain pretty please? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/re5sv/eli5_why_english_shows_like_the_office_skins_and/ | {
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"text": [
"I suspect that A) there might be a licensing issue (although I don't know the technicalities of that) B) there is probably some concern about how well the humor would play with Am... | [] | [] | [
[],
[],
[],
[
"http://en.wikipedia.org/wiki/List_of_British_television_programmes_based_on_American_television_series"
]
] | |
3a36xg | how does proactiv get huge celebrities to endorse their product? | Proactiv commercials feature the most high profile celebrities during their peak. They highlight pics of them as youths with bad acne. Do they just pay them a ton to do so or is there another reason they promote the product? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3a36xg/eli5_how_does_proactiv_get_huge_celebrities_to/ | {
"a_id": [
"cs8ukad"
],
"score": [
5
],
"text": [
"Money. Definitely money. It's a quick gig that takes no more than a few hours, and makes them more money than anyone deserves for that amount of time."
]
} | [] | [] | [
[]
] | |
1wzn82 | How do fiber optic cables work? | So I was wondering how internet connections work and send information? So basically the coax cable (copper) used to be the main broadband medium, but companies like AT & T and Verizon have upgraded to fiber optics.
How does light transfer information through a fiber optic cable?
Does Comcast also have fiber optics? | askscience | http://www.reddit.com/r/askscience/comments/1wzn82/how_do_fiber_optic_cables_work/ | {
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42,
2,
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"text": [
"The principle of total internal reflection means that light will indeed travel all the away along a thin fiber-optic cable, carrying a... | [] | [] | [
[],
[
"http://www.youtube.com/watch?v=0MwMkBET_5I"
],
[],
[],
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"https://www.youtube.com/watch?v=0MwMkBET_5I",
"https://en.wikipedia.org/wiki/Fiber_to_the_x"
],
[
"http://www.eisleynursery.com/"
]
] | |
1zi8ia | How do animals know which animal to fear and which to not? | We see it in the movies all the time, the hero is riding a horse and it (the horse) will suddenly start jumping/acting scared out of no where and will run back because of a tiger hidden in the bushes. I doubt that that horse would have met a tiger before and seen what it can do, otherwise he wouldn't be there in the fi... | askscience | http://www.reddit.com/r/askscience/comments/1zi8ia/how_do_animals_know_which_animal_to_fear_and/ | {
"a_id": [
"cftymm4",
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"score": [
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],
"text": [
"Rottweilers started out as a herding breed so there's the human factor. Total fearlessness around cattle would have been a required trait.\n\nHow do they actually tell the difference? Dogs have a really good sense of smell a... | [] | [] | [
[],
[
"http://www.ncbi.nlm.nih.gov/pubmed/?term=snake+pictures+draw+more+early"
]
] | |
1a7xbx | how does the tap work | I understand that it works because of the pressure differences but how do we get tap water in cities without water towers. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1a7xbx/eli5_how_does_the_tap_work/ | {
"a_id": [
"c8uxhyc",
"c8uyaoo"
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"score": [
3,
3
],
"text": [
"Reservoirs and pumping stations. ",
"This should help.\n\n_URL_0_ \n\n"
]
} | [] | [] | [
[],
[
"http://www.reddit.com/r/explainlikeimfive/comments/1a02vh/eli5_water_towers/"
]
] | |
txlbh | What happens if you microwave mercury? | As the title says | askscience | http://www.reddit.com/r/askscience/comments/txlbh/what_happens_if_you_microwave_mercury/ | {
"a_id": [
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139
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"text": [
"Regardless of the answer to this question **do not attempt to microwave mercury to find out.**",
"BTW, the electrical sparks occur from \"steep\" gradients in the local potential. If you imagine... | [] | [] | [
[],
[],
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"http://www.youtube.com/watch?v=WABthlGTy74",
"http://en.wikipedia.org/wiki/Dielectric_heating",
"http://en.wikipedia.org/wiki/Dielectric_spectroscopy"
]
] | |
5so4e8 | how does dynamic cruise control and accident prevention braking work? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5so4e8/eli5_how_does_dynamic_cruise_control_and_accident/ | {
"a_id": [
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"text": [
"I believe these systems constantly monitor the field of view in front of the car. \nImagine a camera with a green zone amber, and red. \nIf it's in the green zone, the car cruises along as normal, when you get too close to the car it prepares its... | [] | [] | [
[]
] | ||
jnwop | A mirror spinning at the speed of light. | If a mirror was hooked up to an impossibly fast motor and then spun at certain amplitudes of the speed of light. (Probably impossible sure)
What would be seen in the reflection. Would it be the normal reflection if the rotation was exactly the speed of light? What if the rotation was speed and a half? Would you be ups... | askscience | http://www.reddit.com/r/askscience/comments/jnwop/a_mirror_spinning_at_the_speed_of_light/ | {
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"text": [
"Ignoring the whole \"speed of light\" thing, this question did get me wondering about something that maybe someone with more knowledge t... | [] | [] | [
[],
[],
[
"http://i.imgur.com/wR2n1.png"
],
[],
[],
[
"http://i.imgur.com/wR2n1.png"
]
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p0b6p | Is organic food better for you than non-organic food? | Does choosing organic food (grown without pesticides, un-preserved, etc.) have benefits over non-organic eating that are statistically significant, practically significant, and rooted in science? | askscience | http://www.reddit.com/r/askscience/comments/p0b6p/is_organic_food_better_for_you_than_nonorganic/ | {
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"score": [
12,
103,
4,
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3,
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2,
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"text": [
"Brian Dunning of the podcast Skeptoid did a ... | [] | [] | [
[
"http://skeptoid.com/episodes/4019"
],
[
"http://www.dailymail.co.uk/health/article-1042655/Is-frozen-food-fad-future-home-cooking.html",
"http://news.bbc.co.uk/1/hi/8174482.stm"
],
[
"http://news.bbc.co.uk/2/hi/8174482.stm"
],
[],
[
"http://intelligencesquaredus.org/index.php/pa... | |
26ud7f | how do bytes take up "space"? | You know, like how my hard drive only holds 1TB. I must assume that they don't take up physical space, but if that's the case, then what do bytes actually occupy? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/26ud7f/eli5_how_do_bytes_take_up_space/ | {
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"score": [
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2,
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"text": [
"They do take physical space. ",
"On the platter of a hard drive, a byte takes up eight (since it is made up o... | [] | [] | [
[],
[],
[],
[],
[],
[],
[]
] | |
51o9pj | why submarines use nuclear power, but this isnt more commonly used on land? | I understand the fear of meltdown but how is it it isn't an easy fix,and is that the main reason why? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/51o9pj/eli5_why_submarines_use_nuclear_power_but_this/ | {
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"Nuclear power is especially beneficial for submarines because it me... | [] | [] | [
[],
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5lb75v | Where does the yellow river get its water from? | The Yellow River is a huge river, with a significant discharge rate, and essentially its vast waters are what birthed Chinese civilisation, but I cannot figure out why it exists.
Its source is the Tibetan plateau, but the eastern and northern part of the plateau. The plateau is around 30-35 degrees north, which means ... | askscience | https://www.reddit.com/r/askscience/comments/5lb75v/where_does_the_yellow_river_get_its_water_from/ | {
"a_id": [
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2,
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],
"text": [
" > But, as we know from basic geography, rain falls on the windward side of mountains, ... and the leeward side gets nothing.\n\nWell thats wrong for a start. The leeward side may get substantially le... | [] | [] | [
[],
[],
[
"http://d2ouvy59p0dg6k.cloudfront.net/img/p2_81_lg_353804.gif"
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2tesw1 | how does waterboarding not drown someone? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2tesw1/eli5_how_does_waterboarding_not_drown_someone/ | {
"a_id": [
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3
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"text": [
"the victim is tiled back so the water just pools in the nasal cavity, with a towel over the face making it harder to breath. This gives the sensation of dr... | [] | [] | [
[],
[],
[
"http://boards.straightdope.com/sdmb/showthread.php?t=448717"
],
[],
[]
] | ||
2bqbzv | why is it a sports team's responsibility to punish players for their actions off-field? | This was prompted by Ray Rice's disgusting actions - beating his fiancee (now wife) unconscious, etc. Many people are upset that the NFL only suspended him for 2 games. In light of other infractions by other players (like marijuana possession) resulting in full season suspensions, I totally understand the outrage. But ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2bqbzv/eli5_why_is_it_a_sports_teams_responsibility_to/ | {
"a_id": [
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"score": [
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5,
17,
5,
2,
2,
2
],
"text": [
"I agree, and really, suspending him just proves it's just for show. If they didn't want to be associated with c... | [] | [] | [
[],
[],
[],
[],
[],
[],
[]
] | |
5vucag | how does vlc remember where you were last watching? | I've been watching Stargate Atlantis again and I've noticed that VLC remembered at what point I stopped watching, even through computer restarts. I thought it might have been saved in memory but it persisted through computer shutdowns. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5vucag/eli5_how_does_vlc_remember_where_you_were_last/ | {
"a_id": [
"de4yeot"
],
"score": [
2
],
"text": [
"The Mac version uses a dictionary called recentlyPlayedMedia in its preferences file. Each entry contains the file path (URI) and the time offset in seconds."
]
} | [] | [] | [
[]
] | |
7zcqof | How did slaves buy their own freedom? What stopped slave owners from simply confiscating any saved up money? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7zcqof/how_did_slaves_buy_their_own_freedom_what_stopped/ | {
"a_id": [
"dunhj63",
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"score": [
42,
3
],
"text": [
"This is a pretty complicated question to answer generally as slavery varied quite a bit from urban to rural, Upper South to Lower South, etc. (I presume you're asking about American slavery). There are a few key things to r... | [] | [] | [
[],
[
"https://www.reddit.com/r/AskHistorians/comments/68zyc5/slavery_in_ancient_rome_how_did_slaves_earn_money/dh2svnn/?st=j9uf6do0&sh=b0a4a529"
]
] | ||
53d93q | what is that feeling of vulnerability in the early morning about? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/53d93q/eli5_what_is_that_feeling_of_vulnerability_in_the/ | {
"a_id": [
"d7s3hka",
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"score": [
3,
2
],
"text": [
"I don't know exactly what the feeling means, but I used to have it too... It goes away when you have a plan for that morning and immediately get up and start to do it",
"I think I know exactly what you're talking about. ... | [] | [] | [
[],
[]
] | ||
3amzcr | How significant were the Mongols, in spreading the Black Death? | Also, I heard somewhere that the Mongols catapaulted diseased bodies, as a form of "bio terrorism". Is this true, and how significant was it? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3amzcr/how_significant_were_the_mongols_in_spreading_the/ | {
"a_id": [
"csehgn4"
],
"score": [
2
],
"text": [
"To answer your first question, let me give some background information. The Mongols opened up the Silk Road between China and Western Europe. They controlled most of the territory at some point or another and patrolled it. You must remember t... | [] | [] | [
[
"http://wwwnc.cdc.gov/eid/article/8/9/01-0536_article#tnF1",
"http://wwwnc.cdc.gov/eid/article/8/9/01-0536_article#r15"
]
] | |
wx1wv | Which U.S. Supreme Court case of the 19th century most bitterly divided the justices? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/wx1wv/which_us_supreme_court_case_of_the_19th_century/ | {
"a_id": [
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11,
2,
3
],
"text": [
"Obvious tip; as great as /r/AskHistorians is, if you want some breadth and unexpected answers to this question then also try /r/Law \n \n",
"It's difficult to authoritatively say that any one cas... | [] | [] | [
[],
[],
[
"http://cdn.theatlantic.com/static/mt/assets/politics/DPKonevotemajorities.banner.DPK.jpg"
]
] | ||
j3vum | Strange Blinking Light Phenomenon | I was outside tonight with some friends in a dark neighborhood. One of my friends had his black pickup truck parked across the street which has a blue blinking security light flashing on the inside.
I started to notice that when I looked at the truck directly, I could not see the faint blinking light *at all*. Howeve... | askscience | http://www.reddit.com/r/askscience/comments/j3vum/strange_blinking_light_phenomenon/ | {
"a_id": [
"c28x765"
],
"score": [
10
],
"text": [
"Peripheral vision has more rod cells, which are more sensitive to light. They are better at detecting both dim and/or moving (or blinking, in your case) light sources.\n\nThis is presumably an evolutionary advantage where it is more advantageou... | [] | [] | [
[]
] | |
21azj2 | why do cigarettes have so many chemicals in them, why not just tobacco? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/21azj2/eli5_why_do_cigarettes_have_so_many_chemicals_in/ | {
"a_id": [
"cgbbdq8",
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"cgbdexv",
"cgbdm9n",
"cgbdosv",
"cgbdp0k",
"cgbds9q",
"cgbdwve",
"c... | [] | [] | [
[],
[
"http://i.imgur.com/vM9lsmV.png"
],
[],
[
"http://www.cbsnews.com/videos/wigand-60-minutes-most-famous-whistleblower/",
"http://ec.europa.eu/health/scientific_committees/opinions_layman/tobacco/en/index.htm#5"
],
[],
[],
[],
[],
[],
[
"http://vimeo.com/24466769"
],
[]... | ||
3eob2k | do mosquitos know the risk they take when they land on us? | Do they understand that they could die or are they focused only on getting fed? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3eob2k/eli5_do_mosquitos_know_the_risk_they_take_when/ | {
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"text": [
"Mosquitoes in all likelihood don't even have a concept of death, so no. Their brains are incredibly simple so they can't even extrapolate that far into the future. ",
"As far as we can tell,humans ... | [] | [] | [
[],
[],
[]
] | |
3mtzbd | why is it that someone with depression can't just choose to "cheer up"? | I understand depression is physically and mentally draining, but why can't someone just cut out unnecessary actions from their lives and sleep more to make it go away? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3mtzbd/eli5_why_is_it_that_someone_with_depression_cant/ | {
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"When some on is actuall... | [] | [] | [
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] | |
2sl0hv | What did black American organized crime look like in the first half of the 20th century? | Who were the Crips and Bloods of the 20s? Where were they? What did they do? Were they a major threat? Did they even exist? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2sl0hv/what_did_black_american_organized_crime_look_like/ | {
"a_id": [
"cnqosp7"
],
"score": [
4
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"text": [
"Also, what kind of weaponry did they use? How did they get their arsenals?"
]
} | [] | [] | [
[]
] | |
69ulej | if cold symptoms are signs of your body fighting off a virus, why aren't medicines that suppress these symptoms bad for you? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/69ulej/eli5_if_cold_symptoms_are_signs_of_your_body/ | {
"a_id": [
"dh9h9oe",
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"score": [
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11,
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],
"text": [
"Most of the time those symptoms are an *overreaction* from your body. It's a similar reason why your body might show flu symptoms after getting a flu shot. The body goes into full fight mode even whe... | [] | [] | [
[],
[],
[]
] | ||
a5s8u5 | How did armour change with the advent of the firearm? | My knowledge of the early modern period is the best, so it seems to me (at least in Britain) armour suddenly changed from the great metal hulks of knights to pretty much just a cloth uniform, in the case of the redcoats. Obviously I know a few steps (and indeed centuries) are missing here, so I'm curious as to the rela... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/a5s8u5/how_did_armour_change_with_the_advent_of_the/ | {
"a_id": [
"eboz5sm",
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],
"score": [
8,
5,
20
],
"text": [
"_URL_1_\n_URL_0_\n\nIn this thread u/WARitter's responses in these threads may be what you're looking for!",
"In addition to the very excellent answers to this that have been offered, I will look t... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/5nx84v/would_a_17th_century_breastplate_have_stopped_a/",
"https://www.reddit.com/r/AskHistorians/comments/5udybq/how_effective_was_plate_armor_against_musketballs/"
],
[],
[
"https://www.reddit.com/r/AskHistorians/comments/4y2d1k/how_and_why_did_... | |
73b9s2 | - why does a newspaper print a variety of coloured dots in the corners? i understand they're magneta, cyan, black, yellow etc... but why print them? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/73b9s2/eli5_why_does_a_newspaper_print_a_variety_of/ | {
"a_id": [
"dnp0i8q"
],
"score": [
3
],
"text": [
"Without researching, but knowing a few things about manufacturing practices, I can say with reasonable confidence those are quality assurance test marks. I'm assuming they regularly, but randomly, pick sheets out of the mill to test placement, ov... | [] | [] | [
[]
] | ||
1h76p8 | How did sporting events attendance and relevance fair during years when the world was at war? | I was mainly thinking about this while watching Wimbledon today when it was said that for the first time in over 100 years an American didn't make it to round three. Did the British public still go out and support the event? Apart from the Olympics were other major international sporting events cancelled during WWII? ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1h76p8/how_did_sporting_events_attendance_and_relevance/ | {
"a_id": [
"carj3l7",
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],
"text": [
"In addition to the major tennis championships (Australian Open, French Open, Wimbledon; the US Open wasn't suspended), the 1942 and 1946 World Cups were cancelled due to war. In golf, the Masters, the U... | [] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Steagles",
"http://en.wikipedia.org/wiki/Pete_Gray"
]
] | |
631c74 | why do low-quality audio files have a 'grainy' sound to them? | For example, an mp3 at 96k - why does it sound like as if the audio is being rubbed against stand? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/631c74/eli5_why_do_lowquality_audio_files_have_a_grainy/ | {
"a_id": [
"dfrc5cc"
],
"score": [
2
],
"text": [
"The sampling rate of an audio file is how often you're telling a speaker cone to move. \nThe bit depth is how many different positions that speaker cone can have.\n\nBut sound in the real world is continuous. (Analog)\nWe hear in analog but compu... | [] | [] | [
[]
] | |
brjp9q | what exactly is being “improved” when we see games graphically improving with time? | I understand that in a game world, we have different graphical features that come together to produce the visuals we see in a game, like lighting, textures, anti aliasing, etc. What I’m wondering is, when we see a company that comes out with the latest, visually mind blowing game in a series (lets take Uncharted as an... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/brjp9q/eli5_what_exactly_is_being_improved_when_we_see/ | {
"a_id": [
"eoehbhq",
"eoeii9g"
],
"score": [
16,
4
],
"text": [
"Generally speaking\n\n- increases in texture resolution, Instead of using a 100x100 pixel texture you use one thats 500x500 now your model is less blurry, has more detail \n- Increases in polygon count, more polygons allows... | [] | [] | [
[],
[
"https://youtu.be/bPmnETNnGc0"
]
] | |
1okm0p | Is the brain's pain center(s) capable of distinguishing between physical pain and emotional pain? | askscience | http://www.reddit.com/r/askscience/comments/1okm0p/is_the_brains_pain_centers_capable_of/ | {
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"score": [
93,
8,
5,
3,
5,
2
],
"text": [
"A recent paper published in *Molecular Psychiatry* showed that the brain has a similar physiological response to emotional pain (social... | [] | [] | [
[
"http://www.nature.com/mp/journal/vaop/ncurrent/abs/mp201396a.html"
],
[],
[
"http://ajp.psychiatryonline.org/article.aspx?articleID=148163",
"http://psycnet.apa.org/psycinfo/1964-05433-001"
],
[],
[
"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2659949/"
],
[]
] | ||
1pe71h | Aside from Bede, what supports the idea that Anglo-Saxon tribes invaded Britain in the 5th century? | I recently read *Origins of the British: The New Prehistory of Britain* by Stephen Oppenheimer, and I want to get a historical perspective to possibly counterbalance that book.
Based on genetic, linguistic, and other evidence, the author (whose expertise is in genetics) hypothesizes that there was a long-term Germani... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1pe71h/aside_from_bede_what_supports_the_idea_that/ | {
"a_id": [
"cd1jrlg"
],
"score": [
3
],
"text": [
"Bede is not the only source, although he is the best and fullest historical account. We can turn to Bede’s sources, the best of whom would be [Gildas]( _URL_1_). Although Gildas is not writing “history” in the way that Bede envisioned it, and th... | [] | [] | [
[
"http://www.amazon.com/Britain-After-Rome-Fall-Rise/dp/014014823X",
"http://www.fordham.edu/halsall/basis/gildas-full.asp"
]
] | |
62figq | How were very tall people (6'5"/1.9m+) viewed in pre-modern Europe and Asia? Were they subject to ridicule or reverence, or not noticed at all? | Today, height is generally considered a desireable thing, at least in men, and we have our stereotypes about both tall and short people. But given that people were generally shorter in earlier times, were very tall people seen as freaks or otherwise treated differently from the regular folks? Or were they seen as uberm... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/62figq/how_were_very_tall_people_6519m_viewed_in/ | {
"a_id": [
"dfn8acj"
],
"score": [
4
],
"text": [
"One interesting example of this, dating to prehistoric Ireland in c.275 B.C., is the so-called Old Croghan Man. He was a young (20s) and exceptionally tall for the period (6 foot 5 inches-plus, calculated from the span of his arms) man, part of w... | [] | [] | [
[
"https://mikedashhistory.com/2016/09/04/the-bodies-in-the-bogs/",
"http://imgur.com/a/jtluD"
]
] | |
2asgk6 | why do we often find things we did or said when we were younger to be cringe-worthy despite the fact that they were funny at the time? what changed in our brain? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2asgk6/eli5_why_do_we_often_find_things_we_did_or_said/ | {
"a_id": [
"ciybjv0",
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],
"score": [
3,
2
],
"text": [
"If you're talking physically or chemically, I can't help you. Now, if you're talking perceptually, that's a different story. As we age, our perception of what seems to be funny, what seems to be appropriate, as well as inapp... | [] | [] | [
[
"http://i.imgur.com/fy6Z80y.png"
],
[]
] | ||
9ohoa0 | why is it so easy to identify christian rock music (even when you haven't heard any lyrics)? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9ohoa0/eli5_why_is_it_so_easy_to_identify_christian_rock/ | {
"a_id": [
"e7u6x0r",
"e7uc1fe",
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"e7uk881",
"e7uqb41",
"e7uqngq"
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"score": [
35,
2,
3,
2,
6,
2
],
"text": [
"There's probably a few things, but one that I think gets left out is that a lot of rock and metal focuses on various minor keys, scales... | [] | [] | [
[
"https://www.youtube.com/watch?v=JO49yBjQ4no",
"https://www.youtube.com/watch?v=DzGSRI827IQ"
],
[],
[
"https://youtu.be/DvMUEVAJ0Q8",
"https://youtu.be/iBD9LFnOK6k",
"https://youtu.be/8gJHf95Iz4k"
],
[],
[],
[
"https://www.youtube.com/watch?v=mBcqria2wmg&list=RDEMQj1lN6as... |
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