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 |
|---|---|---|---|---|---|---|---|---|---|
drj0aq | why do electronics (laptop for example) lose battery when they’re not in use or are asleep? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/drj0aq/eli5_why_do_electronics_laptop_for_example_lose/ | {
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"text": [
"They are still \"on\". In order for you to be able to wake your phone by looking at it, or boot your computer by clicking on the mouse, parts of the system are on all the time. T... | [] | [] | [
[],
[],
[],
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kiv17 | How to make a really hot fire. | **Edit** I guess I wasn't really very clear in wording my question. What I was hoping for was some general advice about what material can be used to build a high temperature cooker, what commonly available cooking fuels (charcoal, wood, propane) might be best suited to this and what temperatures they burn at. In other ... | askscience | http://www.reddit.com/r/askscience/comments/kiv17/how_to_make_a_really_hot_fire/ | {
"a_id": [
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"text": [
"if you want higher temperatures to cook your steak, simply move your steak closer to the fire. wood fires burn in excess of 1000F.",
"if you want higher temperatures to cook your steak, simply move your steak closer to t... | [] | [] | [
[],
[]
] | |
1vi8yu | Why the contrast between regional and global effects of climate? | The title isn't worded so perfectly but I'm curious to know why it is that such a small change in temperature has such a large effect globally? ie, why does 2-4°C change in average global temps. have such dramatic effects compared to local changes in temperature? | askscience | http://www.reddit.com/r/askscience/comments/1vi8yu/why_the_contrast_between_regional_and_global/ | {
"a_id": [
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"text": [
"I also want to build on this question and ask whether this increase in temperature has a disproportionate effect near the polar regions of the planet.\n\nCertain parts of the earth must be just on the verge of thawing. Since water freezes at 0 de... | [] | [] | [
[]
] | |
5smzsr | why is betsy devos considered unqualified? genuine question, i stopped paying attention to politics | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5smzsr/eli5_why_is_betsy_devos_considered_unqualified/ | {
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"text": [
"She is an education secretary with no experience working in education. No formal education, no professional experience.\n\nIt's like assigning someone to run the military who has ... | [] | [] | [
[],
[],
[],
[]
] | ||
2yyo22 | Is the universe mathematical, or only modelled by maths? | I've been wondering about this question a lot as a student soon to be studying Physics at university. Are the rules of the universe written in mathematics, or are they more "abstract" rules that are modelled (very well) by mathematics?
My personal opinion is that it is simply modelled by maths, but then the vast simpl... | askscience | http://www.reddit.com/r/askscience/comments/2yyo22/is_the_universe_mathematical_or_only_modelled_by/ | {
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"text": [
"This isn't a question with a definite scientific answer, so people are probably reluctant to answer it. It's more of a philosophy question than a science question. You can try /r/... | [] | [] | [
[],
[],
[],
[
"http://www.maths.ed.ac.uk/~aar/papers/wigner.pdf"
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] | |
1w60d7 | Why did Roman Catholicism remain dominate in places like Italy, Poland, and Austria after the Great Schism? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1w60d7/why_did_roman_catholicism_remain_dominate_in/ | {
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"text": [
"First of all, we need to clarify what you're asking. Are you referring to the Great East-West Schism of 1053 in which the Pope and the Patriarch of Constantinople mutually excommunicated one another? ... | [] | [] | [
[],
[],
[
"http://upload.wikimedia.org/wikipedia/commons/6/67/Great_Schism_1054_with_former_borders.png"
]
] | ||
byqfl5 | Do two waves have to have the same frequency for interference to happen? | I can't find a clear answer to that.
If i understood it right, fourier synthesis lets a bunch of waves with different frequencies interfere to model a complex one. So it should be possible for two waves with different frequencies to interfere, right? | askscience | https://www.reddit.com/r/askscience/comments/byqfl5/do_two_waves_have_to_have_the_same_frequency_for/ | {
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"text": [
"Waves with different frequencies can indeed interfere. In acoustics, the interference between two sounds of close (but not equal) fre... | [] | [] | [
[],
[],
[],
[],
[
"https://academo.org/demos/wave-interference-beat-frequency/"
],
[]
] | |
1uskx6 | the most important events and circumstances that allowed for life on earth. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1uskx6/eli5_the_most_important_events_and_circumstances/ | {
"a_id": [
"celazwu"
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"text": [
"Geesh. This is like a flashback to my IB Biology exam. Therefore, I'm copying some information from my revision notes. Note that I only got to know the general gist of things, and then that not everything is known about life's origins. \n\nThere ... | [] | [] | [
[]
] | ||
g18q7u | How do we know when cosmic inflation began? | All the sources that I looked at claimed that the inflationary epoch began at about 10\^-36 seconds after the big bang, but is this an arbitrary number that appears plausible as part of the theory, or is this substantiated by evidence of some kind? I am asking this because I couldn't find error ranges for this figure. ... | askscience | https://www.reddit.com/r/askscience/comments/g18q7u/how_do_we_know_when_cosmic_inflation_began/ | {
"a_id": [
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"text": [
"Great question.\n\nWe can plausibly trace back in time from where we are now to the time when the energy density was high enough to invoke the (untested) new physics associated with the idea of Cosmic Inflation. We can even say, if that idea is ... | [] | [] | [
[]
] | |
4faw12 | Have militaries always been divided at the top level into army and navy? If not, when and how did this division start? | For example, was there ever a time and place where someone other than the highest commander (like say the equivalent of a colonel in the US Army) was giving orders to both soldiers and sailors? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4faw12/have_militaries_always_been_divided_at_the_top/ | {
"a_id": [
"d2838oa"
],
"score": [
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"text": [
"In Classical Athens, there was no distinction between commanders of land and naval forces. Every year the Assembly elected a board of ten *strategoi* (which we tend to translate as \"generals\") who would then be assigned to particular military m... | [] | [] | [
[]
] | |
2t9l8q | the difference between yellow cake uranium and "normal" uranium. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2t9l8q/eli5the_difference_between_yellow_cake_uranium/ | {
"a_id": [
"cnx08no"
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"text": [
"Yellow cake uranium is a step in the process of mining raw uranium. Uranium isn't found pure in nature, it's found with other ores. Yellow cake is produced in the process of extracting the uranium from other metals present in the rock, but it isn... | [] | [] | [
[]
] | ||
1nsc33 | As far as I can tell, nearly all of the world divides a day into 24 hours, each of which in turn divides into 60 minutes. When and how did this come about, and were there any radically different systems of time that we've now lost? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1nsc33/as_far_as_i_can_tell_nearly_all_of_the_world/ | {
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"cclkisw",
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"score": [
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"text": [
"Here you go, pal. [Two](_URL_1_) [links](_URL_0_)\n\nShort version: Sumerians found that 24, 60, 360 all being evenly divisible by many numbers make it easy to divide the day (a... | [] | [] | [
[
"http://www.storyofmathematics.com/sumerian.html",
"http://mathforum.org/kb/thread.jspa?messageID=3618169&tstart=0"
],
[
"http://hea-www.harvard.edu/ECT/Daymarks/"
],
[
"https://en.wikipedia.org/wiki/Decimal_time"
],
[]
] | ||
24ea71 | If a large portion of our caloric intake is used to keep our bodies at 98.6 degrees fahrenheit, would staying in a cold environment make your body burn more calories making weigh loss easier? | askscience | http://www.reddit.com/r/askscience/comments/24ea71/if_a_large_portion_of_our_caloric_intake_is_used/ | {
"a_id": [
"ch6c3k0"
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"text": [
"This idea is fine, except for the fact that it takes a deficit of 3,500,000 calories to lose one pound (half a kilo). The calorie that raises the temperature of 1 g of water by 1 degree centigrade is 1/1000th of a Kcal- the unit people typically ... | [] | [] | [
[]
] | ||
5kmyx4 | More information on a Wehrmacht Field Manual | Backstory: A friend of mine was cleaning out some cupboards at the church he works for and came across this. He gave it to me because I like history, but I don't know any German. It's from 1937 and is an army manual of sorts. Can anyone tell me more about it?
_URL_0_ | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5kmyx4/more_information_on_a_wehrmacht_field_manual/ | {
"a_id": [
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"text": [
"That would be the 1937 edition of *Die Dienstunterricht im Heere*, the Army Service Training Manual. It's got the basic information a recruit would need - camouflage, tactical movement, rifle drill, etc. - and state and mili... | [] | [
"http://imgur.com/a/1CVJA"
] | [
[],
[
"https://www.amazon.de/Reibert-Das-Handbuch-deutschen-Soldaten/dp/3813209415",
"http://www.mittler-books.de/index.html"
]
] | |
42kmlb | why do we see diffraction spikes? | Why do we see those "spikes" of light when looking at street lights or even in images of stars?
I tried looking it up but I'm a bit (a lot) confused about it. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/42kmlb/eli5_why_do_we_see_diffraction_spikes/ | {
"a_id": [
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"score": [
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"text": [
"It's due to the aperture (hole) the light passes through before going through the lens and hitting the film or retina. In eyes, the lens isn't made whole, it seals together in front of the pupil. This usually happens with 5 flaps, leading to five... | [] | [] | [
[]
] | |
1t5925 | The American Civil War is often described as "brother fighting brother." Is there any record of soldier killing his own brother in battle, or at least fighting against his brother in a battle? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1t5925/the_american_civil_war_is_often_described_as/ | {
"a_id": [
"ce4gyk8",
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"text": [
"The Campbell brothers from Scotland joined opposing sides, and fought against each other at James Island (near Charleston, South Carolina) in 1862. Neither was killed. Afterwards, one wrote to the other:\n\n > I was astonish... | [] | [] | [
[
"http://www.civilwar.org/battlefields/secessionville/secessionville-history-articles/brother-against-brother-at.html"
],
[]
] | ||
c7apu6 | Can quartz make noise with electricity ? | [deleted] | askscience | https://www.reddit.com/r/askscience/comments/c7apu6/can_quartz_make_noise_with_electricity/ | {
"a_id": [
"eseoxpg"
],
"score": [
17
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"text": [
"Yes, if you can use piezoelectric crystal to generate sounds if you feed them an electrical signal. This is what a lof of cheap buzzers are based on."
]
} | [] | [] | [
[]
] | |
19iwh1 | Did any of the major ruling families of the Roman Empire survive the fall of Rome? Can any modern families trace their lineage back? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/19iwh1/did_any_of_the_major_ruling_families_of_the_roman/ | {
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25,
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"text": [
"The Massimo family in Italy claim to be descendants of Quintus Fabius Maximus the guy who employed the fabian (named after him) strategy to fight Hannibal. The first mention of th... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Massimo_family"
],
[],
[
"http://www.reddit.com/r/AskHistorians/comments/14t6fr/are_there_any_european_families_that_still_exist/"
],
[
"http://www.theatlantic.com/magazine/archive/2002/05/the-royal-we/302497/"
]
] | ||
bhsz6x | race, ethnicity, nationality | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bhsz6x/eli5_race_ethnicity_nationality/ | {
"a_id": [
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"text": [
"Nationality, where you are from. Your country, nation, of origin. \n\nRace/ethnicity is how much melanin you have and your hair, maybe a few other traits like eye shape. This is based on where your ancestors lived and adapte... | [] | [] | [
[],
[]
] | ||
1ch6qr | Roman soldiers drinking vinegar? | I'm doing research on Dr. Benjamin Rush's contribution to early American attitudes towards alcoholism, er, "habitual drunkenness". In at least two of his books/pamphlets, Rush claims that "Spirituous liquors were unknown to the armies of ancient Rome. The canteen of every soldier was filled with nothing but vinegar, an... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1ch6qr/roman_soldiers_drinking_vinegar/ | {
"a_id": [
"c9ghi8e"
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"score": [
13
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"text": [
"The type of wine often given to Roman soldiers was a sour wine or vinegar mixture called [Posca](_URL_0_). It was cheap, healthy to drink, and traveled well. This is also believed to be the vinegar that was put in a sponge and given to Jesus o... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Posca"
]
] | |
g0m1m | When I cut things apart am I actually cutting atomic
bonds? | This is probably a stupid question, but I must learn somehow.
I was slicing up a block of cheese today for lunch. Cut, cut, cut, each slice of the knife cleaving the block into smaller and separate pieces. I realized that I was actually separating SOMETHING there and immediately wondered how far down in levels of ... | askscience | http://www.reddit.com/r/askscience/comments/g0m1m/when_i_cut_things_apart_am_i_actually_cutting/ | {
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386,
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"text": [
"Nah, you're just breaking apart van der Waals forces. If you cut into a crystal like d... | [] | [] | [
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Fracture_mechanics"
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[],
[],
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[]
] | |
pmxce | To what extent does my dog understand my affection for him? | I just wonder how much my dog actually understands my affection for him?
I found my dog in a park back in August. He followed me 14 miles. I was obligated to take him home.
Since then i've taken him on car rides of up to 14 hours where he sits shotgun. He sleeps curled up right beside me every night. When i'm cookin... | askscience | http://www.reddit.com/r/askscience/comments/pmxce/to_what_extent_does_my_dog_understand_my/ | {
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"score": [
49,
162,
10,
108,
64,
6,
4,
9,
5,
2,
... | [] | [] | [
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"http://movies.netflix.com/WiMovie/National_Geographic_Science_of_Dogs/70144621?trkid=2361637"
],
[],
[],
[
"http://www.examiner.com/pets-in-richmond/the-dogs-limbic-system-and-brain-part-1",
"http://i.imgur.com/dTLiK.jpg",
"http://doglinks.co.nz/problems/barry_place/feeling_dogs.htm"
],... | |
8fx53o | Just watched a program about how the moon may have been formed, couple of questions in text? | My take away is, BM (before moon) the Earth had a 5 hour rotation OMG right?, AM (after moon) the moon has added 19 hours to our daily rotation. 1, is the Earth still slowing down? and by how much over how much time 2. will the Earth slow down to match the moons rotation reaching a kind of equilibrium? essentially havi... | askscience | https://www.reddit.com/r/askscience/comments/8fx53o/just_watched_a_program_about_how_the_moon_may/ | {
"a_id": [
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"text": [
"The process that answers your questions is called \"tidal locking\". As an effect of tidal forces, two bodies orbiting each other will synchronize their rotation / orbit.\n\nIn the case of the Earth/Moon system, the gravitational pull of the Moo... | [] | [] | [
[]
] | |
2l9mge | why are grape nuts called grape nuts when they have no grapes in them? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2l9mge/eli5_why_are_grape_nuts_called_grape_nuts_when/ | {
"a_id": [
"clsonsn"
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"text": [
"From their page:\n[One says that Mr. Post believed glucose, which he called “grape sugar,” formed during the baking process. This, combined with the nutty flavor of the cereal, is said to have inspired its name. Another explanation claims that th... | [] | [] | [
[
"http://www.postfoods.com/our-brands/grape-nuts/our-story/"
]
] | ||
1xfq4r | the dying whale noises coming from my stomach during a silent class. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1xfq4r/eli5_the_dying_whale_noises_coming_from_my/ | {
"a_id": [
"cfax1g8"
],
"score": [
3
],
"text": [
"Your stomach is anticipating food and is squishing digestive juices around as it would if there was food mash in there."
]
} | [] | [] | [
[]
] | ||
18j3h7 | Why does throwing a toaster in the tub kill me? | So here the question that we are all talking about in the office today; why when i drop a hair dryer in a tub will it kill me? The only thing we could find on the internet was Mythbusters and they say it will, but i dont believe it without the math. There is absolutely no reason that the electricity should go through m... | askscience | http://www.reddit.com/r/askscience/comments/18j3h7/why_does_throwing_a_toaster_in_the_tub_kill_me/ | {
"a_id": [
"c8f9qgg",
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"score": [
3,
4,
3
],
"text": [
"_URL_0_\n\nThere are a few stories of it, but I wouldn't assume it would always kill you. \n\n_URL_1_\n\nMost stories I've seen have involved direct contact with a circuit.",
"It doesn't take a trem... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Claude_Fran%C3%A7ois#Death",
"http://news.softpedia.com/news/17-Year-Old-Girl-Dies-Electrocuted-While-Twittering-114776.shtml"
],
[],
[]
] | |
99l16r | how it possible to knock over a line of dominoes increasing in size if the amount of energy imparted on the smallest domino is not enough to directly knock over the largest one? | [Example](_URL_0_) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/99l16r/eli5_how_it_possible_to_knock_over_a_line_of/ | {
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24,
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],
"text": [
"The increasing mass of the falling dominos increases the force that's eventually acting on the largest domino.",
"Most of the energy is not contained in the previous push, but... | [] | [
"https://i.imgur.com/g9FqEvP.gifv"
] | [
[],
[],
[],
[]
] | |
1zosv3 | how does the same dna become different types of cells? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1zosv3/eli5_how_does_the_same_dna_become_different_types/ | {
"a_id": [
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2,
2
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"text": [
"Imagine a blueprint for the construction of a building. The blueprint has instructions for every floor. Each floor is to be constructed with different designs and specifications, and each floor has a different team of worker... | [] | [] | [
[],
[]
] | ||
5x4qxu | What is a tensor of rank 2? | So i wanted to know more about Tensors, but couldn't find anything giving me useful answers... i know that Tensor Rank 1 is a vector and therefore rank 2 is some kind of an 'extension' or something. But i would like to know:
1. What is a Tensor of Rank 2? Like a number or an array of numbers or something else?
2. How ... | askscience | https://www.reddit.com/r/askscience/comments/5x4qxu/what_is_a_tensor_of_rank_2/ | {
"a_id": [
"def7szt",
"defbwmn"
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"score": [
4,
14
],
"text": [
"I'll use spatial rotations as the example because they're easiest to imagine. Think about what a scalar (rank-0 tensor) is. It's something which doesn't change under rotations. Under an arbitrary rotation, a scalar field φ ... | [] | [] | [
[],
[]
] | |
1anl5p | If gravity can only pull not push why is the universe expanding? What applies the force that pushes galaxies and the like further apart? | askscience | http://www.reddit.com/r/askscience/comments/1anl5p/if_gravity_can_only_pull_not_push_why_is_the/ | {
"a_id": [
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2,
3
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"text": [
"There isn't a force pushing the galaxies apart. Space itself is expanding. What drives this expansion is still a very good question, but your question is phrased in a way that implies that the galaxies are being pushed thr... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Stress%E2%80%93energy_tensor"
]
] | ||
u8tct | systolic vs. diastolic blood pressure | Had mine taken today and it was 119/53.
What do these numbers mean, and how are they related to each other? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/u8tct/eli5_systolic_vs_diastolic_blood_pressure/ | {
"a_id": [
"c4tab7z",
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"score": [
4,
4,
5
],
"text": [
"Systolic = the pressure in your circulatory system when your heart is beating.\n\nDiastolic = The pressure in your circulatory system between beats, when your heart is at rest. \n\nThe higher the number... | [] | [] | [
[],
[
"http://healthsciencetechnology.wikispaces.com/Basic+Cardiology"
],
[]
] | |
2qav4m | Which has a greater effect on altering metabolism: aerobic or anaerobic exercise? | Title pretty much sums it up. Which type of exercise changes metabolism the most: aerobic or anaerobic? | askscience | http://www.reddit.com/r/askscience/comments/2qav4m/which_has_a_greater_effect_on_altering_metabolism/ | {
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"Hate to be that person to argue semantics here but the term [metabolism](_URL_0_) has such a broad definition that is used to describe the sum of all life-sustaining reactions that occur within the body/organism.\n\nI am going to assume here that... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Metabolism"
]
] | |
ahwpa7 | why does horseradish only burn your nose? | Same goes for mustard I suppose. Why does it not affect my mouth as much, but makes me feel like I'm breathing fire out my nose? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ahwpa7/eli5_why_does_horseradish_only_burn_your_nose/ | {
"a_id": [
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"text": [
"The heat in horseradish comes from a highly reactive chemical ( isothiocyanate ). The chemical stays pretty stable as long as it isn't introduced to oxygen. When you chew on horseradish, you crush the plant (saliva also ai... | [] | [] | [
[],
[]
] | |
5vq5l8 | how does a slot machine choose a winner? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5vq5l8/eli5_how_does_a_slot_machine_choose_a_winner/ | {
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"It's based on random models. \n\nImagine, you have to pay 2 Euros per game. The slot machine has 4 different Outcomes. You gain nothing, you win 3 euro, 7 euros or 17 euros. If t... | [] | [] | [
[],
[],
[],
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] | ||
5azmr2 | Did ancient people go to the beach? | Did say rich Romans go to the beach to relax on the weekends?
| AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5azmr2/did_ancient_people_go_to_the_beach/ | {
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"It appears this question was asked on this sub about three years ago, and a lot of in depth answers with citations were provided: _URL_0_\n\nBy no means should this discourage people from providin... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/190l1i/did_ancient_peoples_go_to_the_beach_as_we_do_today/"
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"https://upload.wikimedia.org/wikipedia/commons/c/c6/Villa_Di_Tiberio_Cave.jpg",
"https://upload.wikimedia.org/wikipedia/commons/2/29/The_Blinding_of_Polyphemus%2C_cast_reconstruction_... | |
29w9of | How did the Mormon Church's racially charged teachings play out in overseas missionary activities? | Comments [this thread](_URL_0_) (some of which have been deleted) talked about how the Church of Jesus Christ of Latter-Day Saints used to teach that African Americans were spiritually unclean. How did the Church explain this when preaching to other "non-white" races? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/29w9of/how_did_the_mormon_churchs_racially_charged/ | {
"a_id": [
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"The history of Mormon race-relations is a complicated one. In the early years of the Church's history, when the Church was still led by Joseph Smith, the overall attitude by Church members towards ra... | [] | [
"http://www.reddit.com/r/AskHistorians/comments/29qpv3/slavery_is_everywhere_in_the_bible_how_important/"
] | [
[],
[],
[]
] | |
s668c | Has there ever been anyone born with so many mutations, their humanity could be questioned? | I have seen a lot of strange fetuses that look decidedly non-human; 4 eyes, no legs, gills, etc. Has any of these ever made it to birth? Would they still be considered human? | askscience | http://www.reddit.com/r/askscience/comments/s668c/has_there_ever_been_anyone_born_with_so_many/ | {
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"I guess it depends on your definition of human. This is not something we've necessessarily entirely defined at all times. There's no clear way to do such a thing. If we based it chromosome count, everyone with Down's syndrome would be consider... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Anencephaly"
]
] | |
2axcob | what stops banks from creating money out of thin air? | Guy goes into a bank and borrows $100, then he goes and spends it at the grocery store. In Turn the Grocery store deposits that $100 into the bank and someone else borrows the $100 and spends it.. So essentially the bank thinks they have loaned out $200 and expects $200 but in reality only $100 ever existed and there i... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2axcob/eli5_what_stops_banks_from_creating_money_out_of/ | {
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"text": [
"Disagree with the other two posts.\n\nOnly the Federal Reserve and US Mint have the power to create money (edit: obviously talking about in America, before someone mentions it). They just do. They're the only ones that have the stuff and are allo... | [] | [] | [
[]
] | |
7qkld2 | Was there intellectual cross-pollination between early Sufi mystics and Christian ascetics? | I took a few classes on Islamic history in college and some of the similarities between the practices of early Sufis (wearing hair shirts, repetitive/constant prayers, etc.) reminded me a lot of what I had heard about early Eastern (pre-schism) Christian monks, specifically those collectively referred to as the "Desert... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7qkld2/was_there_intellectual_crosspollination_between/ | {
"a_id": [
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"I was a religious studies minor in college and, my professors did mention that there is possible evidence that Muhammad knew about Christian traditions and methods, since he grew up around merchants, whom would spread their knowledge and understa... | [] | [] | [
[]
] | |
1x6d73 | how did this whole bacon thing get started? | So all the posts, memes, jokes about how great bacon is. How did it get started and who's behind it all? Is it the Bacon industry? Was there one meme in particular? Why bacon? Who can shed some light on this phenomenon? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1x6d73/how_did_this_whole_bacon_thing_get_started/ | {
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"text": [
"The average American eats 18 pounds of bacon per year. No one had to start anything. The love was there from the start.",
"I think a huge part of it was Epic Meal Time and the more general rise of humor based on exagge... | [] | [] | [
[],
[]
] | |
3f4vtj | if horsepower is held constant and torque increased what change will be felt when driving a car? if torque is held constant and horsepower is increased what change will be felt when driving the same car? | If I take the car for a test drive with default torque and HP values. Then I increase only HP and test drive it again, what will I feel? Then if I reset both values to default and increase torque, now what will I feel compared to the first time I drove it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3f4vtj/eli5_if_horsepower_is_held_constant_and_torque/ | {
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"text": [
"While the above comments are all true, another way to see it is torque = Pulling Power, Tractors for example have high torque, the higher your torque the less a load will affect you. A car with high torque will drive just as... | [] | [] | [
[],
[]
] | |
1eypqn | Career Path Advice? | Hey guys and gals.
I'm currently finishing up my 3rd year of my BA, and for as long as I've been interested in history I've been aiming towards working as a history professor and researcher. I'm looking for just some general tips as I head into my final year of my BA, and moving forward.
I'm a fairly successful stu... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1eypqn/career_path_advice/ | {
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"text": [
"What are you most interested in? This is the first and most important question. \nIf you aren't sure, then find out! \nThen, figure out who the professors are that are interested in your chosen specialty, and contact them ... | [] | [] | [
[],
[]
] | |
7bylx6 | Is there any underlying reason we say protons are positive and electrons are negative? Would it work if we just switched both in all our equations? | What I mean is, is there any reason we say protons are positive and electrons are negative; so if we just switched every equation would they be just as correct? | askscience | https://www.reddit.com/r/askscience/comments/7bylx6/is_there_any_underlying_reason_we_say_protons_are/ | {
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"yes. We could have called them blu... | [] | [] | [
[],
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[],
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"https://physics.stackexchange.com/questions/68471/who-and-why-started-the-electrons-are-negative-protons-are-positive-convent"
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[]... | |
50fep7 | how do you figure out when you actually do win a contest and its not a scam. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/50fep7/eli5_how_do_you_figure_out_when_you_actually_do/ | {
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"text": [
"Generally you will have entered the contest you are winning. If you didn't enter, then it's probably a scam. "
]
} | [] | [] | [
[]
] | ||
71j1tf | why do we die or get sick if we have contact with certain types of material/metals? | Why is it possible to get sick or die just by simply touching materials without being allergic to them?
| explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/71j1tf/eli5_why_do_we_die_or_get_sick_if_we_have_contact/ | {
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"text": [
"\"Allergic\" refers to one kind of reaction your body has to some substances (histamine reaction). There are other kinds of reactions. For example, arsenic (t... | [] | [] | [
[],
[],
[],
[],
[]
] | |
1m1yvn | Is there social scientific evidence regarding the efficacy of the Montessori method of childhood education vs. other methods? If so, what does it conclude? | There seems to be quite a bit of anecdotal evidence supporting the Montessori method, but I have only found [one comparative study from 2006](_URL_0_) addressing this question. Is there a larger body of evidence regarding the efficacy of the Montessori method? What does it say? | askscience | http://www.reddit.com/r/askscience/comments/1m1yvn/is_there_social_scientific_evidence_regarding_the/ | {
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"text": [
"[Another study](_URL_0_) - University of Buffalo, NY\n\n > While the present study did not identify a consistent pattern of performance across grade levels, the lack of significantly higher scores for ... | [] | [
"http://www.scientificamerican.com/article.cfm?id=students-prosper-with-mon"
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[
"http://www.pearweb.org/teaching/pdfs/Schools/Cambridge%20Montessori%20Elementary-Middle%20School/Articles/Montessori%20article.PDF"
],
[],
[]
] | |
2c1iy0 | how would a seatbelt in an airplane save my life? | I mean, I would think if the plane crashes, everyone's fucked... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2c1iy0/eli5_how_would_a_seatbelt_in_an_airplane_save_my/ | {
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"It keeps you from being a projectile if the p... | [] | [] | [
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"http://extrafabulouscomics.com/comic/148/",
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2grffn | why is fcc invoking title ii over the internet definitely a good idea? | On the one hand, Title II would allow the FCC to draft strong net neutrality rules. On the other hand though, all Title II does is ALLOW the FCC to make these rules; net neutrality doesn't happen automatically. My overly pessimistic thought process allows me to consider scenarios such as the FCC invoking Title II but... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2grffn/eli5_why_is_fcc_invoking_title_ii_over_the/ | {
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"text": [
"If Title II is invoked, the FCC **may** screw us over at some later point; if it is not invoked, we definitely **will** get screwed over, and very soon. \n\nA possible negative further on down the line, or a definite negati... | [] | [] | [
[],
[
"http://www.huffingtonpost.com/bruce-kushnick/net-neutrality-solved-ver_b_5390789.html"
]
] | |
jkgpz | Use lower pressure to assist in generating electricity, possible? | This thought popped in my head the other day but I'm absolutely certain I'm missing a crucial point.
To generate electricity we very often use some method of converting water to steam which then drives a turbine, correct? Well, I was thinking, when you lower the pressure water will boil at a much lower temperature and... | askscience | http://www.reddit.com/r/askscience/comments/jkgpz/use_lower_pressure_to_assist_in_generating/ | {
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"text": [
"Well I kinda see where op is going with this. In a closed system where the water is under less pressure and a turbine is also within said system and it is engineered so the water c... | [] | [] | [
[
"http://www.engineeringtoolbox.com/boiling-point-water-d_926.html"
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[],
[
"http://www.engineeringtoolbox.com/boiling-point-water-d_926.html"
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1sbl7o | when are you supposed to use this - > ; | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1sbl7o/when_are_you_supposed_to_use_this/ | {
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"text": [
"Semi-colon. Say it with me. \n\nIf the two parts of the sentence can stand alone, it can replace a comma.\n\nIt wouldn't work in the above sentence; it doesn't have the required ... | [] | [] | [
[],
[],
[
"http://theoatmeal.com/comics/semicolon"
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[]
] | ||
gaa8o | Are there any marine amphibians?
| I can't think of any, and a quick googling leads me to believe there are none, but I thought that this would be a good place to get a more definite answer. So, are there any out there, have there ever been, and if not, why not? | askscience | http://www.reddit.com/r/askscience/comments/gaa8o/are_there_any_marine_amphibians/ | {
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"_URL_0_\r\n\r\n > For the purpose of reproduction most amphibians require fresh water. A few (e.g. Fejervarya raja) can inhabit brackish water and even survive (though not thrive) in seawater, but there are no true marine amphibians."
]
} | [] | [] | [
[
"http://en.wikipedia.org/wiki/Amphibian"
]
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44sm56 | How common was foodborne illness before the 20th century? | Eating improperly handled meats and contaminated vegetables can cause digestive problems or worse. My intuition is that prior to the widespread availability of refrigeration, and especially prior to mass knowledge of germ theory, it would have been very difficult to avoid eating tainted items, and thus getting sick. On... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/44sm56/how_common_was_foodborne_illness_before_the_20th/ | {
"a_id": [
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"score": [
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"text": [
"I can only really speak with regards to Britain in the early modern period (18th and 19th Century) based on a few sources that I have looked at. It would be hard to say as to how often someone would get sick, as obviously it would vary person to ... | [] | [] | [
[]
] | |
4oii12 | Is it possible for Gas Giants planets to be normal planets but with very high density atmosphere ? | And can there be life under this atmosphere but are undetectable to us ?
| askscience | https://www.reddit.com/r/askscience/comments/4oii12/is_it_possible_for_gas_giants_planets_to_be/ | {
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"text": [
"Afraid not. The center of a gas giant is always going to be a super-hot liquid of metal and rock. Saturn's core is 21,000 F (11,700 C) while Jupiter's is about 43,000 F (24,000 C).\n\nEven if you have a rocky surface and th... | [] | [] | [
[],
[
"https://www.nasa.gov/mission_pages/juno/main/"
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] | |
2jeyei | How did various cultures all develop similar weapons? | Like how every culture has a variation of a sword or bow and arrow, is it just a coincidence? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2jeyei/how_did_various_cultures_all_develop_similar/ | {
"a_id": [
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"This is not quite the case. Swords and bows have not appeared in \"every culture.\" The melee weapon of choice in the ancient Andes, for instance, was the mace. These are represented in the art of several cultures: [Moche](_URL_4_) warriors, bot... | [] | [] | [
[
"http://www.metmuseum.org/collection/the-collection-online/search/315214?rpp=30&pg=1&ft=mace&where=Peru&pos=2",
"http://www.famsi.org/research/pohl/images/aztec4figure08.jpg",
"https://www.google.com/culturalinstitute/asset-viewer/ceramic-ceremonial-vessel-that-represents-a-combat-scen... | |
124yy5 | Can quantum information survive a black hole? | In detail: I am aware of experiments involving quantum bits - quibits - where information (binary bits) are transmitted from one part of the earth to the other. As I understand it, they could be transmitted from one part of the universe to another in real time. To the extent of my understanding, normal information is... | askscience | http://www.reddit.com/r/askscience/comments/124yy5/can_quantum_information_survive_a_black_hole/ | {
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"Both Stephen Hawking and Kip Thorne believed that all information was destroyed in a black hole, and in the 70s made a bet with another physicist (Preskill). In 2004, Hawking conceded the bet (postulating that information is... | [] | [] | [
[
"http://physicsworld.com/cws/article/news/2004/jul/22/hawking-loses-black-hole-bet"
],
[]
] | |
1itgn2 | What causes objects in the distance to be less vibrantly colored than those nearer to the observer? | On my way to work this morning, I finally put some thought into a "phenomenon" that I see every day. The trees just 20 feet ahead of the car were a beautiful, deep green. But the trees more distant, say a mile ahead, were quite bland and visibly less green than the nearer trees. Now, my best guess for this is because o... | askscience | http://www.reddit.com/r/askscience/comments/1itgn2/what_causes_objects_in_the_distance_to_be_less/ | {
"a_id": [
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"score": [
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"text": [
"The answer is dust, my friend. It absorbs all of the deep, pretty colors and reflects dull grays and browns. There are some other things that cause this too, other than particles, like the molecules in the air itself (to a lesser degree)."
]
} | [] | [] | [
[]
] | |
gh402 | What distinguishes the artificial/'computer' brain from the human brain? | It is something that I have been fascinated with for a while. I am by no means a science-literate so I hope that I make myself clear in following question.
I am aware that human and artificial intelligence does not depend on the same rules but from what I understand, computers and "artificial brains" are constructed u... | askscience | http://www.reddit.com/r/askscience/comments/gh402/what_distinguishes_the_artificialcomputer_brain/ | {
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"text": [
"You're confusing artificial intelligence, which is basically the building of algorithms or numeric recipes that make human-like decisions, with actual computers like your laptop.... | [] | [] | [
[],
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] | |
4lg6e9 | My water bottle is a stainless steel, double walled, vacuum insulated vessel. It claims to keep liquids cold for up to 24 hours but only hot for 12 hours. Why are these not the same or at least close to one another? | askscience | https://www.reddit.com/r/askscience/comments/4lg6e9/my_water_bottle_is_a_stainless_steel_double/ | {
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"My guess is that the temperature range which counts as \"cold\" is... | [] | [] | [
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7u1vm7 | AMA: Pseudoarchaeology - From Atlantis to Ancient Aliens and Beyond! | Hi r/AskHistorians, my name is David S. Anderson. I am an archaeologist who has a traditional career focused on studying the origins and development of early Maya culture in Central America, and a somewhat less traditional career dedicated to understanding pseudoarchaeological claims. Due to popular television shows, ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7u1vm7/ama_pseudoarchaeology_from_atlantis_to_ancient/ | {
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"d... | [] | [] | [
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5xssii | I am a German citizen living in the heart of Germany during WW2, how (un)informed am I about how the war is going? How long does it take before I realize the Reich is losing the war? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5xssii/i_am_a_german_citizen_living_in_the_heart_of/ | {
"a_id": [
"deks3oz"
],
"score": [
77
],
"text": [
"From an [earlier answer of mine](_URL_0_)\n\n > Enjoy the war, for the peace is going to be terrible- popular German joke in the last year of the war\n\nAs the fortunes of war turned against Germany after the Battle of Stalingrad, German propag... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/5ndkdx/im_a_german_living_in_western_germany_in_december/"
]
] | ||
2laohy | Why did most German tank destroyers of WWII lack turrets? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2laohy/why_did_most_german_tank_destroyers_of_wwii_lack/ | {
"a_id": [
"clt1i1u",
"clt3ftg"
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"score": [
9,
9
],
"text": [
"Everything the germans called a tank destroyer was turretless. The US had a strange fetish with semi-armored \"tank destroyers\" that featured uncovered turrets and barely adequate armor.\n\nAnyhow, there are two very good r... | [] | [] | [
[],
[
"https://c1.staticflickr.com/3/2636/3880172705_1c5ee5dd5a_z.jpg",
"http://worldoftanks.com/dcont/fb/imagesforarticles/chieftains_hatch/usfirefly/17prloader2.jpg",
"http://upload.wikimedia.org/wikipedia/commons/d/d8/Loading_17_pounder_rounds_into_Sherman_Firefly_1944_IWM_B_8793.jpg",
"http://... | ||
2jt2in | What traits make certain animals (rock pigeons, house sparrows, squirrels, rats, cockroaches, etc.) so successful in city life, and what are the main challenges city-dwellers face? | Some possibilities I'm imagining are disease resistance, ability to function in a stimulation-heavy environment, and opportunistic feeding. | askscience | http://www.reddit.com/r/askscience/comments/2jt2in/what_traits_make_certain_animals_rock_pigeons/ | {
"a_id": [
"clfi8h6",
"clfooa0"
],
"score": [
3,
4
],
"text": [
"The opportunistic feeding is close to the main reason. Creatures that thrive in cities are not specifically adapted to a particular environment or food source. It might help to look at the question from the other direction w... | [] | [] | [
[],
[
"http://www.pnas.org/content/105/10/3796.abstract",
"http://www.ncbi.nlm.nih.gov/pubmed/20819163",
"http://www.ncbi.nlm.nih.gov/pubmed/20874759",
"http://www.esajournals.org/doi/abs/10.1890/06-1105"
]
] | |
fvubsj | why does reseating ram actually fix things for a computer? | My stock CPU fan wasn’t working properly so I saw a YouTube video that said to reseat the RAM. I doubted it would work but ever since then, my fan has been working perfectly. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fvubsj/eli5_why_does_reseating_ram_actually_fix_things/ | {
"a_id": [
"fmkkzpt"
],
"score": [
3
],
"text": [
"I've never reseated memory and gotten it to work again. The fact that it was impacting your CPU fan leads me to wonder if your motherboard is possessed. \n\nBUT. If there's any dirt or dust or crud in the RAM slot, then it could have a bad connec... | [] | [] | [
[]
] | |
6ltchb | Do scarecrows actually work on birds, or is it obvious to them that those are just lifeless pieces of cloth or other material? | askscience | https://www.reddit.com/r/askscience/comments/6ltchb/do_scarecrows_actually_work_on_birds_or_is_it/ | {
"a_id": [
"djwv01w"
],
"score": [
14
],
"text": [
"I'd say it depends. The same scarecrow in a field, day in, day out, will probably have birds get used to it and not work as a deterrent. Some species of bird, particular corvids, are incredibly intelligent, able to recognise individual faces and... | [] | [] | [
[]
] | ||
1evjc2 | How would a telescope be able to get a glimpse of the universe as it appeared (relatively) shortly after the big bang occurred? | askscience | http://www.reddit.com/r/askscience/comments/1evjc2/how_would_a_telescope_be_able_to_get_a_glimpse_of/ | {
"a_id": [
"ca46a88"
],
"score": [
5
],
"text": [
"The farthest back a telescope can glimpse is to the cosmic microwave background, about 400,000 years after the big bang when the universe became transparent. If a telescope could detect neutrinos or gravitational waves with great resolution and s... | [] | [] | [
[]
] | ||
3mqskp | why won't nasa just crowd fund their manned flight to mars? | I hear they won't be ready till the 2030's and can only assume because of budget/modern technology restrictions. But why don't they crowd fund it? Let the people speak with their money! We want Mars! | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3mqskp/eli5_why_wont_nasa_just_crowd_fund_their_manned/ | {
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"score": [
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7,
2,
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22,
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],
"text": [
"The issue is not really funding, the issue is technology. It has not yet been invented and just throwing money ... | [] | [] | [
[],
[],
[],
[],
[],
[],
[]
] | |
4n4cyd | There's a massive ball of water floating in space. How big does it need to be before its core becomes solid under its own pressure? | So under the assumption that - given enough pressure - liquid water can be compressed into a solid, lets imagine we have a massive ball of water floating in space. How big would that ball of water have to be before its core turned to ice due to the pressure of the rest of the water from every direction around it?
I'm... | askscience | https://www.reddit.com/r/askscience/comments/4n4cyd/theres_a_massive_ball_of_water_floating_in_space/ | {
"a_id": [
"d40xluf",
"d40xsjf",
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"score": [
44,
245,
9,
2
],
"text": [
"It does greatly depend on the temperature. On a tangent, you don't need any great pressure outside of a solar system's \"ice line\", which is the point where the temperature is ... | [] | [] | [
[],
[
"https://www.youtube.com/watch?v=pOYgdQp4euc"
],
[],
[]
] | |
2iegs9 | Why is there a mesh design in all microwave windows? | I have always seen this, but never have known why it is there. | askscience | http://www.reddit.com/r/askscience/comments/2iegs9/why_is_there_a_mesh_design_in_all_microwave/ | {
"a_id": [
"cl1l2jg"
],
"score": [
28
],
"text": [
"The holes in this mesh are smaller than the wavelengths of the electromagnetic radiation your microwave is producing. This makes it so the waves can’t pass through the holes. This forms something called a Faraday Cage which traps the microwaves... | [] | [] | [
[
"http://www.todayifoundout.com/index.php/2010/08/why-you-generally-shouldnt-put-metals-in-the-microwave/"
]
] | |
2qtrho | if women are born with a set number of eggs, does each pregnancy delay menopause by 9+ months? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2qtrho/eli5_if_women_are_born_with_a_set_number_of_eggs/ | {
"a_id": [
"cn9eul6",
"cn9ey9a"
],
"score": [
23,
5
],
"text": [
"No. When you go into menopause, you still have thousands of eggs left in your system. Your body just stops spitting them out.",
"reading wikipedia it seems the number of eggs and onset of menopause is not directly relat... | [] | [] | [
[],
[]
] | ||
1kn3st | Did the Spanish try to hide the fact that Columbus found a new continent? | As opposed to sharing the wealth. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1kn3st/did_the_spanish_try_to_hide_the_fact_that/ | {
"a_id": [
"cbqogc6",
"cbqs847"
],
"score": [
3,
6
],
"text": [
"Probably not, Because when Columbus first landed, they all assumed he had landed in the East Indies/ Indonesia. The original purpose of Columbus' expedition was to find a quicker way to India. Little did he know that there w... | [] | [] | [
[],
[]
] | |
12ahu7 | When was the first 'objective' history written? When did objectivity become the norm? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/12ahu7/when_was_the_first_objective_history_written_when/ | {
"a_id": [
"c6thp0g",
"c6tid79"
],
"score": [
3,
5
],
"text": [
"See also [this thread](_URL_1_), and for a direct answer to your question, [this one from the week before](_URL_0_).",
"You're assuming that its possible to be objective, which I would dispute."
]
} | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/11bdsl/theory_thursday_leopold_von_ranke_and_history_as/",
"http://www.reddit.com/r/AskHistorians/comments/11oezb/theory_thursday_objectivity/"
],
[]
] | ||
5ryizt | If you put an object that was perfectly red in a room with absolutely no red wavelengths, what colour would it be? | Asking because I know objects are certain colours because of the light they reflect. So if there were no wavelengths of that colour to reflect, but there was still visible light to illuminate it, what would you see? | askscience | https://www.reddit.com/r/askscience/comments/5ryizt/if_you_put_an_object_that_was_perfectly_red_in_a/ | {
"a_id": [
"ddb8toj",
"ddbbmzg"
],
"score": [
33,
11
],
"text": [
"Black.\n\nThe point here is that it is \"red\" by virtue of what photon wavelengths it reflects. This is true for every object in the room around you... as long as it is not a source of light (like your computer screen, o... | [] | [] | [
[],
[]
] | |
24tk02 | What causes the clouds to have this ripple effect? | [Here is the image](_URL_0_) | askscience | http://www.reddit.com/r/askscience/comments/24tk02/what_causes_the_clouds_to_have_this_ripple_effect/ | {
"a_id": [
"chaua9h"
],
"score": [
4
],
"text": [
"Ah, that's one of my favorites. That's the Kelvin-Helmholtz instability, which occurs between two different layers of fluid moving with two different velocities. Waves on the ocean are another example of this, where air moves over the water, crea... | [] | [
"http://i.imgur.com/iWXZ6Ft.jpg"
] | [
[]
] | |
7xkhjr | why/how does anesthesia or comas cause time disorientation? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7xkhjr/eli5_whyhow_does_anesthesia_or_comas_cause_time/ | {
"a_id": [
"du8xp96",
"du9gghb",
"du9uh8j"
],
"score": [
2,
3,
3
],
"text": [
"technology plays a big part I'm sure. imagine being in the 80's and waking up today. You'd feel like you woke up into Star Trek. ",
"My understanding is that it's similar to sleep in the sense \"tim... | [] | [] | [
[],
[],
[]
] | ||
a57t0v | what's the difference between exothermic/endothermic and exergonic/endergonic? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/a57t0v/eli5_whats_the_difference_between/ | {
"a_id": [
"ebkilb2"
],
"score": [
6
],
"text": [
"An exothermic reaction results in a positive transfer of heat, while an endothermic reaction causes a negative transfer of heat.\n\nAn exergonic reaction causes a net increase in free energy, while a endergonic reaction causes a net decrease in f... | [] | [] | [
[]
] | ||
3idm2q | why are cats so incredibly loud when mating but most other animals aren't? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3idm2q/eli5_why_are_cats_so_incredibly_loud_when_mating/ | {
"a_id": [
"cufh8en",
"cufh9fh"
],
"score": [
3,
2
],
"text": [
"Dick spikes. No joke ",
"I'm willing to bet vast sums of money that if you were getting [impaled by a barbed penis](_U... | [] | [] | [
[],
[
"https://www.youtube.com/watch?v=3UVw7cgv36A"
]
] | ||
da96no | why popular apps take so long releasing dark mode? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/da96no/eli5_why_popular_apps_take_so_long_releasing_dark/ | {
"a_id": [
"f1o1daj"
],
"score": [
3
],
"text": [
"Features get prioritized by the product owner and estimated by the engineering team. A low priority feature doesn't get to the engineering team even if it's low effort because engineering team has other higher priority things to work on."
]
} | [] | [] | [
[]
] | ||
fygbpt | why is it so difficult to do the 'good' things in life even though we know they are better for us? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fygbpt/eli5_why_is_it_so_difficult_to_do_the_good_things/ | {
"a_id": [
"fmzr5ml"
],
"score": [
8
],
"text": [
"Your brain is wired for immediate gratification of base animal needs. You are hardwired by billions of years of evolution (ever since life began) to think that your next meal may never come, there's a threat around every corner, and things like t... | [] | [] | [
[]
] | ||
1tqfkp | Does the age at which a species typically reproduces (relatively to the maximum age it can live) have any substantial effect at the rate it can evolve? | Say a species lives in average for 10 years. Would it experiment any signs of evolution at a faster rate if it reproduced when it reached 2 years of age, as opposed to say 6? This is of course with the assumption that it has adapted for optimal conditions to reproduce at the ages mentioned, and with very little changes... | askscience | http://www.reddit.com/r/askscience/comments/1tqfkp/does_the_age_at_which_a_species_typically/ | {
"a_id": [
"ceakbsk",
"ceaknbu",
"ceat952"
],
"score": [
3,
5,
3
],
"text": [
"If we assume all else is equal and there is heritable segregating genetic variation for the trait under selection, yes. More generations means more opportunities for selection to sample among the segreg... | [] | [] | [
[],
[],
[]
] | |
1ttz55 | Why does heating steel make it stronger? | Heating steel changes its molecular structure to make it stronger. What's going on at the molecular level? | askscience | http://www.reddit.com/r/askscience/comments/1ttz55/why_does_heating_steel_make_it_stronger/ | {
"a_id": [
"cebf50k",
"cebkxys",
"cebnxo0"
],
"score": [
5,
6,
6
],
"text": [
"This process is known as [tempering](_URL_1_). Steel is given hardness by heating it to an upper critical temperature and then quickly cooling it. By heating it to a lower critical temperature, this all... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Austenite",
"http://en.wikipedia.org/wiki/Tempering_%28metallurgy%29"
],
[],
[
"http://en.wikipedia.org/wiki/Dislocation"
]
] | |
2gk97y | if it's so much cheaper to retain existing customers than to acquire new customers, why do cable and isp companies only offer their promotional/best rates to new customers? why don't they lower the cost for every year i stay with them? | Is it because cable companies don't really have to compete? After all, there's usually only one option for TV and internet in most places, right? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2gk97y/eli5_if_its_so_much_cheaper_to_retain_existing/ | {
"a_id": [
"ckjvotl"
],
"score": [
3
],
"text": [
"If you call them and threaten to cancel you can get your rate lowered again every time. "
]
} | [] | [] | [
[]
] | |
e7g1jh | What causes human hair to grow in multiple colors? | askscience | https://www.reddit.com/r/askscience/comments/e7g1jh/what_causes_human_hair_to_grow_in_multiple_colors/ | {
"a_id": [
"fab0u4w"
],
"score": [
2
],
"text": [
"Inside your hair follicles are two main types of cells:\n\n* Keratinocytes, cells that produce the keratin that will ultimately become hair, and\n* Melanocytes, cells that produce hair pigments.\n\nThere are about one melanocyte for every 5 kerat... | [] | [] | [
[]
] | ||
oskgy | - what the hell is going on with the republican election and does it merits my attention? | I'm sick of seeing headlines about the election, then not understanding the article when I try to read it. I'm too far out of the loop. Please inform me. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/oskgy/eli5_what_the_hell_is_going_on_with_the/ | {
"a_id": [
"c3jp3bj",
"c3jq8d6"
],
"score": [
2,
2
],
"text": [
"I'd actually love for someone to break this down as well. I have an aversion to politics because everyone seems so overwhelmingly polarized, and it often gets too heated :\\",
"I haven't been up-to-date on the latest ne... | [] | [] | [
[],
[]
] | |
2fbdd3 | what is that sharp, cold smell when water gets in my nose? where does it come from? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2fbdd3/eli5_what_is_that_sharp_cold_smell_when_water/ | {
"a_id": [
"ck7n99k",
"ck7r5fz",
"ck7ssp6"
],
"score": [
6,
2,
2
],
"text": [
"That's your brain going \"Fuck, there's water in my nose, that's bad!\" ",
"water contains large numbers of ions as well as micro-organisms. the smell could be any combination of them. \n\nyou might... | [] | [] | [
[],
[],
[]
] | ||
8nqm8y | Why is the brain divided? | * [A search](_URL_2_) doesn't reveal anything that answers this question specifically.
* Yes, I know that [many of the left brain/right brain claims are false](_URL_1_).
* Essentially I'm asking about the cerebrum's [longitudinal fissure](_URL_0_)--why would such a feature be selected for? Doesn't it waste space that... | askscience | https://www.reddit.com/r/askscience/comments/8nqm8y/why_is_the_brain_divided/ | {
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"dzxnmfs",
"dzxo10v",
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"dzxwt1z",
"dzxzv7j",
"dzy5623",
"dzy6fwo",
"dzy88qg",
"dzybpr4",
"d... | [] | [
"https://en.wikipedia.org/wiki/Longitudinal_fissure",
"https://en.wikipedia.org/wiki/List_of_common_misconceptions#Brain",
"https://www.reddit.com/r/askscience/search?q=brain+divided&restrict_sr=on"
] | [
[
"https://en.wikipedia.org/wiki/Bilateria"
],
[
"https://youtu.be/wfYbgdo8e-8"
],
[
"https://www.frontiersin.org/articles/10.3389/fpsyg.2013.00939/full"
],
[],
[],
[
"https://www.quizover.com/ocw/mirror/col11496/m46535/1302_Brain_Vesicle_DevN.jpg"
],
[],
[],
[],
[],
[
... | |
70keyt | Why did Bavaria, a proudly South German state, end up in the sphere of the Prussian-led North German Confederation (and eventually the German state) instead of the Austrian one? | I could be off base here, but it seems to me that Bavaria and its adjacent regions have more in common, culturally, with Austria than they do with Protestant majority Northern Germany - especially in a historical context. Why would they - and similar South German Catholic states like Baden - choose to side with somethi... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/70keyt/why_did_bavaria_a_proudly_south_german_state_end/ | {
"a_id": [
"dn4bgmx"
],
"score": [
91
],
"text": [
"Well Bavaria didn't exactly \"choose\" to join the North German Federation. To understand how the North Germany Confederation came to be we have to start with the Holy Roman Empire. It consisted of a lot of loose fiefs, baronies, kingdoms, etc a... | [] | [] | [
[]
] | |
etrjgi | The Manhattan Project required 18.9 million pounds of uranium ore. The Little Boy nuclear bomb used 141 pounds of enriched uranium. Where did it all go, and at what stage? | I've done some reading on Wikipedia about the basic process of enriching uranium for the purpose of nuclear weapons production, but the sheer scale of the raw input for the Manhattan Project really surprised me. How was all that uranium ore used? How much of it was directly required for the creation of that first nuke,... | askscience | https://www.reddit.com/r/askscience/comments/etrjgi/the_manhattan_project_required_189_million_pounds/ | {
"a_id": [
"ffij6uq",
"ffikfom",
"ffj9tg5",
"ffjdkmq"
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"score": [
142,
19,
3,
17
],
"text": [
"First of all \"uranium ore\" is about 2% uranium (and that's considered high-grade ore). See: _URL_0_\n\nNext, natural uranium is only 0.72% ^(235)U, which is the isotope neede... | [] | [] | [
[
"https://geoinfo.nmt.edu/resources/uranium/where.html"
],
[
"https://www.fairewinds.org/uranium-mining"
],
[],
[
"http://blog.nuclearsecrecy.com/2014/09/05/general-groves-secret-history/"
]
] | |
wqslt | what are the benefits of rooting my android phone? | Ive been told its a good thing to do... But dont understand why. ELI5. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/wqslt/eli5_what_are_the_benefits_of_rooting_my_android/ | {
"a_id": [
"c5fpclz",
"c5fpty5"
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"score": [
2,
2
],
"text": [
"Rooting your phone means you removing restrictions imposed upon you by the phone manufacturer or your carrier. \n\nYou can uninstall apps that could not have been done earlier\nYou can install custom ROM's that change the lo... | [] | [] | [
[],
[]
] | |
ojwdo | How did a ball of ice named Comet Lovejoy survive a pass through the sun's atmosphere? | _URL_0_
Cmon reddit... you are better than these "we don't know" nasa and navy guys, aren't you? | askscience | http://www.reddit.com/r/askscience/comments/ojwdo/how_did_a_ball_of_ice_named_comet_lovejoy_survive/ | {
"a_id": [
"c3huj7f",
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"score": [
4,
10,
2
],
"text": [
" > \"A significant fraction of that mass would have been lost during the encounter. What's left is probably much smaller than the original comet.\"\n\nFrom the article.",
"Well those NASA guys do ... | [] | [
"http://science.nasa.gov/science-news/science-at-nasa/2011/16dec_cometlovejoy/"
] | [
[],
[],
[]
] | |
2nf2vi | elia5: what would happen if i used a compass made on earth to a different planet? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2nf2vi/elia5_what_would_happen_if_i_used_a_compass_made/ | {
"a_id": [
"cmd21pa"
],
"score": [
7
],
"text": [
"If the planet had a magnetic field, it would point to magnetic north. Mind you, magnetic north may not be near the poles. A planet may not even have a field, at which point, the compass wouldn't align itself to anything except perhaps the largest... | [] | [] | [
[]
] | ||
3kcblm | the difference between: roma, romani, and romanian. | I have been corrected by a few people that Roma and Romani are not the same. So I was just hoping for a little clarity. Thanks! | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3kcblm/eli5_the_difference_between_roma_romani_and/ | {
"a_id": [
"cuwdq1i",
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"score": [
8,
6
],
"text": [
"Roma and Romani are, in fact, the same. You can be pedantic about the exact places where each term should be used but the fact is that in common usage they're interchangeable. Romanian is completely unrelated.",
"Roma an... | [] | [] | [
[],
[]
] | |
5uyczi | in nutritional science, why are things that are considered healthy one day suddenly seen as unhealthy the next day, and vice versa? | Some examples:
* Saturated fats being considered unhealthy, but then it turns out they don't really pose a risk.
* Carbs being the most important staple of one's diet, but suddenly they're the worst thing one can consume.
* Salt intake which should be limited as much as possible, but now it turns out it's not a big de... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5uyczi/eli5_in_nutritional_science_why_are_things_that/ | {
"a_id": [
"ddxt15e",
"ddxv5z2",
"ddxxss6",
"ddy2pbr"
],
"score": [
4,
3,
2,
5
],
"text": [
"In short, it's because we don't know everything about the thing and how your body deals with it. When scientists that study this stuff discover a new thing (saturated fats in exces... | [] | [] | [
[],
[
"Cracked.com"
],
[],
[]
] | |
36dqb1 | why does a gallon of whole milk expire long before a carton of half and half or heavy whipping cream? | I have highland brand whole milk bought a week ago that expires May 27th and some fair life organic or whatever nonfat milk that expires July 9th, and some half and half that goes bad June 30th. Bought about the same time. But they last way longer than gallons of milk. Why is this? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/36dqb1/eli5_why_does_a_gallon_of_whole_milk_expire_long/ | {
"a_id": [
"crd2bjr",
"crd34wh"
],
"score": [
5,
2
],
"text": [
"Your nonfat stuff lasts longer because a lot of the organic milks these days are ultra-pasteurized (i.e. they go through a longer bacteria killing process than your run-of-the-mill gallon of milk).\n\nThe half-and-half and w... | [] | [] | [
[],
[]
] | |
36dukk | how can comcast can charge me a ridiculous price for 30mbs internet but at best i get 3mbs down or up? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/36dukk/eli5_how_can_comcast_can_charge_me_a_ridiculous/ | {
"a_id": [
"crd2mlc",
"crd2qv2",
"crd2t0w"
],
"score": [
7,
2,
3
],
"text": [
"Well I'm. Pretty sure you're paying for 30 MegaBits where as your download is MegaBytes.... The mathematics and how it's measured or how that works is still beyond me and I'd like to know how those numb... | [] | [] | [
[],
[],
[]
] | ||
7yg24b | Why can’t we increase the wattage of chargers to make devices charge faster? | askscience | https://www.reddit.com/r/askscience/comments/7yg24b/why_cant_we_increase_the_wattage_of_chargers_to/ | {
"a_id": [
"dugslba",
"dugv84d"
],
"score": [
11,
2
],
"text": [
"The rate of charge is primarily limited by the battery itself. It gets hot as it absorbs energy due to a variety of factors. This tends to increase with age too. Many devices do very little to remove heat from batteries so ... | [] | [] | [
[],
[]
] | ||
1cwzwr | what is going to happen to julian assange? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1cwzwr/eli5_what_is_going_to_happen_to_julian_assange/ | {
"a_id": [
"c9kxol6"
],
"score": [
3
],
"text": [
"Julian Assange is wanted in Sweden for questioning about allegations of rape.\n\nSweden have requested his extradition from Britain, and the British police have indicated they intend to fulfil this request. Assange has been granted asylum by Ecua... | [] | [] | [
[]
] | ||
3nitrt | can lawyers lie in court to reveal the truth? | An example is in Phoenix Wright:Ace Attorney Trials and Tribulations where he lies about the contents of a bottle in court to make the (unsuspecting) criminal say out loud the characteristics of the real bottle of poison, thus proving he knew about the poison and making him guilty. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3nitrt/eli5_can_lawyers_lie_in_court_to_reveal_the_truth/ | {
"a_id": [
"cvogzhk",
"cvoie9e",
"cvop5rp"
],
"score": [
39,
23,
2
],
"text": [
"No. Everything a lawyer says has to be true, however they can leave out details. So if Phoenix were to say \"the short bottle\" when the defining characteristic was its bright color, that would work.... | [] | [] | [
[],
[],
[]
] | |
f27sz3 | why do video game cutscenes need ti be rendered as its being played. | Isnt it just better to have many videos of outcomes and play the specific one relying on fhe situation? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f27sz3/eli5_why_do_video_game_cutscenes_need_ti_be/ | {
"a_id": [
"fhas2n2",
"fhas8kv",
"fhau5cx"
],
"score": [
12,
2,
3
],
"text": [
"Storing pre-rendered cutscenes can take up a lot of disk space. \n\nA few console generations, this was a huge advantage CD/DVD based game media had over cartridges (at the expense of read speeds):... | [] | [] | [
[],
[],
[]
] | |
9gdown | why do some moisturisers have alcohol in them if alcohol dries skin out? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9gdown/eli5_why_do_some_moisturisers_have_alcohol_in/ | {
"a_id": [
"e63ki06",
"e63piwm"
],
"score": [
7,
3
],
"text": [
"Alcohol is a very good solvent. It also dries in air fairly quickly. So, an alcohol-based moisturizer contains some moisturizing compounds, held in suspension. \n\nWhen you apply it, the alcohol portion evaporates* into the ... | [] | [] | [
[],
[]
] | ||
jkk0s | - the shape of the universe. | To my knowledge the universe is not infinite but also if it were possible to fly forever we could never reach the end of it. How so? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/jkk0s/eli5_the_shape_of_the_universe/ | {
"a_id": [
"c2cvg2w",
"c2cvg2w"
],
"score": [
3,
3
],
"text": [
"The shape of the universe depends on the amount nof energy present within the universe. It is theorized that there are quite a few different universe shapes and behhaviors. Ours is, as of now, considered to be flat and infin... | [] | [] | [
[
"http://en.m.wikipedia.org/wiki/Shape_of_the_Universe"
],
[
"http://en.m.wikipedia.org/wiki/Shape_of_the_Universe"
]
] |
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