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4l6wpl
From the 70s to the '83 crash, what did the average working American think of video games as a whole?
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/4l6wpl/from_the_70s_to_the_83_crash_what_did_the_average/
{ "a_id": [ "d3lwi6b" ], "score": [ 12 ], "text": [ "Finally, a topic I can actually answer! First things first, I'm not quite sure what \"an average working American\" would think or know, or even who that might refer to. In lieu of responding to that, then, I'll instead briefly summarize some po...
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[]
[ [] ]
92p6h1
how do red blood cells know when/where to release its oxygen and how does that oxygen find it's way into a cell rather than staying in the blood stream?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/92p6h1/eli5_how_do_red_blood_cells_know_whenwhere_to/
{ "a_id": [ "e37bor5", "e37bqd6", "e37cq2x", "e37hf1f", "e37krps" ], "score": [ 10, 11, 3, 4, 2 ], "text": [ "Conditions in the body are different than conditions in the lungs. In the body Oxygen and hemoglobin become less sticky so oxygen is released. Oxygen also f...
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[ [], [], [], [], [] ]
4nk6wj
How did the armed forces in anarchist territories such as Revolutionary Catalonia and the Free Territory work?
The hierarchical nature of a military is something anarchists would be vehemently against, but clearly, they had fighting forces. How would orders be given and enforced in these places?
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/4nk6wj/how_did_the_armed_forces_in_anarchist_territories/
{ "a_id": [ "d457c3z" ], "score": [ 3 ], "text": [ "It really depended on which Trade Union was in charge. In the CNT, for example, the militias democratically elected leaders, but their authority was temporary. It might be best to think of it like a temporary task force commander who can be repla...
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[ [] ]
6snq97
Who would be King of Britain if Catholics were allowed?
So around 1700 if I recall when Anne died she had no kids. George I was chosen because he was the closest non-Catholic heir. Who was the closest living Catholic and if they has succeeded would their decedents still be king/queen?
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/6snq97/who_would_be_king_of_britain_if_catholics_were/
{ "a_id": [ "dle7ryq", "dle8n23" ], "score": [ 3, 2 ], "text": [ "The likely heir would have been James Francis Edward Stuart. His father was the last Catholic king of the United Kingdom, King James II in England and Ireland and known as James VII in Scotland. He fathered a son, James Fran...
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[ [], [] ]
1r3wa9
Why is fluorine more electronegative than nitrogen? Than bromine? Why is hydrogen so weird?
for reference: _URL_0_ I feel like no one bothers to learn about electronegativity in terms of basic physics, they just accept electronegativity as a fact and that "puzzle pieces like to fit together in Lewis dot diagrams". Can anyon offer me a more rigorous explanation of electronegativity?
askscience
http://www.reddit.com/r/askscience/comments/1r3wa9/why_is_fluorine_more_electronegative_than/
{ "a_id": [ "cdjc2e8", "cdjeduy" ], "score": [ 97, 5 ], "text": [ "Electronegativity is how strongly a particular atom attracts electrons. \n\nTo understand what that means, you need to know what attracts electrons, and what factors can affect that.\n\nElectron orbitals have very specific ...
[]
[ "http://www.chem.umass.edu/genchem/whelan/class_images/111_Electronegativity_Table.jpg" ]
[ [], [ "http://en.wikipedia.org/wiki/Electronegativity" ] ]
32deck
During US Segregation, were Whites free to use Black facilities without legal penalty?
In other words, were Whites allowed to use a segregated Black bathroom or drinking fountain at will without fear of getting in trouble with the law? Could they sit anywhere on the bus, even in the back? Was there some de facto privilege that they wouldn't get prosecuted in the same way an African-American would if he/s...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/32deck/during_us_segregation_were_whites_free_to_use/
{ "a_id": [ "cqa6c15" ], "score": [ 3 ], "text": [ "In his book *The Land Where Blues Began*, folklorist Alan Lomax says he was arrested for shaking hands with Robert Johnson's mother in the 1940s. Alan Lomax was white and Robert Johnson (and his mother) were black. There's also an interview of Al...
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[]
[ [ "http://research.culturalequity.org/rc-b2/get-dil-details.do?sessionId=84" ] ]
ss69l
Pre-modern Political Parties
In researching the history of American Political Parties, there are occasional references to factions that existed in earlier times, that are reminiscent of political parties, like the Greens and the Blues in the Byzantine Empire. I was wondering what information people might have on these organizations. Did they exi...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/ss69l/premodern_political_parties/
{ "a_id": [ "c4gjosq", "c4goo58" ], "score": [ 5, 2 ], "text": [ "The Greens and Blues weren't really political parties, although they evolved a political dimension. They began as the Byzantine equivalent of English soccer hooligans, but due to the importance of guanxi (there is no better ...
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[]
[ [], [] ]
3eho5c
why must class action lawsuit commercials have to stress "i'm a non-attorney spokes person"
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/3eho5c/eli5_why_must_class_action_lawsuit_commercials/
{ "a_id": [ "ctf1drn" ], "score": [ 5 ], "text": [ "Giving legal advice without a license is a crime, and paying people to speak for you without disclosing it is a violation of legal ethics." ] }
[]
[]
[ [] ]
dc0a5x
What was day to day life like for European sailors en route to America around 1500?
What would a typical sailor do? Did they have specific tasks that they had to do or was everybody working where needed. Was the ship an environment in which there was always something going on or was there a lot of downtime?
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/dc0a5x/what_was_day_to_day_life_like_for_european/
{ "a_id": [ "f29m4xw" ], "score": [ 2 ], "text": [ "Check out some of my old posts on ships of that exact period:\n\n#### Portuguese ships questions \n\n* [Crew to a 15th century caravel](_URL_20_) \n* [How did they steer (cog) ships before the steering wheel?](_URL_16_)\n* [Traveling to Indi...
[]
[]
[ [ "https://www.reddit.com/r/AskHistorians/comments/9s3liw/how_did_columbuss_convoy_of_ships_stay_together/e8m6bst", "https://www.reddit.com/r/AskHistorians/comments/8rccy0/were_used_sailing_vessels_commonly_available_in/e0ris5d/", "https://www.reddit.com/r/AskHistorians/comments/8itys6/are_the_triangula...
2na751
how come radio is free with advertisements, but tv has a paid subscription but still has commercial advertisements?
And why are commercials always 100% louder than the show?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2na751/eli5_how_come_radio_is_free_with_advertisements/
{ "a_id": [ "cmbr80l", "cmbrg9m", "cmbshf1" ], "score": [ 9, 5, 3 ], "text": [ "Television was originally free with advertising, before the predominance of cable. In fact, you could hook up an antenna to your TV right now and still get the network broadcasts and local PBS stations ...
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[]
[ [], [], [] ]
4d8dqm
ELI4: "curled up" dimensions?
(ELI4 because I'm dumber than a 5 year old) Can someone please explain what it means when physicists say that there are more than 4 dimensions, but we don't notice the other dimensions because they are "curled up"?
askscience
https://www.reddit.com/r/askscience/comments/4d8dqm/eli4_curled_up_dimensions/
{ "a_id": [ "d1otunp" ], "score": [ 12 ], "text": [ "Imagine that you lived on a cylinder, and you could move up and down along the cylinder, or around it. Then imagine that the radius of the cylinder gets smaller and smaller, until you don't even notice that it's curved anymore, all you notice is...
[]
[]
[ [ "http://klotza.blogspot.com/2015/11/what-do-we-know-about-extra-dimensions.html" ] ]
3mnvuw
do bald people wash their heads with shampoo or body wash?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/3mnvuw/eli5_do_bald_people_wash_their_heads_with_shampoo/
{ "a_id": [ "cvgllke", "cvglum3", "cvgmjh4", "cvgn34a" ], "score": [ 3, 4, 3, 2 ], "text": [ "Well, I can't speak for the other bald guys, but I just go with water. That seems to do the trick just fine. ", "I wash my head with a special shampoo to reduce the excess of b...
[]
[]
[ [], [], [], [] ]
4cwb2m
why would anyone get a credit card with an annual fee when so many cards have no annual fee?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/4cwb2m/eli5_why_would_anyone_get_a_credit_card_with_an/
{ "a_id": [ "d1lwdjm", "d1lwduw", "d1lwfvk", "d1lwgzj", "d1lyiic", "d1lyl15", "d1lzeus", "d1n4cvh" ], "score": [ 5, 4, 4, 4, 3, 2, 2, 2 ], "text": [ "it depends if the \"value added bonus\" you get for the fee is worth the added fee. \n\nfor ...
[]
[]
[ [], [], [], [], [], [], [], [] ]
40pgyc
how do cold sores go from lying dormant for weeks or months, to breaking out and spreading, seemingly in a matter of seconds?!
Actually, I can usually feel the cold sores popping up in the moment. It's freaky as shit when I feel the tingling around my lips, and depressing as hell when I feel the inflammation, but also pretty fascinating how fast it all happens!
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/40pgyc/eli5_how_do_cold_sores_go_from_lying_dormant_for/
{ "a_id": [ "cyw32iv" ], "score": [ 2 ], "text": [ "Cold Sores are herpes. Two types, HSV-1 and HSV-2. Type 1 does cold sores, Type 2 usualNo fear though, in the United States, 57.7% of the population has it. This causes cold sores. HSV-2 is usually genital ones, 16.2% in the US have this.\n\n...
[]
[]
[ [] ]
183kzo
how can you hold a sparkler up to your hand and not get burned?
I don't understand how something can have a high temperature but not very high heat.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/183kzo/eli5_how_can_you_hold_a_sparkler_up_to_your_hand/
{ "a_id": [ "c8bc23j", "c8bf6uz" ], "score": [ 2, 2 ], "text": [ "The spark of a sparkler is a very concentrated point of heat, so it dissipates rather more efficiently than larger sources of heat such as a naked flame on a candle (for example). The amount of heat it can put out is relativ...
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[]
[ [], [] ]
60gxme
what's preventing the us from just not paying their debt to china?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/60gxme/eli5_whats_preventing_the_us_from_just_not_paying/
{ "a_id": [ "df69d1t", "df69h70", "df6elte" ], "score": [ 2, 8, 9 ], "text": [ "I'm not sure I understand the question. The U.S. is paying its debt to China (and everyone else). Outside of a few post-revolution and reconstruction-era hiccups, I don't think the U.S. has ever missed ...
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[]
[ [], [], [] ]
3zoklq
how los angeles flourished despite being built in a desert
2nd largest city in the US, but seems to constantly be in a drought crisis. How did LA get so big with these kind of water issues?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/3zoklq/eli5_how_los_angeles_flourished_despite_being/
{ "a_id": [ "cynsaew", "cynsale", "cynt59j" ], "score": [ 3, 3, 5 ], "text": [ "In the early 1900's, Los Angeles built a 400 mile long aqueduct to carry water from the north to the city. This allowed the population to boom without any concern for water. Right now, we only have wate...
[]
[]
[ [], [ "https://en.wikipedia.org/wiki/California_Water_Wars", "https://goo.gl/maps/oVp3M6i6uFq" ], [ "https://en.m.wikipedia.org/wiki/Colorado_River_Aqueduct", "https://en.m.wikipedia.org/wiki/California_Aqueduct", "https://en.m.wikipedia.org/wiki/William_Mulholland", "https://en.m.wiki...
1km9uq
While the USSR existed, were there any Russian towns that were unaffected by Soviet Russian policies?
For example, were there any towns that had property rules different from the rest of Russia?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1km9uq/while_the_ussr_existed_were_there_any_russian/
{ "a_id": [ "cbqk2c9", "cbql4gk", "cbr03ji", "cbr3fjk" ], "score": [ 7, 4, 2, 2 ], "text": [ "There was the story of the [family that didn't know World War II happened](_URL_0_).\n\nThere are some places in Siberia that are very isolated and populated with indigenous people...
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[]
[ [ "http://www.smithsonianmag.com/history-archaeology/For-40-Years-This-Russian-Family-Was-Cut-Off-From-Human-Contact-Unaware-of-World-War-II-188843001.html" ], [], [], [] ]
40qx84
life before clocks/alarm clocks.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/40qx84/eli5life_before_clocksalarm_clocks/
{ "a_id": [ "cywe3kv", "cywe7ex", "cywe9he", "cywe9r9", "cywely7" ], "score": [ 26, 10, 6, 3, 3 ], "text": [ "The roosters crowed on the farm. The sun rose in the east. Our bodies have a pretty strong natural clock. ", "In the cities at least, you had [knocker-u...
[]
[]
[ [], [ "https://en.wikipedia.org/wiki/Knocker-up" ], [], [], [] ]
1e2gyv
Since other animals have different nutritional requirements from humans, does meat taste sweet to dogs?
askscience
http://www.reddit.com/r/askscience/comments/1e2gyv/since_other_animals_have_different_nutritional/
{ "a_id": [ "c9w52oo" ], "score": [ 4 ], "text": [ "Dogs have the same ability to taste the basic 4 flavor components that we do (salt, sour, sweet, bitter). Their ability to taste might be somewhat diminished in comparison to us because they have only around 2000 taste buds to a human's 9000. The...
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[]
[ [ "http://info.sjc.ox.ac.uk/scr/hacker/docs/To%20be%20a%20bat.pdf" ] ]
3yzbpp
why do some sites require you to enter your age to confirm if you're an adult if it's so easily circumventable?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/3yzbpp/eli5_why_do_some_sites_require_you_to_enter_your/
{ "a_id": [ "cyhyo3o", "cyhyp9x", "cyi0jgc", "cyi2upv", "cyi373k", "cyi4ckv", "cyi50bv" ], "score": [ 57, 326, 31, 12, 5, 6, 8 ], "text": [ "just a legal formality. Its so if they get asked about it by the law they can say \"well we tried to keep und...
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[ [], [], [], [], [], [], [] ]
6mzos1
why do some fruits vary in taste such as watermelon and cantaloupe?
When I eat a Red delicious apple it tastes the exact same every time, when I eat a "good" watermelon it tastes completely different than a "bad" one. I've even had two melons I grew harvested at the same time and one was bursting with flavor while the other was below average. Is this strictly due to ripeness?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/6mzos1/eli5_why_do_some_fruits_vary_in_taste_such_as/
{ "a_id": [ "dk5m4jm" ], "score": [ 4 ], "text": [ "Your Red Delicious apple was selected from thousands of varieties of apples to survive the transportation journey from the orchard to the store yet remain ripe and delicious. Many other of the apple varieties would not do this. Some varieties wer...
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[ [] ]
fci3d
Followup to: What is the distribution of numbers picked at random by people?
Original thread by iamayam [here](_URL_0_). Gist of the question: > I want each person in a large group of, let's say, 50 people to choose a number from 1 to 4. Each person picks his/her number silently, so that no one else knows who has what number. > What is the likely distribution of those picking 1, 2, 3, or 4...
askscience
http://www.reddit.com/r/askscience/comments/fci3d/followup_to_what_is_the_distribution_of_numbers/
{ "a_id": [ "c1ewjv6", "c1ewofn", "c1ex0hr" ], "score": [ 9, 4, 5 ], "text": [ "There's something in game theory call a beauty contest, where you tell people to pick a number between 1 and 100 and that a prize will be awarded to whomever picks closest to two thirds of the average o...
[]
[ "http://www.reddit.com/r/askscience/comments/f79qn/what_is_the_distribution_of_numbers_picked_at/", "http://www.gotoquiz.com/poll/random_numbers025" ]
[ [], [], [ "http://www.nytimes.com/2011/01/11/science/11esp.html?_r=2&scp=2&sq=bayesian&st=cse" ] ]
6wm5zc
what happens to the flooded cars after a major flood?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/6wm5zc/eli5_what_happens_to_the_flooded_cars_after_a/
{ "a_id": [ "dm91x81", "dm928eh", "dm9293h" ], "score": [ 2, 3, 2 ], "text": [ "They are a complete loss in most cases, cleaning and reselling them usually gives pretty big title flaws. If people don't check, some unscrupulous dealer might sell a few of them, but most people check...
[]
[]
[ [], [], [ "http://www.nytimes.com/2005/10/17/automobiles/a-used-car-or-a-katrina-biohazard.html?mcubz=0", "http://www.autonews.com/article/20070917/SUB/709170368/katrina-cars-still-hit-the-market" ] ]
71x64l
how did it happen that the population of oman upwards of age 25 contains a lot more men than women?
After seeing the [source](_URL_0_) of [this](_URL_1_) post, I noticed a hugely assymetrical distribution in the data for Oman. Can anyone explain me how this happened? Edit: some neigbouring countries like UAE and Saudi Arabia have similar distributions but maybe not as extreme. Except for this region I haven't found ...
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/71x64l/eli5_how_did_it_happen_that_the_population_of/
{ "a_id": [ "dne4rar", "dneaxim" ], "score": [ 31, 10 ], "text": [ "Lots of migrant workers. Oman is a rich country thanks to oil. Lots of people from other countries come to work there and send money back home. It is usually men that do this.\n\nOver 40% of the population are migrants, mo...
[]
[ "https://www.populationpyramid.net/oman/2017/", "https://www.reddit.com/r/dataisbeautiful/comments/71qyhf/age_distribution_for_the_10_largest_countries_oc/" ]
[ [], [] ]
8d05or
why does an extremely bright source of light cause the surrounding area to appear dark?
I assume it is due to our eyes adjusting for the contrast of the difference in brightness?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/8d05or/eli5_why_does_an_extremely_bright_source_of_light/
{ "a_id": [ "dxj6xa0", "dxl0qir", "dxnkkeg" ], "score": [ 30, 2, 2 ], "text": [ "Yes, this is exactly it.\n\nYour pupils expand and contract according to the amount of light you receive. When you see something very bright your pupils contract, making everything darker. ", "The ...
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[]
[ [], [], [] ]
1sb9l2
how is it possible that the little birds are not all frozen solid right now?
It's hard for me to believe that a little ball of fuzz can keep a little bird from becoming a chunk of ice. Their feet at least must freeze every night. It's not extremely cold where I live, but it has been below freezing most of the week. A few days ago, I actually saw a hummingbird going over what was left of a honey...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1sb9l2/how_is_it_possible_that_the_little_birds_are_not/
{ "a_id": [ "cdvscli", "cdvsfhz", "cdvu8jw" ], "score": [ 10, 6, 3 ], "text": [ "Birds can store a lot of air in their feathers, which insulates them from the cold air. ", "Penguins have special circulatory system in their feet where the cold blood flowing back to their bodies ...
[]
[]
[ [], [], [] ]
318rwi
why when i'm nervous do i have more bowl movements than normal?
Why?!?!?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/318rwi/eli5_why_when_im_nervous_do_i_have_more_bowl/
{ "a_id": [ "cpzdapr" ], "score": [ 2 ], "text": [ "Voiding the bowels when under stress or danger is part of our evolutionary heritage, although the exact reason is unknown. One theory is that it \"lightens the load,\" allowing you to run or fight more effectively. This is unlikely however as the...
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[]
[ [] ]
7ij1a6
Why do hard-boiled eggs explode loudly when microwaved?
askscience
https://www.reddit.com/r/askscience/comments/7ij1a6/why_do_hardboiled_eggs_explode_loudly_when/
{ "a_id": [ "dqz4uwf", "dqzf841" ], "score": [ 26, 50 ], "text": [ "The shell is hard. When the contents are heated unevenly (more toward the centre) expansion occurs. The shell can't expand so... boom! Boiling an egg heats it more evenly, but even then the shell will still crack quite of...
[]
[]
[ [], [ "http://www.goodhousekeeping.com/food-recipes/cooking/tips/a32091/how-to-microwave-eggs/" ] ]
1utjmc
what is a hacker and what differentiates a good hacker from a great one?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1utjmc/eli5_what_is_a_hacker_and_what_differentiates_a/
{ "a_id": [ "celkzu0", "celm5pm" ], "score": [ 2, 3 ], "text": [ "A good hacker is one who gets good press coverage when they're caught. A great hacker is one noone knows exists.", "It all depends on what you mean by \"hacker.\"\n\nTraditionally a hacker was a person that like to take ...
[]
[]
[ [], [] ]
aoxvsd
When do you cauterize a wound vs applying a tourniquet? Assuming the wound is on a limb where either could be applied.
askscience
https://www.reddit.com/r/askscience/comments/aoxvsd/when_do_you_cauterize_a_wound_vs_applying_a/
{ "a_id": [ "eg4efe9" ], "score": [ 8 ], "text": [ "A tourniquet is more often used as a temporary way of stopping a wound bleeding until the damaged vessels can be repaired.\n\nCauterizing is generally used as a permanent way of sealing off a vessel, for example if something has been amputated." ...
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[ [] ]
1ris3t
how much does a cloud weigh and how does it defy gravity for so long?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1ris3t/eli5_how_much_does_a_cloud_weigh_and_how_does_it/
{ "a_id": [ "cdnnu9e", "cdnnvrl", "cdnnzya", "cdnoawj" ], "score": [ 2, 2, 2, 2 ], "text": [ "A cloud is made of many tiny, individual water drops. its total weight is huge, but since each drop is separate, they can all remain floating together, just like dust in a room. "...
[]
[]
[ [], [], [], [] ]
1iqxam
eli: why do dogs eat grass when they're about to throw up?
My dogs getting older and she vomits more frequently. I was curious to the nature of this process.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1iqxam/eli_why_do_dogs_eat_grass_when_theyre_about_to/
{ "a_id": [ "cb75wh5" ], "score": [ 2 ], "text": [ "Dogs cannot digest grass so it irritates the stomach, working as an emetic, and causes them to vomit. \n\nIt is similar to humans using activated charcoal. " ] }
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[ [] ]
2gr7pv
To create artificial gravity in space, why cant the spaceship be rotated at high speeds generating centripetal forces that 'pull' the occupants to the edges?
I understand that stability may be a problem and that you would be able to walk on any surface, but why isn't this ever talked of as a possibility? I assume it wouldn't work but if it did where do I pick up my nobel prize?
askscience
http://www.reddit.com/r/askscience/comments/2gr7pv/to_create_artificial_gravity_in_space_why_cant/
{ "a_id": [ "cklrhdd", "cklsqok", "cklv807", "cklwwyl", "cklxc2g", "cklxk0n", "cklxp4f", "ckly7d9", "ckm1n27" ], "score": [ 111, 14, 9, 32, 5, 2, 2, 2, 2 ], "text": [ " > why isn't this ever talked of as a possibility?\n\nIt is! It's ...
[]
[]
[ [ "http://en.wikipedia.org/wiki/Nautilus-X" ], [], [], [], [ "http://blogs.scientificamerican.com/but-not-simpler/2013/08/15/how-elysium-is-a-carnival-ride-and-why-its-atmosphere-is-a-bucket-of-water/", "http://www.nss.org/settlement/space/toruscutaway.htm", "http://www.youtube.com/watch?v...
5ibmro
Have historians figured out how they will process and interpret teets and internet posts?
This might sound like a dumb question, but when historians read old texts, I assume you have to know some cultural context behind it to put it into perspective. Considering there are thousands of tweets a second, how will anybody in the future process how common people felt today, especially in the context of memes? A...
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/5ibmro/have_historians_figured_out_how_they_will_process/
{ "a_id": [ "db7vj5a" ], "score": [ 8 ], "text": [ "I don't think any historian today knows, and I don't think the historical community of today will even make the decision. In my view, the decision will be made by archivists who have surprisingly little interest in anticipating the needs and futu...
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[ [] ]
a25mtw
how my dash cam knows there are red light cameras ahead.
My husband says it visually detects them but sometimes it will say there's one ahead when we're on an highway overpass - where there's no red lights let alone cameras.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/a25mtw/eli5_how_my_dash_cam_knows_there_are_red_light/
{ "a_id": [ "eavbbsz" ], "score": [ 3 ], "text": [ "All red light cameras must be of public knowledge. So if your dash cam is connected to gps, it has them marked on the “internal map.” My radar detector does the same. " ] }
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[ [] ]
38n499
We've advanced a lot in the last 500 years. What were the major changes and improvements in the 500 years before that?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/38n499/weve_advanced_a_lot_in_the_last_500_years_what/
{ "a_id": [ "crw9t2m" ], "score": [ 5 ], "text": [ "This is actually a quite tricky question. Of course you must specify which culture and types of innovations you are referring to. \n\nFor western and European culture there is of course the fact that much of the technology and knowledge of the Ro...
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[ [] ]
6rl7gw
What is the earliest usage or mention of "shock troops"?
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/6rl7gw/what_is_the_earliest_usage_or_mention_of_shock/
{ "a_id": [ "dl5zw4c" ], "score": [ 2 ], "text": [ "The general idea of shock troops has been around pretty much forever. When you have a defending force that's dug in and an attacking force, just throwing your standard line infantry against the defenses is rarely effective. So, you need heavier, ...
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[ [] ]
rpkho
Can you improve your vision?
I was wondering if it's possible to improve your vision without surgery, just through practice, including distance and reading etc. your eyes are a muscle, so can't you work it out? I have 20/15 vision, could I get that to 20/10 or better? Can it be used to slow down the decline in eyesight from aging?
askscience
http://www.reddit.com/r/askscience/comments/rpkho/can_you_improve_your_vision/
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[]
[]
[ [ "http://en.wikipedia.org/wiki/Visual_system" ], [], [ "http://www.webmd.com/eye-health/features/natural-vision-correction-does-it-work?page=2", "http://one.aao.org/ce/practiceguidelines/therapy_content.aspx?cid=d7238b2b-a59f-49f6-9f30-64d1e84efc3b" ], [ "http://www.nap.edu/openbook.php?r...
8iean5
what caused the consistent physical attributes amongst different races?
For example, did Asians develop their eye shape because it had a specific advantage? Why do Caucasians have skin that is highly susceptible to sunburn? I understand that humans are all the same ‘species’ but I don’t understand when these vast differences developed, or why. Please note I don’t intend for this to be r...
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/8iean5/eli5_what_caused_the_consistent_physical/
{ "a_id": [ "dyr0xrw", "dyr1ebo", "dyr9l9u", "dyrbmn5", "dyrbs98", "dyrlkt2", "dyrrsd3" ], "score": [ 7, 4, 2, 2, 2, 2, 2 ], "text": [ "What if I told you there was only one race? \n\nEvery difference mentioned is environmental adaptation, Genetic m...
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[ [], [], [], [], [], [], [] ]
37q5e5
how can the recent droughts and floods in texas both be caused by climate change?
The years-long drought and the recent mass rain fall in Texas have been blamed on Climate Change, how is it possible that both of these are caused by climate change, man made or not?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/37q5e5/eli5_how_can_the_recent_droughts_and_floods_in/
{ "a_id": [ "croupci", "crovcl3" ], "score": [ 14, 10 ], "text": [ "The key word is change. Not necessarily \"drier\" or \"Wetter.\" The actual impact to a particular region's climate varies on a lot of factors, and climate change is becoming one of the players there, but it isn't the sole...
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[ [], [] ]
45ddqx
Where to find reliable sources of Ancient Roman History, mainly about welfare? (Primary or secondary sources)
Hey guys, the other day I was in my history seminar class which is on the fall of the Roman Empire. So the subject of welfare came up in class and how some of the emperors gave welfare to their people. So I figured I should probably write my paper on that since everyone is probably going to be doing it on Christianity ...
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/45ddqx/where_to_find_reliable_sources_of_ancient_roman/
{ "a_id": [ "czx6u2y" ], "score": [ 3 ], "text": [ "Hi,\n\nour [homework policy](_URL_0_) requires some effort on your part:\n\n > If you do some research, come here and be honest about what your assignment is and give us a run down of what your research is showing you so far, you'll find users h...
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[]
[ [ "https://www.reddit.com/r/AskHistorians/comments/35pkem/askhistorians_homework_question_policy_rehash/" ] ]
1kn1v7
why women feel embarrassed if seen in their bra and under wear but completely content with a smaller bikini?
I understand how where you are plays a role in this but what's the psychology behind these events? EDIT: I marked this as explained its not showing up on my mobile. I have better understanding of this subject, thanks for all the great answers.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1kn1v7/eli5_why_women_feel_embarrassed_if_seen_in_their/
{ "a_id": [ "cbqleyi", "cbqlhqy", "cbqlib0", "cbqll2r", "cbqlsd3", "cbqm4t9", "cbqmkwp", "cbqmsif", "cbqo1zj", "cbqoj7r", "cbqorua", "cbqp346", "cbqphjt", "cbqplr8", "cbqpmbz", "cbqptks", "cbqpzdx", "cbqpzr6", "cbqqamt", "cbqqc1j", "c...
[]
[]
[ [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [], [ "http://www.youtube.com/watch?v=WJVHRJbgLz8" ], [], [], [], [], [], [], [], [], [ "http://yout...
2z9uio
why do certain trials, like james holmes, take years when they are essentially 100% guilty?
The shooting happened in 2012. It's almost three years later but it hasn't gone to trial yet. Why does this happen?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2z9uio/eli5_why_do_certain_trials_like_james_holmes_take/
{ "a_id": [ "cpgy1wd", "cpgy56j", "cpgy60g" ], "score": [ 3, 3, 2 ], "text": [ "Getting ready for trial takes time. There are numerous activities that need to be performed before either side is ready to argue their case (depositions, evidence gathering, pretrial motions, jury sele...
[]
[]
[ [], [], [] ]
cyaai3
Eating Horse meat was made taboo by the Roman Catholic church in the 8th century CE, while this taboo was successfully implemented in almost all of Christian Europe it wasn't in Italy where horse meat is still eaten in great amounts today, why ?
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/cyaai3/eating_horse_meat_was_made_taboo_by_the_roman/
{ "a_id": [ "eyrhkpj" ], "score": [ 20 ], "text": [ "Taken from an earlier answer I had on Horses in Germanic cultures, if you have any follow up questions, please let me know.\n\n___\n\nDuring the conversion process to Christianity, among the practices that were outlawed or at least very harshly ...
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[ [] ]
2tw1ag
why is it that if i walking through a neighborhood that the smaller dogs are more likely to chase me than the bigger ones?
Ex. When I jog it seems like the chihuahuas are always the ones chasing me while the German Shepherds hang back.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2tw1ag/eli5_why_is_it_that_if_i_walking_through_a/
{ "a_id": [ "co2tglo", "co2u2hn" ], "score": [ 2, 2 ], "text": [ "Maybe they're just compensating for their small size. ", "Bigger dogs are more often than not reprimanded for acting aggressive whereas little dogs are just laughed at and is viewed as being \"cute.\" Therefor they weren...
[]
[]
[ [], [] ]
498czx
why is it harder to cup water with your non-dominant hand?
Today I was trying to cup water from the faucet with my left hand and couldn't hold as much water than my right.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/498czx/eli5_why_is_it_harder_to_cup_water_with_your/
{ "a_id": [ "d0pu6r3" ], "score": [ 3 ], "text": [ "Everything is more difficult in your non-dominant hand, you don't have the same level of fine motor control, dexterity and eye-hand coordination. " ] }
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[]
[ [] ]
6mwv17
If you were to keep a bunch of cell phones within close proximity and call one of them, why does only that cell phone ring?
Why do cell phones not inadvertently pick up a call intended for another phone? I figure there is signal interference for them to filter out but how do phones jumble out a call meant for them if there are multiple other simultaneous call happening? I'm particularly interested in a physical explanation and the phone c...
askscience
https://www.reddit.com/r/askscience/comments/6mwv17/if_you_were_to_keep_a_bunch_of_cell_phones_within/
{ "a_id": [ "dk5r0yg", "dk5tg5x" ], "score": [ 4, 9 ], "text": [ "In simple terms - The cell network sends a custom data packet, which will only be recognised by the (supposedly unique) SIM card in one phone - transfer that card to one of the other phones and that one will ring.\n\nFour id...
[]
[]
[ [], [ "https://en.wikipedia.org/wiki/Time-division_multiple_access" ] ]
8h4hc6
what is a covered bond? and how do they work?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/8h4hc6/eli5_what_is_a_covered_bond_and_how_do_they_work/
{ "a_id": [ "dyh1y2z" ], "score": [ 4 ], "text": [ "Covered bonds are bonds that are secured by an underlying pool of assets, known as the cover pool. Investors buy covered bonds and so they have claim on the underlying pool. The underlying pool (typically mortgages or loans, but can also be ships...
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[]
[ [] ]
6vtqam
Could a person live normally only by sleeping small periods of time like 15 minutes if done correctly?
askscience
https://www.reddit.com/r/askscience/comments/6vtqam/could_a_person_live_normally_only_by_sleeping/
{ "a_id": [ "dm2ycib", "dm394rt", "dm3hjxu", "dm3im7v", "dm3jy7m", "dm3klue", "dm3nwc5", "dm3pecv", "dm3wnln" ], "score": [ 57, 190, 4, 27, 3, 2, 12, 7, 2 ], "text": [ "I would also be interested to know. Over the years I've read repo...
[]
[]
[ [], [ "https://science.nasa.gov/science-news/science-at-nasa/2005/03jun_naps/" ], [], [], [], [], [], [], [] ]
2wev4y
would i lose more weight on 1500 calories of healthy food or 1000 calories of junk food?
I keep reading a lot of conflicting articles. Some say it doesn't matter what you eat, a calorie deficit is all you need to lose weight. Others say 100 calories of burgers and fries is VERY different from 100 calories of fruits and veggies. Just curious.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2wev4y/eli5_would_i_lose_more_weight_on_1500_calories_of/
{ "a_id": [ "coq6klb", "coq70by" ], "score": [ 4, 3 ], "text": [ "1000 on junk food is faster however such a deficiency in calories would be a serious health risk.\n\n > Others say 100 calories of burgers and fries is VERY different from 100 calories of fruits and veggies\n\nThis is true, ...
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[ [], [] ]
1yz4ub
I'm searching for a book by one of the founding fathers.
It was a book that he wrote where he omitted everything with Jesus Christ being the son of god and rather shows him as just a person who wants to do good in the world. I don't know which founding father it is, what the name of his take on the story of Jesus is, or even if it's still in circulation, but I would like to ...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1yz4ub/im_searching_for_a_book_by_one_of_the_founding/
{ "a_id": [ "cfp4j1u" ], "score": [ 5 ], "text": [ "It sounds like you are talking about what is now commonly known as \"the Jefferson Bible.\" Jefferson called it *The Life and Morals of Jesus of Nazareth.* However, it isn't a book he wrote, in the sense of composing it. Rather, it is an edition ...
[]
[]
[ [ "http://americanhistory.si.edu/jeffersonbible/" ] ]
3rj0zz
is a strong us dollar good or bad for the economy?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/3rj0zz/eli5_is_a_strong_us_dollar_good_or_bad_for_the/
{ "a_id": [ "cwoglm4", "cwogm3s", "cwogwe7", "cwoorgf", "cwopdb5", "cwopk07", "cwosmkv", "cwoszy8", "cwp06ux", "cwp2l5u", "cwphhhh" ], "score": [ 161, 16, 3, 2, 2, 2, 2, 2, 5, 7, 2 ], "text": [ "Good for imports bad fo...
[]
[]
[ [], [], [], [], [], [], [], [], [], [], [] ]
ejvs9d
how come 500 million animals died in the australian fires?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/ejvs9d/eli5_how_come_500_million_animals_died_in_the/
{ "a_id": [ "fd202vv", "fd210jo" ], "score": [ 8, 2 ], "text": [ "They took the density of all animals over certain areas (an estimate) (not including bugs/insects) x area affected by the fires then they got to that number. The actual number might be much higher or much lower.\n\nHere's a ...
[]
[]
[ [ "https://sydney.edu.au/news-opinion/news/2020/01/03/a-statement-about-the-480-million-animals-killed-in-nsw-bushfire.html" ], [ "https://www.bbc.com/news/50986293" ] ]
31awv4
Are there any special meanings behind Royal Crown designs?
Do the gems, shapes, color have any significant meaning?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/31awv4/are_there_any_special_meanings_behind_royal_crown/
{ "a_id": [ "cq04frk", "cq09nyl", "cq0zxhr" ], "score": [ 3, 3, 2 ], "text": [ "I'd like to ask a specific question in relation to this, the Hungarian crown with its \"tilded\" cross, did that actually exist, and did it have any meaning?", "I think it depends on the crown. The ...
[]
[]
[ [], [ "http://en.wikipedia.org/wiki/Imperial_Crown_of_Austria#Description" ], [] ]
9c2eiu
how is an internal 3d representation of the video game world translated to what we see on screen?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/9c2eiu/eli5_how_is_an_internal_3d_representation_of_the/
{ "a_id": [ "e57jzvt", "e57l9y4", "e57siby" ], "score": [ 3, 13, 8 ], "text": [ "It’s usually done by multiplying together three different matrices. \nFirst a Model matrix which describes the orientation and translation of the object in relation to a fixed coordinate system.\n\nSec...
[]
[]
[ [], [], [] ]
5kbi6v
How did Beach Landings occur in Medieval Times?
I've often wondered how landings like these occurred. From as early as the Viking Raids to the start of the 16th century. In the movie Robin Hood (2010) at the final battle, you see a French invasion force rowing to the coastline in landing craft eerily similar to landing craft used during the Normandy landings. Obvi...
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/5kbi6v/how_did_beach_landings_occur_in_medieval_times/
{ "a_id": [ "dbmsyss", "dbn03uq" ], "score": [ 2, 15 ], "text": [ "Follow-up question, any examples of movies or television shows that have a realistic depiction of a medieval (or earlier) amphibious assault, assuming you agree with OP that *Robin Hood*'s scene was Hollywood rubbish?", ...
[]
[]
[ [], [ "http://www.yorku.ca/inpar/richard_of_holy_trinity.pdf&gt" ] ]
2i1a28
Is it more fuel efficient for a car to accelerate more before going up a hill or maintain a constant speed before and during the climb?
I believe constraints would be required. So, let's say I restrict my speeds to be in a certain range, for example: between 20mph and 40mph.
askscience
http://www.reddit.com/r/askscience/comments/2i1a28/is_it_more_fuel_efficient_for_a_car_to_accelerate/
{ "a_id": [ "ckxx9kk", "cky0l9x", "cky4nj2", "cky9m8l", "ckyb6sr", "ckybcdt", "ckyd5mj", "ckydvsr", "ckygo7n" ], "score": [ 123, 14, 2144, 5, 12, 3, 61, 2, 2 ], "text": [ "In order to maximize fuel efficiency, rather than keeping a co...
[]
[]
[ [], [], [ "http://pdf.cat.com/cda/files/2208232/7/leht8893-00.pdf" ], [], [ "http://en.m.wikipedia.org/wiki/Brake_specific_fuel_consumption" ], [], [], [], [] ]
nrpn5
Can two sound waves constructively interfere at an angle?
Say I had two speakers sitting at different corners of a triangle emmitting the same sound. Could they constructively interfere with one another to produce a louder sound at the third point? The soundwaves would be approaching eachother at like a 45 degree angle. edit: is there any way to test this in a home setup?
askscience
http://www.reddit.com/r/askscience/comments/nrpn5/can_two_sound_waves_constructively_interfere_at/
{ "a_id": [ "c3beh1h", "c3bf80c", "c3beh1h", "c3bf80c" ], "score": [ 2, 2, 2, 2 ], "text": [ "Yes. Such situations are common in first‐year physics problems.", "Get a used tube of wrapping paper. Xmas is over, it should be really easy to find. Have a friend sing a note...
[]
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[ [], [], [], [] ]
8j0jky
'Africans did not sell their own people into slavery' - how much of it is true?
I just read this text that says exactly what the title means. Is there anyone to confirm this or shed some light on this topic? Here's the source: _URL_0_
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/8j0jky/africans_did_not_sell_their_own_people_into/
{ "a_id": [ "dyw5x5m" ], "score": [ 46 ], "text": [ "Thats not a very academic source. The author doesnt cite any evidence of their claims, makes some very broad claims (an example being that non-african wars always resulted in a genocide of the conquered, whereas african wars did not), and beyond...
[]
[ "http://www.africaw.com/africans-did-not-sell-their-own-people-into-slavery" ]
[ [] ]
1ajfpg
how common were young people who behaved in a stereotypically hippie like way (I.E travling, free love, drug taking) in 1970 America?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1ajfpg/how_common_were_young_people_who_behaved_in_a/
{ "a_id": [ "c8y2a4j", "c8y5knz", "c8y5u3t" ], "score": [ 4, 4, 17 ], "text": [ "In Canada in 1970 it was quite common to see young people who were hippie like. It wasn't mainstream but certainly common place. After expo67,young canadians saw what the rest of the world had to offer...
[]
[]
[ [], [], [ "http://en.wikipedia.org/wiki/General_Social_Survey", "http://imgur.com/a/NuIEi", "http://sda.berkeley.edu/cgi-bin/hsda?harcsda+gss10" ] ]
qn2gx
why do laptops run demanding programs smoother on ac as opposed to battery power.
I've noticed that when I run games/music production software, on battery power, they run sluggishly. However, when I plug in the ac cord, the programs immediately run smoother. Why is this? Does the battery not give off sufficient power?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/qn2gx/eli5_why_do_laptops_run_demanding_programs/
{ "a_id": [ "c3yv1gk", "c3yvtau" ], "score": [ 8, 4 ], "text": [ "The people who design computers make them do lots of clever things to save power when they're running on battery power instead of AC. One of the things they do is run the processor more slowly, so that it uses less power. Ju...
[]
[]
[ [], [ "http://en.wikipedia.org/wiki/Dynamic_frequency_scaling" ] ]
9o3qak
Was Mao genuinely interested in hearing criticism during the Hundred Flowers Movement?
I'm working on my PhD in Chinese history. One of my Chinese colleagues mentioned the other day that he was taught in primary school that the Hundred Flowers Campaign was a trap designed by Mao to lure out rightist intellectuals who he already didn't trust. In all of my readings, I never came across this historiography ...
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/9o3qak/was_mao_genuinely_interested_in_hearing_criticism/
{ "a_id": [ "e7s0ksz" ], "score": [ 23 ], "text": [ "I want to start by saying that this is a complex topic, and I am by no means an expert on the matter. Feel free to disagree; we can examine the matter further together.\n\nIt's conventional wisdom that the Hundred Flowers Campaign (百花齊放、百家爭鳴) of...
[]
[]
[ [] ]
3sg7as
if a one time infection by certain viruses (e.g. chicken pox) usually leads to immunity, why can other viruses recur in the same person countless times?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/3sg7as/eli5_if_a_one_time_infection_by_certain_viruses/
{ "a_id": [ "cwwwrja", "cwwws9j", "cwwwtew", "cwwy47z", "cwwynv6" ], "score": [ 19, 2, 3, 6, 2 ], "text": [ "They can't, but what happens is that what we call the common cold for example isn't one virus. It's dozens and dozens of different strains of roughly the sam...
[]
[]
[ [], [], [], [], [] ]
15y7k5
What steps are taken after a period of hyperinflation to ensure that that no one who kept all of their physical money will suddenly be able more wealthy than they were before?
I think the type of economic situation that I'm referring to is what happened in early 1920's Germany. Out of this time I would always hear the anecdote that if you wanted a loaf of bread then you'd have to pay for it with a wheelbarrow full of money. I also heard that people would use their money for wallpaper, or jus...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/15y7k5/what_steps_are_taken_after_a_period_of/
{ "a_id": [ "c7qw1ss", "c7qw252", "c7qxo5a", "c7qxyby" ], "score": [ 9, 5, 3, 2 ], "text": [ "The old currency would be declared invalid and exchanged for a new one at some fixed rate. So people weren't walking around Germany with trillion banknotes that could actually be u...
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[]
[ [ "http://en.wikipedia.org/wiki/Hyperinflation_in_the_Weimar_Republic#Stabilization" ], [], [ "http://www.npr.org/blogs/money/2010/10/04/130329523/how-fake-money-saved-brazil" ], [] ]
3xukep
why are home games so important in sports, and why do analysts make a big deal when a team loses at home?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/3xukep/eli5_why_are_home_games_so_important_in_sports/
{ "a_id": [ "cy7vvqc", "cy7vwu4", "cy7x0yh", "cy80qc4", "cy8cvgj" ], "score": [ 2, 18, 4, 2, 2 ], "text": [ "I'm not an expert but here is my 2 cents. I can come up with two reasons;\n\nPlaying a home game, the crowd will most likely be in your favour. This is a hug...
[]
[]
[ [], [], [], [], [] ]
1hs8pf
If every light in America turned off at once, would we immediately see the milky way or would it take time for the light pollution to wear off?
askscience
http://www.reddit.com/r/askscience/comments/1hs8pf/if_every_light_in_america_turned_off_at_once/
{ "a_id": [ "caxdvjg", "caxdww6", "caxe63l", "caxer9t", "caxfb0s", "caxhabf" ], "score": [ 60, 58, 101, 10, 41, 2 ], "text": [ "Light travels at over 670 million miles per hour. It's fair to say that the glow would disappear instantly, just as it does when y...
[]
[]
[ [], [], [], [], [], [ "http://en.wikipedia.org/wiki/Milky_way#Appearance" ] ]
99uisb
how come there are still old us bills that look crisp, clean, and almost unused?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/99uisb/eli5_how_come_there_are_still_old_us_bills_that/
{ "a_id": [ "e4qjlvo", "e4qjnk1" ], "score": [ 4, 3 ], "text": [ "Issued doesn't mean it goes around alot. You can take a freshly printed bill and withdraw it from the bank and just never spend it. Some people keep an emergency stash of money in their home. They don't touch it for yea...
[]
[]
[ [], [] ]
57m7f1
the latest wikileaks email dump
[deleted]
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/57m7f1/eli5the_latest_wikileaks_email_dump/
{ "a_id": [ "d8t55zf" ], "score": [ 3 ], "text": [ "Long story short some key people in the Democratic party had their emails published publicly and what it showed was that the many in the media and the DNC have been in the tank for Hillary's campaign from the start. It shows what goes on behind ...
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[ [ "http://www.businessinsider.com/hillary-clinton-endorsements-newspaper-editorial-board-president-2016-2016-9/#the-new-york-times-our-endorsement-is-rooted-in-respect-for-her-intellect-experience-toughness-and-courage-over-a-career-of-almost-continuous-public-service-often-as-the-first-or-only-woman-in-the-are...
rldww
How do scientists go about directly measuring entropy?
I know entropy is a measure of disorder in a system, and it is dependent on temperature. It is in units of joules per kelvin. How are units like this correlated to the disorder of the system and what kind of experiments are used to determine levels of entropy?
askscience
http://www.reddit.com/r/askscience/comments/rldww/how_do_scientists_go_about_directly_measuring/
{ "a_id": [ "c46r8wz", "c46s9v9", "c46sp4m", "c46spn3" ], "score": [ 5, 2, 3, 2 ], "text": [ "I wrote [a brief PDF collecting ways to relate entropy and entropy changes to other, more easily measurable, thermodynamic quantities](_URL_0_). ", "Entropy cannot be measured....
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[ [ "http://john.maloney.org/Papers/Determining%20entropy%20%285-2-07%29.pdf" ], [], [], [] ]
1pvtx1
how some gifted humans are able to perform extremely difficult calculations in their head?
Today's Google Doodle is celebrating the birthday of Shakuntala Devi AKA "The human computer". from her wikipedia page: > *On June 18, 1980, she demonstrated the multiplication of two 13-digit numbers 7,686,369,774,870 × 2,465,099,745,779 picked at random by the Computer Department of Imperial College, London. She co...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1pvtx1/eli5_how_some_gifted_humans_are_able_to_perform/
{ "a_id": [ "cd6kuqx", "cd6ny5v" ], "score": [ 33, 3 ], "text": [ "Overly simple answer: A lot of math can be boiled down to simple procedures that the brain can more easily process. You already know a few of these tricks. One of the most basic is that when you multiply any whole number ...
[]
[]
[ [], [] ]
4hb2o3
how does high productivity mean lower unit costs?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/4hb2o3/eli5_how_does_high_productivity_mean_lower_unit/
{ "a_id": [ "d2or8jo" ], "score": [ 8 ], "text": [ "Pretend you need to earn $100 per day to live your life. \n\nIf you made 1 item a day, you'd have to sell that 1 item for perhaps $150, $50 for the materials, facilities, and other expenses, $100 for your labor.\n\nIf you were more productive, an...
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[ [] ]
69uerr
why is it so easy to fall asleep watching the tv but radio or simply waiting to fall asleep don't have the same effect?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/69uerr/eli5_why_is_it_so_easy_to_fall_asleep_watching/
{ "a_id": [ "dh9gkfu", "dh9h1p0", "dh9iiw9" ], "score": [ 2, 2, 6 ], "text": [ "Watching TV can help take your mind off the worries of the day. It takes your focus off the upcoming day, the stresses of the day you're wrapping up.", "i have always found this puzzling. I can neve...
[]
[]
[ [], [], [] ]
5vvg3e
how does getting rid of net neutrality improve competition in a way that benefits the consumer?
I've been seeing this argument from the dawn of time and never understood it.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5vvg3e/eli5_how_does_getting_rid_of_net_neutrality/
{ "a_id": [ "de579od", "de58p8b", "de5a919", "de5aau6", "de5d3d2", "de5fo07" ], "score": [ 15, 17, 9, 12, 3, 2 ], "text": [ "This question cannot be answered because the premise is false. It does not improve competition in a way that benefits the consumer.",...
[]
[]
[ [], [ "https://www.youtube.com/watch?v=wtt2aSV8wdw" ], [], [], [], [ "http://climateviewer.org/" ] ]
3bnkx3
What were some of the mathematical methods used before the discovery of calculus?
Surely they had to approximate derivatives and integrals for engineering applications before calculus was discovered and/or widely understood. What exactly were those methods, and how accurate were they compared to calculus?
askscience
http://www.reddit.com/r/askscience/comments/3bnkx3/what_were_some_of_the_mathematical_methods_used/
{ "a_id": [ "csos94k", "csp4p0d" ], "score": [ 2, 2 ], "text": [ " > Surely they had to approximate derivatives and integrals for engineering applications before calculus was discovered and/or widely understood.\n\nNope. Engineering as a mathematics-based profession post-dates calculus. ...
[]
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[ [], [] ]
19mdo5
what is the sequester and why is an issue right now? also, how can the us senate not have a budget 4 years in a row?
As an American living abroad, I haven't been following a ton of issues but I've been seeing this in the news and it seems pretty serious.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/19mdo5/what_is_the_sequester_and_why_is_an_issue_right/
{ "a_id": [ "c8pc6af", "c8pd437" ], "score": [ 5, 8 ], "text": [ "The sequesters are a series of cuts across the board of US spending that were designed to be particularly painful for both parties so that they would actually agree to compromise to a less painful deal that would cut spendin...
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[ [], [] ]
3jiwod
If planes flying in a V formation, like geese, save fuel, would this also be true for cars ?
C-17's flying in a V formation, like geese, is a current TIL saving 10% fuel = millions of dollars.
askscience
https://www.reddit.com/r/askscience/comments/3jiwod/if_planes_flying_in_a_v_formation_like_geese_save/
{ "a_id": [ "cupot4o", "cupqma0" ], "score": [ 10, 2 ], "text": [ "No.\n\nThe reason a V formation lowers drag for aircraft is [vortex shedding](_URL_0_) off the wings. Basically, it's a result of flow going around the wingtips resulting in a swirling air current. If another plane, bird, e...
[]
[]
[ [ "http://amasci.com/wing/lasrWing.gif" ], [ "https://en.wikipedia.org/wiki/Drafting_\\(aerodynamics\\)#Motorsport" ] ]
11wx2v
What would a laser "gun" sound like? What about other "future" weapons like plasma guns, photon cannons, energy blasts etc.?
askscience
http://www.reddit.com/r/askscience/comments/11wx2v/what_would_a_laser_gun_sound_like_what_about/
{ "a_id": [ "c6qa8ea", "c6qa9p8" ], "score": [ 2, 3 ], "text": [ "A simple 'photon cannon' exists in your home right now (I'm guessing), and is usually called a torch. What noise does it make when you switch it on?", "Laser guns would likely not make a sound. Maybe a electrical hum of ...
[]
[]
[ [], [] ]
1x56eb
Do the Maori people have oral histories describing their arrival in New Zealand?
It's my understanding that the Maori arrived in New Zealand sometime around 1200/1300 AD. This isn't a (relatively) long time before their first contact with Europeans in 1642 AD. There are many cultures with oral histories going back 300 years; so do the Maori have one? Is there any information on their arrival from t...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1x56eb/do_the_maori_people_have_oral_histories/
{ "a_id": [ "cf89mhd", "cf8bglj", "cf8busj" ], "score": [ 7, 7, 31 ], "text": [ "You should ask this in the mega thread :) _URL_0_", "Ok, I agree with /u/TasfromTAS because /u/CrossyNZ's answers are amazing - you definitely want to get his input. But in the spirit of pointing ...
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[]
[ [ "http://www.reddit.com/r/AskHistorians/comments/1x4mnd/waitangi_day_new_zealand_history_megathread/" ], [ "http://en.wikipedia.org/wiki/M%C4%81ori_migration_canoes", "http://en.wikipedia.org/wiki/Kupe" ], [ "http://www.reddit.com/r/AskHistorians/comments/1x4mnd/waitangi_day_new_zealand_his...
5vikzn
how come we can capture video in slow motion, but not sound?
[deleted]
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5vikzn/eli5_how_come_we_can_capture_video_in_slow_motion/
{ "a_id": [ "de2bc0n" ], "score": [ 6 ], "text": [ "We don't capture video in slow motion. We capture video in real life speed. However the video camera has such a high frame per second recording that if we slow down the footage your eyes still can't see the individual frames and it looks like a (...
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[ [] ]
5r5syl
[Med] Is there a functional difference between "fresh" blood and "Stored" blood?
I had this idea earlier, instead of having lots of people donate blood once, and then store that blood, and risk transporting it and have it go bad RELATIVELY quickly, why not have healthy individuals in hospitals, whose sole purpose is to give ""replaceable" blood and body parts? Other than the fact that you would no...
askscience
https://www.reddit.com/r/askscience/comments/5r5syl/med_is_there_a_functional_difference_between/
{ "a_id": [ "dd4y1cy", "dd6gmc5" ], "score": [ 15, 5 ], "text": [ "1. Stored blood has things added to it so it stays fresh and lasts longer, don't know the exact time frame but it does store for a while\n\n2. Having someone wait around at the hospital all day hoping for someone to need th...
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[ [], [] ]
yc95i
What sort of sports did people in the era you study play?
I thought this could be a cool discussion to have. We can talk about all the interesting sports people in our focus played. I will put mine in the comments.
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/yc95i/what_sort_of_sports_did_people_in_the_era_you/
{ "a_id": [ "c5u8zeq", "c5ubs0y", "c5ui7yy", "c5uiw5c" ], "score": [ 6, 6, 4, 2 ], "text": [ "Ullamaliztli was one of the most popular games played by Aztec peoples. It involved a hard rubber ball. It was one of the first things set up in a new settlement and so it is surmi...
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[]
[ [], [ "http://en.wikipedia.org/wiki/Andr%C3%A9s_Escobar", "http://en.wikipedia.org/wiki/Dennis_Mart%C3%ADnez" ], [ "http://chawedrosin.files.wordpress.com/2009/09/bruegel21.jpg" ], [ "http://onlyagame.wbur.org/2012/05/26/monrovian-baseball" ] ]
1q93nc
If you were floating out in deep space, would you get hotter or colder?
By deep space, I mean nearly no other matter around you. Since there's nothing for you to actually give heat to (like an atmosphere), would you actually lose any heat to the surrounding system? Would your body temperature rise as a result of this? Or, since the surrounding temperature is so low, would you quickly beco...
askscience
http://www.reddit.com/r/askscience/comments/1q93nc/if_you_were_floating_out_in_deep_space_would_you/
{ "a_id": [ "cdah62a" ], "score": [ 7 ], "text": [ "You would get colder. There are three types of heat transfer, conduction, convection and radiation (_URL_0_). You are correct that in space there is nothing to transfer the energy to, so the first two mechanisms contribute nothing. However you ca...
[]
[]
[ [ "http://en.wikipedia.org/wiki/Heat_transfer#Mechanisms", "http://en.wikipedia.org/wiki/Black-body_radiation#Stefan.E2.80.93Boltzmann_law", "http://www.fitday.com/fitness-articles/fitness/weight-loss/how-to-calculate-calories-burned-while-sleeping.html#b", "http://www.wolframalpha.com/input/?i=%28s...
1gntpk
How did someone's social class and wealth in Britain affect their experience of rationing during and after World War Two?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1gntpk/how_did_someones_social_class_and_wealth_in/
{ "a_id": [ "cam0l5y" ], "score": [ 28 ], "text": [ "During the Second World War, working-class Britons ate better than they had in a long time. Rationing was a really good thing for them, because it provided a baseline of foods and nutrients that the market generally did not provide in the 1930s....
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[ [] ]
1jakrw
How fast would a fully-fueled Saturn V rocket be able to propel itself without any Apollo spacecraft payload?
I was curious to find out what the final Earth-relative velocity of the third stage would be if it were tasked with lofting only itself into space (no CSM/Service or Lunar module on board). I'd imagine the total Delta-V would be quite ridiculous without 120,000 kg of mass on top.
askscience
http://www.reddit.com/r/askscience/comments/1jakrw/how_fast_would_a_fullyfueled_saturn_v_rocket_be/
{ "a_id": [ "cbcsfp1" ], "score": [ 6 ], "text": [ "Well the S-IVB has a dry mass of about 10 tons, and fuelled mass of 119.9 tons. The CM/SM had a total mass of 30 tons and the LM had a mass of 14.5 tons for a total of about 45.5 tons of Apollo spacecraft payload.\n\nThe specific impulse of the S...
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[ [] ]
18rgkz
If we breathe in O2 and exhale CO2, then do we lose mass just by breathing?
Assuming we inhale and exhale equal parts O2 and CO2, that is.
askscience
http://www.reddit.com/r/askscience/comments/18rgkz/if_we_breathe_in_o2_and_exhale_co2_then_do_we/
{ "a_id": [ "c8hb3qk", "c8hb5oq", "c8hc8o5", "c8hcrv3", "c8hflgs", "c8hg6nt", "c8hm3b9", "c8hms86" ], "score": [ 410, 22, 24, 6, 95, 9, 5, 4 ], "text": [ "Yup! You get the mass back by eating.", "Exactly. CO2 is a product of cellular res...
[]
[]
[ [], [], [], [], [ "http://emedicine.medscape.com/article/2009552-overview?pa=SH1%2Fp4MzEtsOAjWKoDJnaIgC3pqgcILHwghXr3NNKeRTmFjWWWTQRKE0DtcvZLj1iNuIoqQJ0g5kRPxncKJfig%3D%3D", "http://en.wikipedia.org/wiki/Respiratory_quotient" ], [ "http://youtu.be/lL2e0rWvjKI" ], [], [] ]
9ayi82
human skin only varies from a light cream to a dark brown. is there a particular reason that there are no other variations of skin colour? i.e blue, red, green, etc.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/9ayi82/eli5_human_skin_only_varies_from_a_light_cream_to/
{ "a_id": [ "e4yyton", "e4z9ksr", "e4zb8oc" ], "score": [ 57, 5, 8 ], "text": [ "Other colors ARE possible, through genetic mutations. Look up the Kentucky Blue People.\n\nBasically, remember that for something to change biologically requires 2 things: a mutation, and then for that...
[]
[]
[ [], [], [] ]
2iv1ij
Best book for Central American wars during the 20th century?
Wondering if anyone has any recommendations for books coving the Central American crises from 1960 to 1996 in Guatemala, El Salvador and Nicaragua, in addition to their origins and aftermath. More or less, I'm curious about the nature of the conflicts and American involvement in them, particularly the exploits of the ...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/2iv1ij/best_book_for_central_american_wars_during_the/
{ "a_id": [ "cl5z1nd" ], "score": [ 2 ], "text": [ "I'm currently working on an undergraduate research project on the Guatemalan Civil War from 1960 to 1976 or so. \nOne particularly useful primer has been Timothy P. Wickham-Crowley's Guerillas and Revolution in Latin America. \nHe notes marked si...
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[ [] ]
6bvpg7
What is the oldest historical artefact still in use today?
[deleted]
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/6bvpg7/what_is_the_oldest_historical_artefact_still_in/
{ "a_id": [ "dhq5juw", "dhqk1zt", "dhqnu7k" ], "score": [ 16, 9, 3 ], "text": [ "What precisely do you mean by \"artefact\" and \"in use\"?", "That's a poorly phrased question. At least without robust definitions of “artefact” “in use” and “historical”. \n\nAny precise answer i...
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[ [], [], [] ]
vmtmn
How strong is an electromagnet when it's not on?
I work with a 3T magnet. It still has some magnetic field present even when there's no current turned on, right? How strong is that field?
askscience
http://www.reddit.com/r/askscience/comments/vmtmn/how_strong_is_an_electromagnet_when_its_not_on/
{ "a_id": [ "c55tu6n" ], "score": [ 3 ], "text": [ "It really depends on the magnet. From the sounds of it, you have a magnetic core wrapped in wire? In that case the iron core still has a magnetic field. Is it an MRI magnet? Is that case it should probably never be turned off" ] }
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[ [] ]
33mzwf
my company's 401k, specifically the part where i become "fully vested" after a few years.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/33mzwf/eli5my_companys_401k_specifically_the_part_where/
{ "a_id": [ "cqmfrx4", "cqmftlt", "cqmfvgj" ], "score": [ 3, 2, 9 ], "text": [ "So you put in money into your 401(k)... that money is yours.\n\nBut in your case, your company also puts in extra money that is not yours, presumably through \"matching\". That money is *not* your mone...
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[]
[ [], [], [] ]
aqz2wy
how does youtube's algorithm work?
[deleted]
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/aqz2wy/eli5_how_does_youtubes_algorithm_work/
{ "a_id": [ "egjnlmk" ], "score": [ 2 ], "text": [ "YouTube uses machine learning to determine the best videos to recommend to you, based on several parameters, such as what you liked and disliked, view time, and probably other factors as well. Try watching a channel you're not subscribed to for a...
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[ [] ]
29zhpf
why does my body "get used to" cold water, but not cold air?
I can swim in a cold lake for a few minutes and get so used to the water that it may as well be warm. Why doesn't this work with cold air? I don't "get used to it" when I stand outside and it's chilly. Is it biology? Different response by the skin? Thanks in advance for any answers. :)
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/29zhpf/eli5_why_does_my_body_get_used_to_cold_water_but/
{ "a_id": [ "ciq2dxl", "ciq4cxj", "ciq5769" ], "score": [ 7, 9, 2 ], "text": [ "Your body has a system (the limbic system to be precise) that, when you're cold, compresses the capillaries in your extremities that pushes the blood to your torso and head in order to keep your vital o...
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[ [], [], [] ]
1b2c39
what happened to all the giant land animals?
[A TIL today](_URL_0_) talked about a now extinct 10 foot tall great ape. There were also links to now extinct giant birds and sloths, 2, 5, or even 10 times larger than what exists today. What happened to all these big creatures (don't forget dinosaurs)? Are we evolving to be smaller?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1b2c39/eli5_what_happened_to_all_the_giant_land_animals/
{ "a_id": [ "c92xct6", "c92xffw" ], "score": [ 3, 4 ], "text": [ "Dinosaurs were doing great until the mass extinction brought on by an asteroid.\n\nSince then, millions of animal species of all shapes and sizes have come into being and gone extinct. Many of these species died out for rea...
[]
[ "http://www.reddit.com/r/todayilearned/comments/1b1dro/til_there_is_an_extinct_genus_of_ape/" ]
[ [], [] ]
xo38t
How long have people been saying "good morning" throughout history?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/xo38t/how_long_have_people_been_saying_good_morning/
{ "a_id": [ "c5o44zl", "c5o4pfc", "c5ogw5q" ], "score": [ 6, 9, 4 ], "text": [ "Hmm, good question. Don't know the answer but for sure, at least since around 600 CE (in the Arabian peninsula, anyway)", "Old English for good morning is goodne morgen, so people have been saying i...
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[]
[ [], [], [] ]
8pvbu5
Does a video of an empty, stationary room have a smaller file size than a video of things moving?
askscience
https://www.reddit.com/r/askscience/comments/8pvbu5/does_a_video_of_an_empty_stationary_room_have_a/
{ "a_id": [ "e0easjv", "e0eayj6", "e0ehqg5" ], "score": [ 7, 23, 3 ], "text": [ "Totally depends on the compression algorithm being used to compress the video. Also depends on what's in the room.\n\nEven if you're talking HEVC compression, it can be tuned in many ways, to optimize...
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[]
[ [], [], [] ]
5eqb13
During the 1960 U-2 incident, what kind of interrogation techniques did the Soviets use on Francis Gary Powers, the captured pilot?
The Wikipedia article is extremely vague. Was he tortured? Drugged? What sort of interrogation techniques were in use at the time?
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/5eqb13/during_the_1960_u2_incident_what_kind_of/
{ "a_id": [ "daevy0p" ], "score": [ 6 ], "text": [ "I'm no expert, but a basic response to your questions can be had.\n\n[Accounts](_URL_3_) agree that there was no physical torture; but interrogations were long and harsh(11+ hrs/day for 61 days leading up to his show trial) and included death thr...
[]
[]
[ [ "http://adst.org/2013/01/the-show-trial-of-u-2-pilot-francis-gary-powers/", "https://themoscowtimes.com/articles/the-truth-about-gary-powers-a-cold-war-hero-12411", "http://rbth.com/articles/2012/06/15/silver_medal_for_years_spent_in_a_soviet_prison_15884.html", "http://www.smithsonianmag.com/smit...
6f9012
raster over vector based graphics?
Why is Raster the most common graphics format? I would think only having to process the changing parts of a screen would be less demanding than generating a whole screen constantly
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/6f9012/eli5_raster_over_vector_based_graphics/
{ "a_id": [ "dige1nl" ], "score": [ 2 ], "text": [ "Getting your display to show something involves a number of layers, each of them doing their own thing.\n\nThe display itself is rasters because that's the physical construction - you have LCD laid out in a rectangular grid. It directly renders ...
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[ [] ]
m7yx1
the market scene in "trading places"
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/m7yx1/eli5_the_market_scene_in_trading_places/
{ "a_id": [ "c2yugi8", "c2yujjn", "c2yum1b", "c2yuvjq", "c2yw8h0", "c2ywkal", "c2yxfzt", "c2yugi8", "c2yujjn", "c2yum1b", "c2yuvjq", "c2yw8h0", "c2ywkal", "c2yxfzt" ], "score": [ 62, 4, 7, 3, 2, 5, 4, 62, 4, 7, 3, ...
[]
[]
[ [], [ "http://www.investopedia.com/terms/c/commodityfuturescontract.asp#axzz1dLia5el1" ], [], [ "http://www.wisebread.com/explaining-the-climax-scene-of-trading-places" ], [], [], [ "http://www.reddit.com/r/explainlikeimfive/comments/k2vdv/eli5_at_the_end_of_the_movie_trading_places_what...
3qwcga
Euler's identity: Huge coincidence or deep connection?
So we've all heard of the famous expression that relates five of some of the most important numbers in all of mathematics: *e^iπ*+1=0. I'm just trying to wrap my head around what this identity means and how it is possible. I understand the derivation for it, but what I don't get is why all these numbers are related. H...
askscience
https://www.reddit.com/r/askscience/comments/3qwcga/eulers_identity_huge_coincidence_or_deep/
{ "a_id": [ "cwj5nkm", "cwj6amh", "cwj9aot", "cwjj4gl" ], "score": [ 35, 19, 15, 3 ], "text": [ "À more insightful derivation of the full identity, (e^ix = cos(x) + isin(x) ) \n\nI'm on a train so I can't do the full thing comfortably but I will give the highlights and add ...
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[ [], [ "https://www.reddit.com/r/askscience/comments/voqmi/how_exactly_can_eipi_1/c56arkw" ], [], [ "https://postformalism.wordpress.com/2015/04/22/eulers-formula/" ] ]