q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
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values | url stringlengths 4 132 | answers dict | title_urls list | selftext_urls list | answers_urls list |
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255cfu | what happens if someone is bit by a coral snake in the united states? | I understand that there is no more production of Coral Snake anti-venom in the United States, what is the standard procedure for Coral Snake bites? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/255cfu/eli5what_happens_if_someone_is_bit_by_a_coral/ | {
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"There hasn't been production of any coral snake antivenin for over ten years, and supplies are dwindling. I think the standard procedure is to use what little remains in inventory.\n\nWhat happens after those run out is anyb... | [] | [] | [
[],
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65dq28 | is there any way to test a nuclear weapon without without being detected? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/65dq28/eli5_is_there_any_way_to_test_a_nuclear_weapon/ | {
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"You can detect a nuclear explosion with a seismograph, even if you had a magic nuke that didn't release incredible amounts of light and heat visible to every satellite in the area.",
"Not that is pu... | [] | [] | [
[],
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fh107x | when light passes through a transparent object, do the photos simply pass between the atoms or are they absorbed by the atoms and re-emitted? | When it comes to light passing through objects I wasnt sure if the light actually passes between the atoms or if it is absorbed by the atoms and is then emitted by the atoms in sequence until its passes through it entirely. Why else would lights speed slow in various mediums?
Similarly, when light is reflected, are th... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fh107x/eli5_when_light_passes_through_a_transparent/ | {
"a_id": [
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"text": [
"So, it's sorta pretty weird. We have to remember that light is also a wave, and the way it travels through matter is wave-like more than it is particle light.\n\nIf you aren't familiar, waves obey the property of superposition - that is that the... | [] | [] | [
[
"https://www.youtube.com/watch?v=CUjt36SD3h8",
"https://www.youtube.com/watch?v=EIqKG5TiSYs&t=6s"
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5499cl | Can brain damage alter what a person sees? | I know that our senses (eyes, ears, etc) just relay information to the brain, and the brain is what actually does the sensing (seeing, hearing, etc). So can damage to a specific part of the brain alter how the brain understands the data from our senses? Moreover, is it possible to change how the brain interprets the in... | askscience | https://www.reddit.com/r/askscience/comments/5499cl/can_brain_damage_alter_what_a_person_sees/ | {
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"Yes.\n\nMost often this will be \"negative\" phenomena—a loss of some aspect of perception. This can be loss of depth information (*astereoscopy*), loss of ... | [] | [] | [
[],
[],
[],
[],
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] | |
3n29l6 | Why were old ads so verbose? | This might be a bit of an off-the-wall question, but I've always sort of wondered why old ads (like [this candy ad from 1925](_URL_0_)) sometimes feature multiple paragraphs of text, which you'd never see in a modern ad. Were we just bad at advertising back then, or maybe is related to changing media / media consumptio... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3n29l6/why_were_old_ads_so_verbose/ | {
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"Having briefly been a PR practitioner I might be able to point to a few things, some of which might challenge the basis of your question, some of which will help answer it.\n\n1. Were we just bad at advertising back then?\n\nA little bit. Yes. O... | [] | [
"https://www.flickr.com/photos/typetive/6384269131"
] | [
[]
] | |
2yzcxi | why do some transactions process in half a second, and others take 3 days? | It drives me fucking nuts sometimes that I'll wake up on Monday morning and there's $200 less in my bank account than I thought. I'll go back through my bank account and there will be a bill I paid on thursday last week that just processed. On the other hand, I filled up my car on sunday and that appeared immediately.
... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2yzcxi/eli5_why_do_some_transactions_process_in_half_a/ | {
"a_id": [
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"text": [
"How banks work. What's easier. Bank A: Send me $2.37 for Joes purchase. Bank B: send me $3.5 for Bibs purchase. Thousands of times a second. \n\nOr\n\n\nEnd of day: Bank A: Your clients owe me 3 billion. Bank B: your clients owe me 2 billion, so ... | [] | [] | [
[]
] | |
4ii6fl | Are we certain that no humans lived in North America prior to crossing the Bering Strait? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4ii6fl/are_we_certain_that_no_humans_lived_in_north/ | {
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"text": [
"Not to discourage you from posting here, but you may find more people ready to comment on this question by crossposting to r/AskAnthropology"
]
} | [] | [] | [
[]
] | ||
c1lrkb | Do astronauts have to wear sun cream in space i.e Like on the ISS? | They're closer to the sun so you'd think so right? It's also bugging me. | askscience | https://www.reddit.com/r/askscience/comments/c1lrkb/do_astronauts_have_to_wear_sun_cream_in_space_ie/ | {
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"They're not really any closer to the sun: the ISS is in a low earth orbit, only 400km above sea level. That's on the order of one thousandth of the distance to the moon, or one millionth of the distance to the sun.\n\nIt's true that they're outsi... | [] | [] | [
[]
] | |
euaqe8 | why does earth have no ring even after exterior body colliding with earth and launching all the debris in space? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/euaqe8/eli5_why_does_earth_have_no_ring_even_after/ | {
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"rings around a planet are really unstable, stuff too close could probably burn up and stuff too far would clump together and make something bigger. The earth probably had a ring when something crashed into it. The 4 gas giants have rings but tho... | [] | [] | [
[
"https://imagine.gsfc.nasa.gov/features/yba/M31_velocity/lightcurve/gravity_example.html"
]
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97kflt | can someone explains what happens to meteors and meterorites? | I know the difference between the two is that the former is burned in the air whereas the latter hits Earth, but what exactly happens to them? As they burn up, they get smaller, but what happens to that burnt up debris? Does it get scattered in the atmosphere; if it does, is it subject to some aerosol osmosis thing? Fo... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/97kflt/eli5_can_someone_explains_what_happens_to_meteors/ | {
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"You basically got it right, most small ones burn up and become dust in the atmosphere, some of which does aerosolize. I always recommend _URL_0_ if you want to see how PM2.5 spreads out across the planet.\n\nThe larger ones ... | [] | [] | [
[
"earth.nullschool.net"
],
[]
] | |
16b63u | Is it true that the effect of fanning yourself (as in with your hands) is actually a net INCREASE in body temperature? | I heard this on the radio today, however the guy wasn't a scientist, he was just reiterating something he had heard. He basically said that when you fan yourself (such as on a hot day with a piece of paper etc) you actually increase your body temperature due to what he referred to as a "fundamental law of physics" | askscience | http://www.reddit.com/r/askscience/comments/16b63u/is_it_true_that_the_effect_of_fanning_yourself_as/ | {
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"text": [
"He was bsing.\n\nMoving your hand generates a small amount of heat. Fanning yourself removes a reasonably large amount of heat. I suspect the net effect is normally cooling since you don't use much energy moving your arm, but it would depend on l... | [] | [] | [
[]
] | |
adjulc | How did the invention of hangul affect the spread of the moveable type in Korea? | The Korean moveable type seems to lack the transformative social impact of Gutenberg's invention despite appearing earlier, and it would appear that the sheer number of Chinese characters was the main limiting factor. Wikipedia has this to say on how the invention of hangul affected printing in Korea:
> A potential s... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/adjulc/how_did_the_invention_of_hangul_affect_the_spread/ | {
"a_id": [
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"text": [
"Hangul is the alphabet created by King Sejong.\n\n & #x200B;\n\nQ. What is the purpose of making Hangul?\n\nMajor. For the people.\n\nMinor. Hangul is easy to learn Chinese characters.\n\nMinor. It was a useful tool for the middle class in real a... | [] | [] | [
[]
] | |
2t1lt7 | Given the theory of space-time in general relativity, does time act differently where there is more or less gravitational effect? | I admit even with the limited grasp I have on physics this doesn't seem to fit... Haven't properly educated myself mathematically, though in the past few years I've been educating myself through books and documentaries on various theories of physics. | askscience | http://www.reddit.com/r/askscience/comments/2t1lt7/given_the_theory_of_spacetime_in_general/ | {
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"text": [
"Time slows down for an observer under the effect of gravity. The stronger the gravitational field, the slower time passes.",
"Whenever this topic comes up, I recommend the book Einstein's Dreams. It's a small book of fi... | [] | [] | [
[],
[]
] | |
2kfecl | why do high school and college football teams have marching bands, but nfl and other sports don't? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2kfecl/eli5_why_do_high_school_and_college_football/ | {
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"The Ravens still have a band, but its not common. It's a tradition for Baltimore, after the Colts left the band stayed behind and represented the cities passion for the football team. When the Ravens ca... | [] | [] | [
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1wiebc | What kind of beer, if any did pirates drink? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1wiebc/what_kind_of_beer_if_any_did_pirates_drink/ | {
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" Only recently has beer been able to travel well. IPA , India Pale Ale, was the first beer that could survive the trip from England to India. I believe that the XXX mark designated a beer that could travel. That is where Double Diamond got their ... | [] | [] | [
[]
] | ||
1u2p4u | Why are horizontal and vertical motion (of particles) independent? | I've taken it on faith since it was taught in secondary school but never thought about why it was true. It makes intuitive sense, there's no reason why should they affect each other in the first place, but I was asked this by a family member recently and couldn't really satisfy him with an answer.
I did try to use the... | askscience | http://www.reddit.com/r/askscience/comments/1u2p4u/why_are_horizontal_and_vertical_motion_of/ | {
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"We define the geometry of our coordinate system such that this is true. In the Cartesian coordinate system the x (horizontal) and y (vertical) directions are orthogonal (at right angles to each other).... | [] | [] | [
[],
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7zan5a | why do large airports all seem to have news station branded convenience stores, and why do these types of stores seem limited to airports? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7zan5a/eli5_why_do_large_airports_all_seem_to_have_news/ | {
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"text": [
"Some years ago, Hudson News became a chain if newsstands in airports selling magazines, newspapers, and the like. They expanded to become convenience stores.\n\nSo their top competitor decided to copy the \"news\" theme and made a deal with CNBC.... | [] | [] | [
[
"https://tedium.co/2016/08/16/airport-stores-named-after-tv-networks/"
]
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2ts96f | why is it common for american houses to have issues with carbon monoxide? | As long as I know in Europe it isn't an issue except for indoor car parks, garages etc. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ts96f/eli5_why_is_it_common_for_american_houses_to_have/ | {
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"text": [
"It is common for American houses to have natural gas furnaces, water heaters, ranges and ovens. If you have any of those in your home in Europe you are equally at risk. ",
"I do not think that carbon monoxide issues are ... | [] | [] | [
[],
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33ylyt | why don't they enclose prisoner cells within a faraday cage? | With how big and serious of a problem prison cell phone use can be: why have we not shielded prison cells (only cells, not the whole prison) from incoming and outgoing cell phone frequencies? It would save lives of many people and disrupt criminal money flow and operations on the outside. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/33ylyt/eli5_why_dont_they_enclose_prisoner_cells_within/ | {
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"text": [
"Some prisons have been known to use jammers to prevent cell-phone use, and that's a huge amount cheaper and easier than is faraday caging the whole area.\n\n"
]
} | [] | [] | [
[]
] | |
iigzf | How come the wind keeps putting out my lighter, but does nothing to the cigarette once it's lit? | askscience | http://www.reddit.com/r/askscience/comments/iigzf/how_come_the_wind_keeps_putting_out_my_lighter/ | {
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"For a few reasons.\n\n1. Solid verse gaseous/liquid fuel. The fuel from your lighter is easily blown and dispersed, which greatly affects its ability to burn. Your cigarette is a solid fuel, and isn't blown away .\n\n2. ... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Potassium_nitrate"
]
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1e064e | why do stadiums cost much more to build today than they did ten years ago? | According to [this page](_URL_0_) when M & T Bank Stadium was built in 1998, it cost $226 million while MetLife Stadium cost $1.6 billion in 2009. Sun Life Stadium's (planned and rejected) renovations were even slated to cost $350 million. What is the reason for the drastic increases in costs? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1e064e/eli5_why_do_stadiums_cost_much_more_to_build/ | {
"a_id": [
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"Partially inflation and partially they just get bigger and fancier and it's kind of a competition to have the most kick ass stadium that they spend more and more money.\n\nEdit: taking a shot at the repair remark, you didn't mention what kind of ... | [] | [
"http://prod.static.vikings.clubs.nfl.com/assets/docs/stadium/DES-recent-nfl-stadiums.pdf"
] | [
[]
] | |
s6mob | I am swimming in a pool of water on the moon. How will the lower gravity affect the way I can swim? | Assume I am in a 1 atm chamber so I can breathe freely and there is a large pool. Does the lower gravity change the rate at which I would float and sink in the water? Would the pressure of the water as I go down be affected such that I could dive deeper or swim up to the surface faster or more easily?
EDIT 1: I just w... | askscience | http://www.reddit.com/r/askscience/comments/s6mob/i_am_swimming_in_a_pool_of_water_on_the_moon_how/ | {
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"pool story, bro.",
... | [] | [
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5l90ql | Any WWII historians out there, can you identify this medal? It was given to a civilian who worked in an evasion line in Belgium that helped Allied airmen escape the occupying German forces. | _URL_0_
Granted, this is from a 1970s TV series called "Secret Army" but it is apparently based off of real events. Is this a real medal, and if so, can you tell me what it is? It may be Belgian or British, as the man holding it was Belgian working for London. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5l90ql/any_wwii_historians_out_there_can_you_identify/ | {
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"That's the Belgian War Cross. It was given to soldiers and civilians for showing bravery in actions against the enemy.\n\nOn second sight: some things are off. The cross is not exactly the same (_URL_0_) and the middle figure should be a rampant ... | [] | [
"http://imgur.com/BDmT5Qy"
] | [
[
"http://imgur.com/a/bx1om"
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sk2a9 | why does good food taste bad and bad food taste good? (bonus for asking it like a 5 year old?) | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/sk2a9/eli5_why_does_good_food_taste_bad_and_bad_food/ | {
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"Because our brains evolved during times when there was less food.\n\nNow we use hi-tech methods to make a truck-load of anything we want to eat.\n\nSo the same mechanisms that make us want to eat more of less available stuff... | [] | [] | [
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54yt7e | why do all trucks' wheel assemblies stick out on front tires, but don't on rear tires? | Whether you are talking about [dump trucks](_URL_3_), [18-wheelers](_URL_2_), [box trucks](_URL_1_), or [other work trucks](_URL_0_), it seems that all of them have wheel hub assemblies that stick out from the tire in the front and don't in the back.
Why is there this difference? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/54yt7e/eli5why_do_all_trucks_wheel_assemblies_stick_out/ | {
"a_id": [
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"text": [
"It's so they can use the same size lugs on the front and back.\n\nThe ones on the back need to be long enough to accommodate two sets of wheels. The front only has one set, so they stick out "
]
} | [] | [
"http://www.mheby.com/wp-content/uploads/2013/03/grain-truck.png",
"https://upload.wikimedia.org/wikipedia/commons/6/62/Isuzu_box_truck.jpg",
"http://www.18wheelertruckandtrailer.com/siteart/truck1.jpg",
"http://st.motortrend.com/uploads/sites/5/2012/04/2012-Ford-F-650-Dump-Truck-rear-view-up.jpg"
] | [
[]
] | |
3anldo | If the sun converts hydrogen to helium where does it get the neutrons to do so? | I'm a pretty sciency guy but my 12 year old daughter has stumped me with a few question.
If the sun starts out as a dense ball of hydrogen (one proton and one electron) and uses nuclear fusion to convert it into helium (2 protons, 2 neutrons, 2 electrons), where does it get the neutrons?
Also if the atoms in the su... | askscience | http://www.reddit.com/r/askscience/comments/3anldo/if_the_sun_converts_hydrogen_to_helium_where_does/ | {
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"The initial protons come about from proton-proton collisions. Usually the two bound protons decay by falling apart, but rarely through the weak force, beta+ decay occurs converting one proton into a ... | [] | [] | [
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"https://en.wikipedia.org/wiki/Proton–proton_chain_reaction"
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2cvu1j | why do i keep hearing that obama doesn't follow the constitution? what exactly is he doing that is unconstitutional? | UPDATE: I now get the basic premise. Thank you, everyone. However, this has also confused me as to how many politics in America work (or don't in some cases). I'm so glad I have marketable talents and education in other areas, 'cause I'd never make it in politics. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2cvu1j/eli5_why_do_i_keep_hearing_that_obama_doesnt/ | {
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"He has used a device known as the \"executive order\" to create policy and law without con... | [] | [] | [
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"http://en.wikipedia.org/wiki/List_of_United_States_federal_executive_orders_13489_and_above",
"http://en.wikip... | |
8h4wcm | why was scurvy more likely to occur at sea (vs land)? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8h4wcm/eli5_why_was_scurvy_more_likely_to_occur_at_sea/ | {
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"Scurvy was brought on by a lack of Vitamin C. And while fruits and other foods containing it were common parts of people's diets on land, such foods are difficult to preserve over... | [] | [] | [
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3wptpq | How scientific is the idea that communicating is 80% body language, 15% tone and 5% actual words (or whatever the numbers may be, I've seen them a couple of different ways)? | I've heard this a few times and it always bugged me that the words I choose to use may be ignored because I'm standing funny or something. I wonder if people use this idea as a crutch or something like that. | askscience | https://www.reddit.com/r/askscience/comments/3wptpq/how_scientific_is_the_idea_that_communicating_is/ | {
"a_id": [
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"text": [
"First of all, I have no real knowledge on the matter, but since you havn't gotten an answer, ill give you my thinking.\n\nTo me its completely nonsense, as you can easily think of a case of 100% body language (sign language) and 0% body language ... | [] | [] | [
[
"http://www.reactiongifs.us/wp-content/uploads/2013/03/i_dont_even_ndt.gif"
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ea2e4v | Why did the flintlock pistol/bayonet combo replace pikes and matchlocks? | What benefits were there to the former that made such a massive transition worthwhile? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/ea2e4v/why_did_the_flintlock_pistolbayonet_combo_replace/ | {
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"score": [
6,
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],
"text": [
"Soldiers armed with flintlock muskets and bayonets were what replaced infantry armed with matchlocks and pikemen. The short answer would be, of course, that they replaced them because troops with them tended to win the bat... | [] | [] | [
[],
[]
] | |
6yvjug | how do motorcycles differ when they have the same kw (hp) but different ccm? | I am looking to do my motorcycle license, and will be allowed to drive a bike up to 35 Kw (48ps). But there are some bikes with 300ccm and some up to 700ccm, but they all have 35 Kw. What is the difference and what will I notice? (e.g. sound, acceleration, mileage, etc..) I am completely clueless. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6yvjug/eli5_how_do_motorcycles_differ_when_they_have_the/ | {
"a_id": [
"dmqgdb1"
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"score": [
3
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"text": [
"The smaller engine will rev higher to produce the same power as the larger one. Acceleration will be better on the larger engine because it produces more torque, which is the force that gets you moving (this is a generalized statement as gearing ... | [] | [] | [
[]
] | |
2klpb6 | What factors come into play with the abundance of elements in the universe? | Hydrogen and Helium are the most and the second most abundant elements in the universe respectively, but Oxygen is third. My understanding is that most of the elements heavier than [H] and [He] are created through astronomical events such as the goings on within a star.
Why is Oxygen not the 8th most abundant element... | askscience | http://www.reddit.com/r/askscience/comments/2klpb6/what_factors_come_into_play_with_the_abundance_of/ | {
"a_id": [
"clmzc19"
],
"score": [
2
],
"text": [
"Theoretically, helium and hydrogen were the first to form and formed the most because of their simple structure. This was just caused by quarks combining slowly after billions of years. Nuclear fusion breaks down this process and with the death o... | [] | [] | [
[]
] | |
m5nxj | how do you play "street" craps? | Not sure if it's different from casino craps.
I'm watching a Bronx Tale where Sonny has C throw. I was wondering how the rules go. I've always wanted to know. Looked up once and it didn't make much sense in the article. Maybe a Redditor could dumb it down. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/m5nxj/eli5_how_do_you_play_street_craps/ | {
"a_id": [
"c2yatcu",
"c2yatcu"
],
"score": [
2,
2
],
"text": [
"The most common form of street craps is [Cee-lo](_URL_0_). There are many variations of the rules, but according to Wikipedia, the base rules are as follows:\n\n\"*The constants include the number of dice used, which is alw... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Cee-lo"
],
[
"http://en.wikipedia.org/wiki/Cee-lo"
]
] | |
1rwm6e | why is it meaningless to say if it is 20 degrees oc, that it is twice as hot as if it was 10 degrees oc? | I understand the variable is not ratio, as it's absolute 0 (0oC is not the lowest possible temperature) but I don't understand the answer to my question. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1rwm6e/eli5_why_is_it_meaningless_to_say_if_it_is_20/ | {
"a_id": [
"cdrnf98",
"cdro2sx"
],
"score": [
5,
2
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"text": [
"Convert Celsius to any other temperature measurement unit and you'll see why it is meaningless. \n \n10 degrees Celsius = 50 degrees Fahrenheit \n20 degrees Celsius = 68 degrees Fahrenheit \n \nI hope it makes it a bit ... | [] | [] | [
[],
[]
] | |
15n3tm | What really happened in North America immediately before Columbus arrived? | So, according to [some guy in Ask Reddit](_URL_0_) (always a great place to find reliable sources) a plague wiped out "98%" of Native Americans before Columbus arrived. I find this really difficult to believe and can't even begin to wrap my mind around that level of cataclysm. The Black Death only killed 1/3 of Europea... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/15n3tm/what_really_happened_in_north_america_immediately/ | {
"a_id": [
"c7nykji",
"c7nym8g",
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"score": [
6,
2,
12
],
"text": [
"Many Native Americans were killed by diseases brought to the continent by the Europeans. And, because diseases spread faster than colonists, many tribes were wiped out before the Europeans actually fou... | [] | [
"http://www.reddit.com/r/AskReddit/comments/15m56c/historianshistory_buffs_of_reddit_what_are_some/c7nplkp"
] | [
[
"http://www.reddit.com/r/AskHistorians/wiki/nativeamerican#toc_3"
],
[
"http://www.allmystery.de/dateien/gw67147,1288250002,013-Kolumbus-Columbus-Colombo-routen.jpg",
"http://en.wikipedia.org/wiki/Bartolom%C3%A9_de_las_Casas#A_Short_Account_of_the_Destruction_of_the_Indies"
],
[
"http://ge... | |
38qu46 | what's going on with /r/thebutton | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/38qu46/eli5_whats_going_on_with_rthebutton/ | {
"a_id": [
"crx3z6x"
],
"score": [
2
],
"text": [
"It hit 0 without anyone pushing the button. It's over, the subreddit is now closed (archived).\n\nThis time, for real. No server crashes, it's really, really over."
]
} | [] | [] | [
[]
] | ||
1mzkap | how long does it take muscle to form after exercise? | After strenuous exercise and assuming proper nutrition how long does it take for muscle to form or grow? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1mzkap/eli5_how_long_does_it_take_muscle_to_form_after/ | {
"a_id": [
"cce201b",
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"score": [
4,
5,
2
],
"text": [
"This is one of the better questions on this sub in the past month or so. I'm also curious about this.",
"When you lift weights, microscopic \"tears\" form in the fascia of your muscle tissue. This i... | [] | [] | [
[],
[],
[]
] | |
n2i42 | Why aren't we mining asteroids? | I understand the obscene costs involved, but the amount of materials in even just a few decent sized space rocks could rake in huge profits, as well as supply the planet with enough material to sustain itself for centuries (and thats being pessimistic). | askscience | http://www.reddit.com/r/askscience/comments/n2i42/why_arent_we_mining_asteroids/ | {
"a_id": [
"c35qvss",
"c35qyzl",
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"score": [
8,
2,
3,
8,
2,
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"text": [
"The costs are still way more than the profits. Plus there's a serious risk involved, so getting investors to fund an asteroid mining mis... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | |
2d7yqy | why are there riots in ferguson, missouri? is this only because of the teen shot dead by police or are there any other causes? | A lot of people are talking about this on Twitter, but I am unable to find much information besides a teen that was shot dead. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2d7yqy/eli5_why_are_there_riots_in_ferguson_missouri_is/ | {
"a_id": [
"cjmyjht",
"cjn1j2m",
"cjn7e03"
],
"score": [
2,
8,
3
],
"text": [
"Here's the live stream if you're interested: _URL_0_",
"There was a peaceful vigil for the teenager who was shot. Somehow the vigil got violent and a riot broke out.\n\nThe rioters were *not* upset ... | [] | [] | [
[
"http://www.reddit.com/live/tdrph3y49ftn/"
],
[],
[]
] | |
4g44db | Where did Michelangelo and the old Greek and Roman sculptors get their models? Did your average Joe look like a bodybuilder 500-2000 years ago? | These sculptures are totally jacked by modern standards, and a modern bodybuilder would have to very deliberately lift weights and pay close attention to nutrition. Even the "strongmen" from 100 years ago don't look nearly as impressive. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4g44db/where_did_michelangelo_and_the_old_greek_and/ | {
"a_id": [
"d2egml7"
],
"score": [
6
],
"text": [
"No. These were idealized concepts of male beauty and strength. So while the statues themselves are impressive (and IMHO beautiful), they are not meant to be physical representations. For example, the pose of the Riace Bronze men. These two bronze... | [] | [] | [
[]
] | |
27yn5k | the difference in gravity between a star, and that same star becoming a black hole. | So, what I learned was that gravity is determined by mass, not density. Sometimes you meet the occasional clever guy that counters this by saying "but light can't escape black hole, and that's because all the matter collapsed in on the star, making much more dense, therefore having a greater gravitational pull".
I pro... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/27yn5k/eli5_the_difference_in_gravity_between_a_star_and/ | {
"a_id": [
"ci5n6kq",
"ci5ndc0",
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"score": [
6,
2,
2
],
"text": [
"Your explanation isn't wrong.\n\nThe problem is we tend to consider objects with a specific mass as if they have no volume and ALL their mass is at one point. If you think of a black hole and a star li... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Shell_theorem"
],
[]
] | |
9yiqx9 | what’s the difference if any between working class and middle class? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9yiqx9/eli5_whats_the_difference_if_any_between_working/ | {
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4,
6,
4,
2
],
"text": [
"Working class are people who have jobs, but typically low pay, low education jobs where they are just above poverty levels, not on welfare... but just barely ... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
20n7v8 | when high-level world leaders (like obama and putin) talk to each other on the phone, do they speak in the same language or do they need a translator? and if they need a translator, isn't that a serious security concern that someone knows everything they're saying? | And how do both countries agree on a common translator that they can both trust? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/20n7v8/eli5_when_highlevel_world_leaders_like_obama_and/ | {
"a_id": [
"cg4vwo2",
"cg4w07b",
"cg501kw"
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"score": [
7,
68,
23
],
"text": [
"I think the need for a translator greatly outweighs any security concerns. ",
"The translator only has to be trusted by the party that hires him. Usually Obama brings a Russian translator, and Put... | [] | [] | [
[],
[],
[]
] | |
1eq0kl | Did the Nazis negotiate with any official party abroad for the deportation of the jews prior to 1939? | First off, let me say that I'm not trying to stir up some Nazi propaganda by underhandedly asking a loaded "innocent" question.
I've been discussing the late Nazi grandmother of a friend, who held the conviction that the Nazi regime was actually trying to get rid of the jews in a "civil" (...) way before resorting to ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1eq0kl/did_the_nazis_negotiate_with_any_official_party/ | {
"a_id": [
"ca2nmkj"
],
"score": [
4
],
"text": [
"Sort of. They wanted it, and drew up plans for mass deporation to Madagascar. But the logistics would've been nightmarish, and IIRC would've required the ships of the Royal Navy, so it only would've worked after Britain being defeated. It wasn... | [] | [] | [
[]
] | |
903xe0 | why do humans sometimes cant seem to remember whether they did something or not? | Especially the mundane things like remembering things like social security numbers/phone numbers/what I had for my meals.
| explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/903xe0/eli5_why_do_humans_sometimes_cant_seem_to/ | {
"a_id": [
"e2nk6zw",
"e2nlll1",
"e2npyel"
],
"score": [
4,
3,
2
],
"text": [
"Isn’t it simply because we don’t pay attention? If you put down your keys absentmindedly it’s like overlooking something obvious: You’ll remember neither because you didn’t pay attention.",
"The pur... | [] | [] | [
[],
[],
[]
] | |
2totq4 | What are the differences of a Sherman tank and a Tiger tank? | After watching Fury, I recalled seeing a documentary about tanks a long while back.
What I'm wondering are the pros and cons of the Sherman and Tiger in relation to the time it was being used in Fury.
In my perspective the Sherman seemed weaker than the Tiger.
But is that true? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2totq4/what_are_the_differences_of_a_sherman_tank_and_a/ | {
"a_id": [
"co0yqlj",
"co11vic"
],
"score": [
4,
3
],
"text": [
"This question comes up quite a bit. You might try [this link](_URL_0_) and [this link](_URL_1_) for your answer.",
"Assessing the \"value\" of a tank is far more complicated than people think. In the case of a tank you h... | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/2sjhq9/why_were_us_tanks_m4_sherman_still_inferior_to/",
"http://www.reddit.com/r/AskHistorians/comments/1x5lis/ive_heard_several_times_that_the_m4_sherman_tank/"
],
[]
] | |
cy87lq | Why can't we synthesize the top shelf, super expensive, 40 years old scotch in the lab? Is there anything about the scotch only achievable by aging it more? | askscience | https://www.reddit.com/r/askscience/comments/cy87lq/why_cant_we_synthesize_the_top_shelf_super/ | {
"a_id": [
"eyr62ur",
"eyt063f"
],
"score": [
17,
7
],
"text": [
"You could theoretically replicate expensive liquors in the lab, but we’re talking about a large amount of molecules you would need to add in a particular ratio to get the same result. This would be crazy expensive and in mo... | [] | [] | [
[],
[]
] | ||
6i63j2 | Why has (almost?) every currency lost so much value in the last century / last few decades? | A few hundred pound or dollars used to be an incredible amount in the 19th century, why did we let inflation take place so much to the point where pennies are near worthless in most if not all western currencies?
Was it to balance out unemployment, or just a part of a greater economic process? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6i63j2/why_has_almost_every_currency_lost_so_much_value/ | {
"a_id": [
"dj3t7d8",
"dj3w7nr"
],
"score": [
4,
13
],
"text": [
"You may want to consider asking this in /r/Economics or /r/AskEconomics if you don't get an answer here. They may be able to provide you with answers related more to economic theory.",
"A history of monetary policy is n... | [] | [] | [
[],
[]
] | |
go49t | What chemical property makes a drug 'addictive' | What makes opiates highly addictive for example, and other organic molecules not. What chemical interaction with the brain or molecular functional group determines this? Thanks | askscience | http://www.reddit.com/r/askscience/comments/go49t/what_chemical_property_makes_a_drug_addictive/ | {
"a_id": [
"c1p11ig",
"c1p1adb"
],
"score": [
2,
4
],
"text": [
"Opiates activate the brain's [reward system](_URL_0_):\n\n > The mesolimbic pathway plays the major role, and goes from the ventral tegmental area via the medial forebrain bundle to nucleus accumbens, which is the primary r... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Reward_system"
],
[
"http://en.wikipedia.org/wiki/Receptor_theory"
]
] | |
2zcl50 | Could a planet made entirely of metal achieve a stable orbit around a magnetar? | A [magnetar](_URL_0_) is a neutron star that emits an extremely powerful magnetic field, so could a metal planet orbit around it, or would the combined force of magnetism and gravity just suck it in? | askscience | http://www.reddit.com/r/askscience/comments/2zcl50/could_a_planet_made_entirely_of_metal_achieve_a/ | {
"a_id": [
"cpinx0t"
],
"score": [
2
],
"text": [
"See [this past thread](_URL_1_).\n\nThere can be no stable orbit in your configuration - see [Bertrand's theorem](_URL_0_)."
]
} | [] | [
"https://en.wikipedia.org/wiki/Magnetar"
] | [
[
"http://en.wikipedia.org/wiki/Bertrand%27s_theorem",
"http://www.reddit.com/r/askscience/comments/2mmhku/in_space_can_magnetic_material_orbit_a_magnet/"
]
] | |
298i8k | Was there any connection between Mesoamerica and the Caribbean? | I recently learned that the Tainos also played a ball game ("batey"), and so I wondered in which extent these two worlds knew each other. I'm also interested in any interactions between the Caribbean and the rest of their neighbourhood. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/298i8k/was_there_any_connection_between_mesoamerica_and/ | {
"a_id": [
"cij47qf",
"cij4gah"
],
"score": [
3,
2
],
"text": [
"I've heard some talk about it, but I haven't been able to find much. It seems they had extensive coastal trade routes and used some coastal islands as trading outposts, but they were hesitant to travel farther out than Guan... | [] | [] | [
[],
[
"http://research.famsi.org/aztlan/uploads/papers/Canter-Yucatan-Channel-and-Trade.pdf",
"http://www.ncbi.nlm.nih.gov/pubmed/11427174"
]
] | |
34qd1a | Why do guns have such bizarre calibers? | Everything is in this weird hundreds of millimeters or thousands of inch tolerances, and it just baffles me. Why .308 instead of .300? 5.56mm? Why not 5mm or 6mm? And, I know it's the same size as .223, but still, why not .25? It's all this weird mishmash of calibers, and that's not even discussing the weirdness o... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/34qd1a/why_do_guns_have_such_bizarre_calibers/ | {
"a_id": [
"cqx4dpy",
"cqx56cv",
"cqx7fnu",
"cqxemcj",
"cqxubpk"
],
"score": [
42,
96,
398,
16,
4
],
"text": [
"fyi, you may be interested in some previous posts\n\n* [Why have such unique caliber firearms become more popular instead of nice, rounded numbers?](_URL... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/1wbwxn/why_have_such_unique_caliber_firearms_become_more/",
"https://www.reddit.com/r/AskHistorians/comments/1upe0s/how_did_calibers_in_uneven_numbers_come_about/"
],
[],
[],
[],
[
"https://en.wikipedia.org/wiki/7.62×54mmR",
"https://en.wi... | |
3yhcee | why do bagels and donuts have holes? | Why can't they be just completely shut? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3yhcee/eli5_why_do_bagels_and_donuts_have_holes/ | {
"a_id": [
"cydhcfa",
"cydhfu5",
"cydi8ey"
],
"score": [
25,
3,
2
],
"text": [
"They have holes so that they will cook evenly. Without the holes, there would be a doughy center that you wouldn't find appealing. ",
"Donuts do come without a hole. In American tradition, its mad... | [] | [] | [
[],
[],
[
"https://youtu.be/4-BOY7lBqlc?t=1m55s"
]
] | |
floc2 | What is the biological reasoning behind the frustration that you can feel in the middle of your chest? | Why do we feel it only at the chest? Does some sort of acid build up? | askscience | http://www.reddit.com/r/askscience/comments/floc2/what_is_the_biological_reasoning_behind_the/ | {
"a_id": [
"c1guhre",
"c1gupxi",
"c1gusdo",
"c1gv57z"
],
"score": [
2,
5,
20,
2
],
"text": [
"I think it's the effect of adrenaline on your heartrate.",
"This is something I've always wondered as well. Strong feelings of things like frustration, shame, embarrassment an... | [] | [] | [
[],
[],
[],
[]
] | |
6zs0ux | what happens if someone from an uncontacted tribe wants to join society? are they citizens of the country they live in? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6zs0ux/eli5_what_happens_if_someone_from_an_uncontacted/ | {
"a_id": [
"dmxm3xu"
],
"score": [
7
],
"text": [
"Aye. Every country I know of grants citizenship automatically to people born on their soil from ancestors also born on their soil (unless, an exception in some countries, those ancestors were explicitly guest immigrants)."
]
} | [] | [] | [
[]
] | ||
8mmi4k | why do video players always require user action after they start buffering? almost every application, youtube, ifunny, reddit, needs me to press pause and play after loading instead of just starting the video again. why? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8mmi4k/eli5_why_do_video_players_always_require_user/ | {
"a_id": [
"dzosvbj",
"dzou1cc"
],
"score": [
3,
6
],
"text": [
"Do you have any kind of click-to-play addon/plugin installed?",
"Be careful what you wish for.\n\nThe current behaviour, as I understand it, was in response to large numbers of users **complaining** about auto-play; peop... | [] | [] | [
[],
[]
] | ||
1q2e8j | Is there any evidence to the idea that Muhammad established the Hajj as a Pillar of Islam in order to gain support from the powerful merchants that 'ran' the city? | I was having a discussion with someone, and his argument was that the Hajj was established to continue/mimic the earlier 'pagan' tradition of Mecca, but also to gain support from the traders and merchants who would profit enormously off of the annual influx of people.
I was curious, and maybe a little skeptical, beca... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1q2e8j/is_there_any_evidence_to_the_idea_that_muhammad/ | {
"a_id": [
"cd8mxkp",
"cd8nd40"
],
"score": [
4,
18
],
"text": [
"I'm not certain if this is an appropriate top tier comment, but would also like to ask another question on the background of this line of questioning. How much archaeological and other historical evidence and records do we ... | [] | [] | [
[],
[]
] | |
3i4bkf | why does holding the little wire antenna on a clock radio in your hand increase the quality of reception? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3i4bkf/eli5_why_does_holding_the_little_wire_antenna_on/ | {
"a_id": [
"cud5wp9",
"cud65b9"
],
"score": [
2,
2
],
"text": [
"Because then your body becomes part of the antenna. So, instead of a few inches of antenna, there's now five to six feet worth of antenna.",
"You're an antenna. Not a good one, but big. Your bloods and cell fluid have sa... | [] | [] | [
[],
[]
] | ||
2k2skd | what's the healthiest kind of milk and why? | Out of the milks available at the average grocery store, and why? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2k2skd/eli5_whats_the_healthiest_kind_of_milk_and_why/ | {
"a_id": [
"clhfy4b",
"clhm82x"
],
"score": [
2,
2
],
"text": [
"Human breast milk. It's nutritionally complete, but is formulated for babies which grow extremely quickly in their first year or so. Chances are if you drank enough to sustain you there'd be more fat than an adult would requ... | [] | [] | [
[],
[]
] | |
3gup5w | What makes a 'supercomputer' special as compared to a networked server farm? | Supercomputers are built by combining thousands of processing cores together, right? When programming for supercomputers, you already have to be doing massively parallel calculations. Most are using standard, off the shelf commercial grade CPU's and GPU's these days. Its not like the 90's where there was special CPU ar... | askscience | http://www.reddit.com/r/askscience/comments/3gup5w/what_makes_a_supercomputer_special_as_compared_to/ | {
"a_id": [
"cu1q0md",
"cu1q189",
"cu1r2ld",
"cu28fzo"
],
"score": [
4,
2,
29,
3
],
"text": [
"Actually Google did lend one of their supercomputers for calculating the maximum amount of moves needed to solve any rubiks cube scramble (kinda off topic, but I'll put a source w... | [] | [] | [
[],
[
"https://azure.microsoft.com/en-us/services/batch/",
"https://aws.amazon.com/ec2/",
"https://cloud.google.com/compute/"
],
[
"http://www.sandia.gov/~sjplimp/images/pronto_foam.gif",
"http://www.sigmak.ltd.uk/sitepix/images/cast-Iron-valve.jpg.ashx?w=410",
"https://en.wikipedia.or... | |
203rkn | How do you measure the velocity of a galaxy? | We believe the universe is expanding based on the fact that Hubble(along with other scientist through the years?) have measured the velocity of galaxies and have observed that they're moving away from us. How were these measurements taken? | askscience | http://www.reddit.com/r/askscience/comments/203rkn/how_do_you_measure_the_velocity_of_a_galaxy/ | {
"a_id": [
"cfzm31b"
],
"score": [
2
],
"text": [
"Hubble measured the velocities using the Doppler effect for light. Various atoms and molecules emit light at known characteristic wavelengths. If something is move away from us or towards us, we'll see those wavelengths shifted. There's a nice... | [] | [] | [
[
"coolcosmos.ipac.caltech.edu/cosmic_classroom/cosmic_reference/redshift.html"
]
] | |
3zpxma | Was the arab world in Nassers time like a single nation of brothers? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3zpxma/was_the_arab_world_in_nassers_time_like_a_single/ | {
"a_id": [
"cyo3chu"
],
"score": [
11
],
"text": [
"Not at all. There was lip service paid to Pan-Arabism and unity, but Arab states still routinely conspired against one another. Nasser's brief union with Syria was a disaster, the Syrians and Egyptians spent its entirety politically squabbling a... | [] | [] | [
[]
] | ||
cbw5s6 | Why do Italian cities change their names in English, but other countries like Spain and France retain the native name for their city? | Not sure if this is the right subreddit to ask this is but I've always been curious if there's a historical reason for the change. A lot of Italian cities like Fiorenze, Roma, Milano, Napoli etc change their name in English. In Spain I can only think of one: Sevilla. In France I can't think of any. They are all similar... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/cbw5s6/why_do_italian_cities_change_their_names_in/ | {
"a_id": [
"etkzqvb",
"etl0p6s"
],
"score": [
20,
90
],
"text": [
"I can maybe help with a perspective from the other side. In Italy a lot of city names from UK, Germany and France are Italianised: London/Londra, Berlin/Berlino, Paris/Parigi. \nIt was a typical thing until at least the 15... | [] | [] | [
[],
[]
] | |
6lkvtf | how to find out foreign last names? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6lkvtf/eli5_how_to_find_out_foreign_last_names/ | {
"a_id": [
"djuk75c"
],
"score": [
2
],
"text": [
"Just ask. No-one should be expected to know how names work in N+ different cultures.\n\nBesides, if you meet \"Jack Norton\", and refer to him as Mr. Jack, They are most likely amused, before correcting you. Amusement is a good icebreaker, I've ... | [] | [] | [
[]
] | ||
gwwmj | Why does music sound so much faster to me when I first wake up? | I know one of my friends has experienced this as well, although I have heard people have this happen late at night as well. | askscience | http://www.reddit.com/r/askscience/comments/gwwmj/why_does_music_sound_so_much_faster_to_me_when_i/ | {
"a_id": [
"c1qw778"
],
"score": [
12
],
"text": [
"Your mind has a rhythmic expectation that affects how fast or slow it perceives reality. If you play a computer game, try this cool trick to observe a similar effect:\n\nWatch a replay in that game at 2x speed for about 20 minutes and then play... | [] | [] | [
[]
] | |
1e0hmf | To what extent was Nazi Germany's economic development form 1933 onward "unsustainable"? And what effect did it have, if any, on their decision to go to war when they did? | Forgive me, I searched the FAQs and found questions relating to the idea of the German economic miracle in general, but I couldn't find any threads dealing with this specific question. Also, if this is too much of a "what if" type of question, I apologize and can take it to a different subreddit.
I just happened after... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1e0hmf/to_what_extent_was_nazi_germanys_economic/ | {
"a_id": [
"c9vmtza"
],
"score": [
21
],
"text": [
"Read Adam Tooze's *Wages of Destruction: The Making and Breaking of the Nazi Economy*. It's an excellent overview of all things having to do with the German economy before and during the war.\n\nTooze makes the claim that basically every aspect ... | [] | [] | [
[]
] | |
2bv395 | A question about the Macedonian Phalanx | A writer named Stephen English wrote in his book *The Army of Alexander the Great* that the standard view of a "hammer and anvil" approach in regards to the phalanx holding the enemy in place is wrong, and that the Sarissa phalanx were intended to act offensively, rather than defensively, by attacking the enemy in conj... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2bv395/a_question_about_the_macedonian_phalanx/ | {
"a_id": [
"cj96hhs",
"cj9cwch"
],
"score": [
22,
6
],
"text": [
"I think that any characterization of the phalanx as a defensive formation is wrong. It is clearly a formation designed to overpower an enemy line and force them to rout, which, as I'm sure you know, is where the real victor... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Pike_%28weapon%29#Medieval_revival",
"http://www.jstor.org/discover/10.2307/1192506?uid=3739400&uid=2129&uid=2&uid=70&uid=3737720&uid=4&sid=21104010132991"
]
] | |
5e8hm4 | Was the 94% marginal tax rate under FDR effective in its goal? Or did the wealthy simply wriggle through the loopholes? | You hear about the prosperity under high taxes, but were these taxes actually bringing in more money % gdp relative to today? Sorry, I am a high school student who dosen't have a complete grasp. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5e8hm4/was_the_94_marginal_tax_rate_under_fdr_effective/ | {
"a_id": [
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"score": [
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"text": [
"Given the economic boom across the 1950s, I'd like to ask the same question about Eisenhower (91% top rate) ",
"You can see a graph of federal tax revenues as a share of GDP... | [] | [] | [
[],
[
"https://fred.stlouisfed.org/series/FYFRGDA188S"
],
[
"http://www.taxhistory.org/thp/readings.nsf/ArtWeb/AEEC9CAC8F773DD7852579C20073FD36?OpenDocument",
"https://m.reddit.com/r/AskHistorians/comments/3sure6/people_keep_saying_that_the_income_tax_rate_under/?ref=search_posts"
],
[
"ht... | |
7q0t49 | Has any person or group been successful in making (large scale) alterations to a language? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7q0t49/has_any_person_or_group_been_successful_in_making/ | {
"a_id": [
"dsli9c1"
],
"score": [
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"text": [
"Sorry, we don't allow [\"example seeking\" questions](_URL_0_). It's not that your question was bad; it's that these kinds of questions tend to produce threads that are collections of disjointed, partial, inadequate responses. If you have a quest... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/wiki/rules#wiki_no_.22example_seeking.22_questions",
"https://www.reddit.com/r/AskHistorians/comments/3nub87/rules_change_throughout_history_rule_is_replaced/"
]
] | ||
2r69mf | Is it possible that there are distant stars moving away from Earth so fast that light from them would never reach the Earth? | I suppose there are two parts to the question. The first is whether an object can have a relative velocity greater than the speed of light (taking into account the expansion of the universe). The second follows from the first and I'd particularly like to know the application of special relativity to that scenario. | askscience | http://www.reddit.com/r/askscience/comments/2r69mf/is_it_possible_that_there_are_distant_stars/ | {
"a_id": [
"cnd0vqf",
"cneoh69"
],
"score": [
26,
2
],
"text": [
"Hi /u/nemodatass,\n\n > The first is whether an object can have a relative velocity greater than the speed of light (taking into account the expansion of the universe).\n\nIf we consider the instantaneous rate of change in ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Minkowski_space",
"http://en.wikipedia.org/wiki/Friedmann%E2%80%93Lema%C3%AEtre%E2%80%93Robertson%E2%80%93Walker_metric",
"http://en.wikipedia.org/wiki/Metric_signature",
"http://en.wikipedia.org/wiki/Comoving_distance",
"http://en.wikipedia.org/wiki/Recessional_v... | |
4n12fc | why does a bicycle get more stable when you move ? | I think most of us who have ridden a bicycle can say that they cannot keep the bicycle upright without their feet touching the ground while it's stationary, but once you start accelerating, you feel the bicycle becomes much more stable. *So can someone explain why there is a directly proportional relation between spee... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4n12fc/eli5_why_does_a_bicycle_get_more_stable_when_you/ | {
"a_id": [
"d3zwtvn",
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"score": [
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"text": [
"It's sort of a combination of momentum and centripetal force. The faster the wheels turn, the more force is exerted towards the outside of the tire, making it \"want\" to continue its path. Also the momentum of the actual bi... | [] | [] | [
[],
[
"https://www.youtube.com/watch?v=nhMECbDRVLI"
]
] | |
affnw6 | why does the human brain like patterns so much? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/affnw6/eli5_why_does_the_human_brain_like_patterns_so/ | {
"a_id": [
"edy8y80",
"edynqd1"
],
"score": [
9,
3
],
"text": [
"When real patterns are detected, like cause & effect, they frequently offer the ability to predict likely or logical outcomes of actions or events, and that offers survival value. ",
"Because whole nature functions in ... | [] | [] | [
[],
[]
] | ||
10bpfa | what is to sing in tune. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/10bpfa/eli5_what_is_to_sing_in_tune/ | {
"a_id": [
"c6c256v",
"c6c2572",
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"score": [
2,
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],
"text": [
"You mean...what it is to sing in tune? As in, what it feels like/means to sing a song with the right pitch?",
"In a song, each sound is supposed to be at a certain pitch. If th... | [] | [] | [
[],
[],
[],
[]
] | ||
26biz1 | Did the Romans only use people who'd been slaves their entire lives as house servants? If "no" how did they keep freshly captured barbarians with nothing to loose from killing their masters? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/26biz1/did_the_romans_only_use_people_whod_been_slaves/ | {
"a_id": [
"chqf4qm"
],
"score": [
3
],
"text": [
"If i remember correctly they took very few adult male slaves for just that reason. Women and children were mainly the ones that were captured and sold. The male slaves would then have lived their whole life or most of it in slavery. The Romans wo... | [] | [] | [
[]
] | ||
4pnsc1 | will we ever have designer babies? are there laws now that prevent this? | I don't want to leave my offspring's genes up for chance and I would love to know what the status is and if there are laws preventing genetic modification. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4pnsc1/eli5_will_we_ever_have_designer_babies_are_there/ | {
"a_id": [
"d4mf3eg",
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"score": [
5,
2
],
"text": [
"The issue at hand isn't legal (yet anyway)... but rather technological and cost based.\n\nWe're getting close to a Gattica scenario... but we're not there yet.",
"There are in the UK, and in many other countries. The [Hu... | [] | [] | [
[],
[
"http://www.hfea.gov.uk/"
]
] | |
b9ddt6 | Is it possible to predict the next major mountain range? | Since we as humans are aware of the shifting and colliding of the tectonic plates to create mountains, are we also capable of predicting when and where the next fresh mountain range will appear? Also, about how long does it take for (just as an easy example) totally flat ground to become a mountain range like the Rocki... | askscience | https://www.reddit.com/r/askscience/comments/b9ddt6/is_it_possible_to_predict_the_next_major_mountain/ | {
"a_id": [
"ek9awnf"
],
"score": [
2
],
"text": [
"Yes and no. You are correct that we con forward model the movement of plates to a certain extent (such predictions exist) so we can anticipate the location of collisional plate boundaries that favor the formation of mountain ranges. But the form... | [] | [] | [
[]
] | |
5p69qg | can a bullet be reused at all? if not, why not? thanks | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5p69qg/eli5_can_a_bullet_be_reused_at_all_if_not_why_not/ | {
"a_id": [
"dcopd42",
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"dcopkzd",
"dcopttx",
"dcopu71"
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"score": [
3,
3,
2,
12,
3
],
"text": [
"Yeah but not immediately. Especially if it hits something, when they hit something they usually get deformed. But bullets can be like melted down so it can b... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
go7j1 | Does your blood type affect your health in any way (except in the case of transfusions and transplants) | For instance, gives you a resistance to certain diseases? Certain drugs are more or less effective? Anything else? (I know those with sickle cell anemia are more resistant to malaria, but it's not a blood type and it's a disease in itself) | askscience | http://www.reddit.com/r/askscience/comments/go7j1/does_your_blood_type_affect_your_health_in_any/ | {
"a_id": [
"c1p0q7l",
"c1p10cl"
],
"score": [
6,
44
],
"text": [
"There may be some relationship between A-antigens and influenza, B-antigens and gram-negative bacteria. [Wiki: ABO blood group system](_URL_0_)",
"Yes, there have been many diseases linked to differing outcomes based on... | [] | [] | [
[
"http://en.wikipedia.org/wiki/ABO_blood_group_system#Origin_theories"
],
[
"http://jid.oxfordjournals.org/content/185/9/1335.short",
"http://jnci.oxfordjournals.org/content/102/7/502.short",
"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1273892/",
"http://www.jstor.org/pss/30137589",
"h... | |
f6xve0 | Why are cases of dementia more common in North America and Europe compared to the rest of the world? | askscience | https://www.reddit.com/r/askscience/comments/f6xve0/why_are_cases_of_dementia_more_common_in_north/ | {
"a_id": [
"fi95da4",
"fi99xrt"
],
"score": [
22,
15
],
"text": [
"People live longer in developed countries compared to developing countries. They are also more likely to see a doctor on a regular basis which would allow them to diagnose such a thing. So the actual incidence may not be t... | [] | [] | [
[],
[]
] | ||
4tie4h | how does vacuum insulation (like in a thermos) work? why is it so good at keeping things hot or cold? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4tie4h/eli5_how_does_vacuum_insulation_like_in_a_thermos/ | {
"a_id": [
"d5hkku5",
"d5hkn8d",
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],
"score": [
9,
2,
2
],
"text": [
"Heat travels in three ways, convection, conduction, and radiation. \nConvection is from an air or fluid flowing over the object. Example: the steam coming off tea, or when you open a hot oven and feel a... | [] | [] | [
[],
[],
[]
] | ||
1pkgxd | why is debating another person so appealing? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1pkgxd/eli5_why_is_debating_another_person_so_appealing/ | {
"a_id": [
"cd37vg0",
"cd3btkz"
],
"score": [
2,
3
],
"text": [
"Who said it was appealing?",
"Debating forces you to examine your own thoughts more closely. It challenges your mind. It's like sports, only better because it's your brain, not your muscle that wins or loses."
]
} | [] | [] | [
[],
[]
] | ||
3mby68 | how do telescopes work? | I know they use mirrors but how can a telescope clearly see in space? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3mby68/eli5_how_do_telescopes_work/ | {
"a_id": [
"cvdpbus",
"cvdpj42",
"cvdsqot",
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3,
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14,
2,
2
],
"text": [
"You stack a whole bunch of hobby lobby microscopes and shove them in a paper towel tube. Wait til it's night time, point it at the sky and enjoy.\n\nMore inf... | [] | [] | [
[],
[],
[],
[],
[]
] | |
252jst | Why are some mushrooms and fungi flammable? | A lot of mushrooms are used as tinder by outdoorsmen, such as [amadou](_URL_0_) which comes from [horse hoof fungus](_URL_1_).
Why are mushrooms more flammable than other plants? | askscience | http://www.reddit.com/r/askscience/comments/252jst/why_are_some_mushrooms_and_fungi_flammable/ | {
"a_id": [
"chd7d8r"
],
"score": [
7
],
"text": [
"Because they contain a large amount of combustible material and not much water.\n\nThe reason most plant material (I know fungi aren't actually plants) does not burn easily is because it contains a large amount of water. For any substance to burn... | [] | [
"http://en.wikipedia.org/wiki/Amadou",
"http://en.wikipedia.org/wiki/Fomes_fomentarius"
] | [
[]
] | |
jo4d6 | what is model/view/controller? | I'm learning python and using the web framework Django. I've set up simple sites but I still don't totally understand the MVC...thing. I've read wikipedia but I guess I don't really get it. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/jo4d6/eli5_what_is_modelviewcontroller/ | {
"a_id": [
"c2dqqig",
"c2dqqig"
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"score": [
2,
2
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"text": [
"Model holds the data, view shows it to the user, controller takes input and tells the model how to update the data.\n\nIf reddit is an MVC design (dunno if it is), then the database of links and comments is the model, HTML a... | [] | [] | [
[],
[]
] | |
5vr6br | what's the difference between chicken nuggets and boneless chicken wings? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5vr6br/eli5_whats_the_difference_between_chicken_nuggets/ | {
"a_id": [
"de450ca"
],
"score": [
2
],
"text": [
"Chicken nuggets are chicken meat that has been ground up and turned into little dinosaur-shaped reconstituted chicken food products coated in breading.\n\nBoneless chicken wings are pieces of chicken breast coated in breading."
]
} | [] | [] | [
[]
] | ||
aqacrt | Is a study with a small sample size less meaningful than one with a big sample size? | To my understanding, the p value of a study determines how likely a result this extreme or more extreme would happen if there were no effect (e.g. due to coincidence, measuring inaccuracies etc.).
Thus, if you have two studys, one with a small sample size (let's say 10 persons) and one with a big sample size (let's sa... | askscience | https://www.reddit.com/r/askscience/comments/aqacrt/is_a_study_with_a_small_sample_size_less/ | {
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"egf29zw",
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"score": [
9,
6,
3,
2
],
"text": [
"Your definition of a P value is better than most scientists could give!\n\nHowever, your next statement is not exactly correct, at least in my opinion (though very understandable).... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Central_limit_theorem"
],
[],
[
"https://en.wikipedia.org/wiki/False_discovery_rate",
"https://swiss3rnetwork.org/wp-content/uploads/2013/12/powerfailurenrn3475.pdf"
]
] | |
47aoro | Why is is the i root of i^i not i ? | askscience | https://www.reddit.com/r/askscience/comments/47aoro/why_is_is_the_i_root_of_ii_not_i/ | {
"a_id": [
"d0bo5w7"
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"score": [
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"text": [
"The ith root of i^i is i. It is not the only root because the root function is multivalued over the complex numbers. If you are taking natural number roots, specifically the nth root you would have exactly n solutions. For general complex number... | [] | [] | [
[]
] | ||
1n68af | why is flexibility attractive in women? | In response to [this](_URL_0_) post, where the top comment regards it as attractive.
Lots of guys seem to find flexibility incredibly arousing, but it I don't find any appeal in it. Some sources claim that it has to do with being able to use more positions in bed, but that seems like too minor a detail to make a diffe... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1n68af/eli5_why_is_flexibility_attractive_in_women/ | {
"a_id": [
"ccfqek3",
"ccfqhvj"
],
"score": [
7,
6
],
"text": [
"nope its all about the sex, for me its just the idea of what it means is on the table for us to be able to do. I may be able to try new positions with a more flexible partner. Is it a huge deal? no, but its enough to get a f... | [] | [
"http://www.reddit.com/r/gifs/comments/1n4ywn/her_legs_just_keep_spreading_it_hurts_to_watch/"
] | [
[],
[]
] | |
1jq3d3 | night vision and shadows? | Why does night vision on cameras and stuff show shadows behind what they're filming? Hope this makes sense! | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1jq3d3/eli5_night_vision_and_shadows/ | {
"a_id": [
"cbh6co9",
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"score": [
3,
2,
3
],
"text": [
"Night vision amplifies available light. A faint source of light that you can't see still casts a shadow, you just can't make out the difference. Night vision can.",
"The nightvision cameras use a ... | [] | [] | [
[],
[
"http://www.wired.com/images_blogs/underwire/2013/01/mf_ddp_large.jpg"
],
[]
] | |
2gv5gs | why is there no *grass roots* movement against saudi arabia like there was outrage over apartheid? | It seems that their treatment of women is worse than apartheid, not to mention the execution of "sorcerers."
My first thought is "because oil" but the anti-apartheid movement began with students. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2gv5gs/eli5_why_is_there_no_grass_roots_movement_against/ | {
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"ckmxe8h",
"ckmxvus",
"ckn0i67",
"ckn4iix",
"ckn6vvn",
"ckn8l57",
"ckn8u8f",
"ckn9c23",
"ckn9klp",
"ckn9voe",
"ckna3qf",
"ckna4df",
"c... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Petrodollar"
],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
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[]
] | |
435vbj | "the greek political crisis in the middle of the fourth century B.C" | So for this presentation I had to read about the origins of the concept of the constitution. The text says a political crisis (see title) lead athenian philosophers (Plato and Aristotle) to question if their current democracy (that was about 100 years old at the time) was a cause of this crisis or it was something else... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/435vbj/the_greek_political_crisis_in_the_middle_of_the/ | {
"a_id": [
"czfsi30"
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"score": [
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],
"text": [
"It seems like the original text hugely oversimplified the issue. It also relied on the outdated notion of a \"fourth-century crisis\". I will try to clear a few things up.\n\nAthens is considered to have become a democracy through the reforms of ... | [] | [] | [
[]
] | |
1gypxc | Prior to the Russia's conquest of the far east, what people/tribes/nations lived/occupied those lands? Did anyone lived in Chukotka for example? What were those people's traditions? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1gypxc/prior_to_the_russias_conquest_of_the_far_east/ | {
"a_id": [
"cap9acx"
],
"score": [
6
],
"text": [
"Numerous people lived in Siberia and the far east of Russia, far too numerous to list them all here. These people tend to be trappers, herders, hunters, and the like.\n\nGenealogically, there is a strong relationship to the people who live(d) her... | [] | [] | [
[
"http://www.amazon.com/Arctic-Mirrors-Russia-Small-Peoples/dp/0801481783"
]
] | ||
2n11or | how am i supposed to use public bathroom seat protectors? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2n11or/eli5_how_am_i_supposed_to_use_public_bathroom/ | {
"a_id": [
"cm9cvlw",
"cm9d30x",
"cm9dkw4"
],
"score": [
2,
2,
2
],
"text": [
"You tear out that little center bit, it is probably already open at one end.\n\nThe reality is you don't need to use one at all from a disease stand point. If the seat is generally dirty then sure, go ... | [] | [] | [
[],
[],
[]
] | ||
2ukww3 | how did the banana peel become synonymous with slipping and falling? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ukww3/eli5how_did_the_banana_peel_become_synonymous/ | {
"a_id": [
"co9ammx",
"co9bh2g",
"co9lk50"
],
"score": [
13,
10,
3
],
"text": [
"Bananas were common street food in the US during the early 1900s, people would throw the peels on the ground, not in the trash and people walking would slip on them. Hilarity ensuesd\n\nNote: It wasn'... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Gros_Michel_banana",
"http://en.wikipedia.org/wiki/Cavendish_bananas"
],
[],
[]
] | ||
dqq13o | pass, passed, and past, grammar explanation needed | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dqq13o/eli5_pass_passed_and_past_grammar_explanation/ | {
"a_id": [
"f68ci7r",
"f68edyp"
],
"score": [
5,
4
],
"text": [
"\"Pass\" is a verb with lots of definitions. (it can also be a noun, but that isn't important to the context you're asking about here) \n\"Passed\" is just the past tense of \"pass.\" \n\"Past\" can be a noun (\"apartheid ... | [] | [] | [
[],
[]
] | ||
kkq9s | How is my brain able to make the most beautiful scenery, full of details, in my dreams and when I try to do the same while being awake I have the hardest time. | askscience | http://www.reddit.com/r/askscience/comments/kkq9s/how_is_my_brain_able_to_make_the_most_beautiful/ | {
"a_id": [
"c2l1lei",
"c2l1lei"
],
"score": [
7,
7
],
"text": [
"Parts of your brain, which remain active while you sleep, interpret the \"mess\" the rest of your sleeping brain makes. That part of your brain is already in use by perceiving the real world around you while you are awake. \... | [] | [] | [
[],
[]
] | ||
2348al | what are the purple colour-schemed textures for in 3d video games? | Like [these](_URL_0_)? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2348al/eli5_what_are_the_purple_colourschemed_textures/ | {
"a_id": [
"cgt92o2"
],
"score": [
3
],
"text": [
"Although I can't say I'm completely sure, this appears to be a relief map. When you are making 3D computer models, it costs way too much computing power to get the shape of an object right to the millimeter, because this involves putting a lot of... | [] | [
"http://puu.sh/8a0nH.jpg"
] | [
[
"http://apocalypsecity.net/img/texture.jpg"
]
] | |
15bgpn | Sun Protection Factor - SPF - is higher than 30 really required for "white adult Caucasians" - sorting out marketing from science | It's obvious that marketing plays a huge role in sunscreen lotions. I see people half jokingly say "to get SPF 500" - and the marketing reflects this simplistic numerical logic (higher is better). It reminds me of the "higher Mghz" is better between Intel and AMD CPU frequency on computers.
Assuming the products are... | askscience | http://www.reddit.com/r/askscience/comments/15bgpn/sun_protection_factor_spf_is_higher_than_30/ | {
"a_id": [
"c7levha"
],
"score": [
2
],
"text": [
"Sun protection factor is essentially a multiplier for your bodies natural resistance to burning.\n\nIf you take 20 minutes before you turn red in the sun and I take 10 and we both properly apply SPF 15 you would be resistant to burning for 300 mi... | [] | [] | [
[]
] | |
1z5wmg | is there a scientific, historical, or sociological explanation as to why women like getting flowers? | Is it "just because?" | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1z5wmg/eli5_is_there_a_scientific_historical_or/ | {
"a_id": [
"cfqtbfe"
],
"score": [
5
],
"text": [
"It isn't as simple as \"women like getting flowers\". Flowers have been used as symbols or given meaning for thousands of years; the Hebrew Bible contains references to henna blossoms as a symbol of affection. The giving of flowers is a method of... | [] | [] | [
[]
] | |
f6h3up | Why did Hitler wait until the day before he killed himself to get married? | Pretty much the title. Him and Eva Braun knew each other for pretty much 16 years but didn't get married until they knew they would kill themselves the next day (and Hitler was 56 at the time). Geobells, Göring, Himmler, Heidrich, Hess, Bormann, etc. were all high ranking Nazis who got married. Why was Hitler so differ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/f6h3up/why_did_hitler_wait_until_the_day_before_he/ | {
"a_id": [
"fi7d5ng"
],
"score": [
5
],
"text": [
"According to Otto Wagener (SA Chief of Staff from October 1929 through December 1930), Hitler declared to his party comrades that he was living in politics and rejecting his private life, and had never planned to marry at all. In a personal conve... | [] | [] | [
[]
] |
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