q_id stringlengths 5 6 | title stringlengths 3 296 | selftext stringlengths 0 34k | document stringclasses 1
value | subreddit stringclasses 1
value | url stringlengths 4 110 | answers dict | title_urls list | selftext_urls list | answers_urls list |
|---|---|---|---|---|---|---|---|---|---|
60isjd | why does a planet that is very close to its star (or a moon to its planet) often becomes tidally locked ? | Title says it all. I don't really understand why gravity affects the rotation of another celestial body. The only way I could make sense of it is if one side of the planet/moon had more mass than the other, and therefore was more attracted, but that doesn't sound right. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/60isjd/eli5_why_does_a_planet_that_is_very_close_to_its/ | {
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"df6qk8d",
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"score": [
2,
2,
2
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"text": [
"The Earth is 7900 miles across and the moon is 238900 miles away.\n\nFor the earth to rotate, a spot on the equator has to move 7900 miles further away from the moon. This takes energy to do, so the Mo... | [] | [] | [
[],
[],
[]
] | |
52iltb | how can radiation dose from x-rays be measured in natural background radiation? | _URL_0_
This site shows measurements of various xrays by amount of normal background radiation but how can that be? A CT scan is equal to 3 years with of background radiation? My reasoning is that the radiation of a CT scan within a few minutes will *hit harder* than having it spread out over several years normally si... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/52iltb/eli5how_can_radiation_dose_from_xrays_be_measured/ | {
"a_id": [
"d7klop1",
"d7ks7dl"
],
"score": [
4,
2
],
"text": [
"If I am understanding your question, you are not wrong.\n\nProviding information about how much radiation a device will deliver to you by comparing it to how much you get every day it only done because telling someone they g... | [] | [
"http://www.radiologyinfo.org/en/info.cfm?pg=safety-xray"
] | [
[],
[
"https://en.wikipedia.org/wiki/Goi%C3%A2nia_accident"
]
] | |
d1bzu1 | huge cranes | How do they move those huge cranes. Its been haunting me for years. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/d1bzu1/eli5_huge_cranes/ | {
"a_id": [
"ezk79gl"
],
"score": [
12
],
"text": [
"Cranes build themselves by raising their top section up on stilts and then lifting a piece of it's 'neck' up and then into the open section. You can see a video of this happening here. Outside of that, they're just moved to building sites in lar... | [] | [] | [
[
"https://www.youtube.com/watch?v=vx5Qt7_ECEE"
]
] | |
8k5b51 | how buick actually sold so many of those cars that are associated with old people. you know the ones. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8k5b51/eli5_how_buick_actually_sold_so_many_of_those/ | {
"a_id": [
"dz4xdpm"
],
"score": [
3
],
"text": [
"They know their audience and cater to their desires. The biggest difference between an old person car and all else is they have very soft suspensions. Old people have old backs, and they don't like a rough ride. If you've never driven in one, you... | [] | [] | [
[]
] | ||
kq5ar | how does microwavable popcorn work? | and why do some of the popcorn kernels remain unpopped? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/kq5ar/eli5_how_does_microwavable_popcorn_work/ | {
"a_id": [
"c2m9zov",
"c2m9zov"
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"score": [
2,
2
],
"text": [
"Microwaves work by agitating the water inside food. The water heats up and heats the food around it as well.\n\nInside the kernels, the heat is causing the water to turn to steam. This creates extremely high pressure inside ... | [] | [] | [
[],
[]
] | |
4dgx2f | why have some states in the us established laws requiring people clearly old beyond the age restriction to show their id when buying alcoholic beverages? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4dgx2f/eli5_why_have_some_states_in_the_us_established/ | {
"a_id": [
"d1qscpg",
"d1qspk6"
],
"score": [
9,
2
],
"text": [
"Because how someone looks is subjective and the laws need to be objective where possible.\n\nRequiring everyone to show ID regardless of how old they appear is inconvenient, but perfectly fair.",
"They are erring on the ... | [] | [] | [
[],
[]
] | ||
77bh5c | what is lifo, fifo & fish in accounting? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/77bh5c/eli5what_is_lifo_fifo_fish_in_accounting/ | {
"a_id": [
"dokj0y4",
"dokjt1q"
],
"score": [
12,
2
],
"text": [
"FIFO is First In, First Out. It means that your oldest transactions or items are to be processed first, to prevent overdue balances or spoiled stock (it is used very often in retail and billing)\n\nLIFO is Last In, First Ou... | [] | [] | [
[],
[]
] | ||
590cpy | when we get hunger pangs, is it only because there is no food in our stomach or because we need energy and nutrients? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/590cpy/eli5_when_we_get_hunger_pangs_is_it_only_because/ | {
"a_id": [
"d94mqr4"
],
"score": [
2
],
"text": [
"Basically, your stomach has \"sensors\" that let your brain know it's full of food. However, our stomachs evolved to eat simple proteins and vegetation, which are very light in calories and high in nutrition. The calorie-and-carb-dense food that ... | [] | [] | [
[]
] | ||
3zd4c8 | how does "hey siri" work on my iphone 6s? are siri and/or others listening to every lame conversation i have or is some other black majic at work? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3zd4c8/eli5_how_does_hey_siri_work_on_my_iphone_6s_are/ | {
"a_id": [
"cyl6f3y"
],
"score": [
5
],
"text": [
"Yes, that's exactly what they're doing. Siri and Android's thing are listening to everything you say and waiting for that key phrase. On Android devices there is sometimes a CPU core dedicated just to that. "
]
} | [] | [] | [
[]
] | ||
x3l2k | car engines. | I've tried reading other stuff, but it gets really technical and I can't quite understand it. There are a few things I want to know.
1.) What makes a motor more powerful?
2.) What are the differences between my generic 4-door car engine, a big rig, and an F1?
3.) When it comes to muscle cars or cars that have been ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/x3l2k/eli5_car_engines/ | {
"a_id": [
"c5iw1jl",
"c5iw20h",
"c5iw6ud",
"c5j07un"
],
"score": [
9,
22,
7,
2
],
"text": [
"1\\. Above all, power comes from more displacement, which is the difference in volume between when all your cylinders are at the bottom of their stroke and at the top of their st... | [] | [] | [
[
"http://jalopnik.com/5479359/this-is-what-a-ferrari-f1-piston-looks-like"
],
[],
[],
[]
] | |
36w5ym | why do fire vehicles have chains that dangle from their undercarriage? | I imagine it's probably some sort of auditory feedback for ground clearance, but not too sure. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/36w5ym/eli5_why_do_fire_vehicles_have_chains_that_dangle/ | {
"a_id": [
"crhl307",
"crhl3ip",
"crhl4sr"
],
"score": [
5,
10,
5
],
"text": [
"It dissipates any static electric charge that might build up due to the fact that, by virtue of the rubber tires, they are not electrically grounded. Hospital beds have typically have these as well. ",... | [] | [] | [
[],
[
"https://www.youtube.com/watch?v=EwLCOqIUvsU"
],
[]
] | |
dwycgp | if cells split in half, why doesnt a baby in the womb double in size from one day to the next? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dwycgp/eli5_if_cells_split_in_half_why_doesnt_a_baby_in/ | {
"a_id": [
"f7mb43q",
"f7mb6m6",
"f7mbjv6",
"f7mcedc"
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"score": [
7,
10,
5,
3
],
"text": [
"Because the cells are not of uniform size. When you see cell division under a microscope, the new cells are far smaller than the original cell.",
"Conservatio of mass - if a c... | [] | [] | [
[],
[],
[],
[]
] | ||
a8d25w | why is it so easy to take out loans and credit cards in children's and young adults names in america. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/a8d25w/elif_why_is_it_so_easy_to_take_out_loans_and/ | {
"a_id": [
"ec9ot3q",
"ec9s1gd"
],
"score": [
3,
2
],
"text": [
"Banks and creditors see you as a good investment. Get you in debt early and keep making money off of you for years to come. Having a clean credit report is another reason but with out any credit history you're going to get a... | [] | [] | [
[],
[]
] | ||
c0bzd8 | what causes glitched videos? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/c0bzd8/eli5_what_causes_glitched_videos/ | {
"a_id": [
"er3l1v5"
],
"score": [
2
],
"text": [
"I'm assuming someone can answer better than me. To make the file size of videos smaller, we do what's called compression. I think in most compression formats, instead of saving the data for the red, blue, and green for pixels, the data is saved a... | [] | [] | [
[]
] | ||
2gt4e4 | how do burning arrows stay lit after the immense acceleration they experience being shot from a bow? | I know they are dipped in some form of fuel prior to being shot, but it just seems to me that a flame would go out, either upon launch, when the arrow goes from stationary to extremely fast in a fraction of a second, or while flying through the air. It seems the air resistance could be enough to put out a flame, consid... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2gt4e4/eli5_how_do_burning_arrows_stay_lit_after_the/ | {
"a_id": [
"ckm9dat"
],
"score": [
4
],
"text": [
"Depending on the fuel used, it can be almost comically challenging to put it out. If you've ever dealt with a gas fire, you'll know what I mean. I'd wager they were using coal-tar or peat or natural gas of some sort -- though I'm a little out o... | [] | [] | [
[]
] | |
3cha1t | how does a judge release cosby's documents that was sealed as part of the settlement just because he spoke out on some issues 40 years later. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3cha1t/eli5_how_does_a_judge_release_cosbys_documents/ | {
"a_id": [
"csvk41i"
],
"score": [
2
],
"text": [
"To be clear, it's 10 years later not 40.\n\nAnd the answer is that in the US we have a limited right of privacy which is balanced against the rights of the press and public. In general court documents must be open - its a public record of a publ... | [] | [] | [
[]
] | ||
8wp8sh | why do some medications pride themselves on being steroid free when other prescribed medications use steroids? | Like I was recently prescribed steroids for my server poison ivy, but then I see commercials where they pride themselves on. Ring free of steroids. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8wp8sh/eli5_why_do_some_medications_pride_themselves_on/ | {
"a_id": [
"e1xc4bp",
"e1xc5ll"
],
"score": [
7,
2
],
"text": [
"Sometimes steroids are helpful, sometimes they aren't. If you want steroids you don't get the steroid free medications and vice versa. Why do you think some foods are proudly dairy free while others are proudly made with dai... | [] | [] | [
[],
[
"https://www.mayoclinic.org/steroids/art-20045692"
]
] | |
4jnswf | why does drinking alcohol "burn," and what makes some liquors "smoother" than others? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4jnswf/eli5_why_does_drinking_alcohol_burn_and_what/ | {
"a_id": [
"d383vw7",
"d3873br"
],
"score": [
8,
2
],
"text": [
"From Google:\n\nAlcohol, especially in high concentrations, will irritate the oral mucosa (we don’t like saying it as much as you don’t like reading it, but it’s just the mucous membrane lining the inside of your mouth). Tha... | [] | [] | [
[],
[
"https://youtu.be/v5Vwv4eWvL8"
]
] | ||
7rxvov | what causes crt tv's to blop away when turned off? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7rxvov/eli5_what_causes_crt_tvs_to_blop_away_when_turned/ | {
"a_id": [
"dt0fdpw",
"dt0ordh"
],
"score": [
10,
4
],
"text": [
"I assume you mean how the edges appear to kind of come slamming down into the middle. Its probably due to the fact that there are two capacitors that are in control of the horizontal and vertical synchronization of the elec... | [] | [] | [
[],
[]
] | |
auwjgk | when people say something “rewires your brain,” what does that mean in terms of physiology? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/auwjgk/eli5_when_people_say_something_rewires_your_brain/ | {
"a_id": [
"ehb28g6",
"ehb2f7q",
"ehb6dwx"
],
"score": [
3,
5,
2
],
"text": [
"Every time you learn or change your behavior you're rewiring your brain at the cellular level. The phrase is vague. ",
"It's mostly a pop-culture fad and/or scare tactic. It \\*seems\\* like it's si... | [] | [] | [
[],
[],
[]
] | ||
5vf245 | donated human blood only has a shelf life of about 21 days, what happens to the gallons of un-used human blood if it never finds a recipient? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5vf245/eli5_donated_human_blood_only_has_a_shelf_life_of/ | {
"a_id": [
"de1jxr6",
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"score": [
119,
5,
221,
58,
... | [] | [] | [
[],
[],
[],
[
"http://www.deadlinenews.co.uk/2015/07/23/one-in-ten-blood-donations-is-wasted-in-scotland/"
],
[],
[],
[],
[
"http://www.allgov.com/news/where-is-the-money-going/selling-donated-blood-is-big-business-in-us-140709?news=853635"
],
[
"http://www.radiolab.org/story/308403-... | ||
3969ax | why are windmills not installed on bridges for renewable energy? | I live in the Bay Area and there are 5 bridges crossing the bay that always seem to be windy. Why not put windmills on them? No planning issues (state owned), no noise issues (there are already cars on them), no eye sore, (out of the way of people). So why not?
Edit: Great answers, always wondered why. Perhaps they ca... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3969ax/eli5_why_are_windmills_not_installed_on_bridges/ | {
"a_id": [
"cs0o6fv",
"cs13vmj"
],
"score": [
7,
2
],
"text": [
"Because mounting devices that have a large amount of vibration on bridges is an exceedingly dangerous plan.",
"A little Googling shows that big turbines usually operate in the 30-60 MPH range. I wouldn't want to be on a... | [] | [] | [
[],
[]
] | |
b294fz | difference between photons and photoelectrons. | I understand that they are incorporated to an extent. Still having troubles understanding how they're different. Please dumb it down. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/b294fz/eli5_difference_between_photons_and_photoelectrons/ | {
"a_id": [
"eir3nhu"
],
"score": [
4
],
"text": [
"A photon is the particle that makes up light and other wavelengths of electromagnetic radiation. An important aspect is they carry a specific energy depending on wavelength, and if that energy is higher than the binding energy of an electron in a... | [] | [] | [
[]
] | |
1ndm8l | in world war 2, to go home did you have to become disabled and would you get paid straight away? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ndm8l/eli5in_world_war_2_to_go_home_did_you_have_to/ | {
"a_id": [
"cchldty"
],
"score": [
4
],
"text": [
"There were a number of qualifications needed to be sent home from the front during World War II as a discharged serviceman or woman - \n\n1.) Contracting an illness that required long term recovery\n2.) Amputations\n3.) Wounds that interfered wit... | [] | [] | [
[
"www.va.gov",
"http://www.nytimes.com/2012/01/26/us/veteran-denied-disability-to-be-repaid-after-60-years.html?_r=0",
"http://en.wikipedia.org/wiki/United_States_Department_of_Veterans_Affairs",
"http://www.va.gov/opa/publications/archives/docs/history_in_brief.pdf"
]
] | ||
40cgrj | what prevents a state creating a basic nuclear bomb? | It's over 70 years since the Manhattan project, why is it so hard for nations to create their own atomic weapons? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/40cgrj/eli5_what_prevents_a_state_creating_a_basic/ | {
"a_id": [
"cyt4hj4"
],
"score": [
7
],
"text": [
"It's not *hard* as such. The basic principles of a basic atomic bomb are well-understood by pretty much everybody and the engineering challenges are far from insurmountable. But in order to make an atomic bomb, you need nuclear material, and not ... | [] | [] | [
[
"https://www.youtube.com/watch?v=69UpMhUnEeY"
]
] | |
36u4np | the diving rule in the nhl. | Long time hockey fan here. So, I never understood the diving rule in the NHL. Why do both players have to go to the penalty box if the person who is diving faked or exaggerated it. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/36u4np/eli5_the_diving_rule_in_the_nhl/ | {
"a_id": [
"crh3vmj"
],
"score": [
3
],
"text": [
"They don't both have to go if it was completely faked. If it was already a penalty which the person exaggerated then they both go."
]
} | [] | [] | [
[]
] | |
dru88n | the fundamental counting principle | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dru88n/eli5_the_fundamental_counting_principle/ | {
"a_id": [
"f6l59ih"
],
"score": [
9
],
"text": [
"All the fundamental counting principle states is that if there are X ways to do action A, and Y ways to do action B, then there are X * Y ways to do actions A and B.\n\nFor example, let's say that I'm trying to pick out my outfit for the day. I ... | [] | [] | [
[]
] | |
60hlyy | why is us politics so set on people being either conservative or liberal? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/60hlyy/eli5_why_is_us_politics_so_set_on_people_being/ | {
"a_id": [
"df6fhuh"
],
"score": [
5
],
"text": [
"Because politics in the US is \"first past the post\" (meaning 50% + 1 vote wins everything), you tend to get 2 major parties. \n\nThese parties align with ideas as part of their platform. There are a lot of ideas that are not inherently conser... | [] | [] | [
[]
] | ||
cuyjkt | how are mid air collisions avoided? how likely is it to occur in our days and how responsible are ground based personnel to keep flights safe? | Just watched a series where someone who was working in flight control, gave instructions to 2 flights and made them both collide, and was wondering how possible it is. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cuyjkt/eli5_how_are_mid_air_collisions_avoided_how/ | {
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"ey0fdfo",
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"score": [
3,
10,
2,
2,
3
],
"text": [
"Aircraft maintenance student here - anyone else feel free to chime in: \n\nTo put it simply, aircraft use a set of instruments that will alert the pilots of ... | [] | [] | [
[],
[
"https://www.youtube.com/watch?v=OrYqIU0NxHQ"
],
[],
[],
[]
] | |
3a7edb | recently i became a man and shaved my face for the first time but now pimples are popping up all over my face... why? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3a7edb/eli5recently_i_became_a_man_and_shaved_my_face/ | {
"a_id": [
"cs9ylcj"
],
"score": [
2
],
"text": [
"Irritation is a common problem with cheap razors and first-time shavers, and can cause pimples and ingrown hairs.\n\n1. Shave gently and carefully, with the grain. \n\n2. Shower/exfoliate before shaving (so dead skin doesn't clog the razor)\n\... | [] | [] | [
[]
] | ||
54thvf | why does abstaining from sex prior to an event improve your performance in sport? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/54thvf/eli5_why_does_abstaining_from_sex_prior_to_an/ | {
"a_id": [
"d84vbn2"
],
"score": [
2
],
"text": [
"Before getting to the why does it conversation, there'd need to be evidence that it actually does. At this point, there have been [no conclusive studies](_URL_0_) that support the premise of the question."
]
} | [] | [] | [
[
"http://www.neilbaum.net/sex-before-athletic-events---facts-and-myths.html"
]
] | ||
2q8z99 | why can i easily acquire a 128 gb ssd or microsd card, but not a 128 gb stick of ram? | Is it because the different types of memory require a different manufacturing process? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2q8z99/eli5_why_can_i_easily_acquire_a_128_gb_ssd_or/ | {
"a_id": [
"cn41zt3"
],
"score": [
11
],
"text": [
"Completely different types of memory. Flash memory is incredibly simple, low power, and doesn't lose it's state. The problem is it is incredibly slow (at least as far as circuits go). We also are pretty good at stacking flash memory, as heat rea... | [] | [] | [
[]
] | |
24ldpz | why do i feel the need to immediately jam my thumb in my mouth after accidentally hitting it with a hammer? | I just did this a couple if hours ago! I was wondering why everyone seems to do this before swearing or crying? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/24ldpz/eli5why_do_i_feel_the_need_to_immediately_jam_my/ | {
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"ch8b2n8",
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2,
6,
2,
6,
2
],
"text": [
"Compression might help with the inflammation.",
" Several animals - including dogs, cats, and most primates - have an instinctual drive to lick their wou... | [] | [] | [
[],
[],
[],
[],
[]
] | |
15puwy | contacting celebrities | I was wondering how one would go about contacting a specific celebrity. Hope someone knows how to go about it! | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/15puwy/eli5_contacting_celebrities/ | {
"a_id": [
"c7ophes",
"c7opp7v",
"c7or0vz"
],
"score": [
2,
2,
2
],
"text": [
"Twitter is easiest, also their Facebook page. More effective might be to contact their manager, who you can probably find on their website ",
"Celebrities have people working full time to make sure ... | [] | [] | [
[],
[],
[]
] | |
c08d8n | why does every language contain pairs words that mean the opposite of each other (e.g. "add" and "subtract"), when a negative prefix like "un-" could just be added to one of them instead? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/c08d8n/eli5_why_does_every_language_contain_pairs_words/ | {
"a_id": [
"er2k7pt",
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"text": [
"Well in English at least, \"un\" implies that you are reversing an effect that you have already applied. So, to \"un-add\" something would imply that you have added the thing already, where \"subtract\" simply means \"take ... | [] | [] | [
[],
[]
] | ||
368k4c | why do some jobs regularly drug test? | Why can't they just judge whether or not the person's work is up to their standards? If they're a good employee, what difference does it make if they do drugs recreationally?
This isn't speaking from personal experience, the concept just seems strange to me. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/368k4c/eli5_why_do_some_jobs_regularly_drug_test/ | {
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"crbp9bz",
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"score": [
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"text": [
"Because they can is the ELI5 answer\n\nFor some jobs it's because being on drugs at work can have serious safety implications - like if you are using heavy machinery, chemical, et... | [] | [] | [
[],
[],
[],
[]
] | |
233ub5 | why if i workout regularly and i miss a couple days i'm suddenly unfit as hell? | I workout almost everyday. Why is it if I miss a couple of days does my workout suddenly become so hard on the third day? It feels like I'm starting from the beginning again.
For example: usually I'll do a quick 30 press ups and there is no bother. but now I'm struggling to hit 20 without stopping.
Thank you | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/233ub5/eli5_why_if_i_workout_regularly_and_i_miss_a/ | {
"a_id": [
"cgt52w1",
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"score": [
5,
2
],
"text": [
"so many variables can affect your performance. Sleep, diet, stress, etc.\n\nDepending on the type of routine you are doing you might not be giving your body enough recovery time working out every day.",
"My first guess w... | [] | [] | [
[],
[]
] | |
72r5zd | how and why did different religions/continents agree on using anno domini to count years in the whole world? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/72r5zd/eli5_how_and_why_did_different/ | {
"a_id": [
"dnkm943",
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"text": [
"_URL_0_\n\n > The Anno Domini dating system was devised in 525 by Dionysius Exiguus to enumerate the years in his Easter table.\n\n...\n\n > The Anglo-Saxon historian the Venerable Bede, who was familiar with the work of D... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Anno_Domini"
],
[]
] | ||
23g40t | why are plastic milk crates protected by law if "misused"? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/23g40t/eli5_why_are_plastic_milk_crates_protected_by_law/ | {
"a_id": [
"cgwms19"
],
"score": [
2
],
"text": [
"Probably having to do with their being stolen by students to make shelving. They are apperently more expensive than you would think. "
]
} | [] | [] | [
[]
] | ||
28yo1c | why does the body metabolize muscle at all? why doesn't it burn just fat? | It doesn't make sense. Fat is often said to be "reserve energy," but if you starve yourself you'd lose important muscle. What's the point? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/28yo1c/eli5_why_does_the_body_metabolize_muscle_at_all/ | {
"a_id": [
"cifphmz"
],
"score": [
6
],
"text": [
"Fat might be your spare energy stores, but all that extra muscle is a source of vital proteins. You need those to rebuild *other, more important muscles*, like your heart. The heart takes way more priority than the Adonis physique of /u/Mr_Burk... | [] | [] | [
[]
] | |
2dfwtb | why is it that if i shower in the middle of the day to cool off or freshen up, i seem to sweat immediately afterwards for a bit regardless if it's hot or cold outside and is there anyway to prevent this? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2dfwtb/eli5_why_is_it_that_if_i_shower_in_the_middle_of/ | {
"a_id": [
"cjp3c5b"
],
"score": [
3
],
"text": [
"I can't answer the first part, but you can prevent it by taking cold showers."
]
} | [] | [] | [
[]
] | ||
3qashc | why are most shampoos/soaps still made in the usa and canada, but nearly all other "low-tech" products are made in china? | If it's a quality/safety issue, that's understandable, but I've noticed that even cheap Walmart/dollar-store shampoos are usually made in North America, whereas cheap brand foods are often made in China. Shampoo safety is certainly an issue since we use it everyday on our bodies, but for food it's an even greater issue... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3qashc/eli5_why_are_most_shampoossoaps_still_made_in_the/ | {
"a_id": [
"cwdjf2f"
],
"score": [
3
],
"text": [
"A big part of this comes down to cost. \"Soap\" itself is very cheap to make, so making it here isn't that big of a problem. When you go beyond just soap and start adding other things, many of those other things (possibly even the detergent/\"soa... | [] | [] | [
[]
] | |
bw4edy | how can space bend, expand, and ripple if it’s just an empty void? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bw4edy/eli5_how_can_space_bend_expand_and_ripple_if_its/ | {
"a_id": [
"epv2x96",
"epv4kgb",
"epv6i3b",
"epvdmei"
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"score": [
3,
4,
3,
2
],
"text": [
"We don't know.\n\n The best professional ideas we have are to try and treat spacetime as if it is some kind of particle field. This not gone very well at all. The most popular of t... | [] | [] | [
[],
[],
[],
[]
] | ||
cu43je | why are children's names with 'y' in them so popular in the last decade? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cu43je/eli5_why_are_childrens_names_with_y_in_them_so/ | {
"a_id": [
"exr1nyv",
"exr3geo",
"exr56bk",
"exr6q8n"
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"score": [
4,
2,
5,
3
],
"text": [
"They're trendy. Baby names ebb and flow over time. Whether it's biblical names, pop culture icons, or some other significant \"thing,\" a lot of people tend to pick names that way.... | [] | [] | [
[],
[],
[],
[]
] | ||
8wx277 | why do tray tables and seats have to be set back while planes are taking off and landing? | Genuinely curious as to why we have to put our tray tables up and put our seats forward on take off and landing. What purpose does doing it serve? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8wx277/eli5_why_do_tray_tables_and_seats_have_to_be_set/ | {
"a_id": [
"e1z3evp"
],
"score": [
5
],
"text": [
"Imagine you sitting down in your seat. Seat belt unbuckled tray table down. The 100 tons of aircraft and cargo and passengers are all buckled in. The plane is landing. Now imagine a critical failure of the landing gear. Not exploding just colla... | [] | [] | [
[]
] | |
42g4f1 | what's the pattern in this picture? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/42g4f1/eli5_whats_the_pattern_in_this_picture/ | {
"a_id": [
"cza1w7e"
],
"score": [
3
],
"text": [
"I think it's E. Is that right?"
]
} | [] | [] | [
[]
] | ||
3c5ppb | why are the numpads on a computer and phone arranged differently and why can't they be arranged the same? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3c5ppb/eli5_why_are_the_numpads_on_a_computer_and_phone/ | {
"a_id": [
"cssh4wf"
],
"score": [
6
],
"text": [
"Bell Labs tested 17 layouts.\n\nEverything was on the table for the layout of the ten buttons; the researchers' only objective was to find the configuration that would be as user-friendly, and efficient, as possible. So they ran tests. They exper... | [] | [] | [
[]
] | ||
1k30b5 | cfd's (contract for difference) | How do CFD's work and what is the point? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1k30b5/eli5_cfds_contract_for_difference/ | {
"a_id": [
"cbkv0a8"
],
"score": [
2
],
"text": [
"Let's say that I have an asset and I think the value is going to go down, but I still want to own the asset in the future. I can sell it now, wait for a bit, and then buy it again in the future.\n\nNow let's say that somebody else thinks that the... | [] | [] | [
[]
] | |
101hs5 | how do snipers avoid being detected from their muzzle flash? | Especially at night. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/101hs5/eli5_how_do_snipers_avoid_being_detected_from/ | {
"a_id": [
"c69lzgw",
"c69n10c",
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"score": [
4,
2,
2
],
"text": [
"[Flash Suppressor](_URL_0_), which dissipates the hot expanding gasses coming through the barrel, and consequently minimizes (but not totally suppresses) the sound and flame of a fired round. \n\nAlso,... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Flash_suppressor"
],
[],
[]
] | |
25jebn | how is it that companies such as the ones that make generic (walmart brand) beverages get away with basically copying name brand products? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/25jebn/eli5_how_is_it_that_companies_such_as_the_ones/ | {
"a_id": [
"chhqcxq",
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"chhzy97",
"chi0pfu",
"chi124i",
"chi1rh1",
"chi2074",
"chi20oe",
"chi2chn",
"chi2u09",
"c... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Patent",
"http://en.wikipedia.org/wiki/Trade_secret"
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[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
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"http://www.dailymail.co.uk/news/article-2508069/Aldi-successful-copies-brands-improves-quality.... | ||
3vi8kk | a probability conundrum: 100 question, multiple choice test, each with four possible answers. if i'm flat-out guessing on say 20% of the questions, would i be better off selecting the same answer (i.e. filling in "a" for every guess) or randomly guessing on each one individually? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3vi8kk/eli5a_probability_conundrum_100_question_multiple/ | {
"a_id": [
"cxnryin",
"cxnrypu"
],
"score": [
2,
2
],
"text": [
"As long as the actual answers are evenly distributed among all choices, there is absolutely no difference between picking one randomly and picking the same one every time. You'll get the same number of those correct (on ave... | [] | [] | [
[],
[]
] | ||
6wau5e | why are all the roads grey? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6wau5e/eli5_why_are_all_the_roads_grey/ | {
"a_id": [
"dm6n475",
"dm6n66x"
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"score": [
4,
3
],
"text": [
"The road is paved or resurfaced using aggregate that coated in asphalt which is originally black. Over time, traffic can wear away that asphalt coating and expose the natural grey color of the aggregate. Also UV rays from th... | [] | [] | [
[],
[]
] | ||
e2en59 | why do gpus need to support graphics apis (on a hardware level) | like for example "GPU XXX Suports DX12". which is touted as a feature on the retail box as well.
from what I understand the API is standardized for a certain graphical pipeline to draw various stuff on screen (polygon pipeline, brightness of a pixel pipeline...etc.) and it's hardware agonistic, and it's up to GPU ma... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/e2en59/eli5_why_do_gpus_need_to_support_graphics_apis_on/ | {
"a_id": [
"f8v8ncp",
"f8v8r7p"
],
"score": [
3,
3
],
"text": [
"A graphic API is indeed a standardized way to ask the GPU to do stuff (This includes drawing, as well as general computation).\n\nTo support and API, GPUs have to be able to handle all the features that the API exposes to th... | [] | [] | [
[],
[]
] | |
30oomd | why do scratches that happen when i'm showering turn bright red? why is it different to when scratches normally go white? | When I'm showering every scratch, no matter how mild will turn bright red, but scratches that happen when I'm out of the shower scratches just appear white. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/30oomd/eli5_why_do_scratches_that_happen_when_im/ | {
"a_id": [
"cpucz1q"
],
"score": [
2
],
"text": [
"When you're in the shower, the hot water causes your blood vessels to dilate, getting them closer to your skin and more visible. When you suffer a scratch or similar injury, your blood vessels also dilate, in order to help it heal faster.\n\nIt t... | [] | [] | [
[]
] | |
3uozyo | how amazon cart item price works. | I added a 500GB Sandisk SSD which was discounted by 50% at 110$. I wasnt able to check out at that time, later that day i proceeded to check out at 110$ but when i checked it was listed at 160$. Will i be able to buy at 110$ or will my order fail and i have to pay at 160$? I dig around and found bait and switched which... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3uozyo/eli5_how_amazon_cart_item_price_works/ | {
"a_id": [
"cxgm0ot",
"cxgm6u7",
"cxgmhbf",
"cxgo8e5"
],
"score": [
2,
4,
2,
2
],
"text": [
"Was it a lightning deal? If so it's basically a limited time offer. ",
"I'm just going to write it iff that you are still new to this online shopping thing. Cart is basically p... | [] | [] | [
[],
[],
[],
[]
] | |
5cpb7d | why does lava in a lava lake move so violently? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5cpb7d/eli5_why_does_lava_in_a_lava_lake_move_so/ | {
"a_id": [
"d9ybfa6"
],
"score": [
2
],
"text": [
"This lava is high temperature compared to lava flowing down a volcano. The viscosity of the lava flow is much higher due to it being cooler.\n\nSo the lava in the lava lake is hotter which means its viscosity is much lower. It acts more like wate... | [] | [] | [
[]
] | ||
3duism | what does the old roman phrase "bread and circuses" mean? | I just need an explanation on what that old saying 'Bread and Circuses' meant and some history on it. Thanks! | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3duism/eli5_what_does_the_old_roman_phrase_bread_and/ | {
"a_id": [
"ct8qwqw",
"ct8qxrl"
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"score": [
4,
4
],
"text": [
"With the technology and trade networks of the ancient world Rome could not generate enough jobs for all the people who wanted to live in the city. Without incomes many of the city's people would starve or riot. So the gover... | [] | [] | [
[],
[]
] | |
2lu2t7 | why are hexagons popularly used when portraying futuristic things? | Does it have something to do with computers/networking? What technological/futuristic properties do hexagons have?
I especially see this in video games, a few for example are:
[Sid Meyer's Civilization Beyond Earth](_URL_2_)
[Crysis 3](_URL_0_)
[Assassin's Creed (all of them)](_URL_1_) | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2lu2t7/eli5_why_are_hexagons_popularly_used_when/ | {
"a_id": [
"cly6myl",
"cly6y57"
],
"score": [
3,
2
],
"text": [
"Hexagons were introduced in Civilization V and it's not because they look futuristic. It changes the game slightly. Hexagons are now considered the go-to for turn-based strategy games.\n\nAnyway my theory on why hexagons are... | [] | [
"http://i.imgur.com/20Y1zwK.jpg",
"http://i.imgur.com/majVcfp.jpg",
"http://i.imgur.com/aBLf90s.jpg"
] | [
[],
[]
] | |
8dc40u | why do flies constantly risk their lives by landing on and flying around me, even when i’ve had a few swipes at them? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8dc40u/eli5_why_do_flies_constantly_risk_their_lives_by/ | {
"a_id": [
"dxlzzpc",
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"dxm4lok",
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"dxm5de6",
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"dxm6f27",
"dxm6mzr",
"dxm6nea",
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"dxm8fxz",
"dxm93bz",
"dxm95n5",
"dxm9wxs",
"dxmaooq",
"dxmbb9k",
"dxmckvp",
"dxmcl3w",
"d... | [] | [] | [
[],
[],
[],
[
"https://www.nytimes.com/2018/01/25/science/swatting-mosquitoes.html"
],
[
"http://www.bbc.com/news/science-environment-41284065"
],
[],
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[],
[],
[],
[],
[],
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] | ||
2ddr2z | when lightening strikes in the middle of the ocean, (i'm assuming this must happen), how far will the water carry the electricity before it's no longer harmful/deadly? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ddr2z/eli5_when_lightening_strikes_in_the_middle_of_the/ | {
"a_id": [
"cjojgur",
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"score": [
5,
50,
10
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"text": [
"I remember my science teacher telling me that he was swimming in a lake ( a rather clean one) lightning struck in the water within 50 meters. His friends were out of the water and thought he was shock... | [] | [] | [
[],
[
"http://www.straightdope.com/columns/read/2263/is-lightning-really-that-dangerous-to-swimmers",
"http://redd.it/1mm794",
"http://van.physics.illinois.edu/qa/listing.php?id=2295",
"http://scienceblogs.com/deepseanews/2008/03/17/does-lightning-kill-marine-ani/"
],
[
"https://what-if.xk... | ||
8gj4ga | suppose a new kind of product is created and someone wants to create a factory to mass produce it. how do that company manages to create/buy the machines that the factory needs? is there a kind of professional who creates that or a company who creates factories? | I am thinking about complex stuff like producing glass sheets, that require pouring the melted glass over a pool of melted tin, that is a rather complex stuff to think about, when creating the factory. That is not a stuff one comes out of thin air and demands some serious thinking.
Also imagining a factory that wants ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8gj4ga/eli5_suppose_a_new_kind_of_product_is_created_and/ | {
"a_id": [
"dyc1qxi",
"dycwc6z"
],
"score": [
18,
2
],
"text": [
"This is called tooling, and there it is an area of engineering. Tooling engineers build the systems used in factories to manufacture goods. There are sub specialties based on the type of goods being made, and some argue thi... | [] | [] | [
[],
[]
] | |
dq1kfg | how does anaerobic energy generation(via atp) differ from aerobic energy generation? | I read about aerobic respiration and the role of coenzymes in oxidizing food for replenishing ATP. The passage concluded with the explanation that because the last electron acceptor in the chain is oxygen, it is aerobic respiration.
Couldn't find a similar explanation for anaerobic respiration, so here I am.
Edit: so... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dq1kfg/eli5_how_does_anaerobic_energy_generationvia_atp/ | {
"a_id": [
"f600q8b"
],
"score": [
3
],
"text": [
"Brushing up on my intro to biochem here, so parts of this may be wrong.\n\nOk, so basically energy generation happens through the mitochondria. In aerobic respiration, you break down glucose, and breaking the glucose releases some electrons. Thes... | [] | [] | [
[]
] | |
853uok | why do our fingers randomly tingle sometimes? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/853uok/eli5_why_do_our_fingers_randomly_tingle_sometimes/ | {
"a_id": [
"dvuhh5h",
"dvuhhlc"
],
"score": [
2,
4
],
"text": [
"That could be a sign of low bloodflow, or it could be a blood rush if you were cutting of circulation.",
"That sounds like a possible nerve condition, and is not normal. Now I don't know if this is so serious that you ne... | [] | [] | [
[],
[]
] | ||
39sa3k | why major news channel (e.g. bbc, aljazeera, cnn, etc) still have weather forecast segment complete with anchor that explains weather condition in all over the world? what kind of audience need this type of information? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/39sa3k/eli5_why_major_news_channel_eg_bbc_aljazeera_cnn/ | {
"a_id": [
"cs5zlum"
],
"score": [
2
],
"text": [
"International travelers, especially business travelers tend to watch CNN or similar major cable news network. So they can see the weather forecast for where they are, where they are going next, or what it's like back home."
]
} | [] | [] | [
[]
] | ||
34a6iu | why is my hearing worsens when i am drunk? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/34a6iu/eli5why_is_my_hearing_worsens_when_i_am_drunk/ | {
"a_id": [
"cqspjj6"
],
"score": [
4
],
"text": [
"A better question might be: why is your grammar worsens when you're drunk?"
]
} | [] | [] | [
[]
] | ||
1vp9hh | why are there so many asian tourists? | Where do all the big packs come from | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1vp9hh/why_are_there_so_many_asian_tourists/ | {
"a_id": [
"ceuh1eg",
"ceuhfdv"
],
"score": [
2,
9
],
"text": [
"There's a lot of people in China and Japan, and a lot of money.\n\nThere is a big tradition of going to travel the world.\n\nBecause of language barriers, many tour companies exist.",
"Because there are so many asians :P... | [] | [] | [
[],
[]
] | |
8xgp8w | why is fortnite so incredibly successful? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8xgp8w/eli5_why_is_fortnite_so_incredibly_successful/ | {
"a_id": [
"e233xln",
"e234vr8",
"e23573y"
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"score": [
8,
2,
2
],
"text": [
"They made a free game with add ons people actually want to buy and they actually listen to their community ",
"They took what PUBG and other battle royale games did, refined it and gave it a few int... | [] | [] | [
[],
[],
[]
] | ||
89zw3o | if you have a pile of mulch/woodchips/etc and leave it long enough it can start to smoke. how? | I understand that it's the breaking down of the organic material that's generating the heat, but how in the world does it generate enough heat to start to smolder? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/89zw3o/eli5_if_you_have_a_pile_of_mulchwoodchipsetc_and/ | {
"a_id": [
"dwupabd",
"dwv8b5x",
"dwvw2jz"
],
"score": [
36,
8,
3
],
"text": [
"A large enough pile will be generating heat all through it, and the stuff in the middle has nowhere for the heat to go, so it builds up. Eventually, you'll hit the smoke point for something in the pile... | [] | [] | [
[],
[],
[]
] | |
3kyh19 | if traits like hypertrichosis (werewolf syndrome) or polydactyly (extra fingers) are dominant traits, why aren't they more common in the general population? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3kyh19/eli5_if_traits_like_hypertrichosis_werewolf/ | {
"a_id": [
"cv1k9vi"
],
"score": [
2
],
"text": [
"Just because something is a dominant trait doesn't mean it will end up spreading to everyone thanks to our old friend natural selection.\n\nIf having a trait, even a dominant trait, causes you to be less likely to survive and pass on your genes, ... | [] | [] | [
[]
] | |
6wt55w | - why do memory sizes in technology double? (example 256mb - > 512mb) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6wt55w/eli5_why_do_memory_sizes_in_technology_double/ | {
"a_id": [
"dmajk1p",
"dmajpt9"
],
"score": [
2,
7
],
"text": [
"It has to do with address locations in that memory. Because everything is in binary or base 2 if you want to make a device with more memory you have to have a way to reference the new space you have. If you add another digit... | [] | [] | [
[],
[]
] | ||
5gja33 | why does banging on electronics sometimes make them start working | Maybe newer things aren't like this very often, but I'm sure anyone over 25 remembers pounding on the top of the TV to make it stop flipping or banging the radio to reduce the static noise.
And it worked, it wasn't just confirmation bias or something, it worked every time.
I'm asking because my surround sound system ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5gja33/eli5why_does_banging_on_electronics_sometimes/ | {
"a_id": [
"daspjtd",
"dasz29d",
"dat0wwj",
"dat1dqu",
"dat1v8n",
"dat63e1",
"dati0pm",
"datocsy"
],
"score": [
440,
236,
10,
8,
89,
6,
3,
2
],
"text": [
"Usually there's an iffy solder joint or a sort of loose physical connection somewhere ... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[]
] | |
2w1ydh | what is the purpose of a rubber chicken? | Why do they exist? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2w1ydh/eli5_what_is_the_purpose_of_a_rubber_chicken/ | {
"a_id": [
"comvmn5",
"comw8es",
"comxd2h",
"comy0vo"
],
"score": [
3,
2,
3,
2
],
"text": [
"In elementary school we played a \"game\" where the teacher tossed his giant chicken down the field and us students on either side had to hit it mid-air with our smaller chickens. ... | [] | [] | [
[],
[],
[
"http://en.m.wikipedia.org/wiki/Rubber_chicken"
],
[
"http://monkeyisland.wikia.com/wiki/Rubber_Chicken_With_A_Pulley_In_The_Middle"
]
] | |
2mzhps | why does no amount of gel/spray/product keep my hair from standing back up but if i wear a hat or a hoodie for 5 minutes after i shower my hair stays flat all day? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2mzhps/eli5_why_does_no_amount_of_gelsprayproduct_keep/ | {
"a_id": [
"cm92d3p"
],
"score": [
12
],
"text": [
"because gel/spray/product binds your hairs together. It doesn't 'press' them down. \n\nThink about if we poured goop on some corn fields, and then drove through them with big trucks. They wouldn't necessarily lay all the way down. But if we ... | [] | [] | [
[]
] | ||
1kkuul | why do only the palms of your hands and the bottoms of your feet prune? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1kkuul/eli5_why_do_only_the_palms_of_your_hands_and_the/ | {
"a_id": [
"cbpymys",
"cbq5p4s"
],
"score": [
6,
2
],
"text": [
"If by prune you mean get wrinkly when wet, I believe that occurs as these palms are our key gripping mechanisms, and when wet they lose that grip. To combat this, they wrinkle to increase the surface area of the hand/foot wh... | [] | [] | [
[],
[]
] | ||
17nk9t | - if killer t-cells are so strong, then why aren't they used to kill cancer cells? | I want to know why killer t-cells aren't used in medicine to target cancer cells. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/17nk9t/eli5_if_killer_tcells_are_so_strong_then_why/ | {
"a_id": [
"c874n6a",
"c874w5b"
],
"score": [
5,
4
],
"text": [
"They are, but it's hard to get them to target the right cells. Which is the problem for most of our cancer medicine. ",
"[They have been used before](_URL_0_). It's a new treatment and there are a lot of issues to be iro... | [] | [] | [
[],
[
"http://www.telegraph.co.uk/news/worldnews/northamerica/usa/9738355/Emily-Whitehead-girl-whose-cancer-was-cured-by-HIV.html"
]
] | |
cg858k | have languages for animals developed over time similar to that of human beings, or say can a lion in this time communicate with a lion five hundred years ago? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cg858k/eli5_have_languages_for_animals_developed_over/ | {
"a_id": [
"eufcmev",
"eufeosk",
"euffpze",
"eufjlu9",
"eufmq23",
"eufn7sd",
"eufqmbn",
"eufqnko",
"euft3l2",
"eug0rvz",
"euga42q",
"eugbgls",
"eugfsqf",
"euglo7p",
"eugn6vk",
"eugyxp7",
"euh30el",
"euha4n7",
"euhd2yx"
],
"score": [
... | [] | [] | [
[],
[],
[],
[],
[
"https://en.wikipedia.org/wiki/52-hertz_whale"
],
[],
[],
[],
[],
[
"https://en.wikipedia.org/wiki/animal_language"
],
[],
[],
[],
[],
[],
[],
[],
[],
[]
] | ||
4mjoao | what did muhammad ali do to be so revered both in the ring and outside of it? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4mjoao/eli5_what_did_muhammad_ali_do_to_be_so_revered/ | {
"a_id": [
"d3vzkn7"
],
"score": [
2
],
"text": [
"Well he is considered the best boxer of all time. In the ring he defeated just about everyone you can imagine. He also had so much charisma he could sell a fight between him and a broomstick. Outside the ring the most famous thing he did was refu... | [] | [] | [
[]
] | ||
bi5kju | when you get hit, why does that part of your body feel hot to the touch? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bi5kju/eli5_when_you_get_hit_why_does_that_part_of_your/ | {
"a_id": [
"ely6vuk",
"ely6xla"
],
"score": [
2,
6
],
"text": [
"When you get punched with some weight behind it, the force breaks open your capillaries and blood comes out (bruising). Your blood is hotter than the rest of your body, so it feels hot.",
"The impact damages cells which ... | [] | [] | [
[],
[]
] | ||
6y2ef2 | what causes the urge to overshare personal issues with strangers rather than talking to someone close to you? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6y2ef2/eli5_what_causes_the_urge_to_overshare_personal/ | {
"a_id": [
"dmk5lyq",
"dmk5zam",
"dmketn7"
],
"score": [
10,
15,
4
],
"text": [
"I think the people who overshare with strangers don't have many ones they are close to, and are lonely trying to reach out",
"No consequences. You can share your secrets with fear of rejection or ... | [] | [] | [
[],
[],
[]
] | |
99j6u2 | why should we add salt and pepper to a dish toward the end of a recipe? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/99j6u2/eli5_why_should_we_add_salt_and_pepper_to_a_dish/ | {
"a_id": [
"e4o3n9b",
"e4o4obe",
"e4o6mpz",
"e4o8mpm",
"e4o930p"
],
"score": [
14,
9,
41,
20,
8
],
"text": [
"As the dish cooks the water evaporates and everything gets denser. Enough salt at first becomes too much salt as things get denser.",
"You should alway... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
9yu81e | how does an altimeter work? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9yu81e/eli5_how_does_an_altimeter_work/ | {
"a_id": [
"ea42pm1"
],
"score": [
3
],
"text": [
"There are two types of altimeters in use today:\n\n1) Pressure Altimeters measure the air pressure outside the plane. In order for this to be accurate, you need to know the ground pressure of the airport you are landing at. This led to airports... | [] | [] | [
[]
] | |
1sd3xk | what's that white line i get whenever i scratch my skin? | It's like my fingernail is a piece of chalk. What's up with that? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1sd3xk/eli5_whats_that_white_line_i_get_whenever_i/ | {
"a_id": [
"cdwby6i",
"cdwc6w6"
],
"score": [
11,
3
],
"text": [
"Dead skin being separated from the epidermis.",
"It's a temporary decrease in blood flow caused by pressure on the skin resulting from blocked capillaries. "
]
} | [] | [] | [
[],
[]
] | |
64tpbf | what is the best way to go to sleep earlier? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/64tpbf/eli5_what_is_the_best_way_to_go_to_sleep_earlier/ | {
"a_id": [
"dg4xcz3",
"dg4xdkf",
"dg4xdmy"
],
"score": [
3,
4,
2
],
"text": [
"Wake up earlier and add in extra physical activity so you're exhausted at an earlier time. ",
"The keys to reduce stimuli that has the potential to keep you awake an hour or two before bedtime. This... | [] | [] | [
[],
[],
[]
] | ||
2yl37l | why can't horse races be run without jockeys, like how dog races can? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2yl37l/eli5_why_cant_horse_races_be_run_without_jockeys/ | {
"a_id": [
"cpainf5",
"cpaiv24"
],
"score": [
8,
3
],
"text": [
"Dogs are predators. They can run races without jockeys because what they do is use the dog's natural instinct to chase a prey to guide them around the track (by using one of those fake rabbits for them to chase)\n\nHorses ar... | [] | [] | [
[],
[]
] | ||
3j3ozw | binary code: assuming that everything a computer interprets is just a bunch of 1s and 0s, where does it all begin? who told the first computer to interpret those two numbers and not some other number or character. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3j3ozw/eli5_binary_code_assuming_that_everything_a/ | {
"a_id": [
"culysh9",
"culyt6a",
"cum1e6j",
"cum5mfx",
"cumdsp3"
],
"score": [
35,
4,
10,
2,
3
],
"text": [
"1s and 0s are simply how humans interpret some physical property inside of the computer.\n\nInternally, the computer sees things like \"voltage\" and \"no v... | [] | [] | [
[],
[],
[],
[
"https://en.wikipedia.org/wiki/Z1_%28computer%29",
"https://en.wikipedia.org/wiki/George_Boole",
"https://en.wikipedia.org/wiki/Claude_Shannon"
],
[]
] | ||
23z7oi | how do websites such as google, amazon and facebook manage tens of thousands of servers worldwide and ensure a seamless experience for billions of users? | Follow up questions:
(1) Where servers are spread over the globe, is my personal data likely to be stored on the server that is closest to me geographically?
(2) If one of these data centers was destroyed in a fire or earthquake, would the other data centers pick up the slack, or is the data likely to be lost foreve... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/23z7oi/eli5_how_do_websites_such_as_google_amazon_and/ | {
"a_id": [
"ch20ecz",
"ch20iij"
],
"score": [
2,
3
],
"text": [
"Extremely basic answer:\n\nThey have built solid infrastructures which include great server hardware and top notch software. These companies hire the best professionals to maintain these systems.\n\nOften, your data is trans... | [] | [] | [
[],
[]
] | |
42bomf | when & how do we develop our sense of humour? | When I watch a video of a baby laughing her ass off at some shit, is that because it is truly the funniest shit she's ever seen, or is it just a weird reaction? Why do different babies think different weird things are funny? When does our sense of humour begin to develop? How does it develop? Is it purely social? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/42bomf/eli5_when_how_do_we_develop_our_sense_of_humour/ | {
"a_id": [
"cz9og4a"
],
"score": [
5
],
"text": [
"Your sense of humor is particular to the way your mind works, and has a lot to do with how you were socialized."
]
} | [] | [] | [
[]
] | |
4dakdp | why should i not drink milk for a few days after a stomach bug? | I've always been told not to drink milk for a few days after having a nasty bout of a stomach virus, but never had a clear explanation on why. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4dakdp/eli5_why_should_i_not_drink_milk_for_a_few_days/ | {
"a_id": [
"d1p6zkn"
],
"score": [
7
],
"text": [
"I can give you some [science](_URL_0_).\n\n > Young children with acute diarrhea, typically due to infectious gastroenteritis, may temporarily stop producing lactase, the intestinal enzyme that digests lactose. Thus, they may not digest lactose, ... | [] | [] | [
[
"http://europepmc.org/articles/pmc4276385"
]
] | |
3c0xmd | why is pdf the dominant document saving file format? seems clunky, proprietary, and annoying/buggy (like when trying to extract text and images and formatting). | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3c0xmd/eli5_why_is_pdf_the_dominant_document_saving_file/ | {
"a_id": [
"csr9zuu"
],
"score": [
3
],
"text": [
"It is one of the few formats that actually has a really decent standard on how things are supposed to be rendered, so its pretty much the only format that allows you to exchange documents that is displayed the same everywhere, and still allows yo... | [] | [] | [
[]
] | ||
2lgspe | why is dairy considered a major food group? | I don't understand why the milk of a cow meant to nourishment its calve has become a huge part of people's diet. For much time people couldn't even digest cows milk. A majority of today's adult population is lactose intolerant so what did they do before we had lactose free milk/ lactase pills? Is milk REALLY a key comp... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2lgspe/eli5_why_is_dairy_considered_a_major_food_group/ | {
"a_id": [
"clumddv",
"clumtnf",
"clunoia"
],
"score": [
11,
17,
3
],
"text": [
"No, not really. I mean, it can form a part of a healthy diet but it is not really a key component. After all, in adulthood, the big advertising feature of dairy products is calcium, which you can get ... | [] | [] | [
[],
[],
[]
] | |
33x1tt | why are buildings still largely built from brick, mortar, wood, etc. rather than standardised, mass manufactured modules? | I understand that [prefabricated buildings exist](_URL_1_) and that there are to some extent [mass-manufactured panels for such purposes](_URL_0_). I also understand lots of buildings might need special customisations and structural considerations that would prevent this type of things.
But for most smallish buildin... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/33x1tt/eli5_why_are_buildings_still_largely_built_from/ | {
"a_id": [
"cqp59un",
"cqp5n70",
"cqp5r3t",
"cqpdoik"
],
"score": [
8,
3,
7,
2
],
"text": [
"What is a brick but a small prefabricated, customizable construction unit? \n\nThe advantage is that brick and mortar are a very easy way to construct strong, but very varying buil... | [] | [
"http://en.wikipedia.org/wiki/Structural_insulated_panel",
"http://en.wikipedia.org/wiki/Prefabrication"
] | [
[],
[],
[],
[]
] | |
4ciufc | the difference between the brain and mind? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4ciufc/eli5_the_difference_between_the_brain_and_mind/ | {
"a_id": [
"d1il4je",
"d1ilhz1"
],
"score": [
3,
7
],
"text": [
"A brain is a lump of meat between your ears. The mind is the electricity and chemical reactions that the brain carries out (or the soul if you believe in it).\n\nYou would say that a dead body has a brain. You would not say ... | [] | [] | [
[],
[]
] | ||
2uoy8g | why do drinks explode when microwaved too long? | I placed my coffee in the microwave for two minutes this morning. I removed the cup and it wasn't bubbling. When I poured in a packet of sugar the coffee shot out of the cup like a fizzy drink sending scalding hot coffee everywhere.
Is this the work of a poltergeist or science?
| explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2uoy8g/eli5_why_do_drinks_explode_when_microwaved_too/ | {
"a_id": [
"coabzuk",
"coac23m"
],
"score": [
3,
2
],
"text": [
"That's super interesting - what I believe you saw is a process roughly equivalent to that of supercooled fluid.\n\nHave you seen the videos where people have bottles of water that they disturb and they suddenly freeze? Esse... | [] | [] | [
[],
[]
] | |
3fudyk | how are the winds on jupiter so much more powerful and chaotic than earth's winds despite the fact that jupiter is much further away from the sun than we are? | Kind of piggybacking off of another submission here, but this question started to bother me. The way I understand it, sunlight is a necessary component for wind. However, Jupiter has access to less sunlight than we do, yet its winds are many times more powerful than any storm on Earth. What gives? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3fudyk/eli5_how_are_the_winds_on_jupiter_so_much_more/ | {
"a_id": [
"cts1eul"
],
"score": [
2
],
"text": [
"Winds need a heat difference, but it doesn't have to come from the sun.\n Jupiter is a gas giant, and the winds are believed to be powered by the natural heat generated deep inside -- that is, the planet's own internal warmth. [Source.](_URL_0_)\... | [] | [] | [
[
"http://www.spacedaily.com/reports/Jupiters_Massive_Winds_Likely_Generated_From_Deep_Inside_Its_Interior.html"
]
] | |
24ufwv | how do ducks eat? | They don't appear to have teeth nor do their beaks look like they can create a seal and suction to suck/slurp. This all came about as I was watching [this](_URL_0_) video about ducklings feeding from cat nipple, wondering how it wasn't pinching the cat's nipple off, so bonus if you can explain that too! | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/24ufwv/eli5_how_do_ducks_eat/ | {
"a_id": [
"chas9p0",
"chb4mjb"
],
"score": [
3,
2
],
"text": [
"They have [teeth] (_URL_0_)",
"I believe they eat like this... \n\n_URL_0_"
]
} | [] | [
"https://www.youtube.com/watch?v=OfEw44cVJvY"
] | [
[
"http://www.google.com/search?q=duck+teeth&client=safari&hl=en&source=lnms&tbm=isch&sa=X&ei=r4hoU4SmEaK48QH-m4CQCA&ved=0CAgQ_AUoAQ&biw=768&bih=878"
],
[
"http://i.imgur.com/cBVPr.gif"
]
] | |
35s99r | i used to eat junkfood all the time and i would crave unhealthy things all the time. i've been eating healthier for well over a year now and i don't feel any craving for junkfood anymore. why did eating healthier cause my body to stop wanting junkfood? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/35s99r/eli5_i_used_to_eat_junkfood_all_the_time_and_i/ | {
"a_id": [
"cr7cdtc",
"cr7da3b",
"cr7dc95",
"cr7eain",
"cr7kt96"
],
"score": [
46,
13,
2,
2,
2
],
"text": [
"Because that's what food is: the last thing you ate that kept you alive. \"Get more of that,\" says the machine.",
"Cravings are your body's way to tel... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
biqeby | why does fecal matter break into pieces rather than coming out the size of your colon? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/biqeby/eli5_why_does_fecal_matter_break_into_pieces/ | {
"a_id": [
"em2dno0",
"em2f181",
"em2fs2n"
],
"score": [
6,
5,
4
],
"text": [
"Im no poop dr, but all the twists and turns in your inner workings, dehydrating the poop in your large intestine, and the action of your turd cutting sphincter all play a part",
"Due to the shape of... | [] | [] | [
[],
[],
[]
] | ||
4fv6bu | what is the point of signatures when they change constantly and are never compared? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4fv6bu/eli5_what_is_the_point_of_signatures_when_they/ | {
"a_id": [
"d2c8ffx",
"d2cbetg"
],
"score": [
2,
3
],
"text": [
"Firstly, they don't actually change as much as you think. It can often be shown if a signature is fraudulent, with enough evidence (of the person's usual signatures, even if they differ somewhat between them).\n\nSecondly, ... | [] | [] | [
[],
[]
] | ||
7pgx24 | whats the difference between the dearer paracetamol/ ibuprofen and the cheaper ones? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7pgx24/eli5_whats_the_difference_between_the_dearer/ | {
"a_id": [
"dsh4eum",
"dsh58et"
],
"score": [
22,
10
],
"text": [
"Nothing. Branding. By law, at least in the US (and I imagine the UK and most other countries), they must be the same. \n\nFor my fellow Muricans, “dearer” is “more expensive”, and paracetamol is acetaminophen. ",
"Very... | [] | [] | [
[],
[]
] | ||
2n4tcy | order of operations (math) | We all know BEDMAS, however, this post spurned a question in my mind:
_URL_0_
When writing out an equation to solve a real world problem, why do we sometimes place operations within brackets to override the order of operations? When it this appropriate? Is there a "rule of thumb" or similar to remember when to do thi... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2n4tcy/eli5_order_of_operations_math/ | {
"a_id": [
"cmabh0l",
"cmabxi6"
],
"score": [
2,
2
],
"text": [
"PEMDAS works left to right (\"rule of thumb\" i guess). You solve what's in parenthesis first then exponents then multiplication or division (which ever is farthest to the left you do first) then addition or subtraction (aga... | [] | [
"http://www.reddit.com/r/WTF/comments/2n3xwv/american_edumacashon/"
] | [
[],
[]
] |
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