q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
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1akcbu | what is this vault everyone is talking about? did i miss something? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1akcbu/eli5_what_is_this_vault_everyone_is_talking_about/ | {
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"guy found a safe in his friends basement, that used to be owned by a drug gang, asked reddit for advice on how to find out what's inside.\n\nOP has yet to deliver.",
"Dude recently moved in a house previously owned by dr... | [] | [] | [
[],
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"http://reddit.com/r/whatsinthisthing"
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145os8 | Why does it seem that revolutions break out in waves (eg. 2011, 1989, 1968, 1848)? | When revolution was at in the Middle East and North America last year, it wasn't hard at all to find commentators compare the Arab Spring to the EU austerity riots or the Occupy movement, or even historical revolutions like Europe's Revolutions of 1848. If you want to be even broader, the American, French, Haitian, and... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/145os8/why_does_it_seem_that_revolutions_break_out_in/ | {
"a_id": [
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"text": [
"Revolutions are usually the result of the break down of a given social or political consensus, which in turn is usually butressed by certain economic conditions. This consensus can break down for any number of reasons. Ho... | [] | [] | [
[],
[
"http://m.financialsense.com/contributors/russ-winter/food-prices-riots-civil-wars"
]
] | |
2e8vqg | what causes people (recently highlighted young muslims) to become radicalized? | What is it that is so appealing that would cause them to leave what they grew up with and devote themselves to a life of such evil? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2e8vqg/eli5what_causes_people_recently_highlighted_young/ | {
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"text": [
"Well, to give you the ELI5 answer it would be education. There is a lack of education in the Middle East, which in turn affects the income of the average person. Eventually, when you're stuck in poverty... | [] | [] | [
[],
[],
[
"http://www.youtube.com/watch?v=kUEGHdQO7WA"
]
] | |
ks03m | How long would it take, in SUBJECTIVE time, travelling at just below the speed of light (say, 299,000 km/s) to reach Alpha Centauri? | Which is to say, taking into account time dilation. It's about four years away from the point of view of a stationary observer, but how long would the man on the spaceship feel the journey lasting? Hours? Days? Months?
What about the nearest possibly inhabitable planet? | askscience | http://www.reddit.com/r/askscience/comments/ks03m/how_long_would_it_take_in_subjective_time/ | {
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"... | [] | [] | [
[],
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"http://www.wolframalpha.com/input/?i=plot+4*%28sqrt%281-b^2%29%29+b%3D0..1"
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ndnm7 | What would happen if we put tons of radioactive waste on the Sun? | Sending it up there, political and economical issues aside.
Would the sun disperse the junk and would it reach us somehow? Would it mess with the sun in other ways? | askscience | http://www.reddit.com/r/askscience/comments/ndnm7/what_would_happen_if_we_put_tons_of_radioactive/ | {
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"text": [
"nope. 'a drop in the ocean' wouldn't even do it justice.",
"To put this in perspective, the sun is over 300,000 times more massive than the earth.\n\nIf we shot the *entire ear... | [] | [] | [
[],
[],
[],
[]
] | |
6gmv0w | Was there a Tsarist secret police? What was the transition from the Cheka to the KGB? How much continuity has there been throughout the history of Russian espionage services, in general? | Edit: Related: if there wasn't a Tsarist secret police, did the Cheka inspire Chekism or did Chekism inspire the Cheka? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6gmv0w/was_there_a_tsarist_secret_police_what_was_the/ | {
"a_id": [
"dirl0ri",
"dirmju5",
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],
"score": [
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19,
6
],
"text": [
"Significant state censorship and surveillance followed the failed 1825 uprising known as the Decembrist movement. Tsarist Russia, by the late nineteenth century, had a secret police force called the _... | [] | [] | [
[],
[
"https://books.google.ca/books?id=6BAWCgAAQBAJ",
"https://etd.ohiolink.edu/!etd.send_file?accession=ohiou1398772391",
"https://books.google.ca/books?id=4eSR1rHg5_YC",
"https://en.wikipedia.org/wiki/Cheka",
"https://books.google.ca/books?id=9TWUAQ7Xof8C",
"https://en.wikipedia.org/wik... | |
2nk3ap | what is the difference between the european union and the european commission and the european community? | Can someone please explain what the difference is between the European Union and the European Commission and the European Community? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2nk3ap/eli5_what_is_the_difference_between_the_european/ | {
"a_id": [
"cmeb079",
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"score": [
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"text": [
"The European Union (EU) is a group of 25 countries that have signed various treaties giving them close political and economic ties.\n\nThe European Community is an older name for the same thing.\n\nThe European Commission is... | [] | [] | [
[],
[]
] | |
eveqy1 | when we look at stars in the sky that are light years away, are the stars there at the moment we look, or are we looking at a years-old after image? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/eveqy1/eli5_when_we_look_at_stars_in_the_sky_that_are/ | {
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"text": [
"Simply, yes - we're seeing stars after the light has travelled all the way to us. Ten light years isn't that far (space-wise) so some o... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | ||
wfv4a | Is their a psychological or physical benefit to tennis players who "moan", "groan" or scream every time they hit the ball? | I was visiting my grandma the other day. While watching tennis I noted how some players "moan","groan", or scream with every hit they give. It annoyed me terribly so I asked my grandma (who watches a lot of tennis) why they do it and she couldn't give me answer. She did, however, note that it only started a couple of y... | askscience | http://www.reddit.com/r/askscience/comments/wfv4a/is_their_a_psychological_or_physical_benefit_to/ | {
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"score": [
36,
13,
3,
2,
8
],
"text": [
"Comming from a martial arts background where we scream at the end of some of our techniques, here's why we do it:\n\n1) Psychological - anything that distr... | [] | [] | [
[],
[
"http://www.livescience.com/10772-unnh-grunting-tennis-players-edge.html"
],
[
"http://www.amsciepub.com/doi/abs/10.2466/pms.1999.89.1.233"
],
[],
[]
] | |
1m0f5s | Did women of the renaissance have a renaissance? | Although they were allowed to be educated, did they get better social status? And most of all, did she have a renaissance? (I would prefer an argument against the fact that they had a renaissance but just give me everything.) | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1m0f5s/did_women_of_the_renaissance_have_a_renaissance/ | {
"a_id": [
"cc4q32v"
],
"score": [
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"text": [
"In my very humble opinion, the question is ill posed.\n\nThe *renaissance* is not a renaissance of man. It refers to the rebirth of interest in concepts of Antiquity, and encompasses changes and new ideas in science, society and art. It is descri... | [] | [] | [
[]
] | |
f283op | how are structures able to be built such as oil rigs or bridges where the foundations are hundreds of meters deep in water? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f283op/eli5_how_are_structures_able_to_be_built_such_as/ | {
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"score": [
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"text": [
"oops didn't realize oil rigs float",
... | [] | [] | [
[],
[],
[],
[
"https://www.cbc.ca/news/canada/newfoundland-labrador/hebron-oil-platform-leaving-bull-arm-1.4144886"
],
[],
[],
[],
[
"https://en.m.wikipedia.org/wiki/Troll_A_platform"
],
[
"https://en.m.wikipedia.org/wiki/Troll_A_platform"
],
[]
] | ||
5rfk0v | why is it called "latin" america when spain/portugal are the biggest european influences to the region? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5rfk0v/eli5_why_is_it_called_latin_america_when/ | {
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"text": [
"Spain, Portugal, France and Italy(and a few other minor countries) make up Latin Europe. The all speak romance languages which evolv... | [] | [] | [
[],
[],
[],
[],
[],
[
"https://en.wikipedia.org/wiki/Latin_America#Origin"
]
] | |
2tye40 | why do people rub their faces when they are tired? | It feels good, but why? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2tye40/eli5_why_do_people_rub_their_faces_when_they_are/ | {
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[],
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[
"http://en.wikipedia.org/wiki/Oculocardiac_reflex"
],
... | |
2whm3l | why don't television shows and movies show male genetalia as much as they do female genetalia? [nsfw] | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2whm3l/eli5_why_dont_television_shows_and_movies_show/ | {
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"score": [
29,
2,
3,
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4,
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],
"text": [
"You don't see pussies, you don't see dick. \nYou'll see both topless, and the ass of both.",
"Men will tune in more if theres boob... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | ||
1i0x5z | Can the effect of semantic satiation occur in things other than words? | Semantic satiation is when you repeat a word over and over until it loses meaning and becomes strange to you. Can one do this with something other than a word? I find if I just continuously think about, for example, a family member, they start to just seem strange, meaningless, and different. It's very unsettling and s... | askscience | http://www.reddit.com/r/askscience/comments/1i0x5z/can_the_effect_of_semantic_satiation_occur_in/ | {
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"score": [
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"text": [
"Maybe this is too far off topic, but it's reminiscent of the way we think about cliches and colloquialisms. If you hear a phrase repeated to you throughout your lifetime, you may s... | [] | [] | [
[],
[
"http://www.wjh.harvard.edu/~wegner/seed.htm",
"http://www.wjh.harvard.edu/~wegner/ip.htm"
],
[],
[]
] | |
369unt | why don't women ever have "butt-chins"? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/369unt/eli5_why_dont_women_ever_have_buttchins/ | {
"a_id": [
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"text": [
"Women do have chin clefts. I'm not sure why you think they don't. It happens.\n\n[Here is incredibly famous actress Sandra Bullock for one such example.](_URL_0_)\n\nYou can Google Image Search \"Woman Chin Cleft\" to see plenty more examples. It... | [] | [] | [
[
"http://media.celebrity-pictures.ca/Celebrities/Sandra-Bullock/Sandra-Bullock-53.JPG"
]
] | ||
67x0n1 | why did people use to pickle vegetables to preserve them? | Why did we do it? What are the processes that turn pickling a viable way of food preservation? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/67x0n1/eli5_why_did_people_use_to_pickle_vegetables_to/ | {
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"text": [
"Because that was the only way they had to preserve vegetables. When growing your own vegetables, you have to pick the vegetables when they're ready, and vege... | [] | [] | [
[],
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[]
] | |
4kifbl | why can't helicopters deposit large oxygen bottles strategically on mt. everest or pick up people in trouble by harness? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4kifbl/eli5_why_cant_helicopters_deposit_large_oxygen/ | {
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"text": [
"The air pressure at the top of Mt Everest (29,000ft) is only about 1/3 as much as at sea level so your helicopter can only generate 1/3 of the lift. In addi... | [] | [] | [
[],
[],
[],
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] | ||
4b9c4i | gear mechanics? | Hi, without being an engineer I may not be able to understand how 2 gears fit together.
I've been playing in this "algodoo" physics software and I'm trying to understand basic mechanics of 2 gears.
The gears I have going at the moment, fit together for a few rotations but then start skipping a tooth and jam up..
I goo... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4b9c4i/eli5_gear_mechanics/ | {
"a_id": [
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"score": [
5,
3
],
"text": [
"To ensure proper tooth mating, your \"diametral pitch\" on both gears has to match. Read [this](_URL_0_) for a technical brief if you want to know more.",
"_URL_0_\n\nHere is a link to a gif that I think will answer a l... | [] | [] | [
[
"https://www.bostongear.com/pdf/gear_theory.pdf"
],
[
"https://en.m.wikipedia.org/wiki/Involute_gear"
]
] | |
2ffrof | why can a baby scream endlessly for hours on end while an adult loses their voice after a short period? | I have a 2 month old colicky baby.
Why is it that when I go to a concert and cheer/scream a bit for less than an hour I lose my voice, yet my child can scream until they make me deaf - FOR HOURS - and it's nothing to them? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ffrof/eli5_why_can_a_baby_scream_endlessly_for_hours_on/ | {
"a_id": [
"ck8svbo",
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"score": [
32,
5
],
"text": [
"It is because babys use the full potential of their lungs - kind of like opera singers. That way they don't Stress their vocal cords that much. We as adults don't do that anymore, our breathing is much more shallow, so we h... | [] | [] | [
[],
[]
] | |
14kpyx | What would happen to a small piece of neutron star matter if you were able to remove it from the star and place it alone in space? | askscience | http://www.reddit.com/r/askscience/comments/14kpyx/what_would_happen_to_a_small_piece_of_neutron/ | {
"a_id": [
"c7e1801",
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"score": [
3,
2
],
"text": [
"The star matter stays so dense due to the immense gravity. If you plucked a chunk out and placed it into space, I bet it would explode rather violently. I'm no scientist, just dig physics, so don't take my word for gospel... | [] | [] | [
[],
[]
] | ||
57em5n | how does the lever, one of 6 simple machines, work? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/57em5n/eli5_how_does_the_lever_one_of_6_simple_machines/ | {
"a_id": [
"d8rc4fj"
],
"score": [
2
],
"text": [
"A first class lever trades range of motion for force, second and third class levers the opposite."
]
} | [] | [] | [
[]
] | ||
2ydk2q | History teachers of reddit, I have a question... | Do you enjoy what you do? I love history (I'm 15) and I've aced every test. I'm seriously considering going to university and training to become a history teacher. I have a few questions, if you could answer any I'd be so grateful:
* Do you enjoy it?
* What grades do you need to get into a university? (I know every... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2ydk2q/history_teachers_of_reddit_i_have_a_question/ | {
"a_id": [
"cp8olku"
],
"score": [
17
],
"text": [
"It depends very much on the class. Mostly I TA sections for large (500+) survey lectures (I'm scheduled to teach my second class as instructor this summer - yay!); I don't know if you have those in Europe. They usually fill a GER, and that mea... | [] | [] | [
[]
] | |
6p8x7m | why do some sound systems not hurt your ears at high volume levels? | [Specifically I'm talking about the large rigs used in club, rave and even gig environments - as opposed to home systems]
Basically I've noticed two types of experiences that you can have with sound on nights out, the second being much more delightful but at the same time harder to come across.
**1) Everyday, *Normi... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6p8x7m/eli5_why_do_some_sound_systems_not_hurt_your_ears/ | {
"a_id": [
"drkv4er"
],
"score": [
2
],
"text": [
"100% deaf here, and the loudest volumes possible do not hurt my ears but they hurt my eyes, and makes the hair inside my ears itchy.\n\nLike putting head next to speaker."
]
} | [] | [] | [
[]
] | |
5mub22 | What would William Shakespeare's (~1564 - 1616) education have entailed? | [Inspired by an image on r/funny](_URL_0_), I became curious, as he is a major part of our education for literature, just what would Shakespeare's educational studies look like? Would he be reading classic Greek and Latin texts such as Antoninus Liberalis's *Metamorphoses* or something more English like Chaucer's *Can... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5mub22/what_would_william_shakespeares_1564_1616/ | {
"a_id": [
"dc72b7y"
],
"score": [
7
],
"text": [
"Stand back, finally an r/askhistorians question I am qualified to answer!\n\nShakespeare is often depicted as uneducated, but we have to understand what that means in context. Many literary figures of the day were Oxford or Cambridge graduates ... | [] | [
"https://np.reddit.com/r/funny/comments/5mr6ws/shakespeare_in_school/?ref=share&ref_source=link"
] | [
[]
] | |
u0jun | Are the number of biological discoveries increasing or decreasing? | I often think back to the turn of the 20th century when information and transportation had finally allowed for the scientific community to begin to discover, catalogue, and study new species from unheard of corners of the planet. I wonder what it must have been like discovering species that must have seemed so alien al... | askscience | http://www.reddit.com/r/askscience/comments/u0jun/are_the_number_of_biological_discoveries/ | {
"a_id": [
"c4rbp7b"
],
"score": [
4
],
"text": [
"Even if you only categorize biological discoveries as finding new species, there is so much in the ocean, and still some in jungles we have likely not discovered yet.\n\nHowever, to classify biological discoveries as finding new species would be ... | [] | [] | [
[]
] | |
11jcmv | What happens to the umbilical cord when twins, triplets, etc. are formed? | Does the umbilical cord split with them? How does that whole part really work. | askscience | http://www.reddit.com/r/askscience/comments/11jcmv/what_happens_to_the_umbilical_cord_when_twins/ | {
"a_id": [
"c6n32pu"
],
"score": [
4
],
"text": [
"It depends on what kind of twin it is. With fraternal (dizygotic) twins, each fertilized egg produces its own placenta (and umbilical cord), and thus each twin is completely independent of the other. With identical (monozygotic) twins, it depen... | [] | [] | [
[
"http://info.med.yale.edu/obgyn/kliman/placenta/twins/twindiagrams/R%26M%20Placenta.jpg",
"http://en.wikipedia.org/wiki/Mono_mono_twin"
]
] | |
35gav4 | if regular sun exposure increases your chance of skin cancer, why do people in warmer states generally have lower rates of skin cancer? | _URL_0_ | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/35gav4/eli5_if_regular_sun_exposure_increases_your/ | {
"a_id": [
"cr44wnm"
],
"score": [
3
],
"text": [
"Those statistics don't take into account racial distributions in the statistics. People with increased skin pigmentation have lower rates of skin cancer.\n\nBasically, the whiter the state, the higher the incidence of skin cancer. "
]
} | [] | [
"http://www.cdc.gov/cancer/skin/statistics/state.htm"
] | [
[]
] | |
b65omj | What makes metals like iron melt when exposed to very high tenperature? | askscience | https://www.reddit.com/r/askscience/comments/b65omj/what_makes_metals_like_iron_melt_when_exposed_to/ | {
"a_id": [
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"text": [
"Temperature is a representation of the kinetic energy within the molecules of a given material. In other words, temperature is a way for us to quantify how fast the molecules in an object are travelling - longitudinally (side to side), rotational... | [] | [] | [
[]
] | ||
489dav | How was stone transported all the way from Egypt to Rome? | [This](_URL_0_) video states that the Parthenon in Rome is constructed of granite transported all the way from Egypt. How was this accomplished? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/489dav/how_was_stone_transported_all_the_way_from_egypt/ | {
"a_id": [
"d0i0dm6"
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"text": [
"The Parthenon is in Athens, not Rome. The Pantheon, built by Marcus Agrippa is in fact built of granite, although I don't know whether it's Egyptian stone or not, though I have no reason to doubt it (there were major granite quarries in Egypt tha... | [] | [
"https://youtu.be/e_phjB19ZEg?t=586"
] | [
[]
] | |
ivkrm | What would be the best method for us to use if we wanted to send and receive information across vast interstellar distances? | Is it possible to create, say, a radio wave laser? How far could such a laser reach though space? I've heard that even lasers do spread out a bit.
Would a radio wave laser be our best option for interstellar communication, or would it be better to transmit with something like the [Arecibo Observatory?](_URL_0_) I hear... | askscience | http://www.reddit.com/r/askscience/comments/ivkrm/what_would_be_the_best_method_for_us_to_use_if_we/ | {
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"c26z8jd",
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"score": [
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"text": [
" > radio wave laser\n\n= \"maser\", I think. \n\n\\- _URL_0_ - ",
"I don't know about the 'maser' wonderfuldog mentioned, so it's worth looking into that. I also don't know abo... | [] | [
"http://en.wikipedia.org/wiki/Arecibo_Observatory"
] | [
[
"http://en.wikipedia.org/wiki/Maser"
],
[
"http://www.reddit.com/r/askscience/comments/iumgx/if_i_point_a_laser_to_a_planet_does_it_reach_its/c26u7p7"
],
[],
[]
] | |
14jq8u | What happened in America during the English Cromwellian period, and how much did the influence of parliamentarians influence the nascent "American" ideology?
| I've been listening to the book Savage Kingdom by Benjamin Woolley, and the above question occurred To me, given that King James had an interest in the endeavor of Virginia after the Virginia Company basically imploded, what happened to the colony during this period? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/14jq8u/what_happened_in_america_during_the_english/ | {
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"score": [
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43,
27,
9,
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],
"text": [
"A similar question was asked [here](_URL_0_) but it's not a 100% fit with your own question, so take what's written there in addition ... | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/12xdmq/what_happened_to_the_new_world_colonies_of/"
],
[],
[],
[
"http://en.wikipedia.org/wiki/Plundering_Time"
],
[
"http://www.amazon.com/The-English-Atlantic-Revolution-1640-1661/dp/0674024125"
],
[]
] | |
5t618t | Is 'staying up late' a new habit since the advent of the electric light, or have humans always been night owls? | I kind of imagine living in a time with relatively dim oil lights, or even before that, not much artificial light at all, and I'd figure that once the sun went down, there wouldn't be much more to do. Was it as common in the past to stay awake hours after sunset? Were there certain cultures, or roles within cultures ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5t618t/is_staying_up_late_a_new_habit_since_the_advent/ | {
"a_id": [
"ddkjwbr",
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"score": [
438,
30,
169,
4
],
"text": [
"The evidence from medieval Latin Europe is mixed. While we can trace adaptations to the shorter winter days even at the institutional, official level, it's clear there was ple... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/5f86lb/what_would_an_english_serf_do_to_occupy_his_time/"
],
[],
[
"http://www.nytimes.com/2012/09/23/opinion/sunday/rethinking-sleep.html",
"https://www.ncbi.nlm.nih.gov/pubmed/10607034",
"http://anthropology.emory.edu/home/documents/worthman... | |
5p83nb | Did the Romans have a sign laguage for deaf people? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5p83nb/did_the_romans_have_a_sign_laguage_for_deaf_people/ | {
"a_id": [
"dcpctxn"
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"score": [
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"text": [
"You ask for Rome, I answer with Greek (but perhaps it will be a little bit helpful).\n\nSo the Greek word for deaf - κωφός (kophos) - also means mute and unintelligent. In an oral culture where literacy rates are low, hearing, speaking, and intel... | [] | [] | [
[]
] | ||
9w1fm5 | why do some analog watches contain quartz/rubies/other gems? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9w1fm5/eli5_why_do_some_analog_watches_contain/ | {
"a_id": [
"e9guot5",
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"score": [
3,
20,
10
],
"text": [
"Those jewels are used whenever you need a moving piece; as jewels are really hard, they present little or no wear over time.",
"Synthetic rubies are used to mate moving parts to prevent metal-on-m... | [] | [] | [
[],
[],
[]
] | ||
6jh86b | If it's true that the brain alone uses 25-30% of our calorie intake? How do they even measure that? And do smarter people or people who think more actively in general burn more? | Multiple questions, thought I'd pile them together as they are so similar.
- 25-30% of our total calorie intake for the brain seems like a lot
- How is that even measured
- Do thinkers and dreamers burn more calories via the brain than a "stupid mindless person"?
- Again how is that even measured if resear... | askscience | https://www.reddit.com/r/askscience/comments/6jh86b/if_its_true_that_the_brain_alone_uses_2530_of_our/ | {
"a_id": [
"djevwbt"
],
"score": [
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"text": [
" > 25-30% of our total calorie intake for the brain seems like a lot\n\nThe typical estimate is that your brain uses about 300-400Kcal per day (typically around the upper end) which is about 18-20% of an average height man's daily calorie intak... | [] | [] | [
[
"https://www.jci.org/articles/view/103159",
"http://www.pnas.org/content/99/16/10237.full",
"http://www.pnas.org/content/99/16/10765.abstract?ijkey=5f8fdd472fecb88d021ba4b5967fa732f9090c97&keytype2=tf_ipsecsha",
"https://en.wikipedia.org/wiki/Brain-to-body_mass_ratio"
]
] | |
ljbt3 | Am I really looking at individual atoms here? | [This picture](_URL_0_) is the one in question. | askscience | http://www.reddit.com/r/askscience/comments/ljbt3/am_i_really_looking_at_individual_atoms_here/ | {
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"http://en.wikipedia.org/wiki/File:Atomic_resolution_Au100.JPG"
] | [
[
"http://en.wikipedia.org/wiki/Scanning_tunneling_microscope"
],
[
"http://www.dailymail.co.uk/sciencetech/article-1209726/Single-molecule-million-times-smaller-grain-sand-pictured-time.html"
],
[],
[],
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Scanning_tunneling_microscope"
],
... | |
9n34p0 | Can historians help explain the truth behind African Americans being Israelites and Africans being Hamites? | I recently saw a meme stating African Americans are of Israelite and Africans are Hamite, and it seemed to be causing controversy and nobody could share any real articles about it. Please help me understand the truth | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9n34p0/can_historians_help_explain_the_truth_behind/ | {
"a_id": [
"e7jcbze",
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"score": [
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"text": [
"Africans being Hamites comes from an old Biblical tradition about the origins of the races. Basically, Noah had three sons (Shem, Ham, and Japheth) who went on to repopulate the world after the flood. Shem’s line went on to ... | [] | [] | [
[],
[]
] | |
31otju | Photographs from WWII almost always seem to show Soviet soldiers as not wearing helmets. Why? | Examples:
[1] (_URL_2_)
[2] (_URL_0_)
[3] (_URL_1_)
Caps instead of helmets in every picture. Was there a shortage of metal or something? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/31otju/photographs_from_wwii_almost_always_seem_to_show/ | {
"a_id": [
"cq469xw"
],
"score": [
2
],
"text": [
"There was no strict rule of wearing helmets in Red Army (and in memoirs Soviet soldiers were amused by US soldiers wearing helmets at all times).\nIn early years of war lot's Soviet soldiers didn't want to wear helmets since they're were cumberso... | [] | [
"http://albumwar2.com/wp-content/uploads/2013/05/39451.jpg",
"http://upload.wikimedia.org/wikipedia/commons/5/55/Soviet_liberators_marching_through_the_Korean_county_road._October_1945.jpg",
"http://espressostalinist.files.wordpress.com/2011/05/soviet-troops-in-czechoslovakia.jpg"
] | [
[]
] | |
axp7mc | Are Bound Muons More Stable? | I understand the muon has a half-life of 2 microseconds or so. Is there any impact of being bound in a hydrogen or deuterium atom on the half-life? Has anybody even measured that?
Obviously this question is germane to muon-catalyzed fusion. | askscience | https://www.reddit.com/r/askscience/comments/axp7mc/are_bound_muons_more_stable/ | {
"a_id": [
"ehvtllp"
],
"score": [
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"text": [
"No.\n\nThe binding energy of ~3 keV doesn't matter for the muon which releases 105 MeV in the decay. Even heavier nuclei won't affect its lifetime much. You can get \"muon capture\" as additional process, however, similar to electron capture."
... | [] | [] | [
[]
] | |
8msb1t | Is the earth a perfect sphere? How/why did it become this form? | [deleted] | askscience | https://www.reddit.com/r/askscience/comments/8msb1t/is_the_earth_a_perfect_sphere_howwhy_did_it/ | {
"a_id": [
"dzq2jnd",
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"score": [
6,
7
],
"text": [
"The Earth is approximately an oblate spheroid due to its rotation. Even if the Earth were not rotating, it would only approximate a sphere due to its non-perfect surface. The tidal effects caused by the moon and sun also def... | [] | [] | [
[],
[
"http://www.curiouser.co.uk/facts/smooth_earth.htm"
]
] | |
32wa96 | how does a python digest an alligator? | I saw a post about a massive python swallowing an entire alligator whole. How could the python's stomach break down the tough skin and armor of the alligator? Does the python have super strong stomach acid? Thanks for responding. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/32wa96/eli5_how_does_a_python_digest_an_alligator/ | {
"a_id": [
"cqf8by0"
],
"score": [
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],
"text": [
"Pythons swallow all of their food whole. Large pythons often over estimate their ability eat something. \n\n_URL_0_\n"
]
} | [] | [] | [
[
"http://www.livescience.com/16805-python-snake-swallows-deer.html"
]
] | |
6pb2ar | why is it that spicy tastes considerably amplify when a person chokes on it and it gets into the throat, compared to swallowing normally? | Choked on peppercorn sauce, RIP | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6pb2ar/eli5_why_is_it_that_spicy_tastes_considerably/ | {
"a_id": [
"dkokpja"
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"score": [
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"text": [
"Your mouth is literally made to eat and experience taste, it's specially equipped to eat stuff!\n\nYour throat is made to transport all the goop you just chewed up into your stomach and the rest of your body, after your teeth break down the major... | [] | [] | [
[]
] | |
9h0va7 | if our eyes have a large field of view why cameras with wide field lens distort images spherically and our eyes don’t? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9h0va7/eli5_if_our_eyes_have_a_large_field_of_view_why/ | {
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"score": [
10,
9,
2
],
"text": [
"Being that a camera shows that distortion is a very good indication that there is in fact a distortion with the field of view of our own eyes, the reason why you don't perceive the distortion from your... | [] | [] | [
[],
[],
[]
] | ||
279sgm | why do the numbers on dice have the orientation that they have? | It seems that most dice are made in such a way that each face and each number on each face follow a specific orientation.
For any two n-sided dice I pick up, I observe two things:
* Any specific number occupies a specific face relative to the other faces (Example: On a d20, the 20 side is surrounded by the 2, 8, and ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/279sgm/eli5_why_do_the_numbers_on_dice_have_the/ | {
"a_id": [
"chyqaqu",
"chyqb31",
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"score": [
3,
2,
2
],
"text": [
"I don't know about larger sided dice, but the 6 sided dice is arranged such that the front and back of every orientation adds up to 7. If this is true with 20 sided dice, that would be part of the expla... | [] | [] | [
[],
[],
[]
] | |
4sa4bq | Suicide in the trenches. I have never heard of any discussion about this topic, but it had to occur. What information do we have about it? | WW1 is the primary focus. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4sa4bq/suicide_in_the_trenches_i_have_never_heard_of_any/ | {
"a_id": [
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"score": [
157,
451,
6,
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],
"text": [
"Follow up question:\n\nWhat was the punishment (if any) if a soldier was unsuccessful in his suicide attempt? ",
"As a clarification on your question. How would you disti... | [] | [] | [
[],
[],
[
"http://researchrepository.ucd.ie/bitstream/handle/10197/7332/Osman_WW1_Suicide_2015.pdf?sequence=1",
"http://www.journal.forces.gc.ca/vol15/no4/page22-eng.asp",
"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1526726/"
],
[
"http://www.royalmunsterfusiliers.org/b4night.htm",
"htt... | |
dg4lf8 | why does smoking kill slower than smoke inhalation? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dg4lf8/eli5_why_does_smoking_kill_slower_than_smoke/ | {
"a_id": [
"f38zhsw",
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"score": [
10,
3
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"text": [
"You're not totally absent of oxygen when smoking. If you're inside a burning room, the oxygen is helping to keep the fire going and is being replaced by smoke.\n\nEdit: I should add that firefighters are increasingly lookin... | [] | [] | [
[],
[]
] | ||
2uhbcu | why are china and korea still litigating japan's ww2 behavior in the press, while the western ww2 countries have moved on? | If you follow news in the Pacific, stories about China and Korea demanding that Japan apologize for WW2 behavior pop up constantly. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2uhbcu/eli5why_are_china_and_korea_still_litigating/ | {
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"score": [
5,
35,
12,
6,
2,
7,
2
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"text": [
"Well Greece is just this past week bringing up Nazi looting and destruction to try to force Germany to restructu... | [] | [] | [
[],
[],
[],
[
"http://nation.time.com/2012/12/11/why-japan-is-still-not-sorry-enough/"
],
[],
[
"http://www.reddit.com/r/AskHistorians/comments/1e1bfl/why_has_germany_accepted_and_apologized_for_wwii/",
"http://en.wikipedia.org/wiki/List_of_war_apology_statements_issued_by_Japan"
],
[
... | |
2yr2gf | when you hear about pharmaceutical companies lobbying congress, what are they actually doing? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2yr2gf/eli5when_you_hear_about_pharmaceutical_companies/ | {
"a_id": [
"cpc5umd",
"cpcbu5k"
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"score": [
2,
2
],
"text": [
"They're trying to prevent laws that might hurt them from being passed. This includes, but is not limited to, laws regarding the patents of medicines that are nearly identical to one that is public domain, regulation of the \... | [] | [] | [
[],
[]
] | ||
3ntujw | The Chinese have historically always controlled large areas of land. The Korean peninsula is comparatively very small. Why have the Chinese never occupied the Korean Peninsula? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3ntujw/the_chinese_have_historically_always_controlled/ | {
"a_id": [
"cvrl3ui",
"cvrqqbx"
],
"score": [
3,
2
],
"text": [
"I think it's worth pointing out that under the command of Ögedei, the Mongols did conquer the Korean peninsula, and the Mongols are a recognised Chinese dynasty (the Yuan dynasty), so you could almost make the case that the ... | [] | [] | [
[],
[]
] | ||
9v6gmv | In WWII European theatre and Pacific theatre, how would combatants on both sides dispose of slain enemies? | Also, were any unit formations (details, even task forces) on either side created specifically for the purpose of recovering their own slain soldiers? Especially after a territory was lost and but later regained? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9v6gmv/in_wwii_european_theatre_and_pacific_theatre_how/ | {
"a_id": [
"e99v3je"
],
"score": [
6
],
"text": [
"In both the European and Pacific Theaters, the primary U.S. Army unit tasked with the location, transportation, identification, and burial of friendly and enemy dead was the Quartermaster Graves Registration Company. Mass graves registration oper... | [] | [] | [
[
"https://www.abmc.gov/about-us/history",
"https://www.med-dept.com/articles/quartermaster-graves-registration-service/",
"https://www.abmc.gov/cemeteries-memorials#.W-O3TS_Mw1L"
]
] | |
1z37er | why do webpages seem to lose all aesthetic features on a bad internet connection? | It may seem like a trivial question, but (from my very small understanding of HTML) shouldn't the webpages keep all of the attributes defined in their code?
Also, how do webpages decide what parts to display and what to remove when coping with a poor internet connection?
| explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1z37er/eli5why_do_webpages_seem_to_lose_all_aesthetic/ | {
"a_id": [
"cfq2qbh"
],
"score": [
3
],
"text": [
"The page's style is usually located in a separate file - the CSS file. This is done on purpose, in order to separate the page's contents from its appearance."
]
} | [] | [] | [
[]
] | |
4dlpfi | how does china justify censorship to its citizens? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4dlpfi/eli5how_does_china_justify_censorship_to_its/ | {
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"score": [
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2,
2,
... | [] | [] | [
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[],
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[],
[],
[
"http://listverse.com/2013/01/03/10-deadliest-world-events-in-human-history/"
],
[],
[],
[],
[],
[],
[]
] | ||
b3pscp | what are the main technologic advancements that make it possible to store so much more data in increasingly smaller circuits? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/b3pscp/eli5_what_are_the_main_technologic_advancements/ | {
"a_id": [
"ej18dwj",
"ej18k5j"
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"score": [
6,
4
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"text": [
"Our ability to make tiny transistors which is largely driven by the machines that build them. I wouldn't say there is on specific thing that allows it, chip companies put a lot of effort into developing the machines that mak... | [] | [] | [
[],
[]
] | ||
t6npg | Does Heartbeats per minute have anything to do with the length of a life? | For example, Dogs and other animals that live shorter than us have faster heartbeats? does this have anything to do with it? or am i just far away from the truth? | askscience | http://www.reddit.com/r/askscience/comments/t6npg/does_heartbeats_per_minute_have_anything_to_do/ | {
"a_id": [
"c4k0d28",
"c4k0g23",
"c4k0nzb",
"c4k1xtq"
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"score": [
15,
2,
35,
2
],
"text": [
"Check this article out: [\"1 Billion heartbeats\"](_URL_0_)\n\nI think it is the [heartbeat hypothesis](_URL_1_) that you are thinking of",
"Thanks for the answers :D",
"... | [] | [] | [
[
"http://www.beholders.org/mind/scienceandfacts/124-1billionheartbeats.html",
"http://en.wikipedia.org/wiki/Heartbeat_hypothesis"
],
[],
[],
[
"http://skeptics.stackexchange.com/questions/5701/does-every-species-get-around-a-billion-heartbeats-on-average"
]
] | |
3m1v8v | is there any real danger of muslims implementing sharia law in western societies? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3m1v8v/eli5is_there_any_real_danger_of_muslims/ | {
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"score": [
35,
57,
62,
3,
14,
2,
... | [] | [] | [
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"https://fullfact.org/factcheck/law/80_sharia_courts_britain-38319"
],
[],
[
"https://www.reddit.com/r/offmychest/comments/3i5k1l/looking_forward_to_coming_back_to_my_home_country/"
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[],
[
"http://www.nylslawreview.com/wp-content/uploads/sites/16/2012/... | ||
bdhxfq | Are there contemporary accounts of how early modern bayonet versus sword encounters played out? | I'm curious about whether there were stories told or lessons drawn about how well one did against the other in battle or combat.
Was it expected or unusual for the two weapons to fight each other?
Was there also a social class element at play that might affect the answers to these questions? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/bdhxfq/are_there_contemporary_accounts_of_how_early/ | {
"a_id": [
"ekyg356"
],
"score": [
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"text": [
"This would be modern, rather than early modern, but *D.A. Kinsley's \"Swordsmen of the British Empire\"* has a 30 page chapter comprised of contemporary accounts of Bayonet vs Sword combat in Indian and other colonial wars. The format of this bo... | [] | [] | [
[]
] | |
43n6tg | why does sleep paralysis usually only occur when sleeping on one's back? does it have to do with blood flow or the inner ear? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/43n6tg/eli5_why_does_sleep_paralysis_usually_only_occur/ | {
"a_id": [
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"score": [
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"text": [
"I've definitely gotten it before in different positions, but I can tell for sure my position has a lot to do with it.",
"I don't know if there is enough data to say. All I know... | [] | [] | [
[],
[],
[],
[]
] | ||
2krxcg | why was /r/creepshots not ok (perv pics taken in public places), while it is ok to have entire subs dedicated to pictures of freshly murdered woman, or bloody babies recently aborted? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2krxcg/eli5_why_was_rcreepshots_not_ok_perv_pics_taken/ | {
"a_id": [
"clo3yi5"
],
"score": [
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],
"text": [
"This post is not asking for a layman-friendly explanation to something complicated or technical, so it doesn't belong here and it's been removed. Entirely subjective questions generally belong in /r/askreddit."
]
} | [] | [] | [
[]
] | ||
c51h7a | Marco Polo is quoted to have said on his deathbed, "I did not tell half of what I saw, for I knew I would not be believed." What things may he not have described to the public and why? | It is also possible that the quote refers to the general doubt of the truth of his documented travels. If there is more evidence to support this interpretation, then I would like to ask what aspects of his travels did people doubt during his time? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/c51h7a/marco_polo_is_quoted_to_have_said_on_his_deathbed/ | {
"a_id": [
"erztfg9"
],
"score": [
1441
],
"text": [
"Jacopo da Acqui's report of Marco Polo's last testament should be put in its proper context. His family members were trying to get him to repent and disown all the lies he'd written, to which Polo sneered that he had not told even *half* of wh... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/5570ic/in_one_story_of_sindbad_the_sailor_and_in_marco/d88riob/"
]
] | |
334jur | was there any efficacy to leaches or bleeding as a medical treatment? if not why was the practice so well accepted? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/334jur/eli5was_there_any_efficacy_to_leaches_or_bleeding/ | {
"a_id": [
"cqhvfad"
],
"score": [
2
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"text": [
"The practice of blood-letting was based on the idea that all medical problems are due to an imbalance in the four humors, blood, yellow bile, black bile, and phelgm. If you were sick, doctors would try to fix you by bringing the humors in balanc... | [] | [] | [
[]
] | ||
2mw0r0 | Why was it so important for us to take all the beaches involved in Operation Overlord. | I read that The Allies were worried they weren't going to take all of the beaches invaded in Overlord. Why was that such an important point? Couldn't we have surrounded the other landing zones from behind, after we'd successfully taken the others and then make the Nazi's surrender or take them out more easily? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2mw0r0/why_was_it_so_important_for_us_to_take_all_the/ | {
"a_id": [
"cm88kpz"
],
"score": [
12
],
"text": [
"The securing of the beaches also meant the denial of causeways leading *to* the beaches. An invasion on a broad front had to be accomplished fully to prevent traffic jams (which occurred anyways as resistance inland was fierce) and to deny the G... | [] | [] | [
[]
] | |
9bqf4h | how does the supreme court's decision affect laws nation wide? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9bqf4h/eli5_how_does_the_supreme_courts_decision_affect/ | {
"a_id": [
"e54zgpm",
"e54zihn",
"e54zk1c",
"e54zm4m"
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"score": [
2,
2,
3,
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"text": [
"It sets a legal precedent.\n\nThe Supreme Court is the final court in the US. When they make a decision, that decision is essentially final, and the only people who can overturn th... | [] | [] | [
[],
[],
[],
[]
] | ||
4q53da | How many African countries aside from Egypt have a legitimate basis for national unity that goes further back than their colonial institutions? | Or the opposite, which African countries had no real basis or example of national/ethnic/cultural unity prior to their colonial institutions? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4q53da/how_many_african_countries_aside_from_egypt_have/ | {
"a_id": [
"d4qqop3",
"d4rck0d"
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"score": [
6,
4
],
"text": [
"I believe the question being asked is if there are any African nations that owe their shape and/or territory to native institutions (cultural or legal), or if they owe it to colonial politicking and treaties.\n\nI don't thin... | [] | [] | [
[],
[]
] | |
6zi0ph | how is it that we can take our pulse and not completely block out veins/arteries when we do so? | Like whenever runners check their pulse on their neck, they'll press two or three fingers against the underside of the jaw, sometimes pretty firmly, and it appears not to have any effect. Does it have an effect on blood flow, and if so, why is it so negligible? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6zi0ph/eli5_how_is_it_that_we_can_take_our_pulse_and_not/ | {
"a_id": [
"dmvdfto",
"dmve0m8"
],
"score": [
3,
3
],
"text": [
"You may temporarily reduce blood flow when you do this, but the body isn't *so* delicate that this would hurt you.",
"Nurse here. It does reduce blood flow but the blood pressure does push it to stretch on the side of th... | [] | [] | [
[],
[]
] | |
1hqeev | sun tzu - why exactly was he so great? | I understand he was a good war general, but what was so great about him? His strategy? Why does his philosophy influence so many lives? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1hqeev/eli5_sun_tzu_why_exactly_was_he_so_great/ | {
"a_id": [
"cawxl7n",
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"score": [
2,
3
],
"text": [
"Sun Tzu's philosophy is a widely applicable approach to any sort of battle, from war to competing business to schoolyard cliques. It forms a very good foundation of techniques to prepare and instigate a \"battle\" to ensure ... | [] | [] | [
[],
[]
] | |
5pfld0 | what does chemo do to your body? | Someone I know recently finished his first round of chemo. From what I understand it was extremely rough on his body. What exactly does it do to you? What are all the possible side effects from chemo? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5pfld0/eli5_what_does_chemo_do_to_your_body/ | {
"a_id": [
"dcqtlv3",
"dcqv1yf"
],
"score": [
2,
6
],
"text": [
"Chemo basically kills all fast growing cells. It normally causes some kind of DNA damage that will kill cells. This is more harmful to cells that are quickly dividing because they don't have time to repair the damage. The ca... | [] | [] | [
[],
[]
] | |
3wsfhe | How much did medieval and renaissance society know about the Ancient World? | How much did medieval/renaissance societies like in Europe know about civilizations such as Rome or Greece? Or has Greek/Roman history mainly been uncovered in the last 200~ years? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3wsfhe/how_much_did_medieval_and_renaissance_society/ | {
"a_id": [
"cxysv2w",
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"score": [
8,
5
],
"text": [
"This question is a difficult one to respond to, since it's both difficult to quantify, and of course the early Middle Ages were right after the Classical era, so it was, essentially, yesterday to them. By the time you get to... | [] | [] | [
[],
[]
] | |
2zsztn | How is it that DNA is like a computer even though it seems nothing like a computer? | I often hear this analogy in science journalism articles, but they never go into detail about exactly what this means. I get that the molecule stores information, but, being a computer programmer, I need a bit more to be satisfied.
If DNA is a computer, what does it take as input and what does it produce as output. Wh... | askscience | http://www.reddit.com/r/askscience/comments/2zsztn/how_is_it_that_dna_is_like_a_computer_even_though/ | {
"a_id": [
"cpmi6qb",
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"score": [
6,
2
],
"text": [
"The DNA encodes a series of commands using a four-letter code. This code then has commands written into it for starting and stopping replication into RNA. Within the part that can be copied into RNA are three-letter instru... | [] | [] | [
[],
[]
] | |
3ps3z7 | Did any Roman emperors attempt to have themselves elected to the papacy? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3ps3z7/did_any_roman_emperors_attempt_to_have_themselves/ | {
"a_id": [
"cw8zxrm"
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"score": [
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],
"text": [
"Essentially no. The position of pope as we recognise it now didn't really exist, and no emperor ever attempted to claim the position of the time we now call \"pope\". Those in the time period that we now call \"pope\" would have been seen at the ... | [] | [] | [
[]
] | ||
elwbal | can ocean water be used to extinguish large scale forest fires? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/elwbal/eli5_can_ocean_water_be_used_to_extinguish_large/ | {
"a_id": [
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3,
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"text": [
"Ocean water is full of salt.\n\nSalt interferes with plant growth.\n\nScooping up a bunch of ocean water and dumping it on vegetation might help put out a fire, if you ignore the ... | [] | [] | [
[],
[],
[],
[]
] | ||
cw5huq | why does it feel like hitting concrete when you jump into a body of water from 50 feet or higher? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cw5huq/eli5_why_does_it_feel_like_hitting_concrete_when/ | {
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"ey8dlzg",
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"score": [
21,
4,
3
],
"text": [
"Liquids have viscosity that differ. The thicker a viscosity the more it can mimic (for lack of a better word) the properties of a solid. Water has a relatively low viscosity compared to oil, but when y... | [] | [] | [
[],
[],
[]
] | ||
egxdl6 | the science behind having naturally really dry skin | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/egxdl6/eli5_the_science_behind_having_naturally_really/ | {
"a_id": [
"fcfkwe7"
],
"score": [
2
],
"text": [
"Many people wash their skin too much. Soaps strip the skin of the naturally occurring oils that protect skin and keep moisture in."
]
} | [] | [] | [
[]
] | ||
49kn5x | Why is the eastern United States so different in climate compared to to the western United States? | I'm talking little things like why does a town like Millers, Nevada have such a different climate than Charlotte NC (both roughly 300 miles from their closest ocean.) One is in a dry high desert while the other is a relatively hot and wooded region. There isn't a big north vs south difference yet they are so different ... | askscience | https://www.reddit.com/r/askscience/comments/49kn5x/why_is_the_eastern_united_states_so_different_in/ | {
"a_id": [
"d0ucps7"
],
"score": [
3
],
"text": [
"One of the reasons is that the ocean water by California is much colder than the Gulf of Mexico and Atlantic Ocean (currents push the water from near Alaska all way down to California). Colder water evaporates less and cools the air. Cooler air c... | [] | [] | [
[]
] | |
9tuf26 | What was Adam Smith denouncing with his plea for ‘laissez-faire’? | (Was recommended by r/ask_politics to post here)
Learning about Smith in class right now and was wondering if someone could please help me understand further.
& #x200B;
A redditor mentioned the following to me:
(He was denouncing) arbitrary state power and stifling role of guilds and other corporatist entities tha... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9tuf26/what_was_adam_smith_denouncing_with_his_plea_for/ | {
"a_id": [
"e8zrifx"
],
"score": [
3
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"text": [
"I can't say much about all the English guilds in the 18th c. But I can say something about state-granted monopolies, or monopoly patents.\n\n & #x200B;\n\nThe origin of such things seems to have been a recognition that some industries were usefu... | [] | [] | [
[]
] | |
2i0qfg | when i have a tube filled with marbles and push in on one end, another pops out instantly. what if the tube was a mile? would it still be as quick? | Would the problem be the weight of the marbles? And if so what if we could ignore the weight? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2i0qfg/eli5_when_i_have_a_tube_filled_with_marbles_and/ | {
"a_id": [
"ckxqa6p",
"ckxqkxj"
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"score": [
4,
12
],
"text": [
"The pressure wave will be transmitted from marble to marble at the speed of sound in marble.",
" > What if the tube was a mile? Would it still be as quick?\n\nNope. There is the limit to the speed that a physical force... | [] | [] | [
[],
[]
] | |
1rc5ir | why are canadian and american accents almost indistinguishable, even to residents of either country? why are the two countries so similar? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1rc5ir/eli5_why_are_canadian_and_american_accents_almost/ | {
"a_id": [
"cdlplky",
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"score": [
3,
4,
3,
3
],
"text": [
"I wouldn't say that's necessarily true. I would say a lot of accents are distinguishable, especially in the east. ",
"Canadian and American accents both vary wildly. It's prett... | [] | [] | [
[],
[],
[],
[]
] | ||
thhu7 | pink lemonade. if it's not strawberry or raspberry, then what is the pink? | I mean, there are no pink lemons.
Are there? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/thhu7/eli5_pink_lemonade_if_its_not_strawberry_or/ | {
"a_id": [
"c4mnr5g",
"c4mobs3"
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"score": [
3,
2
],
"text": [
"There is a pink lemon, but it's not used.\n\nPink lemonade is just normal lemonade colored pink. It's dyed using artificial dye, raspberries, cherries, red grapefruit, grapes, cranberries, strawberries, grenadine, or, as in ... | [] | [] | [
[],
[]
] | |
3b9o3q | why doesn't wifi quality correlate with wifi range? | * When I use wifi in the same room as my router, my internet speed is nice and fast, and the wifi strength indicator on my laptop/phone etc is at maximum.
* When I move two rooms away, the internet on my device all but stops. Pages load slowly or not at all, and I receive error messages saying that there is not intern... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3b9o3q/eli5_why_doesnt_wifi_quality_correlate_with_wifi/ | {
"a_id": [
"csk6gbi"
],
"score": [
15
],
"text": [
"Excellent question, I used to work on corporate and hospitality systems (think like the Marriott or Sheraton wifi) and this I had to learn fast.\n\nSo a wireless signal transmits also called broadcasts a lot of information in the signal. Some of... | [] | [] | [
[
"Google.com"
]
] | |
7yg3ar | synthetic meat | Does anyone know what has happened to the synthetic meat we were all promised many years ago that would be just as good as the real thing (One step closer to Blade Runner ). It's now 2018 I haven't seen one synthetic burger.
and is it really that good for you... or not ? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7yg3ar/eli5_synthetic_meat/ | {
"a_id": [
"dugamxa",
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"score": [
404,
8,
67,
16,
4,
2
],
"text": [
"No one has figured out how to make it cheap enough yet. Consider the price of ground beef, if you have a multimillion dollar lab ma... | [] | [] | [
[],
[],
[],
[],
[
"https://www.sigmaaldrich.com/catalog/product/sigma/a9731?lang=en&region=US",
"http://elliot-swartz.squarespace.com/science-related/invitromeat",
"https://www.sigmaaldrich.com/life-science/biochemicals/biochemical-products.html?TablePage=103994915"
],
[]
] | |
b99m98 | what is a white dwarf star made out of? | I get the process more or less, star contracts and gets super dense after all the energy gets used up. What's it actually made of though, molecular structure/atomic structure/particle wise, that makes it so much denser than say Earth while possibly being the same size? By what composition and structure does a white dwa... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/b99m98/eli5_what_is_a_white_dwarf_star_made_out_of/ | {
"a_id": [
"ek3edti"
],
"score": [
3
],
"text": [
"To an extent it depends on the star that died. A White dwarf is essentially the exposed inerds of a sunlike star once the outer atmosphere has been cast off and nuclear fusion has ceased. What it's made of depends on it's mass and what it was las... | [] | [] | [
[]
] | |
3w9vjk | What is the evolutionary reason to losing all hair on our faces besides eyebrows and, for men, beards? | A friend and I are curious about the existence of eyebrows and beards vs. hairless foreheads and cheekbones. Why do these parts of our faces lack hair? What caused this change over the course of our history? | askscience | https://www.reddit.com/r/askscience/comments/3w9vjk/what_is_the_evolutionary_reason_to_losing_all/ | {
"a_id": [
"cxv854i"
],
"score": [
13
],
"text": [
"We obviously lost quite a bit of hair if we compare humans and our cousins the chimapanzees, though maybe not as much on [the face](_URL_2_). Humans probably lost our hair [roughly 1.2 million years ago](_URL_0_). I don't know of one dominant th... | [] | [] | [
[
"http://user.xmission.com/~wooding/pdfs/rogers_mc1r04.pdf",
"https://en.wikipedia.org/wiki/Beard#Evolution",
"http://i.huffpost.com/gen/1490756/images/o-CHIMPANZEE-facebook.jpg",
"http://pec.sagepub.com/content/32/3/285.abstract?id=p5027",
"http://www.sciencedirect.com/science/article/pii/S002... | |
13za0r | what is redshirting in ncaa sports? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/13za0r/what_is_redshirting_in_ncaa_sports/ | {
"a_id": [
"c78gbzr",
"c78gghe"
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"score": [
5,
4
],
"text": [
"NCAA rules say that a player can only play for 4 years. They don't want students essentially becoming professional college sports players. The primary reason they're in college is supposed to be to get a degree.\n\nBut, the ... | [] | [] | [
[],
[]
] | ||
2l4ayc | Did early humans (cavemen) have access to or eat rice, sugarcane, potatoes, etc.? | Or basically what consisted of an early humans diet during the hunter-gather phase? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2l4ayc/did_early_humans_cavemen_have_access_to_or_eat/ | {
"a_id": [
"clrek03"
],
"score": [
2
],
"text": [
"Hunter-gatherers ate the same plants we do today, but in their wild forms. Most plants we eat today, including rice, sugarcane and potatoes, are domesticated versions. These were only domesticated after the advent of agriculture, so they were not... | [] | [] | [
[
"http://www.plosbiology.org/article/fetchObject.action?uri=info:doi/10.1371/journal.pbio.0000008.g001&representation=PNG_I",
"http://upload.wikimedia.org/wikipedia/commons/e/eb/Inside_a_wild-type_banana.jpg"
]
] | |
7qqt3f | how is phobias treated? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7qqt3f/eli5_how_is_phobias_treated/ | {
"a_id": [
"dsr7hzf",
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"score": [
4,
3,
2
],
"text": [
"Education and Exposure mostly, depending on severity, you can generally treat phobias first by educating yourself on the actual risk and facts of the phobia, then exposing yourself to it. This doesn't m... | [] | [] | [
[],
[],
[]
] | ||
2yaoci | microfiber cloths. they seem to be recommended to clean everything? what are they and why are they so amazing? | So no matter what I look up, the solution is to almost always to wipe with a microfiber cloth. Whether to clean cars, glasses, computer screens, laptops, windows, etc.
One day they were just everywhere and I kind of took it for granted. But...some questions
1) What are they?
2) Why are they so amazing?
3) Are they... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2yaoci/eli5_microfiber_cloths_they_seem_to_be/ | {
"a_id": [
"cp7retl",
"cp7rvro",
"cp7tyk6"
],
"score": [
2,
19,
4
],
"text": [
"Better question: why do we even have OTHER options?",
"1 they are cloths with a far higher surface area than more common ones\n\n2 the surface area means holding more water and particles, so you ca... | [] | [] | [
[],
[],
[]
] | |
2sgczp | Is the lava from different volcanos around the world made out of the same material, or do different volcanos have diffetent lava composition? | askscience | http://www.reddit.com/r/askscience/comments/2sgczp/is_the_lava_from_different_volcanos_around_the/ | {
"a_id": [
"cnpcaux",
"cnpqtlc"
],
"score": [
10,
2
],
"text": [
"There are indeed several different types. Lava is classified in various ways, SiO2 content increases from Komatiite (ultra low), to basalt, andesite, dacite and rhyolite (high) ([example of SiO2-based classification](_URL_0... | [] | [] | [
[
"http://thesis.geology-guy.com/images/image058.jpg",
"http://econgeol.geoscienceworld.org/content/98/3/535/F5.large.jpg"
],
[
"http://3.bp.blogspot.com/_l_4ZuulvMnk/TM_-gBdP2NI/AAAAAAAAAEA/SMX_iFpyoqM/s1600/fig9.jpg",
"https://wwwf.imperial.ac.uk/earthscienceandengineering/rocklibrary/viewglos... | ||
4j4x9h | What was the Stalin era Soviet leadership's stance on Tsar era or before Russian military heroes and leaders like Nevsky, Suvorov and Bagration? | It seems to me that such men would be a pretty strong symbol of Tsarism and would be considered counterrevolutionary, yet you see homages to them like Operation Bagration and photos of tanks with "Suvorov" scrawled on them and the like. Was this simply tolerated as a part of Russian military tradition or were they acti... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4j4x9h/what_was_the_stalin_era_soviet_leaderships_stance/ | {
"a_id": [
"d344rsc"
],
"score": [
3
],
"text": [
"The 1930s witnessed a return of sorts by the Soviet state towards its Great Russian past. Both during the Revolution and the 1920s, the state had looked at the historical past of tsardom and its various forms of commemoration of it with a rather ... | [] | [] | [
[
"http://www.ganesha.org/hall/suvorov1.jpg"
]
] | |
1w7890 | How were the cracks and streaks on Europa formed? | Europa: _URL_0_ | askscience | http://www.reddit.com/r/askscience/comments/1w7890/how_were_the_cracks_and_streaks_on_europa_formed/ | {
"a_id": [
"cezbtu7",
"cezkbpa"
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"score": [
11,
2
],
"text": [
"The current theory is the moon is being flexed by Jupiter's gravitational tides, and the ice crust that floats over a liquid sea continually heaves and buckles under that stress. Water then percolates up through the cracks ... | [] | [
"http://upload.wikimedia.org/wikipedia/commons/5/54/Europa-moon.jpg"
] | [
[],
[]
] | |
1juqs4 | why do tv shows and movies sometimes have to change the names/logos on items for copyright reasons? wouldn't it just be free advertisement for the company/product? | I've always wondered this.. Please, explain this to me! | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1juqs4/why_do_tv_shows_and_movies_sometimes_have_to/ | {
"a_id": [
"cbihjyg",
"cbihkn7"
],
"score": [
6,
2
],
"text": [
"There are a number of reasons for this.\n\nFirstly, it limits liability for trademark violations. If, for whatever reason, the company who has their products featured on a given show doesn't like the way in which the product... | [] | [] | [
[],
[]
] | |
8uxqn1 | What's the difference between an ionised hydrogen atom and a proton? | This is probably a super dumb question, but I was watching the latest scishow space video and they mentioned ionised hydrogen atoms, and that it meant it had lost its only electron. Wouldn't that mean it was just a singular proton? | askscience | https://www.reddit.com/r/askscience/comments/8uxqn1/whats_the_difference_between_an_ionised_hydrogen/ | {
"a_id": [
"e1j23no",
"e1jkksb"
],
"score": [
146,
18
],
"text": [
"A ^(1)H^(+) atom is exactly the same thing as a proton.",
"They are synonymous, sometimes. \n\nA proton is a subatomic particle that has a charge of +1e (1 positive elementary charge) which is equal to about 1.602*10^... | [] | [] | [
[],
[]
] | |
3m1lnu | how did disney delay mickey mouse from being in public domain? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3m1lnu/eli5_how_did_disney_delay_mickey_mouse_from_being/ | {
"a_id": [
"cvb634r",
"cvb68aa",
"cvb6of1"
],
"score": [
3,
6,
4
],
"text": [
"Money. They gave so much money to the law makers that they actually made a Mickey mouse law. ",
"Every time the copyright for Mickey Mouse is about to expire a bill goes into law stating that the le... | [] | [] | [
[],
[],
[]
] | ||
3qyrw5 | union between countries (denmark-norway, austria-hungary etc) | I don't fully understand unions between countries. Is it a type of alliance? Same rulers or do the rulers work togheter?
?? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3qyrw5/eli5_union_between_countries_denmarknorway/ | {
"a_id": [
"cwjhj5b"
],
"score": [
2
],
"text": [
"In the case of Denmark-Norway the king of Norway (Håkon Magnusson) married one of the daughters of the Danish king (Margrethe). They had a son, Olav, who was hair to the Norwegian throne. All of Margrethe's siblings died, and her son, Olav, now w... | [] | [] | [
[]
] | |
cv8ziu | what's the"resolution" of film photography? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cv8ziu/eli5_whats_theresolution_of_film_photography/ | {
"a_id": [
"ey2ndcr",
"ey38mte",
"ey3groz"
],
"score": [
31,
5,
2
],
"text": [
"There isn’t a specific “resolution.” It depends on two main physical characteristics of the film itself - the size of the film and the speed of the film - as well as the way that film is exposed.\n\nTh... | [] | [] | [
[],
[
"http://www.tmax100.com/photo/pdf/film.pdf"
],
[]
] | ||
2putaa | how computer languages work in different (spoken) languages. if i wanted a computer to communicate with a computer in russia, would i have to speak russian, or is there some international standard? | Just curious | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2putaa/eli5_how_computer_languages_work_in_different/ | {
"a_id": [
"cn085yf",
"cn08sju",
"cn08xed"
],
"score": [
2,
2,
2
],
"text": [
"Pretty much every programming language is in English, if that's what you're asking. People who can't speak English well have a very hard time learning to code, since it's harder to remember what (for ex... | [] | [] | [
[],
[],
[]
] | |
cjg8kc | Regression after the Fall of the Western Roman Empire | I read in a documentary about Roman Britain that the withdrawal of the Roman Empire from Britain set back the clock back quite a bit. In fact, immediately pre-roman Britain seemed to be a bit ahead of post-roman Britain (5th-6th centuries). That got me thinking. How far back did the collapse of the Roman Empire in the ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/cjg8kc/regression_after_the_fall_of_the_western_roman/ | {
"a_id": [
"evei3lr"
],
"score": [
10
],
"text": [
"Britain and Italy were two special cases of regression, it's not possible to guesstimate how things would have continued to evolve if the Roman Empire hadn't withdrawn from the West and how that compares to what happened in real life, but it's w... | [] | [] | [
[]
] | |
15dvle | what was going on in libya when gaddafi was in power and why was he killed. | I'm seeing a lot of contradictory articles on great things he did for his people and how they loved him but then articles talking about how his people hated him and how evil he was. What's the deal? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/15dvle/eli5_what_was_going_on_in_libya_when_gaddafi_was/ | {
"a_id": [
"c7lvwlz"
],
"score": [
2
],
"text": [
"Gaddafi was about to introduce a new currency, the gold Dinar, made from real gold for the african countries. He would have then sold the petrol from libya for gold only, wich the usa cannot afford. So the usa went in to abolish the gold dinar"
... | [] | [] | [
[]
] | |
2whflw | why are recorders still taught in music classes in school if they all sound so terrible? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2whflw/eli5_why_are_recorders_still_taught_in_music/ | {
"a_id": [
"coqv5ju",
"coqv88v",
"coqvwqq"
],
"score": [
4,
3,
4
],
"text": [
"Because they are really cheap instruments you can't make everyone buy a $1000 violin. ",
"They are cheap and easier to play with tiny hands.",
"They're cheap, small, simple, don't require any r... | [] | [] | [
[],
[],
[]
] | ||
9zr9oj | Why did Battleship design in the Pre-And-During WW2 Era seems to settle on the A-B X turret arrangement? | (That being two Super-firing turrets foreward, one turret aft.)
Eg: Iowa/South Dakota/North Carolina Classes, Yamato Class, Lion Class (As planned,) KGV Class (as Built.)
Of course, there are exceptions to the rule. Nelson Class (due to Treaty weight restrictions,) Vanguard, Bismarck Class (due to, I understand, Germ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9zr9oj/why_did_battleship_design_in_the_preandduring_ww2/ | {
"a_id": [
"each8yy"
],
"score": [
11
],
"text": [
"Balanced ship designs tended to have 8-9 guns for complex reasons linked to the interaction of armament weight vs armor weight to stop the same caliber of shells. A smaller number of guns makes it hard to fire rapid salvos, required to spot your... | [] | [] | [
[]
] | |
aagyft | what exactly does "airplane mode" do and how does it keep my phone from disrupting airplane functions? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/aagyft/eli5_what_exactly_does_airplane_mode_do_and_how/ | {
"a_id": [
"ecrxzd9",
"ecrya80",
"ecs05o2",
"ecsatga",
"ecsj486"
],
"score": [
50,
3,
7,
4,
3
],
"text": [
"It disables the cellular transceiver in your phone. It just turns off the part of your phone that sends and receives data from cell towers. The idea is that ... | [] | [] | [
[],
[],
[],
[],
[]
] |
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