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
31mzne
what is the nsa gaining out of collecting everyones data?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/31mzne/eli5_what_is_the_nsa_gaining_out_of_collecting/
{ "a_id": [ "cq315aa", "cq317md", "cq31olj", "cq376ey", "cq37wsq", "cq39wjo", "cq3cvoc" ], "score": [ 2, 17, 6, 3, 3, 3, 2 ], "text": [ "Intelligence. They sift through all that stuff trying to find national security threats and what not.", "Info...
[]
[]
[ [], [], [], [], [], [], [] ]
9d8xmn
what makes an isotope stable, and what determines which subatomic particle they lose?
I made a previous Eli5 about why isotopes exist and why they are radioactive, but recently I've become more curious and this wasn't really explained in their answer
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/9d8xmn/eli5_what_makes_an_isotope_stable_and_what/
{ "a_id": [ "e5g5kmk", "e5gcpn0" ], "score": [ 13, 6 ], "text": [ "The nucleus of an atom is held together by the **strong nuclear force**. Without this force, there would be no atoms as [all the protons in the nucleus repel each other.](_URL_0_) Now, the strong nuclear force is very stron...
[]
[]
[ [ "https://www.youtube.com/watch?v=jyaLZHiJJnE" ], [] ]
54u5ho
what is the difference between a military, a paramilitary, a militia, and a private army?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/54u5ho/eli5_what_is_the_difference_between_a_military_a/
{ "a_id": [ "d84zcxu", "d8502zc", "d852isr" ], "score": [ 23, 3, 6 ], "text": [ "* Military: In context to the question and in modern parlance, a military nationally funded and controlled fighting force, accountable and fully funded by its national government. The purpose of a stan...
[]
[]
[ [], [], [] ]
a9q5o0
curled ribbon
ELI5: why does ribbon curl when you pull it through scissors that are pressed against your finger?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/a9q5o0/eli5_curled_ribbon/
{ "a_id": [ "eclhg9e" ], "score": [ 4 ], "text": [ "Pulling against a hard edge slightly stretches and aligns the fibres on that side. With one side longer than the other it curls. Works for paper too." ] }
[]
[]
[ [] ]
djj75s
why it sometimes feel better to sit or lay down in a more "comfortable" position?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/djj75s/eli5_why_it_sometimes_feel_better_to_sit_or_lay/
{ "a_id": [ "f45kyvh" ], "score": [ 2 ], "text": [ "Depending on the muscles that have been working/over worked it allows them to rest. Also sometimes the body is just weird and likes certain kinds of pressure, for reason I dont quite understand lol" ] }
[]
[]
[ [] ]
70c540
how did salt and saturated fat become linked to high blood pressure and heart disease if they don't cause it?
[Salt](_URL_0_) [Saturated fat ](_URL_1_)
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/70c540/eli5_how_did_salt_and_saturated_fat_become_linked/
{ "a_id": [ "dn21mod" ], "score": [ 3 ], "text": [ "Dietary science is very difficult to do right. Experiments which can provide strong evidence for causality are expensive and suffer from bias because people are rarely willing or able to change their diet in any significant way over time.\n\nInst...
[]
[ "https://www.google.com/amp/www.medicalnewstoday.com/articles/amp/317099", "https://www.google.com/amp/s/amp.theguardian.com/society/2017/apr/25/saturated-fats-heart-attack-risk-low-fat-foods-cardiologists" ]
[ [] ]
c4syu2
if there are areas of space where there are only a few particles per entire cubic meters, what’s between the particles? is it really just nothing?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/c4syu2/eli5_if_there_are_areas_of_space_where_there_are/
{ "a_id": [ "ery5we6" ], "score": [ 4 ], "text": [ "With normal physics, yes nothing. Empty space. No particles. \n\n\nBut with quantum physics, \"nothing isn't nothing anymore\". Empty space has mass and empty space has energy. Wtf is it? We don't know...yet\n\n_URL_0_" ] }
[]
[]
[ [ "https://youtu.be/7ImvlS8PLIo" ] ]
oncrt
why are commercial toilets so powerful when you flush?
and the one's at home are not
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/oncrt/why_are_commercial_toilets_so_powerful_when_you/
{ "a_id": [ "c3ik3ns", "c3ik4z9", "c3ikun5", "c3iliev", "c3im28z", "c3imo5x" ], "score": [ 17, 46, 3, 2, 27, 2 ], "text": [ "Things people care about: Noise, and water usage.\n\nA business does not care about these as much as they do about flushing cleanly a...
[]
[]
[ [], [], [], [], [], [] ]
58ha2v
what does “score hidden” mean and do on reddit
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/58ha2v/eli5_what_does_score_hidden_mean_and_do_on_reddit/
{ "a_id": [ "d90dn58" ], "score": [ 2 ], "text": [ "From the Reddit admins:\n\n > The goal of this feature is to try to reduce the initial bandwagon/snowball voting, where if a comment gets a few initial downvotes it often continues going negative, or vice versa. By hiding the score for a while af...
[]
[]
[ [ "https://www.reddit.com/r/modnews/comments/1dd0xw/moderators_new_subreddit_feature_comment_scores/", "https://www.reddit.com/r/AskReddit/comments/1dfnku/why_are_comment_scores_hidden/" ] ]
7ljh1r
does getting sick with the flu once provide the same effect as the flu shot for that year?
Basically, if someone got sick with the flu once already this year and then got it again a month later. Does that first flu provide the same immunity effects against the second flu that a flu shot would have?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/7ljh1r/eli5_does_getting_sick_with_the_flu_once_provide/
{ "a_id": [ "drmo7lh", "drmp4z0", "drmvvfh", "drn1sm3", "drndf0s" ], "score": [ 13, 5, 43, 10, 4 ], "text": [ "Yes for that particular mutation of the flu but the flu mutates rapidly which is why you have to get flu shots every year and even then you can run into mu...
[]
[]
[ [], [], [], [], [] ]
9qkath
why can't certain autoimmune diseases be cured?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/9qkath/eli5_why_cant_certain_autoimmune_diseases_be_cured/
{ "a_id": [ "e89tsx4", "e89ut3k", "e89wi9h" ], "score": [ 5, 23, 2 ], "text": [ "I’m no research scientist or anything, only going off what I’ve read about MS. \n\nI have MS, and from what I understand, they know that it’s autoimmune - the body attacking itself - but can’t pinpoint...
[]
[]
[ [], [], [] ]
3cfo5a
what is going on with the reddit ceo and what did she do to" screw up"? why is every one wanting her to resign?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/3cfo5a/eli5_what_is_going_on_with_the_reddit_ceo_and/
{ "a_id": [ "csv21be" ], "score": [ 2 ], "text": [ "People on Reddit consider the site to be anything besides a business, for whatever reason. There's a ton of money to be made from users voting on what they like, packaged into neat little communities that follow demographic lines. It's a huge wor...
[]
[]
[ [] ]
4soo02
where did the plane debris end up after the planes hit the towers during 9/11
All the clips I've seen of 9/11 I can't ever see the plane debris
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/4soo02/eli5where_did_the_plane_debris_end_up_after_the/
{ "a_id": [ "d5aww5w", "d5awz3v", "d5ax4o1", "d5axhig", "d5axyp2" ], "score": [ 10, 3, 2, 3, 11 ], "text": [ "As a slightly irreverent statement: everywhere.\n\nAirplanes are lightweight tubes made of structures that are meant to be sturdy against the typical forces...
[]
[]
[ [], [], [], [], [ "https://www.youtube.com/watch?v=25vlt7swhCM" ] ]
15ahfo
why it is forbidden to take photos in shops?
I see everything, so why I can't take a picture
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/15ahfo/why_it_is_forbidden_to_take_photos_in_shops/
{ "a_id": [ "c7krdq6", "c7ksav4" ], "score": [ 4, 2 ], "text": [ "It is for security reasons. A guy taking pictures might be \"casing the joint\". It is a term used to describe someone studying an area they intend to rob. Taking pictures could allow a thief to figure out the layout of t...
[]
[]
[ [], [] ]
1y7agl
why do animals/pets attempt to stay awake when they're nodding off and clearly tired?
Oftentimes, I see pets that start to nod off, and then they jerk awake and attempt to stay awake. Why don't they just go to sleep? It's not like they have school/work.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1y7agl/eli5_why_do_animalspets_attempt_to_stay_awake/
{ "a_id": [ "cfi0cxf" ], "score": [ 4 ], "text": [ "They don't want to miss what is going on. They are interested in the socializing." ] }
[]
[]
[ [] ]
elr8fd
what are the benefits of recycling glass over just using more sand?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/elr8fd/eli5_what_are_the_benefits_of_recycling_glass/
{ "a_id": [ "fdjoo00", "fdjou4c", "fdjp571" ], "score": [ 2, 9, 2 ], "text": [ " There are much more raw materials going into the manufacturing of glass than just sand. Hope this helps.\n\n[_URL_0_](_URL_0_)", "It takes way less energy to melt glass for reuse than to start with...
[]
[]
[ [ "https://www.glassrecycles.org/why-recycle-glass" ], [], [] ]
f001h2
how does a network card make a port (for example port 80 for http)?
I don't understand how a network card or even the software on a network card can make a virtual port and then make sure that traffic is processed alongside every other port. What are these ports actually and how do they work. literally not the same repeated stuff I find on every website when I search "what is a port" i...
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/f001h2/eli5_how_does_a_network_card_make_a_port_for/
{ "a_id": [ "fgqn8k3" ], "score": [ 6 ], "text": [ "Ports are a part of the TCP/IP protocol, and as such are part of the wrapper around a packet of data.\n\nWhen a connection is open through a network interface, the client and host both assign a port for communication.\n\nAn automated server will ...
[]
[]
[ [] ]
59i27j
how is 911 the phone number to every police station?
How is it that 911 is the universal phone number for the police but it is also the number to the one in your area?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/59i27j/eli5_how_is_911_the_phone_number_to_every_police/
{ "a_id": [ "d98ko2w", "d98kotm", "d98ku6v", "d98kw3h", "d98l6ab", "d98lvhb" ], "score": [ 3, 7, 2, 2, 2, 2 ], "text": [ "It's 999 over here or 112 on mobile\n\nIt goes to a central switch which passes it to the local police ", "It is not the number to t...
[]
[]
[ [], [], [], [], [], [] ]
21uo5u
why do i get really tired and sleepy after an argument or when i'm sad?
Whenever I get really sad, maybe even cry, or have an argument with someone, I always feel so tired I could go to sleep right after. Why?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/21uo5u/eli5_why_do_i_get_really_tired_and_sleepy_after/
{ "a_id": [ "cggq6b9" ], "score": [ 2 ], "text": [ "Getting sleepy is a defensive mechanism. If there's too much to deal with you can end up being sleepy. You are subconsciously trying to avoid what's troubling you." ] }
[]
[]
[ [] ]
5ln62q
what exactly is a diplomat and why do we have them?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5ln62q/eli5_what_exactly_is_a_diplomat_and_why_do_we/
{ "a_id": [ "dbwwyrc", "dbwxglq" ], "score": [ 7, 3 ], "text": [ "Trade agreements, negotiation of travel between boarders, military cooperation, cultural study, national security advisory....", "Diplomats are points of contact for official communication between countries, and are of p...
[]
[]
[ [], [] ]
ud3bh
why my left arm/hand go completely numb/shoot with pain for 15 minutes when i'm sleeping, so much that the pain wakes me up.
My left hand's fingers randomly go numb throughout the day, as well.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/ud3bh/eli5_why_my_left_armhand_go_completely_numbshoot/
{ "a_id": [ "c4uccq9", "c4uctgu" ], "score": [ 3, 3 ], "text": [ "I'm not a doctor, but it is possible that you are cutting off circulation. Are you sleeping on your arm? Is it bent awkwardly? Maybe you do something in your sleep you aren't aware of?\n\n If this subreddit doesn't give you ...
[]
[]
[ [], [ "http://en.wikipedia.org/wiki/Ulnar_nerve" ] ]
178z78
why do some movies list the cast in order of appearance?
Just finished Get Him to the Greek and wondered why some movie credits are set upthis way.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/178z78/eli5_why_do_some_movies_list_the_cast_in_order_of/
{ "a_id": [ "c83awrl", "c83bu8k", "c83effa" ], "score": [ 5, 2, 6 ], "text": [ "I always think of those that give credits in the order of appearance as trying to recognize that the movie is a complete work due to the efforts of all people involved, regardless of how large or small ...
[]
[]
[ [], [], [ "http://i.imgur.com/FdaexBP.jpg" ] ]
6drnyg
how do forensic experts isolate human dnas from so many non-human dnas coming from microbes present on crime scene?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/6drnyg/eli5how_do_forensic_experts_isolate_human_dnas/
{ "a_id": [ "di4vk1l" ], "score": [ 3 ], "text": [ "DNA from bacteria is shockingly different from human DNA. Of course, the actual DNA material is very similar, but the sequences are very different.\n\nSome sequences of DNA are ONLY found in bacteria. They may be used for things like transcriptio...
[]
[]
[ [] ]
97gumf
what exactly does the neutral wire do in an ac electrical circuit?
I’m almost embarrassed because I am an electrician. However, you don’t need to know the science to it to know it goes on the silver screw. But my curiosity always gets to me and I can’t seem to understand the role the neutral wire plays in the circuit.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/97gumf/eli5_what_exactly_does_the_neutral_wire_do_in_an/
{ "a_id": [ "e483y8q", "e4857oo", "e48cfkj", "e48sabu" ], "score": [ 2, 7, 4, 2 ], "text": [ "In the US, electricity is distributed on two wires: One always has the opposite voltage of the other. So if one wire has -110V at the moment, the other has +110. Each one of these ...
[]
[]
[ [], [], [], [] ]
380kja
what holds people back from abusing warranties that replace devices if lost or stolen?
It seems like it would be excruciatingly easy to buy a warranty and lose a device over and over while reaping the rewards and getting it back.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/380kja/eli5what_holds_people_back_from_abusing/
{ "a_id": [ "crranqm" ], "score": [ 3 ], "text": [ "Warranty exchanges are tracked. \n\nWhen you trade in on a warranty in most cases, they ask (at minimum) for the credit card or receipt that you bought it under. If you don't have the former, the latter is snagged via barcode scanner and you fill...
[]
[]
[ [] ]
2r36e4
how to people die in "stampedes" (like black friday or the new year's stampede of people in shanghai)?
What is the cause of death and how does it actually happen?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2r36e4/eli5_how_to_people_die_in_stampedes_like_black/
{ "a_id": [ "cnc0y14", "cnc11cl", "cnc1oyc" ], "score": [ 2, 3, 2 ], "text": [ "If one falls over in a large crowd for example when the doors open on blackfriday people will literally be stepped on to death or crushed against walls. When they get in the situation its already to lat...
[]
[]
[ [], [], [] ]
3ivvf4
why does the casting director appear in the opening credits of a movie? are they viewed as just as important as the actual actors and director?
[deleted]
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/3ivvf4/eli5why_does_the_casting_director_appear_in_the/
{ "a_id": [ "cuk4aqa" ], "score": [ 43 ], "text": [ "For a long time they weren't credited at all and a lot of directors didn't feel they were deserving of a \"directing\" credit. When film was still in its studio dominated phase, casting came down mostly to the producers. The studios had contract...
[]
[]
[ [] ]
4i007c
why do our voices quiver when we're nervous?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/4i007c/eli5_why_do_our_voices_quiver_when_were_nervous/
{ "a_id": [ "d2ttvof", "d2tuptu", "d2txgaf", "d2tzxhk", "d2u120o", "d2u1qn7" ], "score": [ 256, 3337, 25, 8, 14, 388 ], "text": [ "I didn't realize this was something I wanted to know the answer to. A big part would be activation of the sympathetic nervous s...
[]
[]
[ [], [], [], [], [], [] ]
4akvdq
why do things hurt more when they're unexpected?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/4akvdq/eli5_why_do_things_hurt_more_when_theyre/
{ "a_id": [ "d117z5g" ], "score": [ 2 ], "text": [ "Another redditor feels just the opposite is true -- _URL_0_." ] }
[]
[]
[ [ "https://www.reddit.com/r/explainlikeimfive/comments/3x4er3/eli5_why_does_it_seem_like_physical_pain_is_more/" ] ]
ce78ml
what exactly happens when you experience a heart palpitation, the brief pounding or fluttering in your chest?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/ce78ml/eli5_what_exactly_happens_when_you_experience_a/
{ "a_id": [ "eu0ms78", "eu0un6u", "eu1gbd9", "eu1r4ct", "ez352d5" ], "score": [ 5, 2, 3, 2, 6 ], "text": [ "Usually this is because your heart is simply put, just beating faster because you were doing something that required your heart to increase in speed to keep t...
[]
[]
[ [], [], [ "https://imgur.com/a/r6tzxv6/" ], [], [] ]
1jbloe
if pluto orbits in an ellipsis, why doesn't it collide with neptune?
I have been researching the planets and found that Pluto has an elliptical orbit tilted over 17° from the ecliptic but also found a diagram where Pluto's and Neptune's orbits cross, why hasn't this happened? And will it ever happen?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1jbloe/eli5_if_pluto_orbits_in_an_ellipsis_why_doesnt_it/
{ "a_id": [ "cbd144s", "cbd1e34" ], "score": [ 3, 6 ], "text": [ "TYL: ellipsis != ellipse.", "It will never happen. Neptune and Pluto actually orbit in a nice ratio: three Neptune years = two Pluto years. That means that while their orbits are complicated, they're synchronized. (This ...
[]
[]
[ [], [] ]
1mb4ii
how do people explicitly post pictures doing drugs and not get prosecuted?
In the United States, at least.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1mb4ii/eli5_how_do_people_explicitly_post_pictures_doing/
{ "a_id": [ "cc7i6w8", "cc7kds3" ], "score": [ 3, 2 ], "text": [ "How do you prove in court that the white powder was cocaine? Answer: you generally can't. ", "They do -- if the police catch them. But usually the police aren't flipping through random people's Facebook albums in order t...
[]
[]
[ [], [ "http://www.huffingtonpost.com/2010/08/16/arrested-over-facebook-po_n_683160.html#s127052title=Mother_Arrested_Over" ] ]
51rhuv
why do veterans have to use a va clinic instead of regular doctors if that is quicker?
After watching the last 10 min of the veterans presidential candidate townhall I was left curious as to WHY can't you just use a regular doctor through your ins. Or is it hard to get...sorry if I sound stupid
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/51rhuv/eli5_why_do_veterans_have_to_use_a_va_clinic/
{ "a_id": [ "d7e7s2z", "d7efov1" ], "score": [ 7, 2 ], "text": [ "VA doctors are much cheaper for the government. Their salaries are lower, partly because they are doing it as a public service and partly because government doctors are not subject to malpractice (!). They are also paid a se...
[]
[]
[ [], [] ]
15r9l2
what does the fiscal cliff/this deal that has been reached mean for nasa?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/15r9l2/eli5_what_does_the_fiscal_cliffthis_deal_that_has/
{ "a_id": [ "c7p2is7" ], "score": [ 2 ], "text": [ "NASA would lose $1.5 billion in funding in 2013 if nothing is done." ] }
[]
[]
[ [] ]
2p3z3q
when does a doctor stop attempts to revive a patient and start harvesting organs?
I've read a lot of stories about how people were saved by other people's organs after doctors decided there was "nothing else they could do" so they took the organs. However, I've also read lot of stores about doctors telling the family there was "nothing else they could do" only to have the patient make a sudden mira...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2p3z3q/eli5_when_does_a_doctor_stop_attempts_to_revive_a/
{ "a_id": [ "cmt4zba", "cmt51wn", "cmt53ng", "cmt5zpv" ], "score": [ 3, 2, 2, 2 ], "text": [ "Death is hard to really define medically - at least in a way that lets you clearly define whether someone right after a heart attack is still alive. Obviously you're alive right no...
[]
[]
[ [], [], [], [ "http://en.wikipedia.org/wiki/Brain_death#Medical_criteria" ] ]
3637kd
why snipers don't use silencers? also, how did they spot enemy snipers?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/3637kd/eli5why_snipers_dont_use_silencers_also_how_did/
{ "a_id": [ "craa1cg", "craa37o", "craa3f2", "crab31t", "crabe1h" ], "score": [ 10, 15, 6, 4, 2 ], "text": [ "Because silencers muffle and slow the bullet, which means it will be significantly less accurate over long range.", "Snipers don't use silencers because...
[]
[]
[ [], [], [], [], [] ]
2d8kcb
what is the internet made out of?
This morning I found myself wondering what the internet is made out of. I don't think it has a mass, and everything on it seems to be made of nothing, but since it exists it must be made of something. The print on my screen is projected through light waves, but what caused the light waves to form? Is the internet made ...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2d8kcb/eli5_what_is_the_internet_made_out_of/
{ "a_id": [ "cjn3myj", "cjn3z0p" ], "score": [ 3, 2 ], "text": [ "The internet is made of computers just like yours connected with each other by cables/wifi/whatever. They talk with each other using electricity.", "The internet is lots and lots of computers and servers linked together....
[]
[]
[ [], [ "http://www.datacenterknowledge.com/the-facebook-data-center-faq/" ] ]
a1cqjg
how do two oxygen atoms bond despite both having six valence electrons?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/a1cqjg/eli5_how_do_two_oxygen_atoms_bond_despite_both/
{ "a_id": [ "eaop9er" ], "score": [ 4 ], "text": [ "They effectively \"share\" 2 electrons so that they both have 8. It's called a covalent bond. \n\n & #x200B;\n\nThink of it like they have 4 electrons each and another 4 electrons in common (2 from one, 2 from the other)." ] }
[]
[]
[ [] ]
5ys6dn
where did cows come from?
I can't imagine cows in the wild as they have been domesticated for centuries already. What were cows before they were domesticated?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5ys6dn/eli5_where_did_cows_come_from/
{ "a_id": [ "desi1gg", "desi1q0", "desiok0" ], "score": [ 27, 15, 164 ], "text": [ "The species from which cows were domesticated was the Aurochs, but those have since gone extinct.\n\n_URL_0_", "As far as I know cows are descended from the now extinct auroch. Of course we bred...
[]
[]
[ [ "https://en.wikipedia.org/wiki/Aurochs" ], [], [] ]
1hbtnr
what is the purpose of the jet of water that shoots up from the back of the jet ski.
It seems like there would be a better way to aim it.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1hbtnr/eli5_what_is_the_purpose_of_the_jet_of_water_that/
{ "a_id": [ "casx4sb" ], "score": [ 4 ], "text": [ "It's called a tell tale and it shows that the cooling system pump is functioning correctly. " ] }
[]
[]
[ [] ]
5flxys
why do people have such a hard time holding still enough to balance on one foot or on a narrow surface?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5flxys/eli5_why_do_people_have_such_a_hard_time_holding/
{ "a_id": [ "dalaqqv" ], "score": [ 4 ], "text": [ "Humans have a very high center of gravity which makes tipping over much easier. We also don't have tails, one of the most important features of animals who can maintain their balance (like cats). " ] }
[]
[]
[ [] ]
yhvym
vowels in arabic (msa).
Short vowels, long vowels, double vowels, extra characters at the end of words, the alif that splits into two pieces ... I'm lost, please help! Also, how does the language work once vowels sounds aren't marked?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/yhvym/eli5_vowels_in_arabic_msa/
{ "a_id": [ "c5x645c" ], "score": [ 2 ], "text": [ "Arabic only has vowel signs for the short vowels a, u and i. It has also a sign for the absence of a vowel and the doubling of consonant. \nThe short vowel signs can also be combined with other letters to mark long vowels and [diphthongs](_URL_1_...
[]
[]
[ [ "http://en.wikipedia.org/wiki/Arabic_nouns_and_adjectives#Case", "http://en.wikipedia.org/wiki/Arabic_alphabet#Diphthongs", "http://en.wikipedia.org/wiki/Arabic_alphabet#Ligatures_2" ] ]
4cgzk0
how is the earths core lasting so long and when will it die?
[deleted]
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/4cgzk0/eli5_how_is_the_earths_core_lasting_so_long_and/
{ "a_id": [ "d1i4mr8", "d1i7m2b" ], "score": [ 2, 2 ], "text": [ "Ever notice how long coffee stays hot inside an insulated cup? Now imagine super, crazy hot coffee surrounded by many miles of insulation\n\nAlso, the coffee has radioactive stuff in it that is decaying, producing even more ...
[]
[]
[ [], [ "https://en.wikipedia.org/wiki/Future_of_the_Earth#Solidification_of_the_outer_core", "https://en.wikipedia.org/wiki/Earth%27s_internal_heat_budget" ] ]
2hsh4h
why did the price of ram skyrocket?
Two years ago I bought 8 gigs of RAM for $30, 8 gigs now costs 60+, what happened? (Preface, I thought for sure someone would have asked this before, but I couldn't find it searching for it)
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2hsh4h/eli5_why_did_the_price_of_ram_skyrocket/
{ "a_id": [ "ckvkeoj", "ckvlufg", "ckvn5di", "ckvu78k" ], "score": [ 27, 5, 2, 2 ], "text": [ "Two things: A rise in demand and a sudden drop in supply.\n\nIn late 2013 a Chinese factory responsible for 25% of the market burned, and while they have since rebuild and are bac...
[]
[]
[ [], [], [], [] ]
6ba5h4
if drugs stay in the body and are still detectable in the body weeks after use, then why do the effects of the drug only last hours?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/6ba5h4/eli5_if_drugs_stay_in_the_body_and_are_still/
{ "a_id": [ "dhkxk88", "dhkxm0n", "dhkxyfz", "dhlejsn" ], "score": [ 7, 8, 13, 3 ], "text": [ "\"Drugs\" don't stay in the body for weeks. The drugs are metabolized into other things that don't impact the body the same way, and *those* can stick around in the body for quite...
[]
[]
[ [], [], [], [ "https://en.wikipedia.org/wiki/Phosphatidylethanol" ] ]
2z2veu
how do you get promoted in the military? is it difficult?
Especially im peacetime when there is no chance for heroics. Just curious.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2z2veu/eli5_how_do_you_get_promoted_in_the_military_is/
{ "a_id": [ "cpf6jt7", "cpf73qp", "cpf7duy", "cpf8reg", "cpf9ei4" ], "score": [ 3, 11, 3, 2, 2 ], "text": [ "It depends on your job. Its a point based system for most promotions, so the more stuff you do, the better off you are. ", "It depends on which branch, ...
[]
[]
[ [], [], [], [], [] ]
6vcd8t
how do we know for certain that it is 2017
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/6vcd8t/eli5_how_do_we_know_for_certain_that_it_is_2017/
{ "a_id": [ "dlz4got", "dlz4gtu" ], "score": [ 2, 2 ], "text": [ "2017 is just a name we decided for this year. There isn't anything in the universe that tells us it is 2017, it is arbitrary. \n\nBut the name of the year doesn't matter, as long as people agree on it.", "Because we def...
[]
[]
[ [], [] ]
1kfzqy
what an octave is, how to read sheet music, why notes repeat "a-b-c-d-e-f-g-a...," how a flat note differs from a regular note, a sharp, a minor and a major note
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1kfzqy/eli5_what_an_octave_is_how_to_read_sheet_music/
{ "a_id": [ "cbojkrm", "cbojp7c", "cbojrt7", "cbonj2x", "cbonzth" ], "score": [ 2, 10, 3, 2, 2 ], "text": [ "I can't help with most of your question, but in choir in middle school I learned this: An easy way of understanding octaves is by doing the following: Hum a ...
[]
[]
[ [], [ "www.musictheory.net" ], [], [ "http://i.imgur.com/NA8BJY6.png", "http://i.imgur.com/85MndUk.png", "http://i.imgur.com/tomMarB.png", "http://i.imgur.com/IL24Rgw.png", "http://i.imgur.com/o6cyEh9.png" ], [ "http://donrathjr.com/wp-content/uploads/2010/09/Time-Signatures-...
1xzeq1
why is voice-activated technology not as widespread as it could be?
Seems like we spend lots of time in our lives still using keyboards, remote controls, knobs, dials, etc. In my vision of the future, we would cut out wasted time spent typing/etc. and have quicker, more direct means of searching, word processing, etc. Is there a primary reason why, for instance, everyone is not using S...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1xzeq1/eli5_why_is_voiceactivated_technology_not_as/
{ "a_id": [ "cffz7kf", "cfg0g9i", "cfg0wcq" ], "score": [ 5, 3, 3 ], "text": [ "Accents.\n\nI'm Scottish, Glaswegian specifically and I have never encountered any voice recognition that works with my natural accent. I don't even have a particularly strong accent (in comparison to m...
[]
[]
[ [], [], [] ]
8ip2y5
what makes a mass poll reputable?
If I decide that I want to make a poll, interviewing 7.000 people for instance, what makes my poll worth a damn in the academia? Does it even work like that? What ordinary people have to do to make a poll that has weight so people who study social sciences can reference it?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/8ip2y5/eli5_what_makes_a_mass_poll_reputable/
{ "a_id": [ "dytm6zl" ], "score": [ 3 ], "text": [ "It's a question of which people you poll. \n\nThere is a population, all the people in the country, and there is statistic that measures their distribution on a question, like who to vote for the leader of government. One way to measure this st...
[]
[]
[ [] ]
3ax2x2
what is an eating disorder scientifically? what happens in the brain?
I have anorexia with BED subtype, and I've always wanted to know what's going on neurologically that causes the disorder.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/3ax2x2/eli5_what_is_an_eating_disorder_scientifically/
{ "a_id": [ "csgtqak" ], "score": [ 3 ], "text": [ "BED is likely to be a dopamine addiction problem (along the ranks, of heroin, coffee and cell phones). When you eat, you get a small hit of dopamine, this makes eating feel good which is important for survival. Certain foods (realistically, this ...
[]
[]
[ [] ]
1oph9d
who is ann counter and why don't we like her?
Sorry, I've tried doing a google search but didn't really understand it as I didn't have enough time to do one thoroughly, also, I'm British and a student and being a bit lazy, so if you could direct it to someone like me. Thanks gusy!
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1oph9d/eli5_who_is_ann_counter_and_why_dont_we_like_her/
{ "a_id": [ "ccu8wrv", "ccu8wu5" ], "score": [ 2, 2 ], "text": [ "She's a Republican who works for Fox News and says a lot of things that sound silly to people on the left of the political spectrum. For example, I think she said women shouldn't be allowed to vote, but that was a while ago....
[]
[]
[ [], [] ]
22fsqt
why is imgur so much faster is loading gifs than minus is?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/22fsqt/eli5why_is_imgur_so_much_faster_is_loading_gifs/
{ "a_id": [ "cgmdb3y", "cgmdltg", "cgmix5y" ], "score": [ 7, 3, 2 ], "text": [ "I don't know what Minus is, so I'm assuming it's a significantly smaller image host.\n\nThe infrastructure behind imgur is likely significantly more advanced, with more powerful hardware. As a result, i...
[]
[]
[ [], [], [] ]
3muf1y
why do sidewalks need cracks in order to not break during changing seasons, but street pavement does not?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/3muf1y/eli5_why_do_sidewalks_need_cracks_in_order_to_not/
{ "a_id": [ "cvi6cv0", "cvi6eif" ], "score": [ 6, 4 ], "text": [ "Asphalt concrete is a lot more stretchy than regular concrete. (In fact, asphalt, the black material that binds the gravel of a road together, is a liquid that simply flows *very slowly*. _URL_0_) This allows it to expand an...
[]
[]
[ [ "https://en.wikipedia.org/wiki/Pitch_drop_experiment" ], [] ]
o6w4e
hernias
I have a (male, 35-year-old) friend who lives in a small island town who told me that he developed a lump on his abdomen after having a bad cough. I need to know if I should try to convince him to travel to the nearest city to have it checked out. The considerations are that the trip would be expensive and time-consumi...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/o6w4e/eli5_hernias/
{ "a_id": [ "c3ev3nz" ], "score": [ 15 ], "text": [ "(the post by johninbigd is not entirely correct)\n\nA hernia indeed often can appear as a \"lump on the abdomen\" because there is a weak spot in the wall of the body. Think of it like putting a bunch of marbles in a jar; since the jar has stron...
[]
[]
[ [ "http://www.empowher.com/files/ebsco/images/si55551185.jpg" ] ]
1oli5p
if you pay your wife to have sex with you, is it considered prostitution and therefore illegal?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1oli5p/if_you_pay_your_wife_to_have_sex_with_you_is_it/
{ "a_id": [ "cct3v32", "cct4a48" ], "score": [ 2, 7 ], "text": [ "When you're married your assets are hers and hers are yours. So in the eyes of the law you'd be paying yourself.", "Yes, it would *technically* be illegal. If your wife or husband would not have sex with you unless you ...
[]
[]
[ [], [] ]
9gmdu1
why are the most ‘hard to get up’ times around 6-8am? for instance if i went to sleep at 7pm and woke up at 3am i wouldn’t be tired. but no matter what time i go to sleep, if i wake up between these hours, it’s so hard to actually get up and wake up?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/9gmdu1/eli5_why_are_the_most_hard_to_get_up_times_around/
{ "a_id": [ "e65633n", "e656bd6" ], "score": [ 4, 3 ], "text": [ "Because if you get up any earlier your body produces things like adrenaline, and if you get up later it’s so bright that your body quickly wakes up. \n\n6-8am is the valley of death in the middle :(", "IMO it's different...
[]
[]
[ [], [] ]
17ae9x
why classical music still sounds good today (after four hundred years), but lots of music from even ten years ago sounds lame?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/17ae9x/eli5_why_classical_music_still_sounds_good_today/
{ "a_id": [ "c83omrv" ], "score": [ 7 ], "text": [ "When you hear classical music, you basically only hear the classical music that was good. In the era of digitally recorded media, pretty much anyone with a microphone can record anything, and store it and transmit it anywhere for free, so it's e...
[]
[]
[ [] ]
3db2v0
how do programmers program colors?
More Specific: How did the FIRST Programmers get color on the screen?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/3db2v0/eli5_how_do_programmers_program_colors/
{ "a_id": [ "ct3ge6h", "ct3h0tu", "ct3jz8f" ], "score": [ 5, 2, 2 ], "text": [ "They use 3 numbers: how much red, how much green, and how much blue. These are blended to create any color the computer can show.", "On the lowest level, an image is just bytes in memory. Depending ...
[]
[]
[ [], [], [ "https://www.youtube.com/watch?v=uCRijF7lxzI" ] ]
8r0rk0
why are children being separated from their parents at the us-mexico border?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/8r0rk0/eli5_why_are_children_being_separated_from_their/
{ "a_id": [ "e0nj960", "e0njmwj", "e0nkb1v", "e0nr5cq", "e0nrqoz", "e0nsl3o" ], "score": [ 6, 56, 1057, 2, 4, 7 ], "text": [ "It is not \"at the border\". That happens after parent crosses the border illegally, committing an illegal act. We put criminals in ...
[]
[]
[ [], [], [ "http://alwaght.com/upload/logo/2018318_11/2018318173012116.jpg" ], [], [], [ "https://www.vox.com/policy-and-politics/2018/5/8/17327512/sessions-illegal-immigration-border-asylum-families" ] ]
c79hbo
why does the surface of water look mirror-like from the underside at certain angles?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/c79hbo/eli5_why_does_the_surface_of_water_look/
{ "a_id": [ "esdxr6d", "esdzwnt" ], "score": [ 3, 5 ], "text": [ "One I can answer! \n\nEssentially, light will pass through (refract) untill a certain angle until it bends into itself (reflects) this angle is known as the critical angle and\n changed depending on temperature, depth, sub...
[]
[]
[ [], [] ]
5o9cgu
why does it hurt so much worse when something is dropped on the top of your foot?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5o9cgu/eli5why_does_it_hurt_so_much_worse_when_something/
{ "a_id": [ "dchmiub" ], "score": [ 2 ], "text": [ "There is very little padding on the top of your feet, and the bottom of your feet have relatively little but very tough padding. Most of your foot is bone. So, since there's little soft, cushiony stuff to absorb the impact on either side of your ...
[]
[]
[ [] ]
3khcx0
why do men find hairy women unattractive?
[deleted]
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/3khcx0/eli5why_do_men_find_hairy_women_unattractive/
{ "a_id": [ "cuxeih4" ], "score": [ 2 ], "text": [ "I can't tell you why exactly, but I can tell you not to assume that it's becuase of evolutionary factors. Man isn't struggling to survive anymore, so attractiveness can be more of a social construct than a survival based concept" ] }
[]
[]
[ [] ]
2n2mj0
why do your ears sometimes hurt after wearing headphones for a while?
After wearing headphones for a while on the computer listening to music or playing games, my ears feel like they hurt when i take them off. why is this?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2n2mj0/eli5why_do_your_ears_sometimes_hurt_after_wearing/
{ "a_id": [ "cm9r10e", "cm9r3dr" ], "score": [ 4, 2 ], "text": [ "Do you mean ears as in exterior or ear drum and canal. If the exterior of your ear hurts it's likely you have either an on ear or poorly fitted over ear headphone with to much clamping force. Try stretching the headband by p...
[]
[]
[ [], [] ]
6s2wnx
how do our passwords stay protected even though many websites/companies know our login information?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/6s2wnx/eli5_how_do_our_passwords_stay_protected_even/
{ "a_id": [ "dl9n8s9", "dl9shwp" ], "score": [ 13, 5 ], "text": [ "Most sites don't store your password, they store a hash of your password\n\nA hash is specifically designed to be a one way function so it's easy to take the password and generate the hash and check it against the database,...
[]
[]
[ [], [] ]
7b1wag
how are tree representations used as a data structure?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/7b1wag/eli5_how_are_tree_representations_used_as_a_data/
{ "a_id": [ "dpeoetm", "dpeuwj0" ], "score": [ 3, 2 ], "text": [ "Tree structures are all over the dang place.\n\nYou're looking at one right now! The elements on any web page are stored in your browser's memory in a tree structure called the Document Object Model (DOM).\n\nThe filesystem ...
[]
[]
[ [], [] ]
fkwd2s
how do infectious diseases/disease spread have such a significant impact on the economy?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/fkwd2s/eli5_how_do_infectious_diseasesdisease_spread/
{ "a_id": [ "fkv6ijt", "fkv6otw", "fkv78s9", "fkv96qg" ], "score": [ 3, 3, 2, 2 ], "text": [ "The disease itself doesn't. Its fear of the disease that harms the economy by causing people to stay home rather than going to work.\n\n\"The economy\" is the sum of all of the wo...
[]
[]
[ [], [], [], [] ]
2qkz98
eli:5 can you burn off plaque in your arteries like you burn fat?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2qkz98/eli5_can_you_burn_off_plaque_in_your_arteries/
{ "a_id": [ "cn71afl", "cn72554" ], "score": [ 6, 2 ], "text": [ "I don't think it quite works like that. If I'm not mistaken, having a higher ratio of HDL to LDL is the key to reversing atherosclerosis.\n\nEdit: LDL/low density lipoprotein (commonly known as the bad cholesterol) deposits ...
[]
[]
[ [], [] ]
3d2n2s
what is the significance of the new pictures of pluto and why are scientists so excited?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/3d2n2s/eli5_what_is_the_significance_of_the_new_pictures/
{ "a_id": [ "ct1855n", "ct1aoyx", "ct1b8n7", "ct1bd2k", "ct1fgkw", "ct1ih9c" ], "score": [ 54, 12, 6, 11, 6, 3 ], "text": [ "We have never gotten any good pictures of pluto. It was discovered 85 years ago and the best we ever saw of it was a few fuzzy pixel...
[]
[]
[ [], [], [], [], [], [] ]
cuv1b1
. is there really a difference in gas at gas stations?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/cuv1b1/eli5_is_there_really_a_difference_in_gas_at_gas/
{ "a_id": [ "exzgpec", "exzlch7", "exzx2l2", "exzy51w" ], "score": [ 9, 2, 2, 2 ], "text": [ "The gas as delivered to the gas stations, not so much. They all pretty much buy the bulk gasoline from the same distributors. Any truckload of 87 octane is pretty much the same as ...
[]
[]
[ [], [], [], [] ]
2shbg9
what's the purpose of the national guard in the us if we now have a standing army and army reserves?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2shbg9/eli5_whats_the_purpose_of_the_national_guard_in/
{ "a_id": [ "cnpgs4e", "cnph1r4", "cnpj8yy" ], "score": [ 8, 2, 3 ], "text": [ "The National Guard is a military force that can be deployed by EITHER the Federal or State governments. The Reserves and Regular Forces can only be deployed by the Federal government.\n\nAdditionally mo...
[]
[]
[ [ "https://en.wikipedia.org/wiki/1999_Seattle_WTO_protests", "https://en.wikipedia.org/wiki/2014_Oso_mudslide" ], [], [ "http://www.findingdulcinea.com/news/on-this-day/September-October-08/On-this-Day--Arkansas-National-Guard-Bars--Little-Rock-Nine--from-School.html" ] ]
2o0pn5
how does one simply hack xbox live or psn?
With the recent activity of Lizard Squad and Xbox live, I became interested in just how someone or a group of someones could hack into Xbox live. I did a little bit of googling and read that being friends with someone on xbox live or psn can give them access to information about your system necessary to hack it, but I ...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2o0pn5/eli5_how_does_one_simply_hack_xbox_live_or_psn/
{ "a_id": [ "cmimx4l", "cmimzqp" ], "score": [ 3, 9 ], "text": [ "Lizard Squad didn't \"Hack\" Xbox Live. They Simply DDoSed them . Honestly it's not very difficult. A bunch of kids with different computers could do it. If they hacked Xbox Live I'm pretty sure Microsoft would do something...
[]
[]
[ [], [] ]
cficbe
why does drinking water too quickly cause pain?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/cficbe/eli5_why_does_drinking_water_too_quickly_cause/
{ "a_id": [ "eua56j3", "euabkqa" ], "score": [ 6, 3 ], "text": [ "Water isn't compressible. Too much water down your throat at one time causes your throat to stretch out beyond what is comfortable and causes pain.", "Could you be swallowing air?\n\nWhen I don't drink \"properly\" I som...
[]
[]
[ [], [] ]
5jidth
why is it often very difficult for people to keep a secret? what is psychologically going on?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5jidth/eli5_why_is_it_often_very_difficult_for_people_to/
{ "a_id": [ "dbggdok", "dbggpfu", "dbgph6o" ], "score": [ 15, 17, 4 ], "text": [ "Status..\n\n\"I know something you don't know\" increases your social status compared to the one you're telling.\n\nThe way to prove that you're not full of BS, is to tell them what you know.\n\nAt le...
[]
[]
[ [], [], [] ]
756nle
why dont cuttings from plants die once removed from the rest of the plant which can then be grown into a new plant ie; cloning?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/756nle/eli5_why_dont_cuttings_from_plants_die_once/
{ "a_id": [ "do42thl" ], "score": [ 3 ], "text": [ "Basically, it's because of the difference between plants and animals.\n\nFor a lifeform to survive, it requires energy. For animals (like us), that energy is created through nutrients (ie food) and oxygen. Both are transported throughout our body...
[]
[]
[ [] ]
22fc63
how does buying and selling shares create value?
I get how selling something for more than you bought it for makes money, but i wonder how we can have an industry based on no actul value beeing made.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/22fc63/eli5_how_does_buying_and_selling_shares_create/
{ "a_id": [ "cgm8gw0" ], "score": [ 3 ], "text": [ " > but i wonder how we can have an industry based on no actul value beeing made.\n\nWhat do you mean \"an industry\"? Which industry?\n\nThe buying and selling of stocks is valuable because it gives more access to funds for future development. ...
[]
[]
[ [] ]
2rhdp2
why does freshly baked bread go stale after about a day of sitting out, while store bought, packaged bread can last a couple weeks (or even longer)?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2rhdp2/eli5_why_does_freshly_baked_bread_go_stale_after/
{ "a_id": [ "cnfw2hq" ], "score": [ 3 ], "text": [ "Preservatives. \nFresh baked bread will keep longer sealed in a bag in the fridge." ] }
[]
[]
[ [] ]
eux261
how do humidifiers create water vapor so quickly?
I first thought they used insane amounts of heat at once but it didn't make sense as the humidifier was still cold and so was the vapor
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/eux261/eli5_how_do_humidifiers_create_water_vapor_so/
{ "a_id": [ "ffs0jqo" ], "score": [ 10 ], "text": [ "They use sound. Imagine a speaker vibrating the water. If you start slow, you move all the water. As you go faster, so does the water movement.\n\nThere is a point in which it vibrates so fast the water can't catch up, creating a vacuum. There i...
[]
[]
[ [] ]
bag6l9
when faced with a totally new material how do chemists figure out what elements the material is made out of?
Suppose I am a chemist and I come across this unknown material. How do I figure out the elements that make up this material?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/bag6l9/eli5_when_faced_with_a_totally_new_material_how/
{ "a_id": [ "ekb8ezw", "ekbndhk" ], "score": [ 7, 5 ], "text": [ "You place it in a spectrometer. Using different types(such as a flight of mass spectrometer, nmr, infrared spectrometer ) you can see what a substance is made out of, what percentages of different elements are in its composi...
[]
[]
[ [], [ "https://en.wikipedia.org/wiki/Flame_test", "https://en.wikipedia.org/wiki/Elemental_analysis#CHNX_analysis", "https://en.wikipedia.org/wiki/X-ray_fluorescence" ] ]
v0snp
how can we build massive skyscrapers that support so much weight?
For example, the Burj Khalifa in Dubai is 2,723 feet tall and but only 500+ feet wide. What magic of engineering can such a narrow base support so much weight (building + people). And can I apply these same techniques to jenga towers and/or sand castles?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/v0snp/eli5_how_can_we_build_massive_skyscrapers_that/
{ "a_id": [ "c50akja", "c50d8im" ], "score": [ 4, 2 ], "text": [ "[Source](_URL_0_)\n\nA lot of concrete and steel, strategically placed and buried. Special concrete mixes and laying techniques that result in a concrete foundation that cures evenly (no cracking or variations in strength) a...
[]
[]
[ [ "http://en.wikipedia.org/wiki/Burj_khalifa#Construction" ], [] ]
b310w7
why do some online services (banks etc.) require passwords of a specific length. for example my online banking requires a password that is exactly 6 characters. this seems less secure than allowing any length. why do they do this?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/b310w7/eli5_why_do_some_online_services_banks_etc/
{ "a_id": [ "eiwcl5z", "eiwigf6" ], "score": [ 4, 11 ], "text": [ "Passwords are usually stored not as themselves but as a random looking number that is created from the password called a hash. Hashes are only really reversable by trying every combination until they find the correct one. E...
[]
[]
[ [], [ "example.org" ] ]
8t4wuy
why does a product mail-in/online rebate usually take 4+ weeks to be processed and received?
I just submitted a rebate and it stated it would take at least 4-6 weeks for me to receive it. What gives? I figured submitting these things online now would speed up the process over the old school snail mail method.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/8t4wuy/eli5_why_does_a_product_mailinonline_rebate/
{ "a_id": [ "e14sc82", "e14shfc", "e14usyu", "e158zih", "e15gbdc" ], "score": [ 3, 14, 6, 3, 4 ], "text": [ "The company that issued the rebate is earning interest on that money until you spend the rebate check. Hence the delay.", "Companies want to hold their m...
[]
[]
[ [], [], [], [], [] ]
1c890g
why doesn't japan hold a grudge against the u.s. after we nuked them?
Please correct me if I'm wrong, but it seems that relations between the U.S. and Japan are strong. I don't hear about Japanese harboring ill will against us. I assume economics (e.g. trade, globalization, etc.) has a lot to do with it. Edit: Any Japanese redditors out there who feel upset or otherwise, please chime...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1c890g/eli5_why_doesnt_japan_hold_a_grudge_against_the/
{ "a_id": [ "c9e012v", "c9e0q6m", "c9e1uut", "c9e4ggi", "c9e4vbd", "c9e5g17", "c9e5gc6", "c9e5nv8", "c9e5s1v", "c9e648w", "c9e6f9o", "c9e6fnp", "c9e6pb4", "c9e6pns", "c9e9c8s" ], "score": [ 432, 82, 135, 217, 8, 37, 3, 330...
[]
[]
[ [], [], [], [ "http://www.amazon.com/Embracing-Defeat-Japan-Wake-World/dp/0393320278", "http://books.google.com/books/about/Embracing_defeat.html?id=gMElGZ93ZXAC" ], [], [], [ "http://www.csmonitor.com/World/Asia-Pacific/2010/0806/Hiroshima-65-years-later-US-attends-ceremony-but-offers-no-...
46a11z
why can people sue for seemingly no reason and still win?
[deleted]
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/46a11z/eli5_why_can_people_sue_for_seemingly_no_reason/
{ "a_id": [ "d03g8ym", "d03gdni" ], "score": [ 3, 3 ], "text": [ "Clearly there isn't \"no reason\", or they wouldn't win.\n\nBut without knowing what you're talking about, there's no way we can know what the reason is in the specific case you're thinking of.\n\nIf you tell us what you're ...
[]
[]
[ [], [] ]
1jb6tq
why are there not more mutations and cancer at nagasaki and hiroshima?
From what I can tell people are living in and around the sites where both bombs were dropped. There are already reports of vegetation mutations around the area of the Fukushima disaster. Why are there not the same or worse mutations happening at these two bomb sites. Or are we just not hearing about them?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1jb6tq/eli5_why_are_there_not_more_mutations_and_cancer/
{ "a_id": [ "cbcyubh" ], "score": [ 3 ], "text": [ "The most dangerous radiation from a nuclear weapon has a short half life, the longer lasting radiation has a much lower risk and causes increased cancer risks. Lowering this even more is that there was a massive clean up effort after the bombs we...
[]
[]
[ [] ]
7k4pja
why do we become physically attracted to some people over time rather than immediately like with others?
[deleted]
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/7k4pja/eli5_why_do_we_become_physically_attracted_to/
{ "a_id": [ "drbk22x" ], "score": [ 2 ], "text": [ "one factor that plays into it is the mere exposure effect. the more you're around someone, the more likely they are to like you more, whether that be platonically, romantically, or sexually. of course, not the only reason, just a factor. \n\n" ...
[]
[]
[ [] ]
1sgc71
when sliding on a slick road, why does downshifting in a manual car slow you down more efficiently?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1sgc71/eli5when_sliding_on_a_slick_road_why_does/
{ "a_id": [ "cdxbgfp" ], "score": [ 2 ], "text": [ "As the others already said, it does not. \n\nHowever, it is easier to slow down without locking up a wheel by using engine braking rather than by normal braking. This is just because when engine braking, the wheels are still driven by the engine,...
[]
[]
[ [] ]
1sjlsy
what would happen if the u.s. suspended all foreign aid for one year and applied that money to helping our own people?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1sjlsy/eli5_what_would_happen_if_the_us_suspended_all/
{ "a_id": [ "cdy7voy", "cdyakjw", "cdyatkr" ], "score": [ 6, 2, 2 ], "text": [ "We'd anger a lot of countries, and quite likely lose a lot of economic and military advantages we get from supporting them, and not really change much here. 50 billion is basically nothing in the US bu...
[]
[]
[ [], [], [] ]
4orn8i
why are video games still sold as cds while usb drives can be so much smaller, more durable and hold so much more.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/4orn8i/eli5why_are_video_games_still_sold_as_cds_while/
{ "a_id": [ "d4ezomy", "d4ezrtb", "d4ezxc1", "d4f2bmu", "d4f2g03", "d4f6i55" ], "score": [ 253, 21, 28, 2, 3, 6 ], "text": [ "A disc costs considerably less to make than a USB drive. Digital media will usurp discs, not USB drives. ", "I worked at a comp...
[]
[]
[ [], [], [ "https://www.amazon.com/dp/B000B02B92/ref=wl_it_dp_o_pC_S_ttl?_encoding=UTF8&colid=30ODBP7JF1R4R&coliid=I17L8HC4S4HSK1&psc=1", "https://www.amazon.com/JOIOT-10pcs-Thumb-Memory-Storage/dp/B0191T7Y68/ref=sr_1_4?s=pc&ie=UTF8&qid=1466305977&sr=1-4&keywords=bulk&refi...
1o30x1
why doesn't it hurt when someone pinches the skin on your elbow? seriously, try it. it doesn't hurt.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1o30x1/eli5_why_doesnt_it_hurt_when_someone_pinches_the/
{ "a_id": [ "ccocs8m", "ccoeq5k", "ccog1ka" ], "score": [ 7, 3, 3 ], "text": [ "Pinching hurts because they are stretching your skin where it isn't supposed to be stretched and it is pinching stuff inside the skin. The skin around your elbows is loose to allow the joint flexibility...
[]
[]
[ [], [], [] ]
3t3kbd
can muslim communities call out a jihad on daesh? if so, why aren't they doing it?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/3t3kbd/eli5_can_muslim_communities_call_out_a_jihad_on/
{ "a_id": [ "cx2shli", "cx2sjj0" ], "score": [ 2, 2 ], "text": [ "I'm going to figure by 'Muslim Countries' you don't really mean like West Africa or Indonesia.\n\nIran and Saudi Arabia are the big dogs of the Middle East. They're engaged in a cold war against one another with espionage an...
[]
[]
[ [], [] ]
1s1z2q
why is locking your knees so bad?
I always hear fitness instructors telling you not to lock your knees. I've never heard anyone say its OK to lock your knees.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1s1z2q/eli5_why_is_locking_your_knees_so_bad/
{ "a_id": [ "cdt4jw4" ], "score": [ 2 ], "text": [ "Higher chance of injury if your knees are locked while doing certain exercises. \n\nBend your knee slightly and you can feel the support your kneecap has from your quads. That isnt there as much when your knee is locked. " ] }
[]
[]
[ [] ]
27algn
why dont we have hovercars and other hoverthings :d
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/27algn/eli5_why_dont_we_have_hovercars_and_other/
{ "a_id": [ "chyxm55" ], "score": [ 3 ], "text": [ " > 1) Why cant we just use magnets on a car and use a magnet field on a road. Im not really an expert in this kind of stuff. And other things, a car is just the first thing that came to my mind. \n\nMag-Lev, in its current form, must follow a ra...
[]
[]
[ [] ]
83ijcd
how exactly martin shkerelli defrauded his investors.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/83ijcd/eli5_how_exactly_martin_shkerelli_defrauded_his/
{ "a_id": [ "dvi1wty" ], "score": [ 5 ], "text": [ "He did not make his investors more money. He paid them off with new investors and then paid those new investors off with funds from one of his companies. " ] }
[]
[]
[ [] ]
1vnr0i
if a baby grew up with animals, would they learn their 'language'? or would they be unable to speak, as if they hadnt been around anyone at all?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1vnr0i/eli5_if_a_baby_grew_up_with_animals_would_they/
{ "a_id": [ "ceu3737" ], "score": [ 5 ], "text": [ "There have been [very few cases](_URL_0_) of this happening, so any answer here will contain a degree of speculation.\n\nFrom the article I link to:\n\n > Feral children lack the basic social skills that are normally learned in the process of en...
[]
[]
[ [ "http://en.wikipedia.org/wiki/Feral_child#Reality" ] ]
errk8r
why are younger people becoming less and less religious?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/errk8r/eli5_why_are_younger_people_becoming_less_and/
{ "a_id": [ "ff5i7c7", "ff5inez", "ff5iqxo" ], "score": [ 11, 4, 2 ], "text": [ "Because we have access to the internet – a.k.a. the nearly infinite wealth of human knowledge – from a very young age now. People are less likely to blindly adopt their parents and family’s beliefs whe...
[]
[]
[ [], [], [] ]
1z84q4
why, when i squint, do headlights appear to have extremely long glowing vertical lines coming off them?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1z84q4/why_when_i_squint_do_headlights_appear_to_have/
{ "a_id": [ "cfrg682", "cfrhqqp" ], "score": [ 5, 12 ], "text": [ "It could be different for everyone. I wear glasses, so when I squint things appear to be more clear and detailed.", "My guess is your eye lashes are forming novel, shaped apertures over your lenses. The apertures determ...
[]
[]
[ [], [] ]
1sxoqe
what is total football? all i know is it's some style of playing football(soccer)
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1sxoqe/what_is_total_football_all_i_know_is_its_some/
{ "a_id": [ "ce293u5", "ce295ta", "ce296ud" ], "score": [ 5, 2, 4 ], "text": [ "It's a concept of football developed in the Netherlands, which dictates that any player in any position should be able to play in any other position. It's come to mean a flowing passing and pressing gam...
[]
[]
[ [], [], [ "https://www.youtube.com/watch?v=u7-yHDbyGFw" ] ]
6wq3mk
criminal vs. civil cases and double jeopardy...
Something that has bugged me for a while. How can someone be found "Not Guilty," of a crime in criminal court, yet still may have to face a civil court for the same crime? Isn't that double jeopardy?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/6wq3mk/eli5_criminal_vs_civil_cases_and_double_jeopardy/
{ "a_id": [ "dm9vvps" ], "score": [ 6 ], "text": [ "Criminal court is vs the government and society as a whole.\n\nCivil court is vs another person or a company.\n\nYou can be found not guilty of committing a crime against society but still be found guilty of committing a crime against another per...
[]
[]
[ [] ]
3iggh2
why don't hackers like anonymous hack and erase consumer debt data?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/3iggh2/eli5_why_dont_hackers_like_anonymous_hack_and/
{ "a_id": [ "cug5r26", "cug5toi", "cug5x3r" ], "score": [ 8, 8, 2 ], "text": [ " Cause the banks will just restore from backups once they detect that shitload of accounts and money are wiped. The accounts are continuously audited", "1) The debtor still signed paper copies of ...
[]
[]
[ [], [], [] ]