q_id stringlengths 5 6 | title stringlengths 3 296 | selftext stringlengths 0 34k | document stringclasses 1
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1jgfoe | space elevators | How does the concept of a space elevator work?
How would we build one, and how much would it cost?
What would it be made out of?
How can something be simultaneously be tethered to the earth and orbiting at the same time?
What would be the scientific use of such a device?
How close are we to being able to make o... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1jgfoe/eli5_space_elevators/ | {
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"Place an asteroid or a space station in geosynchronous orbit, preferably over the equator. At the same time and at the same rate, extend two cables from the asteroid: a cable down toward the Earth, and a cable up away from the Earth. Assuming t... | [] | [] | [
[]
] | |
7nvor7 | sodium fluoride replenishing phosphorus and calcium in teeth. | How does Sodium Fluoride replenish phosphorus and calcium in teeth if the compound has neither of these chemicals? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7nvor7/eli5_sodium_fluoride_replenishing_phosphorus_and/ | {
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"It doesn't. The fluoride replaces the calcium, replacing hydroxyapatite (the hard calcium- containing mineral that makes up most of your enamel) with fluorapatite. This is actually a good thing - fluorapatite is much harder than hydroxyapatite, a... | [] | [] | [
[]
] | |
4io1e6 | how do big cooperation like microsoft and apple, protects the source codes of their operating systems from leaking | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4io1e6/eli5_how_do_big_cooperation_like_microsoft_and/ | {
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"Most software that you use on your PC or mobile device is *compiled*, meaning that it's been converted from the original source code (full of comments, explanations, and human-readable variable names) ... | [] | [] | [
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"https://voat.co",
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1mbmus | when is it okay/not okay to sample a song? | This can include things like mashups, bootlegs, remixes, etc | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1mbmus/eli5_when_is_it_okaynot_okay_to_sample_a_song/ | {
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"If you don't want to read a summary here's an article from wikipedia:_URL_0_\n\nWhen using a sample in a new song you are really just taking a little part of a preexisting song and reusing it. This is fine, as long as you h... | [] | [] | [
[
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205edq | how does the fashion industry work? how does haute couture, which mostly looks hideous to my eyes, become fashion of the next generation? (or does it?) | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/205edq/eli5_how_does_the_fashion_industry_work_how_does/ | {
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"It generally doesn't, much of what you see in those sorts of fashion shows are just too weird and/or expensive to really see any sort of wide adoption in general fashion. But a lot of times those ridiculous looking designs are just extreme demons... | [] | [] | [
[]
] | ||
1kidoz | soap kills 99.9% of germs, why doesn't it work when ingested to kill the germs inside you? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1kidoz/eli5_soap_kills_999_of_germs_why_doesnt_it_work/ | {
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"text": [
"Soap doesn't kill germs at all. Soap is what's called a *surfactant,* which is a chemical that makes it easier for things to dissolve in water. When you wash your hands with soap, it's actually the action of rubbing your ha... | [] | [] | [
[],
[]
] | ||
do43vg | why is it that when you put pressure on your eyes (like if you were laying down in a certain way that put pressure on your eyes) then you take the pressure off and look around everything is blurry? | I notice it especially when im in bed with the lights off then go to grab a water or something then my alarm clock looks burry af or if i look at my phone i can barely see my screen | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/do43vg/why_is_it_that_when_you_put_pressure_on_your_eyes/ | {
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"text": [
"Your eyelids have a bunch of glands on them that secrete oil. If you press them (or your pillow for that matter) you're squeezing it out like a tube of toothpaste. So while it spreads over your eye and drains, your looking through an oily surface... | [] | [] | [
[]
] | |
2ei5du | why do we pace when anxious/stressed? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ei5du/eli5_why_do_we_pace_when_anxiousstressed/ | {
"a_id": [
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"text": [
"Anxiety makes us want to take action (to fix whatever's winding us up). If we have no action to take, we just walk around to work off the extra action energy."
]
} | [] | [] | [
[]
] | ||
edyg0h | if a fall from a great height into water is like landing on concrete regardless of how you position yourself, why are divers unharmed when diving from 100+ feet? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/edyg0h/eli5_if_a_fall_from_a_great_height_into_water_is/ | {
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"For it to be like concrete no matter how you position you have to go up to a few hundred feet. If you belly flop at 100ft you will probably kill or at least seriously injure yourself. Professional high ... | [] | [] | [
[],
[],
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"https://en.wikipedia.org/wiki/Surface_tension"
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2ub296 | how do millions of votes get manually counted in less than a day in the australian election when every single vote needs to be shipped to the capital? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ub296/eli5_how_do_millions_of_votes_get_manually/ | {
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" > The counting of votes is known as the scrutiny. The scrutiny commences on election night in each polling place after 6pm when the polling place has closed. Both ordinary ballot papers and pre-poll ballot papers completed by voters within the... | [] | [] | [
[
"http://www.aec.gov.au/voting/counting/"
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411c71 | why do long camera lenses have so many individual lenses inside them? how does that work? | This one was kind of hard to ask since the word lens is used for both the overall assembly and the individual optical elements inside it. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/411c71/eli5_why_do_long_camera_lenses_have_so_many/ | {
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"Photographers call the individual pieces of glass elements. \n\nThey're there because each curved surface allows the designers one more degree of freedom to correct optical flaws (go look through a cheap magnifying glass to... | [] | [] | [
[],
[
"http://www.physicsclassroom.com/Class/refrn/u14l5c1.gif"
]
] | |
fcpj39 | why do our ears always hear our name distinctively even in a noisy place? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fcpj39/eli5_why_do_our_ears_always_hear_our_name/ | {
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2s8bdj | will someone please explain a "union" to me? | I used to work at wal-mart & they told us unions were bad blah blah blah, what are they and how are they bad? (I'm assuming they're not bad considering walmart said so & walmart is evil). Ive googled this question but can't find a satisfying answer. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2s8bdj/eli5will_someone_please_explain_a_union_to_me/ | {
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"text": [
"When a group of workers, usually inside the same company or field of work, collectively form an organization to represent them in labour disputes and to provide them with protecti... | [] | [] | [
[],
[],
[],
[]
] | |
sycrr | balance sheet vs. income statement vs. cash statement | What are the differences between the three? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/sycrr/eli5_balance_sheet_vs_income_statement_vs_cash/ | {
"a_id": [
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"text": [
"Income Statement: has all the revenue (sales) and expenses (cost of operating the business) and ends at net income\n\nBalance Sheet: snapshot of your company's assets, liabilities, and owner's equity. \n\nCash Flow Statement: starts with your net... | [] | [] | [
[]
] | |
7iyhnl | how do we make different notes when we whistle? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7iyhnl/eli5_how_do_we_make_different_notes_when_we/ | {
"a_id": [
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"score": [
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"text": [
"By changing the shape of the hole between your lips, you make the air passing through it move past your lips at different pressure and speeds, which changes the way it vibrates, which is what sound is. "
]
} | [] | [] | [
[]
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2aahiq | if i point a laser beam at the moon and slightly moved it how fast would it be on the surface of the moon | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2aahiq/eli5if_i_point_a_laser_beam_at_the_moon_and/ | {
"a_id": [
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"text": [
"As fast as you like! The speed of the laser spot (which will be several kilometers wide by the time it reaches the moon) will be equal to the product of the distance from your hand to the moon (about 384,000 km) and the angu... | [] | [] | [
[],
[
"https://m.youtube.com/watch?v=lR4tJr7sMPM"
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3f7p3i | why isn't smoking during pregnancy illegal even though the side effect are well known, and is generally frowned upon in society? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3f7p3i/eli5_why_isnt_smoking_during_pregnancy_illegal/ | {
"a_id": [
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"text": [
"Because a society can't just make laws for every single behavior it deems unhealthy or negative. ",
"See [this ELI5 from a few hours ago](_URL_0_)."
]
} | [] | [] | [
[],
[
"https://www.reddit.com/r/explainlikeimfive/comments/3f6y40/eli5_why_is_it_legalokay_for_a_clearly_pregnant/"
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7v1cvk | do we know why elementary particles behave like waves / what underlying phenomenon causes it to behave like a wave? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7v1cvk/eli5_do_we_know_why_elementary_particles_behave/ | {
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"text": [
"TLDR: No, we don‘t know per se *why* that happens, rather we observed it and adjusted our theories to it. \n\nFor the longer answer, I think we have to differentiate between the philosophial aspects an... | [] | [] | [
[],
[],
[]
] | ||
ezrv5j | why do older cars have a kind of line pattern on the headlights and it is a little blurry while newer cars have nice and transparent headlights? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ezrv5j/eli5_why_do_older_cars_have_a_kind_of_line/ | {
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"score": [
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2
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"text": [
"Normal driving light (not high beam and not parking lights) has to be asymmetrical, meaning the beam of light needs to light up the road differently. Towards the middle/traffic, the light has to hit the road sooner than tow... | [] | [] | [
[],
[
"https://i.imgur.com/VLWuNzn.png",
"https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcShjX12oAzh-YvAWHE4vD6cvn7-OufXNR-CPhONEpUrynvYe8Dz&s",
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"https://i.imgur.com/Xu5UL5T.png",
"https://i.imgur.com/76ujd9m.png",
"https://i.imgur.com/RVlaopd.p... | ||
1v46j3 | why do all invasive species seem to come from asia, and why don't we hear about north american species of fish/insects/bacteria/whatever causing destruction over there? | It seems like every story I read about a horrible, invasive species seems to involve some species that came from Asia and took hold in America: Carp, Burmese Python, and now [this orange juice disease](_URL_0_). Why do so many of the invasive species that hurt US ecosystems come from Asia, and how come we never hear a... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1v46j3/eli5why_do_all_invasive_species_seem_to_come_from/ | {
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"text": [
"For one thing, the media you're exposed to primarily focuses on what's going on here, because that's what you care about. They don't typically report on incidents that happen internationally unless it s... | [] | [
"http://www.washingtonpost.com/national/health-science/florida-citrus-growers-worry-that-deadly-bacteria-will-mean-end-of-orange-juice/2014/01/12/1391c470-7891-11e3-b1c5-739e63e9c9a7_story.html"
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3co98x | why do human beings from only about 100 years ago look so different than human beings today? | I'm not just talking height/weight/build, their faces appear different too. If I'm wrong here let me know, but in looking at very old photos it appears as if people's facial features used to look noticeably different than they do today. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3co98x/eli5_why_do_human_beings_from_only_about_100/ | {
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"The quality of life from 1915 compared to now is amazingly differen... | [] | [] | [
[],
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g39oir | how come us humans have to eat all these different food groups to get proper nutrients, like the food pyramid or other models, but herbivores like horses or cattle can just eat grass from the same fields their whole life and be fine? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/g39oir/eli5_how_come_us_humans_have_to_eat_all_these/ | {
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"Other animals have evolved to get most, if not all, of what they need to survive from a single reliable food source - plant matter, for example.\n\nOne of humankind's biggest strengths is that we can s... | [] | [] | [
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717t4n | how do noise cancelling shooters ears work? | I just bought a new pair of ears (long overdue) and I'm curious as to how they have a volume adjustment to hear outside the headphones at normal talking volume, but they can then cancel out louder gunshots. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/717t4n/eli5_how_do_noise_cancelling_shooters_ears_work/ | {
"a_id": [
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"They work like regular ears to cancel out all sound. Then when you switch them on a microphone on the outside picks up ambient noise, processes it, and feeds it into the speakers in the ear cups. As long as that noise stays within a certain prese... | [] | [] | [
[]
] | |
5qyhi5 | why aren't we incredibly thirsty after a long night's sleep? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5qyhi5/eli5_why_arent_we_incredibly_thirsty_after_a_long/ | {
"a_id": [
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"text": [
"Your metabolism slows at night, and hopefully you aren't losing any fluids while asleep, although you do dehydrate some. I made a point to drink 18 oz or so of water first thing every morning, and it makes a noticeable difference."
]
} | [] | [] | [
[]
] | ||
53mf29 | what can i do to *genuinely* make a difference in climate change and help secure a sustainable future for planet earth? and can i somehow make a comfortable living from it? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/53mf29/eli5what_can_i_do_to_genuinely_make_a_difference/ | {
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"There's not really anything you can personally do to make a big difference. But a lot of individuals doing a small amount for the environment can equate to something big.\n\nAnything you could do to mak... | [] | [] | [
[],
[],
[
"http://www.cowspiracy.com/facts/"
]
] | ||
8viwsr | why do us cities expand outward and not upward? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8viwsr/eli5_why_do_us_cities_expand_outward_and_not/ | {
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b1l3i9 | why would a helicopter have no problem carrying thousands of pounds at a low altitude, but cannot carry the same weight at a significantly higher altitude? | Watching Triple Frontier and this is a significant plot point. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/b1l3i9/eli5_why_would_a_helicopter_have_no_problem/ | {
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"Air is significantly thinner at high altitude. So a helicopter cannot produce enough lift without anything to resist it.",
"There is less air for the blades to push on. Same reason airplanes can'... | [] | [] | [
[],
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nih8i | the difference between science and art degrees in the same field, and the difference between science and applied science. | For example, most college have both a BS Psychology and a BA Psychology program, with different course requirements. What is the difference?
Similarly, what is the difference in a ASBA (Assoc Science Business Admin) and an AASBA (Assoc Applied ") | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/nih8i/the_difference_between_science_and_art_degrees_in/ | {
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"I can only speak to my expiriance as a BA in Biology major.\n\nBut at my school getting a BS vs a BA in a 'science' field meant taking more difficult classes in your major and allowed less 'elective' courses outside. The spe... | [] | [] | [
[],
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] | |
6cfm4f | biting your mouth | So you know how you're eating some good food and then ya bite the inside of your mouth and it really hurts? Then you do it again a few hours/days later in exactly in the same spot. why is that? Help. I feel like I've ravaged the inside of my cheek at this point | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6cfm4f/eli5_biting_your_mouth/ | {
"a_id": [
"dhubcwu"
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"score": [
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"text": [
"When you first bite your cheek it gets inflamed. It swells a bit and so grows bigger. This makes it easier for you to bite it a second and third chance."
]
} | [] | [] | [
[]
] | |
d3ysx6 | why are knee extensions bad for your ligaments? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/d3ysx6/eli5_why_are_knee_extensions_bad_for_your/ | {
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"text": [
"Leg extensions put a lot of pressure on your knees, especially if you have a lot of weight placed on them. They also put tension on your ACL and overall isn’t the best exercise to use when training your quads because the risk of injury is too hig... | [] | [] | [
[]
] | ||
1xfth6 | what is the knot in my stomach when i'm nervous/scared? why is it there? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1xfth6/what_is_the_knot_in_my_stomach_when_im/ | {
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"text": [
"Here in the UK it's called [\"Collywobbles\".](_URL_0_) If that's not the most adorable name for acute nervousness, I don't know what is. ",
"During an e... | [] | [] | [
[
"http://www.oxforddictionaries.com/definition/english/collywobbles"
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[],
[],
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"https://www.youtube.com/watch?v=hew3z2FIbME"
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[]
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50y63u | where did the idea of zombies came from? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/50y63u/eli5_where_did_the_idea_of_zombies_came_from/ | {
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"text": [
"The modern idea of a zombie can be considered to be a mix of inspirations from various authors and myths. However, for the most succinct and early example of what we call zombies, you probably want Hait... | [] | [] | [
[],
[],
[]
] | ||
9yogd1 | what are magnets made of? | I mean, what is the base material to produce a magnet? How are they manufactured?
Now that I think about it, there must be lots of constraints producing strong magnets.
Thanks for the replies! | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9yogd1/eli5_what_are_magnets_made_of/ | {
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"Magnetism is created by the movement of electricity, typically electrons. Electrons spin, and orbit the nucleus of an atom (so they move), and they ARE electricity, so each electron is a tiny magnet.\n\nMost atoms have enough electrons spinning ... | [] | [] | [
[
"https://www.nationalgeographic.org/encyclopedia/magnetism/"
]
] | |
2ni6fq | why does a wet trampoline feel like it makes you jump higher? does it actually do that? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ni6fq/eli5_why_does_a_wet_trampoline_feel_like_it_makes/ | {
"a_id": [
"cmdsxww",
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"score": [
3,
3,
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"text": [
"I recon it doesn't...the only think I can think of is if it is cold water, the trampoline fabric/springs might get tighter as the materials contract.",
"that sounds like a euphemism from a galaxy fa... | [] | [] | [
[],
[],
[]
] | ||
evy0n3 | how does all the digging of tunnels and construction of tall heavy buildings not lead to land cracking and breaking apart? | Always wondered that especially for dense cities like Singapore, Tokyo and New York, how do engineers continue to dig deeper and build higher without risking the land cracking apart like the ice age squirrel's nut cracking the glacier, and having all the infrastructure just sink into the ocean? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/evy0n3/eli5_how_does_all_the_digging_of_tunnels_and/ | {
"a_id": [
"ffyp8z3",
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"score": [
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"text": [
"The ground is really strong. Also, there are engineers who basically only deal with figuring out if the ground can support the loads of buildings and other structures.\n\n_URL_0_",
"Tunnels and foundations aren't dug hap... | [] | [] | [
[
"https://en.m.wikipedia.org/wiki/Geotechnical_engineering"
],
[]
] | |
28mjp4 | what are aleph 2, 3, .... n ? why is there an aleph number greater than aleph-1? | I read this reddit explanation of aleph-0 and aleph-1 (_URL_0_) and understand those concepts. However, why are there aleph-2, 3, ... and so on? Can someone explain what these extra aleph numbers mean, and why there is an aleph number greater than aleph-1? Thanks | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/28mjp4/eli5_what_are_aleph_2_3_n_why_is_there_an_aleph/ | {
"a_id": [
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"text": [
"Basically, to define an aleph number, you take all the aleph numbers that came before it. Then you count up how many ways you can put that many objects in order, and *that* number is your new aleph numb... | [] | [
"http://www.reddit.com/r/explainlikeimfive/comments/x86wt/aleph_numberswhaaat/"
] | [
[],
[],
[]
] | |
20golm | why does it seem like we don't hear a lot about north africa in regard to wwii? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/20golm/eli5_why_does_it_seem_like_we_dont_hear_a_lot/ | {
"a_id": [
"cg320lv",
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"score": [
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6
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"text": [
"Because America was barely involved in Africa ",
"The short answer is because the North African Campaign was a sideshow. It served no real tactical purpose for the Axis and it was theirs to lose, really. \n\nYou mostly h... | [] | [] | [
[],
[]
] | ||
3excb8 | why is sugar bad in soda/energy drinks but not juice? | Red Bull has 39g of sugar and that's been labeled bad. A small Naked juice has 57g but no one says Naked juice is unhealthy. What's the difference? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3excb8/eli5_why_is_sugar_bad_in_sodaenergy_drinks_but/ | {
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"text": [
"Nothing. Sugar in juice is just as unhealthy as sugar in soda. \n\nPeople just don't *think* that there's that much sugar in juice.",
"The sugar is bad i... | [] | [] | [
[],
[],
[],
[],
[]
] | |
2k35pb | how do movies or television shows recreate the abandoned city look or zombies invaded town look, obviously they have large budgets but how do they go about it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2k35pb/eli5_how_do_movies_or_television_shows_recreate/ | {
"a_id": [
"clhgboc",
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"score": [
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"text": [
"A lot of the time, they close down the streets for a short time. 28 days later got London to look deserted by shooting before the sun came up and closing the streets off. For the larger landscape views, they just edit with c... | [] | [] | [
[],
[
"http://youtu.be/4ypn0KI43hE"
]
] | ||
62804t | why do large telecom, cable, and internet providers have such a culture of poor customer service? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/62804t/eli5_why_do_large_telecom_cable_and_internet/ | {
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"dfkgfwv",
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"score": [
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"text": [
"In the most simple terms, customer services does not make the company any money. In fact it COSTS them money, so ... | [] | [] | [
[],
[],
[],
[],
[],
[],
[]
] | ||
70jxi7 | how do tv shows like forensic files find such perfect look-alikes to reenact scenes? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/70jxi7/eli5_how_do_tv_shows_like_forensic_files_find/ | {
"a_id": [
"dn3pz2t"
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"score": [
3
],
"text": [
"The industry company called Central Casting keeps a database of over 100,000 actors and actresses seeking work. They can query this database on a wide range of attributes including appearance, so they can quickly find someone close. Hollywood mak... | [] | [] | [
[]
] | |
46y686 | why is seafood so much more expensive than land based meat? | Seems like land based animals would cost more because you have to had the land to raise them, feed them, veterinarian care, etc. With Seafood all of that is done for you, you just have to go catch it and cook it. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/46y686/eli5_why_is_seafood_so_much_more_expensive_than/ | {
"a_id": [
"d08pa3b",
"d097y6f"
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"score": [
9,
2
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"text": [
"Because it can only be collected from the sea.\n\nIf you live in a coastal city seafood is often very cheap, but if you live inland it has to be shipped to you, and it has to be kept from spoiling. That is expensive. ",
... | [] | [] | [
[],
[]
] | |
bjnhg9 | why does pain feel more painful when you arent prepared for it? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bjnhg9/eli5_why_does_pain_feel_more_painful_when_you/ | {
"a_id": [
"em9m1bh"
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"score": [
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"text": [
"The element of surprise! Your body can unconsciously prepare for certain things. For instance: if you drink coffee everyday, at 8am, after a while your body begins to prepare for it by producing the \"antidote\" to caffeine. Very similar to how e... | [] | [] | [
[]
] | ||
1mxttv | why do schools and colleges spend so much money on administration, instead of teachers, construction, lower tuition, etc.? | Partially inspired by [this thread.](_URL_0_) | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1mxttv/eli5_why_do_schools_and_colleges_spend_so_much/ | {
"a_id": [
"ccdmczw",
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"text": [
"Depends on the school. But generally, a _URL_0_ a self-contained community, and so it has to be more than just teachers. It has to have dining facilities, police, tutors, IT, roads, all that stuff.",
... | [] | [
"http://www.reddit.com/r/news/comments/1mxbk0/today_these_itinerant_teachers_make_up_a_whopping/"
] | [
[
"college.is"
],
[],
[]
] | |
3n7y73 | what are the purpose of butt plugs? | Like do they stimulate something or? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3n7y73/eli5_what_are_the_purpose_of_butt_plugs/ | {
"a_id": [
"cvlljkb",
"cvlm5vh"
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"score": [
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5
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"text": [
"a) Sexual pleasure through anal stimulation during masturbation.\n\nb) A way to stretch out and exercise the sphincter muscles for easier anal sex, to be able to fit larger objects in one's anus and for more pleasurable a... | [] | [] | [
[],
[]
] | |
4agyjs | why are cars in professional racing almost identical? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4agyjs/eli5_why_are_cars_in_professional_racing_almost/ | {
"a_id": [
"d10ac6q",
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10,
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"text": [
"Some classes have very strict rules about just about every aspect of the car. Some in fact run cars that are as close to identical as they can be made. The idea is to take the ca... | [] | [] | [
[],
[],
[],
[]
] | ||
efb3yy | why do baloons do a huge bang when popped | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/efb3yy/eli5_why_do_baloons_do_a_huge_bang_when_popped/ | {
"a_id": [
"fbzds4t"
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"score": [
5
],
"text": [
"The air in a balloon is at a higher pressure than its surroundings because the elastic tension of the balloon skin is pulling inwards. ... The high-pressure air that was inside the balloon is now free to expand and this creates a pressure wave t... | [] | [] | [
[]
] | |
5yl25f | why do camera lenses have to focus if they're capturing in 2d? | As I understand it our eyes need to focus because they're pairing two flat images to make it one 3D image with depth. Camera lenses, however, need to focus even though they're capturing in 2D, so I imagine there must be some different mechanism in there. What exactly is going on? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5yl25f/eli5_why_do_camera_lenses_have_to_focus_if_theyre/ | {
"a_id": [
"deqwioa",
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"text": [
"No, you are mixing two different things. Our eyes have to *converge* because they are combining two images. Converging is the action where your eyes turn slightly toward the center of your face, so they... | [] | [] | [
[],
[
"http://static.giantbomb.com/uploads/original/6/65562/2022820-accomodation.png"
],
[
"https://en.wikipedia.org/wiki/Pinhole_camera",
"http://static.giantbomb.com/uploads/original/6/65562/2022820-accomodation.png"
]
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3purw3 | what happens if you just keep applying skin lotion? | Like say to the same spot, several times a day. Would our skin get overly moisturized or would it just stop absorbing the lotion? What, if any, side effects would it have? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3purw3/eli5_what_happens_if_you_just_keep_applying_skin/ | {
"a_id": [
"cw9mbky",
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"score": [
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8,
3
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"text": [
"Eventually it'll stop absorbing. You'll get an awful rash from the friction. The skin will break down after several hours of light friction and slough off. It'll be like an awful sunburn. ",
"Why d... | [] | [] | [
[],
[],
[]
] | |
1hdg9c | the implications of the recent scotus ruling on the voting rights act. | Both legally and practically, when taking into account the current demographics of the constituencies of the states who will be most effected. Also, how quickly could this decision be reversed if Roberts, Thomas, Scalia, Alito, or Kennedy died or retired and a more liberal justice was appointed by Obama or the next pre... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1hdg9c/eli5_the_implications_of_the_recent_scotus_ruling/ | {
"a_id": [
"cat9edn",
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"score": [
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4
],
"text": [
"Section 5 of the Voting Rights Act says that certain states and counties, identified using a formula found in Section 4, cannot make changes to their election laws without having the federal Department of Justice or a federa... | [] | [] | [
[],
[]
] | |
9rwxlv | how does an infant transition from receiving oxygen through the placenta to breathing? how is there a constant supply of oxygen during labor? are there dangers to the brain? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9rwxlv/eli5_how_does_an_infant_transition_from_receiving/ | {
"a_id": [
"e8k9mcp",
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"score": [
8,
8,
5
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"text": [
"The umbilical cord attaches the baby to the mother's blood supply, so the baby does keep receiving oxygen (through the blood) during the birth process. If you google it, the minimum recommended wait ti... | [] | [] | [
[],
[],
[]
] | ||
5srl31 | how are animals trained to sniff out drugs? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5srl31/eli5how_are_animals_trained_to_sniff_out_drugs/ | {
"a_id": [
"ddhb5tu"
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"score": [
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"text": [
"Basically the same way they are taught to sit or roll over\n\nDogs have an incredible sense of smell (like super freakishly good) - the dogs that are selected to become sniffer dogs are selected as ones that show both a strong talent and desire f... | [] | [] | [
[]
] | ||
33dc6n | why aren't legless lizards considered snakes? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/33dc6n/eli5_why_arent_legless_lizards_considered_snakes/ | {
"a_id": [
"cqjs2ac",
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"score": [
3,
2
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"text": [
"We don't classify animals by what they look like - we classify them by their evolutionary history, and how close they are to their relatives. Lizards and snakes have been evolving separately for millions of years, but lizar... | [] | [] | [
[],
[]
] | ||
348rv9 | does someone with stronger, bigger muscles have a greater resistance to pain than a skinny, scrawny person? | If a 6'5'', 110 lb. guy fell from a tree, would he be more prone to injury or pain than the 6'5'' 220, built guy simply because of the added muscle cushion?
| explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/348rv9/eli5_does_someone_with_stronger_bigger_muscles/ | {
"a_id": [
"cqscdlb",
"cqscj9f"
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"score": [
3,
2
],
"text": [
"The 220 would be vastly more prone to injury and pain in this example due to weight. Imagine if at 110 he landed feet first with just an ankle sprain. Now add another 110 pounds and maybe that's a fractured tibia. \n\nIn s... | [] | [] | [
[],
[]
] | |
6910rp | why isn't it good to have a lot of vitamins at once? | I'm specifically talking about gummy vitamins/pills. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6910rp/eli5why_isnt_it_good_to_have_a_lot_of_vitamins_at/ | {
"a_id": [
"dh2tuul",
"dh2uhkk",
"dh2xvbo"
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"score": [
7,
5,
3
],
"text": [
"The difference between a thing being healthy, and a thing being unhealthy, is quantity. Vitamins are necessary for human survival, but you can also overdose on them. Overdosing on vitamins can have vari... | [] | [] | [
[],
[],
[]
] | |
1ua17i | what characteristics does a film need to win an oscar for best picture? | Some movies that win don't necessarily get good reviews. For example I read a review for "Extremely Loud and Incredibly Close" in which the critic wrote that they believed the movie was made in such away that it would be considered for an oscar. I don't understand how this would be done without also making a quality mo... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ua17i/eli5_what_characteristics_does_a_film_need_to_win/ | {
"a_id": [
"ceg0dco",
"ceg1rqh",
"ceg27aj"
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"score": [
4,
2,
2
],
"text": [
"Most of the academy's voters must like it.",
"It's important to remember that critics do not vote for Oscars. Members of the Academy (directors, actors, cinematographers, screenplay writers etc) vot... | [] | [] | [
[],
[],
[
"http://i.imgur.com/LhS0fbY.jpg",
"http://www.reddit.com/r/movies/comments/1pi3nc/how_to_win_an_oscar_a_visual_demonstration_of_the/"
]
] | |
9shz53 | why is falling so serious for older people? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9shz53/eli5_why_is_falling_so_serious_for_older_people/ | {
"a_id": [
"e8ow5x7"
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"score": [
4
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"text": [
"Old people's bones are much more brittle, typically. With use, people's joints also get worn out, making a fall that much more serious. Also, skin deteriorates, making it easier for old people to begin bleeding. "
]
} | [] | [] | [
[]
] | ||
2ao70u | why does it seem like there are no unbiased news sources? | I prefer to form my own opinions and views on topics, especially things of a political nature. But I can't seem to find a news source that actually just gives me straight facts. (Especially not one within the US) Why has news become so focused on their political leans and why can't I find any sources that focus on j... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ao70u/eli5_why_does_it_seem_like_there_are_no_unbiased/ | {
"a_id": [
"cix354w",
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"cix3bgf",
"cix3kt4",
"cix491y"
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"score": [
22,
9,
7,
2,
3
],
"text": [
"Everybody has bias, even if they don't realize it.",
"To be human is to be biased, in one way or another.",
"In \"the good old days\" TV and radio ne... | [] | [] | [
[],
[],
[],
[],
[]
] | |
4wrelx | how do engineers build cpus with around two billion transistors in them? | To be more clear with my question, how can an engineer even account for all of the transistors? Two billion seems like a lot of work for logic gates and such. How can they fit them in there and know that it works? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4wrelx/eli5_how_do_engineers_build_cpus_with_around_two/ | {
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12,
10,
147,
29,
3,
22,
2,
21,
2,
... | [] | [] | [
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[],
[],
[],
[],
[
"https://www.youtube.com/watch?v=-GQmtITMdas"
],
[],
[],
[],
[],
[],
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[]
] | |
11h5ev | how does duracell powercheck work? | How does pressing on two little circles on the battery show how much charge is in it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/11h5ev/how_does_duracell_powercheck_work/ | {
"a_id": [
"c6mg9vs",
"c6mh21j"
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"score": [
51,
7
],
"text": [
"We should get someone with an electronics degree to answer this properly, but my understanding is that by pressing down on this strip you close a contact, effectively short-circuiting the battery with a heat-sensitive strip... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Thermochromics"
]
] | |
4k3ndh | how do those infomercials/commercials selling products know when you "call within the next 10 minutes" for whatever they addon for free? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4k3ndh/eli5_how_do_those_infomercialscommercials_selling/ | {
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"d3bukml",
"d3bulvf",
"d3buzoo",
"d3bwt0s"
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"score": [
6,
4,
2,
8
],
"text": [
"They don't actually know, and they don't actually care. That deal is the same price you can always get, regardless of when you call. They simply put a countdown in the advertisem... | [] | [] | [
[],
[],
[],
[]
] | ||
235dm0 | why do restaurants tend to dim their lights during service? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/235dm0/eli5_why_do_restaurants_tend_to_dim_their_lights/ | {
"a_id": [
"cgtm8ke",
"cgtmd6d"
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"score": [
2,
5
],
"text": [
"Well when you go to have a relaxing dinner after a long day at work would you rather have highly stimulating bright light blazing like the noon sun or would you rather have a nice soothing relaxing soft, dimmer lighting?",
... | [] | [] | [
[],
[]
] | ||
2iofhn | why dogs and cats are considered to be "enemies"? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2iofhn/eli5_why_dogs_and_cats_are_considered_to_be/ | {
"a_id": [
"cl3z6d8",
"cl40hmk"
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"score": [
10,
5
],
"text": [
"Dogs hunt smaller animals than them. Cats are hunted by bigger animals than them. It's a dog's instinct to chase things that run from them. It's cat's instinct to run from things that are chasing them. ",
"Decades ago, ... | [] | [] | [
[],
[]
] | ||
50d4px | what's the difference between east coast and west coast rap? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/50d4px/eli5_whats_the_difference_between_east_coast_and/ | {
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14,
14,
4
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"text": [
"I don't think it matters much anymore as today's music is bleh, but back in the 80's/90's when the \"East vs \"West\" was a thing, i'd say the east coast w... | [] | [] | [
[],
[],
[],
[],
[
"http://techno.org/electronic-music-guide/"
]
] | ||
fxwekm | how do surgeons treat injuries they've never seen before? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fxwekm/eli5_how_do_surgeons_treat_injuries_theyve_never/ | {
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"score": [
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22,
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"text": [
"Better to r/askdocs about this.",
"6 year... | [] | [] | [
[],
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[],
[]
] | ||
3977hx | why is it that when i zoom in on an image it gets pixelated but when i take the same image and use a projector to blow it up on a wall it retains its resolution? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3977hx/eli5why_is_it_that_when_i_zoom_in_on_an_image_it/ | {
"a_id": [
"cs0x6qw"
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"score": [
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"text": [
"It doesn't. Walk close to the projected image and notice it looks a bit worse. The further away you stand the better something looks. The Projector usually casts the image further away from you than the arms length separating you and your monitor... | [] | [] | [
[]
] | ||
49jlkz | why is a goods lorry's container rectangular, but a petrol tanker's is cylindrical? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/49jlkz/eli5_why_is_a_goods_lorrys_container_rectangular/ | {
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5,
3,
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"text": [
"Solid cargo generally needs a floor to be place on. If you have a bunch of boxes it's easier to pack them into a rectangular carriage than a cylindrical one.... | [] | [] | [
[],
[],
[],
[],
[]
] | |
23judh | why does confetti make the video quality go waaay down in a video? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/23judh/eli5_why_does_confetti_make_the_video_quality_go/ | {
"a_id": [
"cgxp8wu",
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"score": [
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"text": [
"video compression works by identifying portions of a video frame which stay the same between the previous frame and current one, or by identifying portions which haven't changed in appearance much but have moved over a few ... | [] | [] | [
[],
[
"http://www.reddit.com/r/explainlikeimfive/comments/23judh/eli5_why_does_confetti_make_the_video_quality_go/cgy9n05"
]
] | ||
72ckrf | what's the difference between ln and log? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/72ckrf/eli5whats_the_difference_between_ln_and_log/ | {
"a_id": [
"dnhfanz",
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"text": [
"The log(x) operator is usually expressed as base 10, or essentially the opposite function to 10^x. \n\nLn is short for natural log, or log base 'e' (approx 2.71828) or the opposite of e^x. ",
"... | [] | [] | [
[],
[],
[]
] | ||
4cgy07 | why is it better to drink liquor and then beer? | I've always heard the phrase, "liquor then beer, in the clear. Beer and then liquor, never been sicker." I was wondering why | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4cgy07/eli5_why_is_it_better_to_drink_liquor_and_then/ | {
"a_id": [
"d1i1xmo",
"d1i2c1b"
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"score": [
2,
8
],
"text": [
"That's an old wives tale that isn't exactly true, alcohol is alcohol. That being said the reason I believe they say liquor before beer is because say you have 3-4 beers in your stomach and you start doing shots. Your stomach... | [] | [] | [
[],
[]
] | |
389i7o | how do some drinks make you pee quicker than other drinks would? | If I drink a cup of coffee, I'll have to pee sooner than if I drank a cup of water. Why is that? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/389i7o/eli5_how_do_some_drinks_make_you_pee_quicker_than/ | {
"a_id": [
"crtdeyr"
],
"score": [
32
],
"text": [
"Caffeine and ethanol are [diuretics](_URL_0_), substances which encourage the body to produce urine."
]
} | [] | [] | [
[
"http://en.m.wikipedia.org/wiki/Diuretic"
]
] | |
1eg4qq | why are boxers topping the list of highest-paid athletes? | Professional boxer Floyd Mayweather, Jr has been ranked as the highest paid athlete the last two years by forbes. He has only boxed 3 matches since 2011. How come he earn more then the superstars in nba, football, golf and soccer that frequent the media alot more often? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1eg4qq/eli5why_are_boxers_topping_the_list_of/ | {
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4,
4,
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"text": [
"Think about it this way. A basketball player plays 82 games a year but revenues he generates are split among the 12-15 players on his team, coaches, and the largest share goes to the owners. The Colle... | [] | [] | [
[],
[],
[]
] | |
66oefy | why are our back muscles so relatively weak? | I understand why they aren't as strong as our legs or arms. But compared to say the abs, they're very weak. Surely stronger back muscles would lead to less damage/strain and easier lifting | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/66oefy/eli5_why_are_our_back_muscles_so_relatively_weak/ | {
"a_id": [
"dgk0g6t",
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"score": [
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"text": [
"They're designed to hold up our abdomens, and that's about it. We're supposed to use out legs and arms for strength",
"What do you mean? My upper back is stronger than my chest and my lower back is... | [] | [] | [
[],
[],
[]
] | |
3arthp | why does our sense of temperature change, in regards to air and water? | For example, if I'm in a jacuzzi before it's completely warmed and it's at about 95 degrees, I'm mostly comfortable.
When I'm in a room that's 95 degrees, I feel like I'm about to freaking die. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3arthp/eli5_why_does_our_sense_of_temperature_change_in/ | {
"a_id": [
"csffprq"
],
"score": [
6
],
"text": [
"Water and air conduct heat at different rates, with water being a fantastic conductor of heat and air being an insulator for heat. Your feeling of hot/cold is dependent on how quickly the environment takes heat away from you. And whether or not y... | [] | [] | [
[]
] | |
5m6xo8 | how come domesticated animals such as goats need to have their hooves trimmed to prevent injury? how do wild animals solve that problem? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5m6xo8/eli5_how_come_domesticated_animals_such_as_goats/ | {
"a_id": [
"dc17y8a",
"dc1800n",
"dc1814a"
],
"score": [
2,
2,
3
],
"text": [
"Wild animals experience wear and tear from walking around over rocks and earth. Domesticated animals don't experience near this amount of exposure, thus their hooves or nails may need to be trimmed",
... | [] | [] | [
[],
[],
[]
] | ||
3vnpvg | why are conflicts going on in the world right now not a world war? and when will it become one? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3vnpvg/eli5_why_are_conflicts_going_on_in_the_world/ | {
"a_id": [
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12,
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"text": [
"A world war is [defined](_URL_0_) as the most populous and powerful countries fighting each other. The middle east is troublesome, bu... | [] | [] | [
[
"https://en.wikipedia.org/wiki/World_war#Later_world_wars"
],
[],
[],
[],
[],
[]
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7ra2bh | why are cryptos primarily(always?) mined using the gpu? | This specific question came to mind, but it also solidified the thought in my mind that I don't really understand how a CPU/GPU works and its primary function. Hopefully I can give some more context through some other questions I have, in turn giving more insight to where this question is stemming from.
So, why are cr... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7ra2bh/eli5_why_are_cryptos_primarilyalways_mined_using/ | {
"a_id": [
"dsva9kt",
"dsvhuwm"
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"score": [
11,
2
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"text": [
"TLDR: Cpus run your computer, and thus have to be able to do a lot of things well at the cost of speed. GPUs are mostly just process graphics, which is mostly a monotone process. As such they are built to do few things inc... | [] | [] | [
[],
[]
] | |
4o7a9z | how do ticket buying bots actually work to buy tickets from, say, ticketmaster? | I understand the concept of how it works. I just don't understand how bots are able to navigate all of the pages necessary to complete a ticket sale and so quickly that no tickets are available by the time I log in by hand. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4o7a9z/eli5_how_do_ticket_buying_bots_actually_work_to/ | {
"a_id": [
"d4a68pm"
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"score": [
3
],
"text": [
"They basically execute all of the actions you do, expect the scripting eliminates all of the little delays introduced by a human. No moving the mouse to the text field, no typing in numbers one by one, etc. They're only limited by the speed of ex... | [] | [] | [
[]
] | |
5ynzmn | what are the historical/social reasons that cause americans to tend to define their political affiliations as a fixed variable? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5ynzmn/eli5_what_are_the_historicalsocial_reasons_that/ | {
"a_id": [
"derldib"
],
"score": [
2
],
"text": [
"In the United States, the Democratic party has for decades been the party of coastal areas and big cities, where the Republicans have been the party of rural areas and non-coastal areas.\n\nRegional affiliation rules the parties, rather than ideo... | [] | [] | [
[]
] | ||
56sj4v | the difference between an engineer, an architect, and a carpenter. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/56sj4v/eli5the_difference_between_an_engineer_an/ | {
"a_id": [
"d8lyevu",
"d8lyhds"
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"score": [
2,
4
],
"text": [
"There is a lot of overlap between architects and civil engineers. But architects are more concerned with the aesthetics and spatial uses of a building, whereas engineers would focus more on physical design requirements (suc... | [] | [] | [
[],
[]
] | ||
1vszwx | how can multiple processes on my computer be using over 100% of my cpu? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1vszwx/eli5_how_can_multiple_processes_on_my_computer_be/ | {
"a_id": [
"cevhqz1"
],
"score": [
2
],
"text": [
"if you have multiple cores, you can have multiple cpus > 100% available."
]
} | [] | [] | [
[]
] | ||
3ivptx | why are there only 16.8 million of color combinations in most rgb products? | For instance in an RGB keyboard, mouse, or monitor, why can it *only* make 16.8 million colors? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3ivptx/eli5_why_are_there_only_168_million_of_color/ | {
"a_id": [
"cuk1dzj",
"cuk1evr",
"cuk1gyv"
],
"score": [
14,
7,
3
],
"text": [
"An RGB color has 3 number: a red component, a green component and a blue component. Each of these numbers is encoded in1 byte (this is a standard). 1 byte has a range of 0 to 255, which is 256 numbers.... | [] | [] | [
[],
[],
[]
] | |
1829e2 | no win no fee lawyers. what's the catch? | Surely they can't be that confident they'll win or afford to serve just to go to waste | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1829e2/eli5_no_win_no_fee_lawyers_whats_the_catch/ | {
"a_id": [
"c8ayrfl",
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"score": [
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"text": [
"Depends, theres 3 main ways, most use a combination of these\n1.Theres a first time consultation fee\n\n2. They will take most of the money you win (so if the court gives you $10,00 the lawyer might tak... | [] | [] | [
[],
[],
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] | |
f03axn | why is it easier to read something when i’m the one holding it | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f03axn/eli5_why_is_it_easier_to_read_something_when_im/ | {
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... | [] | [] | [
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"https://en.wikipedia.org/wiki/Proprioception"
],
[],
[],
[],
[],
[],
[],
[],
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20k6ho | how does a master key work? wouldn't the key ridges be the same as a different key that isn't a master? | Say I live in a dorm and the Janitor has a master key. Since him and I both have a key that opens my door couldn't I open another persons door with my key since the master key and my key have the same ridges? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/20k6ho/eli5_how_does_a_master_key_work_wouldnt_the_key/ | {
"a_id": [
"cg416ri"
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"score": [
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"text": [
"A lock has pins inside it. Each pin is actually two, and the ridges in the right key make the place where they meet line up with the place where the cylinder (the part that turns) meets the body of the lock, so it can turn. Many locks with master... | [] | [] | [
[]
] | |
3a5k08 | what's happening when i get alcohol, lemon juice, salt etc in a wound and it stings? | What does it hurt so bad | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3a5k08/eli5_whats_happening_when_i_get_alcohol_lemon/ | {
"a_id": [
"cs9hp0w"
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"score": [
6
],
"text": [
"Each has a different mechanism of action on cells, including nerve cells. And here, I'm going to assume the wound is open exposing dermal layers and perhaps nerve endings. The very reasons why these are painful make them excellent preservatives... | [] | [] | [
[]
] | |
ky19u | why is everyone cautions about salmonella, but sushi is okay? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/ky19u/eli5_why_is_everyone_cautions_about_salmonella/ | {
"a_id": [
"c2o5xza",
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"score": [
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5,
8,
2,
15,
5,
8,
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"text": [
"Raw fish in sushi, called *sashimi*, can indeed contain bacteria or parasites. To get rid ... | [] | [] | [
[
"http://www.wolframalpha.com/input/?i=253+K"
],
[],
[],
[],
[
"http://www.wolframalpha.com/input/?i=253+K"
],
[],
[],
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3gb7ef | could we have another plague outbreak? | With the recent news of people in colorado getting the Plague, could we have another outbreak, like the one that wiped out a lot of the population? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3gb7ef/eli5could_we_have_another_plague_outbreak/ | {
"a_id": [
"ctwina1"
],
"score": [
2
],
"text": [
"Not like before, no. \n\nModern sanitation as well as advances in how we handle the sick and the dying mean that it might try to start but would never advance to the levels seen in the middle ages. We were still throwing our sewage in the stree... | [] | [] | [
[]
] | |
7b5z6k | how do fish and other aquatic animals deal with the change in pressure from going from shallow water into the deeper parts? | I know most species kind to stay around a certain depth but some species go from a miles down to near the surface. The pressure difference must be insane so how do they compensate for that | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7b5z6k/eli5_how_do_fish_and_other_aquatic_animals_deal/ | {
"a_id": [
"dpfg2qe",
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"score": [
9,
3
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"text": [
"Because fish don't have air inside them - they have water, due to having no lungs. Water isn't compressible (well, not much), and as a result they don't get compressed at significant depths. \n\nWhales deal with things diffe... | [] | [] | [
[],
[]
] | |
2l3nik | how do professional coaches find elite athletes? | I'm sure there are numerous examples but how did they pick Tom Brady over all the others? Don't get caught up on the player(s) the real question is:
Hundreds of players who play the same position show up to a combine (or the such) how exactly are the coaches able to compare them to one another? Especially those who ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2l3nik/eli5_how_do_professional_coaches_find_elite/ | {
"a_id": [
"clr5pgy"
],
"score": [
2
],
"text": [
"There is definitely a huge component of luck involved. \n\nThe short and far too simple answer is scouts look at two things: measurables and intangibles.\n\nMeasurables are straightforward. How tall is a guy? How fast can he run and jump? Etc. Et... | [] | [] | [
[]
] | |
79nsng | what happens to dead cells | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/79nsng/eli5_what_happens_to_dead_cells/ | {
"a_id": [
"dp3d7ii"
],
"score": [
2
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"text": [
"Your body has a waste disposal system. It grabs stuff that shouldn't be there and expels it with the rest of the waste. Ever wonder why specific bodily waste is brown? That's dead blood cells. \n\n"
]
} | [] | [] | [
[]
] | ||
6yvr2t | what happens if you are payed counterfeit money for a good or service? | For instance, lets say you are payed $500 dollars to fix a fridge or something, but when you go to deposit money, you find it is counterfeit cash. What do you do with the counterfeit cash, and is there anyway to get compensation? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6yvr2t/eli5_what_happens_if_you_are_payed_counterfeit/ | {
"a_id": [
"dmqhrkn"
],
"score": [
2
],
"text": [
"In Denmark, they will spot the counterfeit money, and take it. Police will be called and you will have to give them a statement. If you really dont have any idea you had the illegal cash, you will simply loose the money, and once you told them wh... | [] | [] | [
[]
] | |
saqnv | how the five primary senses work | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/saqnv/eli5_how_the_five_primary_senses_work/ | {
"a_id": [
"c4ci4gc"
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"score": [
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"text": [
"**Touch** \nYour body is covered in things called nerves. There are nerves on your skin, in your mouth, in your nose, all over the place. Each nerve has a special job. Some are for noticing heat or cold, wet or dry, rough or smooth or for not... | [] | [] | [
[]
] | ||
duql2u | why do humans pack bond with so many species/things | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/duql2u/eli5_why_do_humans_pack_bond_with_so_many/ | {
"a_id": [
"f7ay7li"
],
"score": [
2
],
"text": [
"Among mammals at least, humans are the most prosocial species we've ever discovered. No other mammal lives in groups as large as us, and maintains relationships with as many unique individuals as us. Furthermore no other mammal practices sharing ... | [] | [] | [
[]
] | ||
1b1qfe | where do movies get newborn babies? | I get that they're usually just slightly older babies but sometimes it seems that they're fresh out of the womb. Surely they can't just bring one straight from the hospital when they're born. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1b1qfe/eli5where_do_movies_get_newborn_babies/ | {
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"c92ybuf",
"c92yrkz",
"c92zdma",
"c92zi71",
"c9306d4",
"c9312jz",
"c... | [] | [] | [
[],
[],
[],
[],
[],
[],
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"http://www.slate.com/articles/news_and_politics/explainer/2007/06/where_do_hollywood_babies_come_from.html"
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1vdjnb | how does investing in a startup work? and how do you make a profit as an investor? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1vdjnb/eli5_how_does_investing_in_a_startup_work_and_how/ | {
"a_id": [
"cer5szi",
"cer5yo4"
],
"score": [
3,
4
],
"text": [
"Same as investing anywhere else, you give them money so they can do business.\n\nThe difference is that you are not investing in a proven company but one that may or may not succeed.\n\nYou are typically given a share of own... | [] | [] | [
[],
[]
] | ||
2uv093 | in films, a syringe wielding character will often inject his victim wherever he manages to jab the needle. depending on what chemical was being injected and where it ended up, what might be the effect or lack thereof? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2uv093/eli5in_films_a_syringe_wielding_character_will/ | {
"a_id": [
"cobwte7",
"coca6pp"
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"score": [
6,
2
],
"text": [
"[](/twinurse)This is a fairly broad question with a lot of variables to take into account. In general, though, if you're just stabbing wherever and pushing the plunger, what you are doing is known as an **intramuscular** inj... | [] | [] | [
[],
[]
] | ||
cardpd | how would streaming video games increase input lag/not be ideal? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cardpd/eli5_how_would_streaming_video_games_increase/ | {
"a_id": [
"etakapp",
"etal14x"
],
"score": [
5,
5
],
"text": [
"No, streaming a game doesn't load the game data onto your RAM. The game is running on the server's RAM, and the only thing being sent to you is picture and sound data so you can see and hear the game that's running on the se... | [] | [] | [
[],
[]
] | ||
313pht | what's the difference in pain from "feeling the burn" and actual muscle injury? | As I know, lactic acid causes the pain you feel the day after exercising (which may be proven wrong soon, but that's besides the point). How can one tell the difference between this normal pain and injury? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/313pht/eli5_whats_the_difference_in_pain_from_feeling/ | {
"a_id": [
"cpy5hg8",
"cpy5uw0"
],
"score": [
4,
2
],
"text": [
"\"Feeling the burn\" is caused by a buildup of lactic acid on your muscles from you breaking down the contractile proteins that make up your muscle fibers. It it generally a feeling of muscle weakness and tenderness, and is ... | [] | [] | [
[],
[]
] | |
cvd65i | how does food change color as it passes through your digestive system? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cvd65i/eli5_how_does_food_change_color_as_it_passes/ | {
"a_id": [
"ey3xdzx"
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"score": [
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"text": [
"Your body adds bile to the food as it's being broken down. Bile is a digestive juice that is dark green. It colors everything the same color. As the food travels through your digestive tract, most of it is absorbed, but a lot of the bile remains... | [] | [] | [
[]
] |
Subsets and Splits
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