q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
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vii20 | Is there anything that can be done to increase our ability to learn as we get older? | I wasted some time in my late teens and early twenties. Now I am trying to get back into the swing of things. I am eating healthily, studying, and practicing the skills that I want to improve. I realize this would be variable for each person and their learning styles, and also the skill they are trying to learn, but... | askscience | http://www.reddit.com/r/askscience/comments/vii20/is_there_anything_that_can_be_done_to_increase/ | {
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"You might want to look into neuroplasticity. Just by learning to do different activities you can more readily pick up other sources of information. You do have a max capacity, but the brain is able to m... | [] | [] | [
[],
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"http://www.youtube.com/watch?v=UyPrL0cmJRs&feature=player_detailpage#t=3130s"
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2f6bll | how are breathalysers accurate? if i took a shot and immediately blew into it, wouldn't it read my bac somewhere around ~15%? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2f6bll/eli5how_are_breathalysers_accurate_if_i_took_a/ | {
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"The people administering the breathalyzer are instructed not to let the subject be swigging alcohol during the test itself.",
"Yes it would. But then by t... | [] | [] | [
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5b2a5o | what is the dark (or deep) net? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5b2a5o/eli5what_is_the_dark_or_deep_net/ | {
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"The 'deep web' is a name for all the sites on the Internet that are not available through Google or other usual search engines. They block those sites usually because of the illegal activity that occur... | [] | [] | [
[],
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"http://climateviewer.org/3D/",
"http://climateviewer.org/3D/index.html?layersOn=mrm-91"
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ncck3 | why wouldn't indefinite military detentions of us citizens under the ndaa simply be struck down by the supreme court as unconstitutional? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/ncck3/eli5_why_wouldnt_indefinite_military_detentions/ | {
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"I think part of the concern of those opposing th... | [] | [] | [
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4irwi3 | Was inbreeding an issue in non-European nobility? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4irwi3/was_inbreeding_an_issue_in_noneuropean_nobility/ | {
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"Famously in the case of Cleopatra. She had many fewer immediate ancestors than most people: three of her four great-grandfathers were the same person, Ptolemy VIII. The fourth was his son, Ptolemy IX. \n\n"
]
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9hy5sg | how does "supply lead" economics work? | From what I've been told, business get tax cuts that allow them to reinvest more money into R & D allowing them to make better and cheaper products correct?
Better and cheaper products would then lead to price reduction and increased availability to the masses as well as a desired improvement upon existing products. ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9hy5sg/eli5_how_does_supply_lead_economics_work/ | {
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"text": [
"Lower taxes to businesses and the wealthy. They invest in business, open new factories, hire new low income workers to drive the economy. \n\nThere are a couple inherent issues with this. 1: not all of the money from tax ... | [] | [] | [
[],
[]
] | |
4nhwga | In middle school we learn that F=ma, but is force really unrelated to velocity? | [deleted] | askscience | https://www.reddit.com/r/askscience/comments/4nhwga/in_middle_school_we_learn_that_fma_but_is_force/ | {
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" > In middle school we learn that F=ma, but is force really unrelated to velocity?\n\nAcceleration is the rate-of-change (called a *derivative*) of velocity, so force is certainly related to velocity in that equation: the fo... | [] | [] | [
[],
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1vurup | why are there more benefits to having an active life style versus a sedentary one? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1vurup/why_are_there_more_benefits_to_having_an_active/ | {
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"We're built to be active creatures. In nature if you sit down and do nothing all day every day, you end up with a severe case of dead very quickly. ",
"Increased muscle mass/fu... | [] | [] | [
[],
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qmikj | Filling up your Gas tank when its Cool Vs Hot | In my office we are having a debate about this.
I'm maintaining that I was told that if you fill up your gas tank in the morning when it is cool you get More gas than if you were to fill up when its Warm/Hot even if the meter says 1 Gallon.
Is this True and whats the Science behind it? | askscience | http://www.reddit.com/r/askscience/comments/qmikj/filling_up_your_gas_tank_when_its_cool_vs_hot/ | {
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"Ok so Ph.D. chemical eng here who worked 9 years making gasoline. Yes its true that gasoline becomes somewhat more dense as it cools. However, the thing to realize is that gasoline is stored underground in tanks. So the temperature does not mo... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Fuel_dispenser",
"http://www.snopes.com/inboxer/household/gastips.asp"
]
] | |
2wjt5h | Is the outcome of random events determined by previous random events? | If I flip a coin and i get heads, will the chance to get heads next time decrease? Is there anything like the conservation of energy, but for information? If yes, then how relevant is the fact that next time I'll flip the coin is in a few years instead of a few seconds? Is this even science or I'm asking this on the wr... | askscience | http://www.reddit.com/r/askscience/comments/2wjt5h/is_the_outcome_of_random_events_determined_by/ | {
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"In general it is possible for the probability of observing a random event to depend on the observation of a different event at some time in the past. Take a simple example where you have a system that can have two states a, and b. Furthermore let... | [] | [] | [
[]
] | |
3grroo | Are Turks who live in Turkey today genetically mostly Turkicized Greeks, Armenians and Slavs? | Most of them don't look like Turks who live in Central Asia. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3grroo/are_turks_who_live_in_turkey_today_genetically/ | {
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"text": [
"In short, yes. \nThe slightly longer answer is \"and Kurds, and Arabs and Laz and Circassians and Lydians etc.\"\n\nThe Turks assimilated the peoples of Anatolia, some completely, some partially.\n\n[This other question] (_... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/3g9ijs/how_was_anatolia_convertedcleansed_so_easily_by/"
],
[]
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2q04qk | why are some subreddits private? and how do you gain access to these subs? | Just really curious
R.I.P inbox, It was nice knowing you
edit: this thread is my highest rated post + has my highest rated comment, nice one reddit! | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2q04qk/eli5_why_are_some_subreddits_private_and_how_do/ | {
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"c... | [] | [] | [
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"http://www.reddit.com/message/compose?to=%2Fr%2FNightAudit"
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6948ml | how can we "focus" on a specific sound (i.e voice) just by looking at the object (i.e person)? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6948ml/eli5_how_can_we_focus_on_a_specific_sound_ie/ | {
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"text": [
"Good question. I'm a current university student and my professor that I am actually beginning research with is studying auditory neuroscience and this was one of his areas. This ... | [] | [] | [
[],
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"https://www.youtube.com/watch?v=GCtTtKKAhyE",
"https://www.youtube.com/watch?v=G-lN8vWm3m0"
],
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] | ||
93clx7 | why can't we just use mac addreses instead of the ip addreses? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/93clx7/eli5_why_cant_we_just_use_mac_addreses_instead_of/ | {
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"text": [
"A MAC address is unique identifier, but it doesn't tell you anything about *where* a device is. IP addresses are structured, routers can infer from the address which way it needs to send the message to get it towards its de... | [] | [] | [
[],
[]
] | ||
5cpxqv | why does smoking cigarettes make my hangover seem a thousand times worse? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5cpxqv/eli5_why_does_smoking_cigarettes_make_my_hangover/ | {
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"text": [
"You need water and salt to replace what you lost metabolizing alcohol, instead you put nicotine in your system, further dehydrating you and causing your meta... | [] | [] | [
[],
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"https://www.ncbi.nlm.nih.gov/pubmed/21452920"
],
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33161v | why does gas in the united states contain 10% ethanol? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/33161v/eli5_why_does_gas_in_the_united_states_contain_10/ | {
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"text": [
"It was supported by environmentalists under the belief that it could replace oil and be amazing for the environment. Farmers loved it because it created a huge demand for their c... | [] | [] | [
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5gjg06 | since all crop-lands are being overfarmed, and nutrients are being drained, what will happen when all these nutrients are completely drained? or will that point ever come? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5gjg06/eli5since_all_croplands_are_being_overfarmed_and/ | {
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"text": [
"Farmers use a method called \"crop rotation\" to ensure nutrients are replenished in soil.\n\nSome plants provide more nutrients than they take, and some take more than they provide. By rotating these t... | [] | [] | [
[],
[],
[]
] | ||
1bddbd | Is it possible to make a spherical Prince Rupert's drop in a weightless environment? | askscience | http://www.reddit.com/r/askscience/comments/1bddbd/is_it_possible_to_make_a_spherical_prince_ruperts/ | {
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"text": [
"A Prince Rupert's drop has two main components: the fragile tail, and the strong bulb. Both parts are formed due to the tensile/compressive internal forces acting within the glass, and are stronger than their non-tempered equivalents. Any crack... | [] | [] | [
[]
] | ||
4hk3dj | How are smoke particles formed from combustion? | What process takes place? Are there any phase changes or does the heat simply break whatever we're burning into smaller pieces? | askscience | https://www.reddit.com/r/askscience/comments/4hk3dj/how_are_smoke_particles_formed_from_combustion/ | {
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"When you burn a fuel, what you're actually doing is giving it enough energy to react with the oxygen in the air, the products of this reaction are more stable - they don't continue to get oxidised.\n\nFor a basic hydrocarbon the products of compl... | [] | [] | [
[
"http://www.bsquaredfutures.com/pluginfile.php/273/mod_imscp/content/1/lo_4-1-scorm/lo_4-1-scorm/images/bunsen_flames.jpg",
"http://www.noaanews.noaa.gov/stories2011/images/controlledburnuscg.jpg"
]
] | |
4bwrvl | the connection/growth from al-qaeda into isil | As someone who only partially pays attention to foreign affairs, can someone please explain the grow or connection from Al-Qaeda into ISIL. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4bwrvl/eli5_the_connectiongrowth_from_alqaeda_into_isil/ | {
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"ISIL was a separate group from Al Qaeda (the group responsible for 9/11) we used to refer to as \"Al Qaeda In Iraq.\" This was a group that Saddam Hussein kept in check. After th... | [] | [] | [
[],
[],
[],
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"https://www.youtube.com/watch?v=pzmO6RWy1v8"
]
] | |
2p38yu | How do large northern cities get their drinking water when rivers are frozen in winter? | askscience | http://www.reddit.com/r/askscience/comments/2p38yu/how_do_large_northern_cities_get_their_drinking/ | {
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"There are no substantial cities in areas where rivers do completely freeze (this would only occur for small rivers in the extreme northern arctic, if it does occur). On the majority of the globe, even if the surface of a ri... | [] | [] | [
[],
[
"http://what-if.xkcd.com/121/"
]
] | ||
ngwmk | what are torrent trackers? | What exactly are torrent trackers? How do they work, and what is BaconBits? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/ngwmk/eli5_what_are_torrent_trackers/ | {
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"_URL_0_\n\n_URL_1_\n\ntry using the search",
"_URL_0_\n\n_URL_1_\n\ntry using the search"
]
} | [] | [] | [
[
"http://www.reddit.com/r/explainlikeimfive/comments/jpay6/eli5_in_terms_of_piracy_what_are_trackers/",
"http://www.reddit.com/r/explainlikeimfive/comments/j9ux7/seeding_leeching_trackers_someone_please_explain/"
],
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"http://www.reddit.com/r/explainlikeimfive/comments/jpay6/eli5_in_terms_of_piracy... | |
7y3iyc | The Society of Jesus (Jesuits) seem to be highly regarded in terms of their educational efforts. What made their efforts particularly noteworthy compared to those of other religious congregations? | The efforts of the Society of Jesus in the field of education seem to be frequently highlighted as one of their defining characteristics. Why are they noteworthy compared to those taken by other religious congregations? Are there any good books on the subject of Jesuit education? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7y3iyc/the_society_of_jesus_jesuits_seem_to_be_highly/ | {
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"(Disclaimer: my Jesuit wheelhouse is mostly 16th and 17th century, so I can't help much with post-papal-suppression-and-comeback Jesuit education in the 19th/20th centuries.)\n\n\nIn an Early Modern co... | [] | [] | [
[
"http://booksandjournals.brillonline.com/content/journals/10.1163/22141332-00103003",
"http://www.bc.edu/sites/libraries/ratio/ratio1599.pdf",
"http://booksandjournals.brillonline.com/content/journals/10.1163/22141332-00301002"
],
[],
[]
] | |
3v7mn1 | Do different cultures have different taste buds? | Like do people from India have taste buds that are physically different than say, an Americans so they can eat spicier food? | askscience | https://www.reddit.com/r/askscience/comments/3v7mn1/do_different_cultures_have_different_taste_buds/ | {
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"text": [
"There is no difference in tastes buds, but there is a difference in what is considered flavorful. This is determined by what the settlers of the area were able to eat during the early years of development. Things taste bad because your body belie... | [] | [] | [
[]
] | |
12gg2p | Why do I gaze at people's mouths more than their eyes when they are speaking to me? | I've wondered this for quite some time but have never found anything useful online or in journals or books to explain this to me. I have been told on many occasions that I do not look people directly in the eye when we are having a conversation, and when I am conscious of this, I notice that I seem to fixate on their ... | askscience | http://www.reddit.com/r/askscience/comments/12gg2p/why_do_i_gaze_at_peoples_mouths_more_than_their/ | {
"a_id": [
"c6utjft"
],
"score": [
4
],
"text": [
"It could be because you are hard of hearing. I've had horrible hearing since high school and regularly look at people's mouth as they talk to read lips."
]
} | [] | [] | [
[]
] | |
as5pbh | what are carbon credits and how do companies use them to offset their carbon footprint? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/as5pbh/eli5_what_are_carbon_credits_and_how_do_companies/ | {
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"text": [
"One steam plant in NC releases 1000 pounds of pollution per day.\nThe other plant in the same company on the other side of the state releases 300 per day.\n\nThe limit under the carbon exchange is 1000 per day, per plant.\n\... | [] | [] | [
[],
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] | ||
6k9mpn | why are we encouraged to have good posture but then car and airplane seats are shaped in such a way that they do the opposite? | Seats like this are shaped in a concave way that turns my spine into pudding or is just plain uncomfortable. Its always bothered me. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6k9mpn/eli5_why_are_we_encouraged_to_have_good_posture/ | {
"a_id": [
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"text": [
"It's important to know that \"good posture\" is a Victorian esq idea of how you should stand and sit as to look \"proper\". It has nothing to do with what your back wants or needs.\n\nModern research tells us that humans should slouch in chairs, ... | [] | [] | [
[]
] | |
2g5uuz | how can i type correctly on the keyboard without looking but i won't be able to tell you where the keys are? | I can type essays without looking on the keyboard. But when asked where to find a letter on the keyboard, i have no idea | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2g5uuz/eli5how_can_i_type_correctly_on_the_keyboard/ | {
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"text": [
"Muscle memory. Your hands have typed \"e\" so many times that you've sort of \"programmed\" your muscles to reach X inches in Y direction and press down for \"e\". You, consciousl... | [] | [] | [
[],
[],
[],
[]
] | |
9j2yc4 | what are 'fuzzy mathematics' and what are its applications? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9j2yc4/eli5_what_are_fuzzy_mathematics_and_what_are_its/ | {
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"'Fuzzy' is a term used to indicate that you'r... | [] | [] | [
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"https://en.wikipedia.org/wiki/Fuzzy_mathematics"
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"http://www.cs.utep.edu/vladik/2013/tr13-31.pdf"
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1pcq1r | what is corn syrup and why is it in so much of our food? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1pcq1r/eli5_what_is_corn_syrup_and_why_is_it_in_so_much/ | {
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"text": [
"The US government subsidizes corn, so its cheaper to grow tons of it and turn into the syrup then it is to grow and harvest actual su... | [] | [] | [
[],
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"http://en.wikipedia.org/wiki/High-fructose_corn_syrup_and_health"
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"http://drhyman.com/blog/2011/05/13/5-reasons-high-fructose-corn-syrup-will-kill-you/"
],
[
"http://www.learnliberty.org/videos/why-is-there-corn-in-your-coke",
"http://www.learnliberty.org/videos/how... | ||
2uj0kg | how can the government assure people of 'higher wages' when those wages are determined by the employers? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2uj0kg/eli5_how_can_the_government_assure_people_of/ | {
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"co8yk8e"
],
"score": [
2,
2,
3,
2
],
"text": [
"Minimum wage is determined by the law, not by employers.",
"Our wonderful Communist Governments can do magical things.\n\nIn all seriousness, yes you are right a free labor mar... | [] | [] | [
[],
[],
[],
[]
] | ||
2lpw45 | Let's get a more general question on this sub. When did you guys decide you want to study history? What opportunities are now open to you now that you've studied it? | Some more questions:
-Did you get a degree? If so, where?
-What job do you have related to history?
-What books pertaining to your field of study would you recommend?
-What can I do with a history degree?
I'm a junior in high school and have been considering studying history in college for a long time. I have ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2lpw45/lets_get_a_more_general_question_on_this_sub_when/ | {
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"score": [
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"text": [
"I hate to be the ruiner of fun, but I think the ... | [] | [] | [
[],
[],
[
"http://books.google.com/books/about/Nearby_History.html?id=GXqkV1hFfXAC",
"http://www.amazon.com/Mni-Sota-Makoce-Land-Dakota/dp/0873518691"
],
[],
[],
[],
[],
[],
[],
[
"http://www.history.org.uk/resources/public_resource_2914_76.html"
]
] | |
73r4x6 | Is there any theories as to how large the unobservable universe is? If so, what are they? | askscience | https://www.reddit.com/r/askscience/comments/73r4x6/is_there_any_theories_as_to_how_large_the/ | {
"a_id": [
"dnsvoae",
"dnvh78f"
],
"score": [
4,
3
],
"text": [
"Unobservable means more than \"we can't see it\". It means \"we can never travel there or measure it\". So in essence, it doesn't exist in our reality, unless there turns out a way to travel faster than light. If so, we have... | [] | [] | [
[],
[]
] | ||
bf9val | Why was being surrounded so bad in antique battles such as Cannae? | For a siege I can understand it, but in cases such as Cannae my understanding is that the Romans had numerical superiority and that the ‘reason’ why Hannibal won was the trick with his center pulling back and his wings advancing to surround the romans. Apparently it is supposed to be obvious that then the battle is los... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/bf9val/why_was_being_surrounded_so_bad_in_antique/ | {
"a_id": [
"elcjw0x",
"elcnqqa"
],
"score": [
112,
25
],
"text": [
"First, let me give some very broad generalisation that apply to the armies of many ancient societies in Europe and the near east. Obviously, tactics, equipment and formations differed between these societies, but we can o... | [] | [] | [
[],
[
"https://sourcebooks.fordham.edu/ancient/polybius-cannae.asp"
]
] | |
8gziq3 | earthen dams, how do they work and are they different from concrete dams? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8gziq3/eli5_earthen_dams_how_do_they_work_and_are_they/ | {
"a_id": [
"dyftlm5"
],
"score": [
2
],
"text": [
"It depends on the type of earth used. A combination of particle sizes (anywhere from large boulders to clay/silt) serve different structural or \"waterproofing\" purposes.\n\nThe dam may be constructed in layers to intentionally address each need... | [] | [] | [
[]
] | ||
5nwgs6 | why is it so difficult to receive an organ transplant? | With the amount of organ donors (around 50%) why does it take years to receive an organ transplant | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5nwgs6/eli5_why_is_it_so_difficult_to_receive_an_organ/ | {
"a_id": [
"dcettt1",
"dcf3ojp"
],
"score": [
2,
2
],
"text": [
"Organs have to match the recipient otherwise the body can reject the new organ. There are two things to take into consideration and that is blood-type and HLA typing. Blood type is pretty straight forward, ideally the blood ... | [] | [] | [
[],
[]
] | |
89boxs | we're familiar with the concept of limbs falling asleep due to lack of circulation from the pressure on the limb's veins/arteries in relation to bodily position. i want to know how our brain always manages to wake us up before the extremity loses blood flow long enough to die. [serious] | It's happened to most if not all of us. You wake up in the middle of the night, and your arm is asleep. Your hand is numb, you can't lift the "sleeping" arm on its own, and you proceed to smack it back into feeling.
How does your brain know just when to wake you up? Could you theoretically suffer actual limb death, o... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/89boxs/eli5_were_familiar_with_the_concept_of_limbs/ | {
"a_id": [
"dwr8z7t"
],
"score": [
3
],
"text": [
"The tingling feelings is due to nerves, not loss of blood flow. Even if you were to completely restrict *arterial* flow, your limbs still diffuse blood, although much more slowly. \n\nIt takes a lot to kill a limb from lack of blood. Unlike your ... | [] | [] | [
[]
] | |
1t7esx | Can you recommend a good biography about Alexander Hamilton? | I stumbled across [Lin-Manuel Miranda's rap about Alexander Hamilton](_URL_0_), and it really got me interested in learning more about his life.
Thanks in advance! | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1t7esx/can_you_recommend_a_good_biography_about/ | {
"a_id": [
"ce54013",
"ce597rz"
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"score": [
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4
],
"text": [
"For Hamilton's role as Treasury Secretary I'd recommend Ron Chernow's biography. It's not as strong on Hamilton's role as a soldier in my opinion, or the political situation generally, but it really shows Hamilton's brilli... | [] | [
"http://www.youtube.com/watch?v=WNFf7nMIGnE"
] | [
[],
[]
] | |
96gpy9 | If bark is made of cellulose and cellulose is made of glucose, why doesn't it taste sweet? | I was wondering why does bark tastes...well, like bark, if it is made up of glucose. | askscience | https://www.reddit.com/r/askscience/comments/96gpy9/if_bark_is_made_of_cellulose_and_cellulose_is/ | {
"a_id": [
"e423hbl"
],
"score": [
4
],
"text": [
"Cellulose is made of beta glucose, which the human body cannot digest. Starch and carbohydrates, etc, are made of alpha glucose, which tastes sweet and we can digest. \n\nThey’re two very similar but different molecules. The only difference is th... | [] | [] | [
[]
] | |
nxbah | So just how much sand is there? | Carl Sagan is famously quoted as saying
> The total number of stars in the Universe is larger than all the grains of sand on all the beaches of the planet Earth.
If we estimate the mass of each grain of sand to be roughly 10 milligrams (as per [here](_URL_2_), but the estimate is of course very rough) and the nu... | askscience | http://www.reddit.com/r/askscience/comments/nxbah/so_just_how_much_sand_is_there/ | {
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"c3com87",
"c3cotob",
"c3com87",
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"score": [
2,
2,
2,
2
],
"text": [
"An aside, I don't think it's one of those things meant to be taken literally -- it's just a way of imaging astronomical scales. Also, I would guess stars are better defined than sa... | [] | [
"http://blogs.discovermagazine.com/80beats/2010/12/01/the-estimated-number-of-stars-in-the-universe-just-tripled/",
"http://www.wolframalpha.com/input/?i=mass+of+earth+in+kilograms",
"http://hypertextbook.com/facts/2003/MarinaTheodoris.shtml",
"http://www.wolframalpha.com/input/?i=300+sextillion+*+10+milligra... | [
[],
[
"http://www.thenakedscientists.com/forum/index.php?topic=19016.0",
"https://www.google.com/search?sourceid=chrome&ie=UTF-8&q=how+much+sand+is+on+the+earth",
"http://ask.metafilter.com/42777/More-sand-or-stars",
"http://www.hawaii.edu/suremath/jsand.html",
"http://answers.google.c... | |
5y7zz3 | why do phone have a standard charging port but laptops don't? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5y7zz3/eli5_why_do_phone_have_a_standard_charging_port/ | {
"a_id": [
"denu1m6",
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"score": [
4,
2
],
"text": [
"It is worth noting that until fairly recently, phone's tended to have proprietary charging ports that were specific to the phone.\n\nThe reason is that there wasn't a compelling reason to. Until USB-C, there wasn't a univer... | [] | [] | [
[],
[]
] | ||
2amls3 | there is a rooster somewhere in my neighborhood that starts crowing at 3am, way before the sun is up - why? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2amls3/eli5_there_is_a_rooster_somewhere_in_my/ | {
"a_id": [
"ciwnrps",
"ciwp790",
"ciwqjfe",
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],
"score": [
9,
2,
3,
3
],
"text": [
"Roosters run on an internal clock, not the sun. Your neighbor probably has a rooster imported from a different timezone.",
"Check your local municipal code. \n\nRoosters usuall... | [] | [] | [
[],
[],
[],
[]
] | ||
2rtugu | how can small countries be better at certain sports than enormous countries? | It seems to me like the two biggest factors contributing to a city, state or country's sporting success would be resources and talent pool. I've definitely noticed those factors have an impact on sport on a local level, and it certainly benefits countries like the USA and China in the Olympics and Paralympics.
How is ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2rtugu/eli5_how_can_small_countries_be_better_at_certain/ | {
"a_id": [
"cnja9di"
],
"score": [
2
],
"text": [
"A few other factors to consider:\n\n**Culture**\n\nIf a sport has a deep cultural tradition, more people are going to play it and get good at it, and the country will develop an infracture to support it. The US is a large and rich country, but n... | [] | [] | [
[]
] | |
1lin5k | why aren't there different degrees of rape the way there are of assault, theft, and murder? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1lin5k/why_arent_there_different_degrees_of_rape_the_way/ | {
"a_id": [
"cbzlswl"
],
"score": [
2
],
"text": [
"[There *are* different degrees of rape with different punishments](_URL_0_).\n\nRemoving because it's a moot question (the premise was incorrect, so there's nothing to explain)."
]
} | [] | [] | [
[
"http://en.wikipedia.org/wiki/Rape_in_the_United_States#Criminal_Punishment"
]
] | ||
m8k08 | Is the DNA "code" deterministic ? | And if so what are the current problems in "reverse engineering" the code. This may well be a flawed question (My background is CS).
By deterministic I mean, for example, will certain parts always translate into the same biochemical processes given the same "input".
Clarification: I'm mostly interested in the genetic... | askscience | http://www.reddit.com/r/askscience/comments/m8k08/is_the_dna_code_deterministic/ | {
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"c2yz8uj",
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"score": [
2,
2,
2,
2
],
"text": [
"Typically we refer to the genetic code as the set of nucleotide triplets, or codons, which map to the 20ish amino acids. If you are asking 'given the sequence of an mRNA can you pr... | [] | [] | [
[],
[],
[],
[]
] | |
4v2qpw | why do so many websites these days ask for my email address as soon as i get there, trying to sign me up for a newsletter? | This happens a million times more often than it did just a couple of years ago. Most recent one I just clicked on was [this](_URL_0_). No, I don't need a fucking newsletter about class action suits. Thanks.
What's the story, are they just harvesting email addresses for ~~spam~~ marketing purposes? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4v2qpw/eli5_why_do_so_many_websites_these_days_ask_for/ | {
"a_id": [
"d5uxqq2"
],
"score": [
5
],
"text": [
"When you visit a web site, they get to market to you anytime you want them to. When you subscribe to their newsletter, they get to market to you anytime **they** want to."
]
} | [] | [
"https://topclassactions.com/lawsuit-settlements/lawsuit-news/340705-nvidia-settles-graphics-card-false-advertising-class-action/"
] | [
[]
] | |
4s148p | Were paratroopers ever used in the Pacific Campaign of WWII? | I understand that many of the islands were forested, but just wondering if they were ever deployed. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4s148p/were_paratroopers_ever_used_in_the_pacific/ | {
"a_id": [
"d55q7ua",
"d566d78"
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"score": [
16,
3
],
"text": [
"They were in fact used! The Japanese carried out airborne landings in 1942 in support of their invasion of the Dutch East Indies, and American paratroopers made some landings in New Guinea in 1943. The commando units known ... | [] | [] | [
[],
[]
] | |
iw2re | What did Earth look like from Space at the dawn of
life? | It must have looked very different. For one, the atmosphere had a completely different composition. Also, the geography must have been very different as well. What can we infer from the geologic record about the appearance of the Earth so many billions of years ago? | askscience | http://www.reddit.com/r/askscience/comments/iw2re/what_did_earth_look_like_from_space_at_the_dawn/ | {
"a_id": [
"c2738u7",
"c273lfv",
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],
"score": [
8,
6,
2
],
"text": [
"Single cell life came about ~3.8 billion years ago or so, but our grasp of geography during those time is a bit shaky. This is \"just before\" the formation of the first (theoretical) [super continent,... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Vaalbara"
],
[],
[
"http://www.damninteresting.com/how-bacteria-nearly-destroyed-all-life/"
]
] | |
35dwyh | How deep into the Earth could humans drill with modern technology? | The deepest hole ever drilled is some 12km (40 000 ft) deep, but how much deeper could we drill?
Edit: Numbers | askscience | http://www.reddit.com/r/askscience/comments/35dwyh/how_deep_into_the_earth_could_humans_drill_with/ | {
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"score": [
2725,
146,
22,
10,
150,
10,
76,
10,
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"text": [
"Driller here.\... | [] | [] | [
[
"http://www.bp.com/en/global/corporate/about-bp/bp-and-technology/more-recovery/deepwater-frontiers.html"
],
[],
[],
[],
[
"http://en.m.wikipedia.org/wiki/Kola_Superdeep_Borehole"
],
[
"http://en.m.wikipedia.org/wiki/Kola_Superdeep_Borehole"
],
[
"http://discovermagazine.com/2014... | |
2zvkgq | What species of animals went extinct during our lifetimes? | askscience | http://www.reddit.com/r/askscience/comments/2zvkgq/what_species_of_animals_went_extinct_during_our/ | {
"a_id": [
"cpmwnp6",
"cpn32km"
],
"score": [
7,
3
],
"text": [
"A bit long and depressing. I have no doubt I've missed lots. And of course, even if this was an 100% accurate to science list, it would be probably a 75% underestimate, as we have a shockingly poor knowledge of what animals ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Lists_of_extinct_animals"
],
[
"http://www.biologicaldiversity.org/programs/biodiversity/elements_of_biodiversity/extinction_crisis/",
"http://wwf.panda.org/about_our_earth/biodiversity/biodiversity/"
]
] | ||
1al8i3 | I have an alternative theory to the big bang that I want to know how to proceed with. | askscience | http://www.reddit.com/r/askscience/comments/1al8i3/i_have_an_alternative_theory_to_the_big_bang_that/ | {
"a_id": [
"c8yfaq9"
],
"score": [
2
],
"text": [
"I'm not sure I follow your thought, but what would that imply exactly? Can you make any (falsifiable) predictions using your theory that can't be explained by the big bang?\n\nTo be an \"alternative theory\" to the Big Bang your theory needs to e... | [] | [] | [
[]
] | ||
d36i1l | why does vaping create such a large, dense cloud of “smoke” (vapor)? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/d36i1l/eli5_why_does_vaping_create_such_a_large_dense/ | {
"a_id": [
"ezzo10g"
],
"score": [
10
],
"text": [
"Interestingly. There are less particulates in vape vapour, than there are in cigarette smoke. But cigarette smoke has smaller particulates, so it appears a lot less visible. \n\nBecause the vapour is aerosolised (made into tiny droplets in the a... | [] | [] | [
[]
] | ||
sq9z6 | How powerful of an updraft would be needed to save a skydiver without a parachute? | This is [video](_URL_0_) made me think about this. Basically I want to know if this would be possible at terminal velocity. Im pretty sure you would need a turbine jet engine and a miracle to simple get deflected or shot back up into the air.
| askscience | http://www.reddit.com/r/askscience/comments/sq9z6/how_powerful_of_an_updraft_would_be_needed_to/ | {
"a_id": [
"c4g2ggr"
],
"score": [
3
],
"text": [
"Assuming that the person falling can maintain a belly-down position to produce maximum wind resistance, they'll fall at roughly 120mph. In order to reduce speed to a safer 20mph or so, an updraft of about 100mph would be required.\n\nProducing s... | [] | [
"http://www.youtube.com/watch?v=hjhoaMS_OyM"
] | [
[]
] | |
4dblvj | to the baseball experts, why do some say that it's better for the first baseman to be lefthanded? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4dblvj/eli5_to_the_baseball_experts_why_do_some_say_that/ | {
"a_id": [
"d1pfmzf",
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"d1pgbib",
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46,
4,
6,
10,
2
],
"text": [
"Lefties wear their gloves on their right hand. When you're standing on first base facing home plate, your right hand is on the second base side, and your le... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
1swqh8 | Is the chance of winning the lottery on a ticket with in-order numbers the same as random numbers? | Sorry if the title is confusing, I couldn't find a better way to phrase it.
If 6 balls are pulled out of the lottery, is the chance of winning the same for increasing numbers in order and randomized numbers?
For example:
You pick your numbers in order to be: 1,2,3,4,5,6
or: 11,12,13,14,15,16
Or you pick random numbe... | askscience | http://www.reddit.com/r/askscience/comments/1swqh8/is_the_chance_of_winning_the_lottery_on_a_ticket/ | {
"a_id": [
"ce20kjq",
"ce20lhy"
],
"score": [
16,
51
],
"text": [
"Any set of numbers has the same chance of being drawn, but having randomly chosen numbers could be advantageous if you have a winning ticket. Depending on which lottery you are playing, the total prize money may well be sp... | [] | [] | [
[],
[]
] | |
292y7k | How exactly did European slave traders capture black people in Africa? | It would seem to me fairly hard to capture Africans in their native land, especially once word spread that Europeans were enslaving them. How did the natives react once the European intentions were made clear? Did slave traders have an army of sorts that just roamed the land capturing people from any settlement they ha... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/292y7k/how_exactly_did_european_slave_traders_capture/ | {
"a_id": [
"cih0kpu"
],
"score": [
5
],
"text": [
"African tribes were often at odds with each other and the practice of slavery was practiced in Africa (like in many other places and times). Surviving members of defeated tribes were often taken as slaves of the victorious tribe. It was from thes... | [] | [] | [
[]
] | |
9fntaw | why non-human mammals stop drinking mother's milk. | I realize that humans drink mother's milk as infants. I also realize that we make a transfer, at some point, to drinking cow's milk. I dont want to get into why we shouldn't be drinking cow's milk. My question is: why do other mammals stop feeding from the mother's teet at a certain point in their physical developm... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9fntaw/eli5_why_nonhuman_mammals_stop_drinking_mothers/ | {
"a_id": [
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"e5xxyhe",
"e5xz5l5"
],
"score": [
7,
3,
4,
23,
5,
3
],
"text": [
"You guessed it. Almost all other mammals become lactose intolerant at a point. That means lactose intolerant people are the \"normal\" ... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | |
61gy32 | why does it cost so much to protect the potus on a daily basis? other than salaries, where does the money go? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/61gy32/eli5_why_does_it_cost_so_much_to_protect_the/ | {
"a_id": [
"dfefuvc",
"dfefvrq",
"dfenr1p",
"dfex7pl"
],
"score": [
2,
2,
2,
3
],
"text": [
"There isn't just 5 guys as secret service. The secret service employs over 6000 people, all who are at the top of their fields. You're not going to have any entry level secret... | [] | [] | [
[],
[],
[
"http://www.oregonlive.com/politics/index.ssf/2015/05/13_ways_secret_service_agents.html"
],
[]
] | ||
23z38b | Who was positioned on the frontlines of the battlefield in the medieval ages (best/skilled soldiers)? What were the survival rates for said soldiers? | I was discussing with a friend how courageous or scared soldiers would be at the front lines of the battlefield and a question arose where we wanted to know whom was chosen to be positioned on the front lines and what the survival rates were. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/23z38b/who_was_positioned_on_the_frontlines_of_the/ | {
"a_id": [
"ch28lk1"
],
"score": [
2
],
"text": [
"It really depends on what era you're talking about, as well as what culture. Different leaders from different cultures placed drastically different importance on different sections of troops during battles. Was there a specific time period and ar... | [] | [] | [
[]
] | |
2q9c9g | Hello historians! Very unique flintlock rifle needs a story to go with its awesomeness. Can you help? | I recently acquired this flintlock rifle at auction without knowing much about guns. My wife thinks I'm crazy but I think these are awesome pieces of history. I'm most interested in the serpent design on the flintlock. I have not seen anything like that anywhere else in my online research. The stock also seems a unique... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2q9c9g/hello_historians_very_unique_flintlock_rifle/ | {
"a_id": [
"cn48us6"
],
"score": [
3
],
"text": [
"You might have better luck in /r/guns or /r/whatisthisthing, but not many people will be able to help you unless you get photos of the maker's marks and armoury marks (if any) on the weapon itself."
]
} | [] | [
"http://i.imgur.com/oZ3gl0L.png",
"http://i.imgur.com/i2zbeC4.png"
] | [
[]
] | |
2ha2s6 | why do dogs randomly bark at people when they pass by? | Is it to get the attention of the owner that someone is outside? The people outside aren't threatening them, so why bark at people to scare them? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ha2s6/eli5_why_do_dogs_randomly_bark_at_people_when/ | {
"a_id": [
"ckqsgwi",
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"text": [
"They are threatening them. By passing near or through an area that the dog considers its territory that is a threat. ",
"Dogs bark for lots of reasons, so there's no one answer. Sometimes it's a threat. Sometimes it's ... | [] | [] | [
[],
[]
] | |
83559s | Is there such a thing as a "fourth generation quarks or leptons?" | Are they possible to make and just have extremely short lifespans or is the third generation of top quarks, bottom quarks, taus and tau neutrinos has heavy as quarks and leptons can possibly get? | askscience | https://www.reddit.com/r/askscience/comments/83559s/is_there_such_a_thing_as_a_fourth_generation/ | {
"a_id": [
"dvfdxsx",
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"score": [
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"text": [
"We have no experimental evidence for them, but there are some searches for them (a search from [CMS at CERN](_URL_0_)).\n\nIt is not something that I here about a lot and I have ye... | [] | [] | [
[
"https://arxiv.org/abs/1209.0471"
],
[],
[
"https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/CombinedSummaryPlots/EXOTICS/ATLAS_VLQ_TT_step4/ATLAS_VLQ_TT_step4.png",
"https://arxiv.org/abs/1204.1252"
],
[]
] | |
1y9n1a | why does disney seem to have a movie formula that involves the death or absents of one or both parents and why has this formula stuck through all but a few films? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1y9n1a/eli5_why_does_disney_seem_to_have_a_movie_formula/ | {
"a_id": [
"cfij8rk",
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"score": [
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"text": [
"This is a trope that spans much more than just Disney films",
"This is a common trope in literature and film. It is an effective way to make an independent character who cannot simply rely on his fa... | [] | [] | [
[],
[],
[]
] | ||
347s1r | how do we know a country has gotten rid of weapons (nuclear or chemical) as russia has just claimed? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/347s1r/eli5_how_do_we_know_a_country_has_gotten_rid_of/ | {
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"cqs1tjn",
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2,
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"text": [
"The UN and some NGOs send groups of people to verify the absence of nuclear weapons in armories, to witness that nuclear centrals are only for energetic purpose.",
"The SALT treaties included provis... | [] | [] | [
[],
[],
[]
] | ||
5oocsf | can a singularity move through space? | If so, does it, and what is required to move it? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5oocsf/eli5_can_a_singularity_move_through_space/ | {
"a_id": [
"dckufmf"
],
"score": [
3
],
"text": [
"Everything in space is in motion relative to _something_. So it is moving, constantly, in some fashion. Unless you ment something else?"
]
} | [] | [] | [
[]
] | |
1rt40t | During the Middle Ages and the Renaissance, how was the surname of illegitimate children determined? | Also, what would life be like for a king's or noblemen's bastard, whether they were born of the peasantry or another member of the peerage? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1rt40t/during_the_middle_ages_and_the_renaissance_how/ | {
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"cdqqmzy",
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18,
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"text": [
"The term \"peerage\" relates principally to the English (edit: and Scottish) nobility; is your interest focused on that realm, or more broadly?",
"Answers to your questions could vary greatly based... | [] | [] | [
[],
[],
[]
] | |
2bsdt0 | What would the effects on global warming be if all artificial CO2 emissions ended tomorrow? | askscience | http://www.reddit.com/r/askscience/comments/2bsdt0/what_would_the_effects_on_global_warming_be_if/ | {
"a_id": [
"cj8k7md"
],
"score": [
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"text": [
"Hello, paleoclimatologist here! From a longer-term geological perspective, we are currently living in an [interglacial](_URL_5_) period (or warm period in between glacial worlds) for the [last 10,000 years](_URL_3_). Studies suggest that if we ha... | [] | [] | [
[
"http://adsabs.harvard.edu/abs/2013AGUFMPP22A..04Z",
"http://www.nature.com/ngeo/journal/v5/n2/full/ngeo1358.html",
"http://onlinelibrary.wiley.com/doi/10.1111/j.1539-6924.2012.01880.x/full",
"http://en.wikipedia.org/wiki/Holocene",
"http://doi.wiley.com/10.1029/2004GC000891",
"http://en.w... | ||
1qog8j | What military innovations allowed Napoleon to easily defeat military-obsessed Prussia? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1qog8j/what_military_innovations_allowed_napoleon_to/ | {
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"text": [
"Somebody will give a better answer, but I would suggest reading Clausewitz's [On War](_URL_0_). It was written as a response to Napoleon and what the Prussian military would need to do to win future ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/On_War"
],
[],
[]
] | ||
2knxi8 | if the u.s. government is supposed to separate church and state, why are politicians allowed to publicly state their religious views and act on those views while making policies or voting in congress? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2knxi8/eli5_if_the_us_government_is_supposed_to_separate/ | {
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"cln2k6m",
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"cln5tug",
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"cln5x48",
"cln661h",
"cln66k4",
"cln67tx",
"c... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[
"http://www.archives.gov/exhibits/charters/constitution_transcript.html",
"http://en.wikipedia.org/wiki/No_Religious_Test_Clause"
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[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
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[],
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[... | ||
5aghb6 | why do statistically heavy set people have deeper voices than more average sized people? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5aghb6/eli5_why_do_statistically_heavy_set_people_have/ | {
"a_id": [
"d9gbi4z"
],
"score": [
5
],
"text": [
"Larger people tend to have have longer vocal cords. Longer vocal cords vibrate at a lower frequency. The lower the frequency you vibrate your vocal cords at, the deeper your voice is."
]
} | [] | [] | [
[]
] | |
5y3zjk | why cant anything have an entropy of 0 j/k? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5y3zjk/eli5why_cant_anything_have_an_entropy_of_0_jk/ | {
"a_id": [
"demzj2v"
],
"score": [
2
],
"text": [
"Technically it is possible, it's just that if a molecule has no energy, it will be a negligible amount of time before it has energy again, even if it is only like 0.001 k"
]
} | [] | [] | [
[]
] | ||
codsc3 | why can't someone produce cheap medicine like insulin? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/codsc3/eli5_why_cant_someone_produce_cheap_medicine_like/ | {
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"text": [
"The insulins that were originally patented were incredibly simple compared to today's insulin analogs, and are in fact still available for relatively low prices, without a prescrip... | [] | [] | [
[],
[
"https://www.npr.org/sections/health-shots/2015/03/19/393856788/why-is-u-s-insulin-so-expensive"
],
[],
[]
] | ||
ub720 | How far back in time would we have to go for the earth to be uninhabitable for humans? | I know the earth was uninhabitable for certain periods of time in the not so distance past (85 million years ago for example), but if we were to drop a human off in a time period, how far back could we go before he couldn't survive? | askscience | http://www.reddit.com/r/askscience/comments/ub720/how_far_back_in_time_would_we_have_to_go_for_the/ | {
"a_id": [
"c4txv8c"
],
"score": [
4
],
"text": [
"Just about a billion years, as the oxygen levels have changed quite rapidly in the past few years. Humans need a minimum oxygen content, other factors can also come into play. The oxygen example was immediate. There was a period of time where hum... | [] | [] | [
[]
] | |
3n9flr | how will new gun laws prevent mass shootings? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3n9flr/eli5_how_will_new_gun_laws_prevent_mass_shootings/ | {
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8,
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4,
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4,
6,
3,
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... | [] | [] | [
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"http://articles.chicagotribune.com/2013-02-17/news/ct-met-guns-gangs-20130217_1_levaine-tanksley-gun-laws-gun-trafficker"
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[],
[],
[],
[],
[],
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[],
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"http://www.theguardian.com/us-news/2015/jun/09/the-counted-police-killings-us-vs-other-countries"
],
[],
[],
[],
[]
] | ||
afl2xc | How do space agencies prevent germs and bacteria on their rovers (Mars Rover) from contaminating the planet they visit? | Or do they even try and prevent it? Am I correct in thinking that the scientists have something in place to stop living organisms/bacteria contaminating Mars when objects come in contact with the planet? If so how is it done? | askscience | https://www.reddit.com/r/askscience/comments/afl2xc/how_do_space_agencies_prevent_germs_and_bacteria/ | {
"a_id": [
"edzwjfe",
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"score": [
14,
7,
4
],
"text": [
"They clean and sterilize the object before it's launched. This eliminates any food for bacteria or microbes. \n\nAlso, space is incredibly hostile to life. Several months of cosmic rays, unfiltered UV ... | [] | [] | [
[],
[],
[]
] | |
bjpl5u | Were only blacks discriminated against during segregation? | [deleted] | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/bjpl5u/were_only_blacks_discriminated_against_during/ | {
"a_id": [
"emawlfn"
],
"score": [
2
],
"text": [
"No, but it depends on where you live. /u/Dubstripsquads gave a [masterful answer](_URL_1_) with an extensive bibliography.\n\nI would also look at the answers [here](_URL_0_) by /u/Kugelfang42 and [here](_URL_2_) by /u/grumblingduke."
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/5n57kp/its_1935_im_mexican_and_i_walk_into_a_segregated/",
"https://www.reddit.com/r/AskHistorians/comments/3ix499/how_were_nonblack_minorities_treated_in_the_jim/",
"https://www.reddit.com/r/AskHistorians/comments/a8iej8/question_on_us_segregation_laws... | |
470vpw | How can we know how names like Caesar or Cicero were really pronounced like? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/470vpw/how_can_we_know_how_names_like_caesar_or_cicero/ | {
"a_id": [
"d09oy43"
],
"score": [
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"text": [
"Hi! Questions on pronunciation of Latin and other ancient languages come up here fairly often; I'll just link this classic comment, which breaks down Caesar letter by letter, with references:\n\n* /u/thatfool in [Original pronunciation of \"Ceas... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/146zb6/original_pronunciation_of_ceasar/c7agmyo"
]
] | ||
m44bb | Would helmets or other protective gear be able to reduce airplane casualties? | Obviously not expecting to reduce them to zero, but every little helps. Since there are plane crashes that have survivors, that means that more people may have survived if they were better protected | askscience | http://www.reddit.com/r/askscience/comments/m44bb/would_helmets_or_other_protective_gear_be_able_to/ | {
"a_id": [
"c2xy3qb",
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"score": [
2,
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"text": [
"Probably not much, in a mid-air collision or breakup there would be no survivors at all, but if it crashed during landing or takeoff a helmet could protect you enough to make the difference between survival and not. If you'r... | [] | [] | [
[],
[]
] | |
217kgs | why are there no high profile painters/sculptors (michelangelo, da vinci) or artistic "movements" anymore? | Painting and sculpting seem to be a ancient art. I know people still do it, but how many paintings and sculptures come out nowadays that are heralded like the works of Da Vinci or Michelangelo. Also I'm sure there are still "movements" going on but nothing I can see being studied and documented the way movements like ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/217kgs/eli5_why_are_there_no_high_profile/ | {
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5,
2,
2,
7,
2
],
"text": [
"Most of those 'high profile' artists were considered talented professionals in their day. After their death, their works became increasingly regarded.\n\nTher... | [] | [] | [
[],
[],
[],
[],
[]
] | |
9egeuj | Does prosopagnosia/face blindness also affect how people see ‘faces’ on animals or is it restricted to humans? | askscience | https://www.reddit.com/r/askscience/comments/9egeuj/does_prosopagnosiaface_blindness_also_affect_how/ | {
"a_id": [
"e5pnmqe"
],
"score": [
3
],
"text": [
"I'll try my best at answering this:\n\nFirstly, we know that certain areas of the brain such as the fusiform face area (FFA) are generally linked to face-specific recognition. The FFA doesn't really tend to light up in fMRI to anything other than... | [] | [] | [
[
"http://www.pnas.org/content/111/14/5123",
"https://www.ncbi.nlm.nih.gov/pubmed/8446761",
"https://www.sciencedirect.com/science/article/pii/S0010945269800274"
]
] | ||
gnk53 | When physicians talk about 'information', what do they mean? | I have heard it said that "information cannot be lost in a black hole" and a hypothesis that in the beginning there was only information. What is meant by information in this context? | askscience | http://www.reddit.com/r/askscience/comments/gnk53/when_physicians_talk_about_information_what_do/ | {
"a_id": [
"c1ovk62",
"c1ovqk9"
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"score": [
6,
5
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"text": [
"I think an easy way to think of it is to realize that a black hole is not an electron. Nor a proton. Nor an atom. It's not matter in any conventional sense of the word. It has the energy of mass, often the energy of rotation... | [] | [] | [
[],
[]
] | |
6l0qlk | why is getting comfortable (slouching, laying in awkward positions, sinking in your chair, etc.) so bad for you but so comfortable at the same time? | Usually having perfect posture for most people is hard because it's uncomfortable. Shouldn't it be the other way around? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6l0qlk/eli5why_is_getting_comfortable_slouching_laying/ | {
"a_id": [
"djq6t57"
],
"score": [
2
],
"text": [
"Because sitting in the same position (upright) makes you sore after a while. I work in an office and do this a lot and it helps your back a lot."
]
} | [] | [] | [
[]
] | |
lxgqz | Is it possible that there is a human somewhere with whom I don't share a single ancestor, going all the way back to the first single-celled organisms? | I'm assuming that one single-celled organism isn't the ancestor for everyone on earth. Surely a few developed around the same time across the planet, then continued into evolving into things until bam, here I am. Could the process have occurred long enough to produce someone I'm not even slightly related to? | askscience | http://www.reddit.com/r/askscience/comments/lxgqz/is_it_possible_that_there_is_a_human_somewhere/ | {
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"score": [
10,
2,
5,
10,
2,
5
],
"text": [
"No. Every human, in fact every living thing on Earth, is literally your cousin. One single-celled organism is the ancestor for everyon... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Most_recent_common_ancestor#MRCA_of_all_living_humans"
],
[],
[],
[
"http://en.wikipedia.org/wiki/Most_recent_common_ancestor#MRCA_of_all_living_humans"
],
[],
[]
] | |
206vza | how does this not work? (picture in description) | Sorry for the terrible vagueness of the question
I've drawn this to help explain:
_URL_0_
brown is the floor, red is a normal rope
Why is is that if I were to sit on a rope and pull up on either end, I will remain on the ground, but if I sit on the same rope and someone comes along and pulls up on either end, I wi... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/206vza/eli5_how_does_this_not_work_picture_in_description/ | {
"a_id": [
"cg0bzbq"
],
"score": [
2
],
"text": [
"because the force you are exerting upward derives from within yourself. If you are up in the air, you have nothing to push down against to support yourself. Someone else, who remains standing on the ground, has something to push up against to def... | [] | [
"http://i.imgur.com/LEFSNsc.jpg"
] | [
[]
] | |
3jovi8 | Is it possible for a body of water (lake, pond, etc) to be naturally carbonated? | askscience | https://www.reddit.com/r/askscience/comments/3jovi8/is_it_possible_for_a_body_of_water_lake_pond_etc/ | {
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"score": [
4,
227,
31,
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"text": [
"in what capacity?\n\ncarbonation is dissolved CO2.\n\nTo that end, any water with life in it will have dissolv... | [] | [] | [
[],
[],
[
"https://en.wikipedia.org/wiki/Pamukkale"
],
[],
[],
[
"https://en.wikipedia.org/wiki/Lake_nyos"
],
[
"https://books.google.ca/books?id=fc2oTUfidvgC&pg=PA45&dq=secrets+source+fox&hl=en&ei=0Z0_TL7lMpCEvAPw7vDiCA&sa=X&oi=book_result&ct=result#v=onepage... | ||
18ovyn | How common was ritualistic suicide in Japanese society? | I'm quite the amateur historian and have read many accounts of seppuku in the 47 Ronin, a biography of Miyamoto Musashi, and some less than accurate movies. Was it typically reserved for high ranking males who brought "dishonor" upon themselves or are we just following stereotypes? Are there any figures as to how many ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/18ovyn/how_common_was_ritualistic_suicide_in_japanese/ | {
"a_id": [
"c8gshhc"
],
"score": [
34
],
"text": [
"As usual in Japanese or any other country's history, this is dependent of the era.\n\nFirst, let us note that ritualised suicide wasn't something that ordinary Japanese farmers usually did. It was a custom of the nobility and the warriors. At no... | [] | [] | [
[
"http://books.google.se/books?id=riI6iDtJGboC&lpg=PA25&dq=seppuku&hl=sv&pg=PA22#v=onepage&q&f=false"
]
] | |
1720yr | asteroids mining will begin eventually, what will be the consequence if earth quickly gains weight? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1720yr/eli5_asteroids_mining_will_begin_eventually_what/ | {
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"score": [
112,
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"text": [
"You have to realize how *large* earth actually is. The statistic that gets this across th... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[]
] | ||
72uuc6 | what do 'good acoustics' in a music venue/theatre actually mean or sound like? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/72uuc6/eli5_what_do_good_acoustics_in_a_music/ | {
"a_id": [
"dnlfcrw",
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"score": [
2,
2
],
"text": [
"This typically means that a performer on stage can be heard clearly from any seat in the house. \n\nThis is accomplished by carefully planning the construction of the venue by choosing the proper materials and the proper siz... | [] | [] | [
[],
[
"http://hyperphysics.phy-astr.gsu.edu/hbase/Acoustic/imgaco/rt2.gif"
]
] | ||
2k9vvo | why do you multiply 1/3 to height x area to get the volume of a pyramid? | It's been bugging me since back when I learned it and it's killing me now that I think back on it. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2k9vvo/eli5_why_do_you_multiply_13_to_height_x_area_to/ | {
"a_id": [
"clj9t9l"
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"score": [
4
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"text": [
"the pyramid has the same volume with the point in the center as it would if you pushed the point into one of the corners (so that the pyramid has two vertical sides) and three of those fit together to form a rectangular cuboid whose volume is bas... | [] | [] | [
[
"http://korthalsaltes.com/model.php?name_en=three+pyramids+that+form+a+cube"
]
] | |
1q2edl | why we don't paint on our airplanes like we did during wwii | I recently saw some WWII planes and I saw the unique, pin up, and fighter style designs. What changed from when that was okay do to, and now it doesn't?
EDIT: I realized I used "us" to refer to the Americans, I forgot that Reddit is a global website, my apologizes. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1q2edl/eli5_why_we_dont_paint_on_our_airplanes_like_we/ | {
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"score": [
4,
13,
5,
7
],
"text": [
"It's not considered politically prudent to appear to be wanting to go to war or enjoying it.",
"For one thing, some modern combat aircraft are designed for reduced radar cross... | [] | [] | [
[],
[],
[
"http://i.imgur.com/h6JmVOO.jpg"
],
[]
] | |
24ejur | Is "Dark Ages" also a misnomer for the Greek Dark Ages? | Knowing that no serious historian uses "dark ages" to describe Medieval Europe, I always have trouble when I see the Greek Dark Ages. Is it commonly accepted that this is an accurate phrase for describing the period? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/24ejur/is_dark_ages_also_a_misnomer_for_the_greek_dark/ | {
"a_id": [
"ch6cjdx"
],
"score": [
7
],
"text": [
"It is contested to some extent as well, but it's generally a good deal more accepted because it's not nearly as much of a misnomer. For one thing, the geographical tag makes it much, much less misleading than in the case of the aftermath of the w... | [] | [] | [
[]
] | |
8angrj | up until about ten years ago, people in photos taken with flash almost always came out with red eyes, but now you never see people with red eyes in pictures - what happened? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8angrj/eli5_up_until_about_ten_years_ago_people_in/ | {
"a_id": [
"dx011d9",
"dx01fvt",
"dx01org",
"dx01p41"
],
"score": [
2,
2,
14,
5
],
"text": [
"The red-eye effect is caused by the camera flash reflecting off the back of the subject's eyes. Newer cameras and phones have special lights and sensors that prevent this.",
"... | [] | [] | [
[],
[],
[],
[]
] | ||
24azfc | how do we get a specific sickness more than once? wouldn't we build up an immunity after the first time we got it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/24azfc/eli5_how_do_we_get_a_specific_sickness_more_than/ | {
"a_id": [
"ch5bjtt",
"ch5bkgr"
],
"score": [
2,
2
],
"text": [
"We generally *do* build up an immunity. But many things that we tend to think of as \"a specific sickness\" aren't actually specific. For instance, there are hundreds of different cold viruses, and they keep mutating every... | [] | [] | [
[],
[]
] | ||
itql2 | Can someone explain this article for me? Mainly if it's complete crock or not? | Scientific America just released ["Nuclear Fission Confirmed as Source of More than Half of Earth's Heat"](_URL_0_) and while it looks solid, I'm no where near qualified to determine if it's all just a bunch of methodological mistakes or ill-determined conclusions. | askscience | http://www.reddit.com/r/askscience/comments/itql2/can_someone_explain_this_article_for_me_mainly_if/ | {
"a_id": [
"c26k8r9",
"c26kb05",
"c26l1nm",
"c26l1q8"
],
"score": [
3,
3,
2,
2
],
"text": [
"This isn't my field, but the Nature family of journals are quite reputable. Suggesting it's \"all just a bunch of methodological mistakes or ill-determined conclusions\" is a bit ... | [] | [
"http://www.scientificamerican.com/blog/post.cfm?id=nuclear-fission-confirmed-as-source-2011-07-18"
] | [
[],
[],
[],
[]
] | |
324cdr | how come any time you see depictions of early humans/cavemen, they're never shown as having long beards, even though they didn't have any razors at the time? | I know they had rudimentary stone tools, but i wouldn't think anything capable of giving a close shave...or that that would even be something they thought of doing. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/324cdr/eli5_how_come_any_time_you_see_depictions_of/ | {
"a_id": [
"cq7q0of",
"cq7q3m3",
"cq7qbij",
"cq7thli",
"cq7uvka",
"cq7uyr5",
"cq817k6",
"cq81yhu",
"cq82ukd",
"cq88iiy",
"cq8940w",
"cq89e9r"
],
"score": [
2,
14,
6,
91,
6,
19,
2,
4,
16,
4,
2,
2
],
"text": [
"... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Obsidian"
],
[],
[],
[],
[
"http://nativeamericans.mrdonn.org/northwest/longhouses.html",
"http://acanadiannaturalist.net/2012/11/06/woman-the-hunter/",
"https://youtu.be/QWSTE6WLB0Y",
"http://en.wikipedia.org/wiki/Caveman",
"http://coursesa.ma... | |
349ci7 | if at the start of our life we have just a few cells with exactly the same dna, and those cells divide to make exactly the same cells with exactly the same dna inside them, how do we end up with complex bodies comprising vastly different kinds of cells? (nerve cells, muscle cells etc.)? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/349ci7/eli5_if_at_the_start_of_our_life_we_have_just_a/ | {
"a_id": [
"cqsgtr1",
"cqsi4zm",
"cqsi6mo"
],
"score": [
2,
2,
3
],
"text": [
"To simplify a complicated process that I don't fully understand:\n\nAs we develop, our bodies create hormones and proteins, which tell cells in certain parts of our body to take on certain roles. As emb... | [] | [] | [
[],
[],
[]
] | ||
20e21i | why is the origin of the basque language, [out of southern france/ northern spain], so hard to identify? | There have been various suggestions however no definitive root of this language and the sound of this language [To me a Japanesey-Spanish] sounds intriguing... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/20e21i/eli5_why_is_the_origin_of_the_basque_language_out/ | {
"a_id": [
"cg2dlqp"
],
"score": [
2
],
"text": [
"I'm not sure what you're actually asking.\n\nBasque appears to be a unique language completely unrelated to any other still-existing European language. Linguists therefore suspect it's derived from one of the older, now lost, proto-Indo-European ... | [] | [] | [
[]
] | |
38byme | why do directors wear berets? | I've seen this on multiple directors in multiple countries. Why is this happening? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/38byme/eli5_why_do_directors_wear_berets/ | {
"a_id": [
"crtw7kn",
"crtwuvb"
],
"score": [
2,
2
],
"text": [
"Partly it is down to it almost being part of the uniform, part of it is practicality. You need something that will keep the rain and sun off, won't blow away in the wind and won't make any noise on set a beret or cap general... | [] | [] | [
[],
[]
] | |
3sfmby | Was the battle axe really a predominantly "viking" or "Norse" or "Scandinavian" weapon as pop culture portrays it, or was it more widespread? | As a Jewish axe man (guitar of course) myself, I'd like to think I don't have to have flowing blonde locks to call myself one. But seriously, I'm interested in the history of the axe as a weapon. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3sfmby/was_the_battle_axe_really_a_predominantly_viking/ | {
"a_id": [
"cwww7ob",
"cwwx2oe"
],
"score": [
2,
15
],
"text": [
"_URL_1_\n\nHungarian source, but I can translate if someone wishes to know the contents.\n\nBasically what it says that first Hungarians to arrive in the Carpathian basin had used an axe called \"fokos\", which is basically... | [] | [] | [
[
"http://turania.hu/catalog/images/fokos_11_n.JPG",
"http://mek.oszk.hu/00000/00057/html/08.htm#9"
],
[
"http://media.liveauctiongroup.net/i/13557/13838551_1.jpg?v=8CF59AD9CFD75C0",
"https://upload.wikimedia.org/wikipedia/commons/0/04/CMOC_Treasures_of_Ancient_China_exhibit_-_bronze_battle_axe.... | |
5w71gm | would someone with high blood pressure benefit from controlled blood loss? would blood pressure decrease enough to be worth it? | I donate blood often, and I don't see any noticeable effects from losing a pint of blood every eight weeks or so. How much does blood pressure go down after a donation, and is it worth donating just for that reason? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5w71gm/eli5_would_someone_with_high_blood_pressure/ | {
"a_id": [
"de7z1cr"
],
"score": [
5
],
"text": [
"Blood pressure is not about the static pressure of a certain amount in a container. It's about the effort needed to drive it round your blood vessels like through the pipes of a central heating system where near-blockages are bad."
]
} | [] | [] | [
[]
] |
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