q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
value | subreddit stringclasses 3
values | url stringlengths 4 132 | answers dict | title_urls list | selftext_urls list | answers_urls list |
|---|---|---|---|---|---|---|---|---|---|
27xv2e | how come books don't have age restrictions? | Specifically Novels / Short Stories etc. Thanks for the responses :) | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/27xv2e/eli5how_come_books_dont_have_age_restrictions/ | {
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"I think some do. Although I think it's at least a lot more relaxed because it is left to the reader's imagination of how bad it really i... | [] | [] | [
[],
[],
[],
[],
[
"http://www.telegraph.co.uk/culture/hay-festival/10868544/Judy-Blume-Parents-worry-too-much-about-what-children-read.html"
],
[]
] | |
1kexg3 | if humans a diurnal (opposite of nocturnal) then why is it so hard for me to go to sleep at night and so hard to wake up in the morning? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1kexg3/eli5_if_humans_a_diurnal_opposite_of_nocturnal/ | {
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"text": [
"You can condition yourself to sleep at certain times through habit. Also, if you use a computer or other electrical lighting, you are tricking your body into thinking that it's still light out, and ther... | [] | [] | [
[],
[],
[]
] | ||
13s37i | Why can't we have household refrigeration systems that utilise the energy transfer in useful ways (eg: to heat water)? | askscience | http://www.reddit.com/r/askscience/comments/13s37i/why_cant_we_have_household_refrigeration_systems/ | {
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679,
... | [] | [] | [
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"http://en.wikipedia.org/wiki/Einstein_refrigerator"
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"http://en.wikipedia.org/wiki/Pinch_analysis"
],
[
"http://www.ice-energy.com/ice-bear-energy-storage-system"
],
[],
[],
[],
[],
[],
[]
] | ||
4h5q4d | if my fingerprint was never recorded, how can i be ided? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4h5q4d/eli5_if_my_fingerprint_was_never_recorded_how_can/ | {
"a_id": [
"d2nlpez"
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"score": [
3
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"text": [
"This is true. If you were never recorded there would be no record.\n\nYou'll be fingerprinted for almost any government job, any time you're arrested, or for certain types of background checks.\n\nIf none of that occurred, then there would be no... | [] | [] | [
[]
] | ||
436qqq | why do jobs that are very important get less pay than jobs that are less important? | For example, why does an actor have an average salary of $65,000, while an electrical engineer's average salary is $64,000, and a financial analyst has an average salary of $75,000. Especially considering 2/3 require a bachelor's. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/436qqq/eli5_why_do_jobs_that_are_very_important_get_less/ | {
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"text": [
"the $65000 number suprised me so I googled...\n\n_URL_0_\n\n > According to the most recent SAG statistics, the average member earns $52,000 a year, while the vast majority take ho... | [] | [] | [
[
"http://www.hollywoodreporter.com/news/hollywood-salaries-revealed-movie-stars-737321"
],
[],
[
"http://www.bestplaces.net/cost-of-living/detroit-mi/san-francisco-ca/50000"
],
[]
] | |
4bdtmd | why is it that some cultures have a lot of restaurants while others have a tradition of eating at home more? | In my city there are many Chinese and Sushi restaurants. The newspaper said that Chinese have a long tradition of going out to restaurants for meetings and family gatherings.
On the other hand, there are only two West African restaurants in the metro area. I asked the owner why it's so hard to find African Restaurants ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4bdtmd/eli5_why_is_it_that_some_cultures_have_a_lot_of/ | {
"a_id": [
"d187swi",
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"score": [
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"text": [
"Restaurants are popular in societies that (1) are wealthy and/or (2) have a dense urban population who can easily walk to a shared eating place.",
"Growing up Vietnamese, when it was only my immediate family, we would e... | [] | [] | [
[],
[]
] | |
9860cy | how do gas and electric companies get their product to your house if they all use the same systems like gas mains or long streched of wire? also how is this detectable or easily changable via signing up for them, or ending your buisiness with them? | Please correct me because I'm probably very, very wrong about this, but I thought that all electricty that goes to your house is sent over big electrical cables that eventually go into your house, similar to gas mains or pipes. I also thought that the only way that they could tell that you're using the resource is via ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9860cy/eli5_how_do_gas_and_electric_companies_get_their/ | {
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"text": [
"Well firstly utilities know where their meters are and for a long time and this still happens in some places there are people whose job... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | |
cbrzvn | Why do lobsters, crabs, crawfish, mussels, etc. need to be kept alive during transport, sale, and up to boiling, but shrimp do not? | It would make these delicious shellfish a lot cheaper if they could just be filleted up after being caught, and sold like fish are, but why isn't it done like this?
Also, as a bonus question, do shellfish have similar Mercury levels as fish do? Is it safer to eat asinine amounts of clams or crab than it is tuna? | askscience | https://www.reddit.com/r/askscience/comments/cbrzvn/why_do_lobsters_crabs_crawfish_mussels_etc_need/ | {
"a_id": [
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"text": [
"When certain crustaceans and similar die, they release an enzyme that adversely affects the taste and quality of the meat. With shrimp this can be dealt with pretty easily by beheading the shrimp. With cream and lobster this is pretty much imposs... | [] | [] | [
[]
] | |
2a5b2v | Can the expansion of space be proved in other ways than the observation of distant things moving away? | I took IB HL Physics (Highschool AP equivalent), and what I know is that Edwin Hubble discovered that distant stars, galaxies etc were moving away faster than the speed of light(measured with the Doppler effect), and things further away were moving faster proportionally. My question is that does this constitute proof o... | askscience | http://www.reddit.com/r/askscience/comments/2a5b2v/can_the_expansion_of_space_be_proved_in_other/ | {
"a_id": [
"cirm2pl"
],
"score": [
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],
"text": [
"Remember that there's no proof in science - all we can do is accumulate more and more evidence for something.\n\nAn expanding universe is implied by a pretty wide range of observations today, like the irregularities in the [cosmic microwave back... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Big_Bang_nucleosynthesis",
"en.wikipedia.org/wiki/Cosmic_microwave_background_radiation"
]
] | |
2skg3n | There is a new documentary coming out about new evidence that the exodus happened as recorded in the bible. What evidence could he be referring to? | _URL_0_
_URL_1_ | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2skg3n/there_is_a_new_documentary_coming_out_about_new/ | {
"a_id": [
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"text": [
"Color me skeptical that some random Christian filmmaker has managed to overturn decades of archeology.\n\nThis [review](_URL_0_) suggests that Mahoney wants us to believe that there is a 200 year chronological error in Egyp... | [] | [
"http://www.patternsofevidence.com/en/",
"https://www.youtube.com/watch?v=Eie7TaCS_Ok"
] | [
[
"http://www.thegospelcoalition.org/article/when-was-the-exodus-a-review-of-patterns-of-evidence-exodus"
],
[]
] | |
3jxm7g | how do "blackheads" get this big? or is this more than just a buildup of dirt? warning! may be graphic. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3jxm7g/eli5how_do_blackheads_get_this_big_or_is_this/ | {
"a_id": [
"cut52tg",
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"score": [
3,
2
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"text": [
"Its wax, oils and dirt from your skin and pores that gets clogged up and forms that giant ball\n\nIf left unattended, more and more matter will ball up and result in something like that",
"I should probably be ashamed to... | [] | [] | [
[],
[]
] | ||
2cvj9f | why don't engines create max hp at max rpm? | I like cars and motorbikes and as such have a decent understanding of this area (I like to think so anyway). Although I have always just accepted that combustion engines produce maximum horsepower before the end of the rev range like [this](_URL_0_)(although it is more signifcant in other cars) and never questioned it ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2cvj9f/eli5why_dont_engines_create_max_hp_at_max_rpm/ | {
"a_id": [
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"text": [
"Horsepower is a measure of work which is force over time. Assuming that each cylinder produces the same amount of force every 4 stroke cycle, the more cycles you can pack into a given amount of time, the more work.\n\nSo your gut feel is mostly c... | [] | [
"http://imgur.com/2Rp3IBi"
] | [
[]
] | |
61mqob | Why did the ancient world view the Samaritans with disdain? | Almost people know the parable of the Good Samaritan and how the Samaritans were viewed as vile people. Why was this? Was it only the Jews that hated the Samaritans? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/61mqob/why_did_the_ancient_world_view_the_samaritans/ | {
"a_id": [
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"text": [
"It was largely just the Jewish people who viewed the Samaritans with disdain.\n\nSo let's talk about who the Samaritans were (and actually still are). They were a group of people who were descended from the residents of the ancient kingdom of Isr... | [] | [] | [
[]
] | |
9jg7sj | [Meta] How best to approach economic history | I'm a masters student in Utrecht and one of my modules is very heavily focused on economic history. When I understand it, I absolutely love it but I feel that I fall down in some areas like properly understanding what an isoquant graph is. I was wondering if there are any AskHistorians who might be able to offer litera... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9jg7sj/meta_how_best_to_approach_economic_history/ | {
"a_id": [
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"text": [
"If you just need to understand stuff like isoquant graph just go down to the undergrad economics department and pick up course notes or a standard 2nd/3rd year microeconomics textbook. That's all you really need to know.\n\nEconomic history is ve... | [] | [] | [
[]
] | |
bfaryu | What is the inside of Europa like? | I know the core is heated due to gravitational friction with Jupiter, but does the liquid water ocean touch the ice shell? What temperature is the water? | askscience | https://www.reddit.com/r/askscience/comments/bfaryu/what_is_the_inside_of_europa_like/ | {
"a_id": [
"eldck4a",
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"score": [
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2
],
"text": [
"Europa likely has a metallic iron core with a very large liquid water \"mantle\" and an icy crust. Like the Earth, there's likely a temperature gradient where temperature is highest at the core and decreases outward. The wat... | [] | [] | [
[],
[]
] | |
1nfbrk | what is bitcoin mining and why isn't it profitable? | Overly asked question on ELI5, of course, but I can't understand why it isn't profitable. Wouldn't everybody be mining if it were? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1nfbrk/eli5_what_is_bitcoin_mining_and_why_isnt_it/ | {
"a_id": [
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"text": [
"In order to make an outright profit you have to be able to buy all of the materials to mine, *get* the materials to mine (i.e. shipping time), then pay to run them (electricity). At this point the vast majority of the mining power in the Bitcoin... | [] | [] | [
[]
] | |
2u4jvs | How does THC react on a neuron? | As far as I undestood, THC "connects" itself with certain cannabinoid-receptors (comparable with acetyl-choline-receptors?). They work as a competitive neurotransmitter to endocannabinoid. Thus, Ca2+ -channels are blocked, whereas K+ -channels are opened. Additionally, certain proteins are inhibited, too. So the neuron... | askscience | http://www.reddit.com/r/askscience/comments/2u4jvs/how_does_thc_react_on_a_neuron/ | {
"a_id": [
"co6kqe2"
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"score": [
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],
"text": [
"So you're right about a few things, and confused about some others. Firstly there is no special receptor which cannabis and only cannabis acts on. Why would the receptor exist in the body if it served no natural purpose, and historically never di... | [] | [] | [
[
"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2689518/"
]
] | |
1rqa1q | how can the power company remotely shut off power to a single house? | After years of being a Reddit lurker, I finally created an account to ask this very question. How can the power company remotely disable power to a single house? If this is possible and seemingly so easy, how come they can't also monitor usage remotely? Why do we still have meters and meter readers? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1rqa1q/eli5_how_can_the_power_company_remotely_shut_off/ | {
"a_id": [
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"text": [
"I work for an electric company and currently we are installing Smart Meters on everybodys house. These meters will be somehow read 48 times a day (every half hour) and people who have the smart meters will be able to check their usage when ever t... | [] | [] | [
[]
] | |
3knr4b | Does temperature AND/OR CO2 concentration effect the rate of photosynthesis? | Just want to settle an argument between a few people.
_URL_0_
Looking at the above graph, the Y axis would be the rate of photosynthesis, and the X axis is the one in question. Which would be more appropriate for the X axis, temperature or co2 concentration? Would both be correct?
Thanks! | askscience | https://www.reddit.com/r/askscience/comments/3knr4b/does_temperature_andor_co2_concentration_effect/ | {
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"text": [
"The graph would show CO2 content, assuming CO2 was a limiting factor in this system. If CO2 was a limiting factor as its concentration increased the rate of photosnythesis would increase. Eventuly you would reach a point whe... | [] | [
"https://i.gyazo.com/727c0c4b1b8395aafed71b9e29e57f89.png"
] | [
[
"https://duckduckgo.com/?q=temperature+and+photosynthesis&t=ffsb&iax=1&ia=images&iai=http%3A%2F%2Fwww.docbrown.info%2Fpage20%2Fpage20images%2FPhotosynthesisGraph3.gif"
],
[
"http://www.bbc.co.uk/staticarchive/32b3b8ad49fe959ff58ac5611559c0c4480cc33b.gif"
]
] | |
zy7wv | What are the oldest myths/stories known to us and when do we believe they date from? | I understand that there are many things like creation myths that predate recorded history. Is there any evidence for stories that are really old, like predating homo sapiens?
Can we derive any knowledge of these kind of beliefs/stories from the remains of proto-humans? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/zy7wv/what_are_the_oldest_mythsstories_known_to_us_and/ | {
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"text": [
"I've read that Native American creation myths involving a beaver or other animal diving d... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Cave_painting",
"http://en.wikipedia.org/wiki/Venus_figurines",
"http://en.wikipedia.org/wiki/Neanderthal_behavior#Burial_practices"
],
[],
[],
[],
[
"http://www.ngadjonji.bigpondhosting.com/History/history2.html",
"http://earthsci.org/aboriginal/n... | |
6s122b | why are video game communities so prone to breeding a toxic environment? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6s122b/eli5why_are_video_game_communities_so_prone_to/ | {
"a_id": [
"dl97mo8"
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"score": [
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"text": [
"Online gaming provides an outlet with a mask of anonymity combined with an environment of competition for the venting of latent passive aggressive behavior from unresolved issues in their real lives."
]
} | [] | [] | [
[]
] | ||
34t4yf | Between the Prophet Muhammad's time and Jesus Christ's time, where there other people in nearby areas who were treated as Prophets but their religion did not last? | I heard that 'propheteering' was rather common in the Middle Eastern areas during those times but most didn't inspire a religion that would become as widespread as Christianity or Islam. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/34t4yf/between_the_prophet_muhammads_time_and_jesus/ | {
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"score": [
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1441,
69,
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"text": [
"Sure! To take one example, Mani (216-274) was a Prophet of Iranian origin, who was the progenitor of Mani... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Manichaeism",
"http://www.britannica.com/EBchecked/topic/362167/Manichaeism",
"http://staatsbibliothek-berlin.de/die-staatsbibliothek/abteilungen/orient/aufgaben-profil/veroeffentlichungen/berlin-turfan-collection/"
],
[
"http://www.livius.org/men-mh/messiah... | |
692yao | gutters | I've recently moved to a new place, and for the first time thought about the gutters, since one is broken.
What are they for? Why is it advantageous to keep water away from the wall of the house? Especially since it only really keeps it away from the top? Wouldn't it be helpful to wash the walls and windows in the ra... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/692yao/eli5_gutters/ | {
"a_id": [
"dh3b0wq"
],
"score": [
4
],
"text": [
"It helps direct water off of the roof and away from the base of the house. By doing so I reduces the amount of water at the foundation of the house. If too much water enters the foundation, it can rot your foundation, flood your basement, etc. ba... | [] | [] | [
[]
] | |
2fi568 | what is the psychological reason or phenomenon in which parents truly believe their children are attractive even if most people would find them ugly? | I've met parents who truly believe that their ugly or below-average child (or teenager) is good looking.
I'm wondering why. Is this some kind of evolutionary adaption? By being exposed to their children so much do they unconsciously ignore their children's flaws? Or maybe they love their teen so much that they can't... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2fi568/eli5what_is_the_psychological_reason_or/ | {
"a_id": [
"ck9h957",
"ck9i3a3"
],
"score": [
3,
6
],
"text": [
"Probably as an in-group bias.\n\n_URL_0_",
"Babies are a lot of work. A lot. Have you had one? Seriously, fuck babies. \n\nNo woman in her right mind would want children given what she goes through, with childbirth and t... | [] | [] | [
[
"http://en.m.wikipedia.org/wiki/In-group_favoritism"
],
[]
] | |
2wl9mv | Since Earth loses 3 kg of Hydrogen per second to outer space, will we eventually run out of hydrogen? When? Does Earth gain hydrogen? | And how much hydrogen do we have on earth? (I know it's 3/4 of the universe, but I can't seem to find solid info about Hydrogen on Earth).
^Sources ^are ^much ^appreciated. | askscience | http://www.reddit.com/r/askscience/comments/2wl9mv/since_earth_loses_3_kg_of_hydrogen_per_second_to/ | {
"a_id": [
"cos1o77"
],
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"text": [
"According to some quick math I just did, the oceans have about 1.52e20 kg of hydrogen.\n\nWe should be good for a while, and by a while I mean three billion times longer than the current age of the universe assuming constant rate of loss (which ... | [] | [] | [
[
"http://www.npr.org/blogs/thetwo-way/2014/06/15/322246690/deep-below-oceans-of-water-may-be-trapped-in-a-crystal-sponge",
"http://en.wikipedia.org/wiki/Abundance_of_the_chemical_elements",
"http://en.wikipedia.org/wiki/Frost_line_%28astrophysics%29"
]
] | |
1x0q0o | Is it possible to convert the signals that travel down a nerve into a digital signal? | And if you where to reverse the process, if you where to directly simulate the nerve using the stored digital signal, would it behave just like the signal was coming from a sensory neuron? | askscience | http://www.reddit.com/r/askscience/comments/1x0q0o/is_it_possible_to_convert_the_signals_that_travel/ | {
"a_id": [
"cf83gtc"
],
"score": [
2
],
"text": [
"I'm a neuroscience student, and I've actually just finished a project working on this exact thing. It was a pilot study looking into the possibility of developing a prosthetic arm capable of giving amputees tactile feedback, so they can actually ... | [] | [] | [
[]
] | |
fnattc | How did the Illuminati, a historical liberal Bavarian society, become the catch-all term for secret cabals and conspiracies? | The Illuminati, as far as I understand, were shut down in the late eighteenth century. However, as long as I can recall, they have always been the target of accusations of modern-day conspiracies. How did the historical Illuminati evolve into the Illuminati of modern folklore?
Thanks for your time and help.
EDIT:... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/fnattc/how_did_the_illuminati_a_historical_liberal/ | {
"a_id": [
"flb7y3r"
],
"score": [
163
],
"text": [
"First some background on the political environment at the end of the Eighteenth Century: The actual Illuminati was a group derived from a power struggle among Freemasons in Bavaria in the 1770s. The members of the Illuminati desired to move the... | [] | [] | [
[
"https://www.jstor.org/stable/24690289"
]
] | |
bhetw6 | Throughout the history of the Earth, which land areas have shifted the least and the most? | We (hopefully) all know that Earth used to be a single continental landmass that has since separated and drifted apart immensely. What land masses have shifted the least over these few hundreds of millions of years. And what are the implications (climate-wise, biological, cultural, etc) of experiencing a large shift ve... | askscience | https://www.reddit.com/r/askscience/comments/bhetw6/throughout_the_history_of_the_earth_which_land/ | {
"a_id": [
"eltsxp1",
"eltuf9i"
],
"score": [
6,
3
],
"text": [
"For reference, the 'single continental landmass' is called a [supercontinent](_URL_0_). As you indicate, many peoplae are familiar with the most recent one, Pangea, but it's important to realize that there have been [multipl... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Supercontinent",
"http://scotese.com/earth.htm",
"https://portal.gplates.org/cesium/?view=AgeGrid",
"https://en.wikipedia.org/wiki/Supercontinent#Supercontinent_cycles",
"https://en.wikipedia.org/wiki/List_of_supercontinents",
"https://en.wikipedia.org/wiki/C... | |
11wvcl | Why is carbon capture and storage not used more often? | It seems like a very promising technique, allowing us to continue using old cheap technology such as coal or gas, whilst removing most of the co2 produced, so why does it remain largely unused? | askscience | http://www.reddit.com/r/askscience/comments/11wvcl/why_is_carbon_capture_and_storage_not_used_more/ | {
"a_id": [
"c6qa0gl"
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"score": [
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"text": [
"Well the whole reason to use Carbon Capture to to reduce the CO2 emissions of fossil fuels, so there's no reason for the private sector to do it unless they're trying to earn good PR. It's not good business to voluntarily deal with your own exter... | [] | [] | [
[]
] | |
ddcwph | how does a company just “shut off the internet” within its borders? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ddcwph/eli5_how_does_a_company_just_shut_off_the/ | {
"a_id": [
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"score": [
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27,
27,
83,
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"text": [
"A country you mean?\n\nInto and out of every country there are surprisingly only a few high bandwidth fiber o... | [] | [] | [
[
"https://www.submarinecablemap.com/#/"
],
[],
[
"thepiratebay.org"
],
[],
[],
[],
[]
] | ||
32vq6v | how the hell bb8(new starwars robot) works? | I guess some kind of magnets involved. But please ELI5. For those who don't know what BB8 is [here](_URL_0_) is a video which might help. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/32vq6v/eli5how_the_hell_bb8new_starwars_robot_works/ | {
"a_id": [
"cqfa16j"
],
"score": [
5
],
"text": [
"It's impossible to know exactly without seeing the inside of the robot but I'll try.\n\nMoving ball robots are actually something that exist. You can find dog toys that are just a ball that has a weight inside that is slung around to make it move... | [] | [
"https://youtu.be/bnDdSSFenRk"
] | [
[
"http://i.imgur.com/ol7xneF.png",
"http://autsys.aalto.fi/en/attach/Rollo/image7DU.orig.jpg"
]
] | |
fd0k8c | what is back pressure, and how does this relate to centrifugal separators/purifiers? | I've recently qualified as a marine engineer, but am a bit stumped when it comes to understanding back pressure and how it's used to make the separation process of heavy and light oil more efficient. All the explanations I've read are all related to cars or bikes, which isn't helpful.
If there's anyone who has worked ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fd0k8c/eli5_what_is_back_pressure_and_how_does_this/ | {
"a_id": [
"fjefkli"
],
"score": [
2
],
"text": [
"Back pressure is maintained by the gravity disc and is used to limit flow of separated water holding the water inside the purifier. If the hole diameter is larger then back pressure decreases and more water flows out of the purifier and the oil/w... | [] | [] | [
[]
] | |
6vj3r9 | Were there any honor-bound rules in European early 18th century warfare? | I mean specifically when two armies clashed on the battlefield, marching towards one another to inevitable bloodshed. Would the infantry lines allow one side to fire the first volley, then proceed to be allowed to fire their volley afterward? Or would they fire their volleys at the same time then charge?
The reason I... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6vj3r9/were_there_any_honorbound_rules_in_european_early/ | {
"a_id": [
"dm1ouvp"
],
"score": [
6
],
"text": [
"So my field of interest with the era you're referring to is more around the British Regimental System, but I can at least get a decent answer started and others can add to it.\n\nAttempts to codify rules on warfare certainly predate the early 18t... | [] | [] | [
[]
] | |
1dii8d | why "may day" caused riots in seattle last year. | Or rather, why Anarchists used it to cause riots. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1dii8d/eli5_why_may_day_caused_riots_in_seattle_last_year/ | {
"a_id": [
"c9qqefd"
],
"score": [
3
],
"text": [
"May 1st is [International Worker's Day](_URL_0_). It has historically been associated with Leftist groups. \n\nIn the US, Labor Day is celebrated on the first Monday of September, namely because of IWD's association with Communism. Many of the US... | [] | [] | [
[
"http://en.wikipedia.org/wiki/International_Workers%27_Day"
]
] | |
2lhn8g | if americans changed to medicare for all or universal healthcare, would their increase in taxes be more, less, or equal to the amount they pay for medical now? | After hearing some of the out of pocket and monthly premiums people pay, would the tax increase to fund universal healthcare be equivalent or better?
Edit: maybe I'm asking the wrong subreddit | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2lhn8g/eli5_if_americans_changed_to_medicare_for_all_or/ | {
"a_id": [
"cluu13v",
"cluu35k"
],
"score": [
3,
2
],
"text": [
"Almost certainly less.\n\nIn every country with a universal health care system [medical costs are substantially less than in the US.](_URL_0_) \n\nTheir [health care outcomes are better](_URL_1_) than in the US too.",
"... | [] | [] | [
[
"http://www.pbs.org/newshour/rundown/health-costs-how-the-us-compares-with-other-countries/",
"http://www.nejm.org/doi/full/10.1056/NEJMp0910064"
],
[]
] | |
63t0tj | photographic memory. | How does it work and is it something you are born with or can you acquire the ability over time? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/63t0tj/eli5photographic_memory/ | {
"a_id": [
"dfwrm4p",
"dfwy09k"
],
"score": [
5,
2
],
"text": [
"From what I understand; it's a fallacy.\n\nYou can have an exceptional memory, but the proof of a truly photographic memory is proving elusive.",
"The way I remember things is to recall the picture in my mind. \n\nI can ... | [] | [] | [
[],
[]
] | |
3ne99h | why is google transitioning into "alphabet" and what does this mean? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3ne99h/eli5_why_is_google_transitioning_into_alphabet/ | {
"a_id": [
"cvn8b0x",
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"cvn97gv",
"cvn9klc",
"cvn9mw4"
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"score": [
9,
6,
5,
5,
9
],
"text": [
"To end users it has no impact, Google will be Google. For investors they are forming a parent company with separate entities. I've seen companies do this for ... | [] | [] | [
[],
[],
[],
[],
[
"https://abc.xyz/"
]
] | ||
23ohic | if antibacterials kill 99.9% of germs, why haven't our bodied become almost totally populated by offspring of the .01%? | I would think that the .01% that survived would continue to reproduce unchecked since they are seemingly immune to the anti bacterial. Or is it not that they're immune, but that they just got lucky? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/23ohic/eli5_if_antibacterials_kill_999_of_germs_why/ | {
"a_id": [
"cgyznq1",
"cgz0a2p",
"cgz2py7"
],
"score": [
2,
3,
3
],
"text": [
"It's really late, but the short answer is that you can never get rid of what your 'normal flora' . It helps keep other organisms in check (they do not disappear with antibacterial soap).\n\nAlso, your ... | [] | [] | [
[],
[],
[]
] | |
2bzj4y | why do we celebrate with our fists clenched? | Like this : _URL_0_ | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2bzj4y/eli5_why_do_we_celebrate_with_our_fists_clenched/ | {
"a_id": [
"cjag5gv"
],
"score": [
2
],
"text": [
"It's a show of power. Clenched fists, loud voices, arms held above your head, maybe even stomping the ground with your feet.\n\nCelebratory shows of power have been with humanity for an extremely long time. Blind people will celebrate in the same... | [] | [
"http://imgur.com/Hdrb24z"
] | [
[]
] | |
5jj8ex | what does the discovery of anti-hydrogen mean in practical terms and how will it change the way we view the elements? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5jj8ex/eli5_what_does_the_discovery_of_antihydrogen_mean/ | {
"a_id": [
"dbgkrpi"
],
"score": [
4
],
"text": [
"We already knew about anti-hydrogen, quite well actually, the recent discovery was that it has an identical emission spectrum to hydrogen - the caveat is that this was entirely predicted by our current model of particle physics, and so it was mor... | [] | [] | [
[]
] | |
q9jsz | History of letter writing | What is the history of letter writing? Surely paper would have been very expensive. Did people print smaller to fit more text onto the paper? Was it a very big deal to receive a handwritten letter? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/q9jsz/history_of_letter_writing/ | {
"a_id": [
"c3vv44p",
"c3vxvdq",
"c3vzooz"
],
"score": [
3,
3,
2
],
"text": [
"The history of letter writing is a very broad topic on a very large time frame. For example: [This is a letter and envelope from around 2037 BCE.](_URL_1_)\n\nTo generalize, writing was more or less res... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Chapar_Khaneh",
"http://en.wikipedia.org/wiki/File:Employement_contract_IMG_0074.jpg"
],
[],
[
"http://oll.libertyfund.org/?option=com_staticxt&staticfile=show.php%3Ftitle=541&Itemid=27",
"http://books.google.co.nz/books?id=M2xiAAAAMAAJ",
"http://boo... | |
7py241 | rockets have to go straight up from the ground instead of flying high and kicking in the rockets to escape gravity? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7py241/eli5rockets_have_to_go_straight_up_from_the/ | {
"a_id": [
"dskut7k",
"dskuvr0",
"dskuw5r"
],
"score": [
3,
3,
3
],
"text": [
"How do they get up in the air? Something has to carry them *and* all the rocket fuel they need, which means you need a winged aircraft capable of carrying a giant load.\n\nEasier and saves money to jus... | [] | [] | [
[],
[
"https://www.reddit.com/r/explainlikeimfive/comments/4h587t/eli5_why_do_spaceships_and_rockets_have_to_launch/",
"https://www.reddit.com/r/explainlikeimfive/comments/2askov/eli5_why_does_nasa_and_other_space_agencies/",
"https://www.reddit.com/r/explainlikeimfive/comments/60hpum/eli5_why_do_rock... | ||
1ykmnr | why do acoustic guitars sound better with age | EG: [Trigger](_URL_0_), Willie Nelson's guitar | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ykmnr/eli5_why_do_acoustic_guitars_sound_better_with_age/ | {
"a_id": [
"cflctng",
"cfldhvt"
],
"score": [
5,
2
],
"text": [
"Regular playing of a wooden instrument improves it's tone over time. People thought that it was just a marketing gimick or just snobbery, but it has actual basis in science. The vibrations over time basically stiffen the woo... | [] | [
"http://www.texasmonthly.com/story/trigger"
] | [
[
"http://www.nytimes.com/1996/02/27/science/when-violinists-play-their-violins-improve.html"
],
[]
] | |
43xiiu | how are leicester city doing so well in the epl this season | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/43xiiu/eli5how_are_leicester_city_doing_so_well_in_the/ | {
"a_id": [
"czlreii"
],
"score": [
4
],
"text": [
"- Emphasis on pace and counter-attacking, over holding possession. \n\n- Some very accurate passers in the midfield to get the ball forward effectively. \n\n- A very clinical finisher who is scoring a lot of his chances.\n\n- Really high fitness ... | [] | [] | [
[]
] | ||
4ksnkj | if electrons repelling each other means you never really touch something, how do different things feel differently? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4ksnkj/eli5_if_electrons_repelling_each_other_means_you/ | {
"a_id": [
"d3hgw50",
"d3hhcmx",
"d3hhhf1",
"d3hm4fv",
"d3hmj8c",
"d3hpfx8",
"d3hw5mq",
"d3hxmef"
],
"score": [
81,
5,
15,
17,
3,
4,
5,
2
],
"text": [
"Different configurations of electrons-repelling-you feel different. Your mistake is in as... | [] | [] | [
[],
[],
[],
[
"https://www.youtube.com/watch?v=P0TNJrTlbBQ"
],
[],
[
"http://imgur.com/vTS7H7W"
],
[],
[]
] | ||
2ar8c0 | Did Eva Braun 100% willingly commit suicide with A. Hitler? | Is there written or apocryphal evidence that she was not at least in part coerced into killing herself? I've read a translation of his dictated will & testament that said something like 'my wife and I choose death over disgrace' or something. Would Eva Braun have been arrested or prosecuted by the Allies had she su... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2ar8c0/did_eva_braun_100_willingly_commit_suicide_with_a/ | {
"a_id": [
"ciyiev6"
],
"score": [
3
],
"text": [
"Hitler's secretary Traudl Junge talks about this at great length in her memoirs. She tells how on April 21 von Ribbentrop tried to get Eva Braun to persuade Hitler to flee Berlin. Braun refused and said: \"He must decide this for himself. If he t... | [] | [] | [
[]
] | |
35ba7j | why did some kings get crowned by the holy roman emperor and others by the pope? | for example, the first polish king was crowned by the holy roman emperor, while in france the kings were crowned by the pope. was there some sort of power struggle going on? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/35ba7j/why_did_some_kings_get_crowned_by_the_holy_roman/ | {
"a_id": [
"cr2sexr",
"cr2sx6l"
],
"score": [
2,
2
],
"text": [
"To answer the last question you asked (regarding a power struggle between the pope and the emperor), oh yes there was. Though the Emperor was named as such by the pope, the emperors of the HRE started taking more and more po... | [] | [] | [
[],
[]
] | |
2iyssd | if obama can veto bills, why doesn't he just veto the tiered net neutrality bill, and draft his own to send to congress for approval? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2iyssd/eli5if_obama_can_veto_bills_why_doesnt_he_just/ | {
"a_id": [
"cl6pu5s"
],
"score": [
3
],
"text": [
"Someone can correct me if I'm wrong, but I don't believe regulatory decisions like this (made by the FCC) have to be passed through congress and the president as legislation.\n\nIt's more like there is legislation granting the FCC the authority t... | [] | [] | [
[]
] | ||
3uqx8r | why do many arab countries have similar flags? | United Arab Emirates, Afghanistan, Western Sahara, Iraq, Iran, Jordan, Kuwait, Libya, Palestine, Sudan, Sirya (Egypt and Yemen missing green though) all have black, white, green and red in the flag. I know that the black symbolises Mohammed's army flag or something along those lines, but what about the other colours?
... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3uqx8r/eli5_why_do_many_arab_countries_have_similar_flags/ | {
"a_id": [
"cxh0sxp",
"cxh9ye0"
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"score": [
5,
2
],
"text": [
"Other colors are the other Arab empires. Black is for the Abbasids (not Muhammad), White for the Ummayaads, Green for the Fatimids, and Red for the Hashemites, which were the rulers of Mecca who organized an Arab nationalist... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Flag_of_the_Arab_Revolt"
],
[]
] | |
1h3kvp | how does filibustering work? why doesn't someone just interrupt them because they're rambling on? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1h3kvp/eli5_how_does_filibustering_work_why_doesnt/ | {
"a_id": [
"caqhpgz",
"caqj10p",
"caqk5n1"
],
"score": [
12,
2,
9
],
"text": [
"Part of the rules which make the orderly discussion of bills possible is that when you \"have the floor\" you won't be interrupted.",
"The rules say. Unless you cede the floor, you hold the floor."... | [] | [] | [
[],
[],
[]
] | ||
369gjm | What were Argentina's "plans" with the Falklands if they had won the war? | They dont really have much of a legitimate claim to the island so it would pretty much be conquest, what would have it meant for the Island and its people in the short and long term?
Would its 2k british citizens been deported? the Island repopulated with loyal argetines? Military Occupation? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/369gjm/what_were_argentinas_plans_with_the_falklands_if/ | {
"a_id": [
"crcavqr",
"crcc46g"
],
"score": [
22,
34
],
"text": [
"Why were they so hotly contested? Strategic importance, or just the UK needing to not cave?",
"hi! you may be interested in this post\n\n* [What were the Argentinians plans for the Falkland Islanders after the Falkland... | [] | [] | [
[],
[
"https://www.reddit.com/r/AskHistorians/comments/2aoq76/what_were_the_argentinians_plans_for_the_falkland/"
]
] | |
f7gd1c | Are some plastics more environmentally harmful than others? | Different types of plastic have different properties. So, would the environmental damage caused by, say 10 tonnes of PET dumped in the middle of the Atlantic Ocean differ from 10 tonnes of PVC? And other than being non-biodegradable, why are plastics so bad for the environment? | askscience | https://www.reddit.com/r/askscience/comments/f7gd1c/are_some_plastics_more_environmentally_harmful/ | {
"a_id": [
"fih2qvo",
"fihgvqo"
],
"score": [
6,
2
],
"text": [
"Absolutely. Some plastics break down faster than others. Some plastics are toxic when they break down while others are not. Some plastics are easy to recycle while others are difficult. _URL_0_",
"There are a number ... | [] | [] | [
[
"https://www.google.com/search?q=how+different+plastics+break+down&tbm=isch&ved=2ahUKEwiYzs2Ch-bnAhUTtJ4KHawaBoMQ2-cCegQIABAC&oq=how+different+plastics+break+down&gs_l=mobile-gws-wiz-img.3..33i299l2.364066.370596..372443...2.0..0.170.3887.0j33......0....1.......5..35i362i39j35i39j0j0i67j0i3j0i... | |
48e9a2 | What was life like for Amish communities in times of war, such as the Civil war, WWI & WWII? | Were they pressured by drafts? Are there documented incidents of them serving in wars? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/48e9a2/what_was_life_like_for_amish_communities_in_times/ | {
"a_id": [
"d0jamg7"
],
"score": [
2
],
"text": [
"On a tangent, did the Amish volunteer to fight/conscripted or were they exempt?"
]
} | [] | [] | [
[]
] | |
26c7rf | if technology were capable of electronically modelling the human brain, including all synapses, chemical processes, and sensory input, would it actually be capable of learning on its own, or would we still have to tell it how to learn with programming? | Secondary question: What's the closest we've come to modelling the brain programatically? I gather it wouldn't be a very good model, considering there's a lot about the brain we don't really understand yet. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/26c7rf/eli5_if_technology_were_capable_of_electronically/ | {
"a_id": [
"chpnuu2"
],
"score": [
10
],
"text": [
"OP specified that everything is modeled.\n\nIs a perfect model the same as the original? Functionally, yes."
]
} | [] | [] | [
[]
] | |
717ytd | how does the post office know which piece of mail to forward? does someone read every piece? | Random thought. Since there's no barcode how does it get sorted? There must be a ton of names on the list. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/717ytd/eli5_how_does_the_post_office_know_which_piece_of/ | {
"a_id": [
"dn8sc1f",
"dn8tot7"
],
"score": [
6,
2
],
"text": [
"Optical scanners read the address. They do fine with machine printed addresses like from a business or your home printer. They do *okay* with neatly handwritten addresses but sometimes they can't make it out and human has to... | [] | [] | [
[],
[]
] | |
9uf124 | how do different fruits have different amounts of sugar or minerals if they grow from the same soil? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9uf124/eli5_how_do_different_fruits_have_different/ | {
"a_id": [
"e93q2a3"
],
"score": [
3
],
"text": [
"Plants are not primarily composed of the soil in which they grow. The vast majority of the plant's structure, including the sugar in the fruit, is composed of air, water, and sunlight. Through photosynthesis the plants can react the CO2 and H2O t... | [] | [] | [
[]
] | ||
32gxb0 | 1302nd Engineers Company B (US Army) in World War 2, I've exhausted my resources, anyone know anything? | My grandfather served in this company in WW2, doesn't talk about it much. He had an incredible photo album I remember looking through growing up that was stolen, photos of a concentration camp. Just lots of photos of bodies stacked to the ceiling, ovens, everything you've heard of. He wouldn't talk about it but he left... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/32gxb0/1302nd_engineers_company_b_us_army_in_world_war_2/ | {
"a_id": [
"cqb62cm"
],
"score": [
4
],
"text": [
"The Army employs historians at most of its major centers - in your case, the US Army Engineer School, Fort Leonard Wood, MO. Their staff historian and or museum director could point out resources, you might email them."
]
} | [] | [] | [
[]
] | |
268pqi | Why did the "v" hand gesture change it's meaning from Churchill's "v for victory" to the hippie era "peace" symbol? | It just occurred to me that the "v" gesture changed from a war-related symbol to the complete opposite! Any insight would be much appreciated. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/268pqi/why_did_the_v_hand_gesture_change_its_meaning/ | {
"a_id": [
"chp3azi"
],
"score": [
78
],
"text": [
"The counterculture of the era commonly appropriated gestures which were previously in support of war as protests against it. Examples of this include driving with headlights on (first in support of the war, then as protest, mentioned in *Grossma... | [] | [] | [
[]
] | |
4lkjy8 | How much truth is there to the saying Nero 'fiddled while Rome burned'? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4lkjy8/how_much_truth_is_there_to_the_saying_nero/ | {
"a_id": [
"d3o4vcl"
],
"score": [
20
],
"text": [
"Not all that much, honestly, even when you remember that the fiddle wasn't invented until the 16th century! He may have been plucking a lyre when it happened, though: He was giving a dramatic rendition of Troy over in Greece when the fire happen... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/1j7qdy/was_nero_involved_in_the_burning_of_rome_why_is/"
]
] | ||
2laue3 | Is the Milky Way spinning in a stable configuration? | The Milky Way is set to collide with the Andromeda Galaxy in 4 billion years. But if it didn't, (and in the meantime) would it stay in the same shape that it is now as it rotates, like a spinning top, or will it deform and change shape somehow? | askscience | http://www.reddit.com/r/askscience/comments/2laue3/is_the_milky_way_spinning_in_a_stable/ | {
"a_id": [
"cltkjrq"
],
"score": [
4
],
"text": [
"The milky way is a barred spiral galaxy. Galaxies of our shape occur mostly because of many interactions with other galaxies. With no further interactions the milky way overtime would most likely loose its bar. However we are in a busy corner of ... | [] | [] | [
[]
] | |
5tw1w5 | What variety of Arabic would most historical sources have been written in after the decline of Classical Arabic but before the modern era? | Are our surviving Arabic texts after the 9th century still written in Classical Arabic, in a local vernacular, or something else? I'm particularly curious about the type that would have been used in the religious texts of Safavid Iran, my main area of interest, as most religious writings there were still in Arabic unti... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5tw1w5/what_variety_of_arabic_would_most_historical/ | {
"a_id": [
"ddru3j2"
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"score": [
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"text": [
"Cool, this question is totally my area. \nI'm not sure why you think Classical Arabic declined after the 9th century. In fact, the 9th century was the period in which the first real grammars of Classical Arabic were being produced; Sibuwayh hims... | [] | [] | [
[]
] | |
a65685 | Are there limits (low or high) to the frequencies that lasers can emit? | askscience | https://www.reddit.com/r/askscience/comments/a65685/are_there_limits_low_or_high_to_the_frequencies/ | {
"a_id": [
"ebs2yu6",
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"score": [
9,
5
],
"text": [
"There are technical limitations, especially if you are talking about lasers and not about stimulated emission (the physics lasers are based on). To make a laser you need a resonant cavity and an amplifying medium, both at th... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Maser"
]
] | ||
176sb4 | Does an aircraft get better "gas mileage" on a cold day or hot day? | What about just during takeoff?
edit: Does the type of aircraft matter? Would the effects be more noticeable in a propeller craft versus a jet engine? | askscience | http://www.reddit.com/r/askscience/comments/176sb4/does_an_aircraft_get_better_gas_mileage_on_a_cold/ | {
"a_id": [
"c82tpwf",
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"score": [
3,
3,
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"text": [
"Cold day. Air is denser. At least I'm pretty sure of that. \n\nDenser air has more air molecules per unit volume, so the fuel will combust more thoroughly. In hit air, you need more air to combust the s... | [] | [] | [
[],
[],
[]
] | |
33xsz2 | Do galaxies die? How many years would that take? Could some of the most distant galaxies we've observed be long gone today? | askscience | http://www.reddit.com/r/askscience/comments/33xsz2/do_galaxies_die_how_many_years_would_that_take/ | {
"a_id": [
"cqph5b3",
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"score": [
13,
7,
2
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"text": [
"Well, it depends on how you define \"death\". Galaxies collide and merge with each other, so lots of the galaxies we see that are billion of years old may not be there anymore, because they have merge... | [] | [] | [
[],
[],
[]
] | ||
2pez7d | why can't terrible teachers be fired? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2pez7d/eli5why_cant_terrible_teachers_be_fired/ | {
"a_id": [
"cmw1q4c",
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"score": [
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2,
2,
7,
2
],
"text": [
"Tenure: the idea that the longer you're there the more it takes for you to get fired. A lot of public school teachers are contractually protected, even if the... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
248ylo | if the recession ended five years ago, why does the economy still seem so bad? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/248ylo/eli5_if_the_recession_ended_five_years_ago_why/ | {
"a_id": [
"ch4rmc5",
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"score": [
4,
2
],
"text": [
"Because we haven't fully recovered from the recession.\n\nThink of it like your house burning down. The fire stopped months ago, but you still aren't in a new house and all your clothes smell like smoke.",
"The recession... | [] | [] | [
[],
[]
] | ||
1ix7f5 | how do they film tv shows/movies that take place in big cities? | When they're making TV shows that take place in Chicago or LA or New York City, how do they film on the streets? Do they just film around people, or do they block off the section they want to use? They can't just shut down part of a city to film there, so how do they do it without getting interrupted? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ix7f5/eli5_how_do_they_film_tv_showsmovies_that_take/ | {
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"score": [
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"text": [
"Some options:\n\n* They block off streets on ... | [] | [] | [
[],
[],
[],
[
"http://www.youtube.com/watch?v=clnozSXyF4k"
],
[],
[],
[],
[],
[
"https://www.youtube.com/watch?v=jKZio1NA15I"
],
[]
] | |
1k3513 | the proof behind the existence of black holes. | The proof used to know about their existence before they were captured on camera. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1k3513/eli5_the_proof_behind_the_existence_of_black_holes/ | {
"a_id": [
"cbkvpn6",
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"score": [
10,
3,
2
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"text": [
"To understand it, first you have to understand escape velocity.\n\nIf you throw a ball straight up, depending on the velocity the ball it has some velocity. It will be dragged on by the gravity of the ... | [] | [] | [
[],
[],
[]
] | |
6n1i51 | how does after shave work and why is it important to use it? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6n1i51/eli5_how_does_after_shave_work_and_why_is_it/ | {
"a_id": [
"dk5ydg7"
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"score": [
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"text": [
"Aftershave (one word) is a liquid compound that generally contains an antibacterial agent like denatured alcohol (to disinfect any cuts/microabrasions), an astringent like witch hazel (to reduce skin irritation), and a numbing agent like menthol... | [] | [] | [
[]
] | ||
5jg181 | how do pharmaceutical companies ensure each pill contains the right dosage and that none randomly have more or less than others? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5jg181/eli5_how_do_pharmaceutical_companies_ensure_each/ | {
"a_id": [
"dbfv3ak",
"dbg49gs",
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"score": [
4,
2,
2
],
"text": [
"They design the mixing apparatus and procedures to blend properly and they test to make sure there are no spots in the mix which are not properly blended. Ingredients are chosen to be compatible in the ... | [] | [] | [
[
"http://www.pharmamanufacturing.com/articles/2012/001/",
"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3581660/"
],
[],
[]
] | ||
9ok3rj | how is this new camera that captures light at 10 trillion fps able to do that? | And wouldn't you think that 10 trillion frames per second would warrant faster than light speed? What sort of method is this camera using? [Here is a link](_URL_0_) to one of many articles about this camera. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9ok3rj/eli5_how_is_this_new_camera_that_captures_light/ | {
"a_id": [
"e7uottu",
"e7uouw5"
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"score": [
2,
2
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"text": [
"Can't say I know how many photons hit an area the size of the sensor per second, but I'd imagine it's more than the FPS of this camera by a long shot. All its doing is measuring photons hitting a sensor at a faster rate than... | [] | [
"https://www.nextbigfuture.com/2018/10/time-freezing-camera-at-10-trillion-frames-per-second.html"
] | [
[],
[]
] | |
1moa4o | How did masters of foreign slaves deal with the language barrier? | I'm particularly thinking of the first waves of such slaves into a society, before there would have been a lingua fraca or contact shared by slaver and enslaved society. E.G. perhaps the first German slaves that Rome conquered. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1moa4o/how_did_masters_of_foreign_slaves_deal_with_the/ | {
"a_id": [
"ccb66ne",
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"score": [
22,
6,
3
],
"text": [
" Generally, communication was pretty simple - go there, clean that, harvest this, etc. As a result, slaves were really only required to know a very basic and limited section of a language - until they... | [] | [] | [
[],
[],
[]
] | |
24r6c9 | who is paying for the search for malaysia m370 | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/24r6c9/eli5who_is_paying_for_the_search_for_malaysia_m370/ | {
"a_id": [
"ch9vjmi",
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"score": [
14,
3,
8
],
"text": [
"Primarily China, Australia, and the US, the three wealthy countries with citizens on board.",
"Generally the expense (and primary responsibility for coordination) is borne by the closest country to... | [] | [] | [
[],
[],
[]
] | ||
6urlko | Girlfriends Grandparent's have negatives of Mussolini's death and post mortem body. How valuable are pictures like these to historians? | My girlfriend came back from visiting her grandparents and according to her they own a set of negatives that were taken by a family friend for intelligence purposes who later passed them to her great grandfather for keeping. I doubt the family would ever want to donate them or sell them to a museum at a low price due t... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6urlko/girlfriends_grandparents_have_negatives_of/ | {
"a_id": [
"dlvcn1i",
"dlvh0dd"
],
"score": [
84,
42
],
"text": [
"This is fascinating. Do you have more details on how they came to be in her possession? The relationship between the photographer and Mussolini? What kind of \"intelligence\" were they involved in? What kind of condition a... | [] | [] | [
[],
[]
] | |
61zkyk | why is 36.7 degrees celcius the perfect temperature for a shower, but 30 degree weather is too hot? (if you're irish like me that is) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/61zkyk/eli5_why_is_367_degrees_celcius_the_perfect/ | {
"a_id": [
"dfiid53"
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"score": [
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"text": [
"You shower for maybe twenty minutes at a time, which is enough to warm your outer body temperature and it feels warm and comfortable but not enough time to hugely affect your internal temperature. If you spend too long in the hot water, you might... | [] | [] | [
[]
] | ||
3zoirr | why was the 6th commandment often ignored by christians throughout history? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3zoirr/eli5_why_was_the_6th_commandment_often_ignored_by/ | {
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"score": [
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3,
4
],
"text": [
"As it is written, There is none righteous, no, not one: There is none that understandeth, there is none that seeketh after God. Romans 3:10-11 \n\n\n",
"... | [] | [] | [
[],
[],
[],
[
"https://youtu.be/CE8ooMBIyC8?t=4m50s"
],
[]
] | ||
3e8ymk | if your mail can't be searched without suspicion how do most people get caught shipping drugs? | If someone was sending pot, or cocaine, or whatever and there was no smell or visible evidence how would they be caught? Is there a process of screening packages that is legal? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3e8ymk/eli5_if_your_mail_cant_be_searched_without/ | {
"a_id": [
"ctcmkbz",
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"score": [
7,
2
],
"text": [
"because the drug sniffing dogs or the xray machines detects what could be drugs, so that gives reasonable suspicion. ",
"People who are caught shipping drugs are caught because there is reasonable suspicion their packag... | [] | [] | [
[],
[]
] | |
wz964 | Catholic persecution in Poland during Hitler's invasion | I just read on wikipedia that:
"Catholicism in Poland, the religion of the vast majority of the population, was severely persecuted during World War II, following the Nazi invasion of the country and its subsequent annexation into Germany. Over 3 million Catholics of Polish descent were murdered during the Invasion of... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/wz964/catholic_persecution_in_poland_during_hitlers/ | {
"a_id": [
"c5hrmua",
"c5hrxxp",
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"score": [
12,
12,
4
],
"text": [
"Not a specialist, but reporting based on what I've read:\n\nThe Nazis had it out for Polish Catholics, primarily because the Catholic Church was even at that point one of the support structures holdin... | [] | [] | [
[],
[],
[]
] | |
a5ya3o | Did the Romans know that the Great Pyramid of Giza was 2500 year old? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/a5ya3o/did_the_romans_know_that_the_great_pyramid_of/ | {
"a_id": [
"ebqfmhn",
"ebqjuwr"
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"score": [
89,
1556
],
"text": [
"Here's a link to a previous thread that asks a similar question.\n\n_URL_0_",
"The Greeks, and through them the Romans, were aware that Egyptian civilization and its monuments were very ancient. Their sense of just *... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/19hrhe/how_did_the_romans_view_ancient_egypt/"
],
[]
] | ||
78x5jy | If money was no object, how fast could I get from San Francisco to New York City in 1860? | Say it's me and a couple dozen of my buddies, and we're lugging around stuff in crates too. We're super rich and we need to cross the country ASAP. I assume their isn't a railway that links the two cities, so would we have to alternate between rails and stagecoaches and boats and horses and stuff? PS I get that the ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/78x5jy/if_money_was_no_object_how_fast_could_i_get_from/ | {
"a_id": [
"doxlcvx",
"doy7x1e"
],
"score": [
198,
26
],
"text": [
"In 1860 you would have a few options.\n\nThe slowest overland route would be to hire a staff of guides and teamsters to guide your wagon train. Depending on time of year you’d either take the northern route through Salt L... | [] | [] | [
[],
[]
] | |
5gi1wr | What happened to Prussia after World War I? Was it dissolved like the Holy Roman Empire, or was its territory conquered by various powers during/after World War I? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5gi1wr/what_happened_to_prussia_after_world_war_i_was_it/ | {
"a_id": [
"dasf9ft"
],
"score": [
2
],
"text": [
"After World War I, the Kingdom of Prussia was abolished, along with the rest of the German Empire. In its place was the Free State of Prussia, which included most of the territory of the old Kingdom of Prussia, minus the bits that were lost to Ge... | [] | [] | [
[]
] | ||
37jar5 | why vevo is like a "subreddit"' on youtube? why don't they just make their own website and feature the artists there? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/37jar5/eli5_why_vevo_is_like_a_subreddit_on_youtube_why/ | {
"a_id": [
"crn5gvc",
"crn5jfg"
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"score": [
3,
2
],
"text": [
"I'd imagine it is much cheaper to piggy back on someone's established work(coding, marketing and of course it's established name in popculture) than to venture into a competing website starting from scratch. ",
"Why rein... | [] | [] | [
[],
[]
] | ||
2o9pwg | what are the pros and cons of s free trade agreement between the eu and the united states? why are some people opposing the deal? | I've been under the impression that free trade agreements are usually good for everyone involved. Why wouldn't people want this deal to go through? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2o9pwg/eli5_what_are_the_pros_and_cons_of_s_free_trade/ | {
"a_id": [
"cml44oe"
],
"score": [
5
],
"text": [
"Free trade agreements are absolutely not good for everyone, though many economists agree that they're better for most people. \n\nThe main two pros of a free trade agreement are that they reduce regulatory burden/arbitrage, and that they ensure ... | [] | [] | [
[]
] | |
8x28wz | why do heights feel taller when looking from the top down than from the ground up? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8x28wz/eli5_why_do_heights_feel_taller_when_looking_from/ | {
"a_id": [
"e208wt6",
"e20do87",
"e20hq6q"
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"score": [
60,
12,
2
],
"text": [
"It's a lot more than just the height differences. It's your sense of danger kicking in coupled with your enhanced ability to actually perceive height because there's more to compare it to.\n\nWhen you... | [] | [] | [
[],
[],
[]
] | ||
35oi55 | how do people intercept data when you're using public wifi? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/35oi55/eli5_how_do_people_intercept_data_when_youre/ | {
"a_id": [
"cr6bbo9",
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"score": [
8,
3
],
"text": [
"I would say it's more like they eavesdrop on it than intercept it. Your data is still reaching the router like they weren't there. \r\r\rThe WiFi router and your device just broadcast the data out there in all directions. It... | [] | [] | [
[],
[]
] | ||
b8nvh7 | What recreational drugs, aside from alcohol, were available in 1500s Europe? | and what was the cultural perception of them (including alcohol)? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/b8nvh7/what_recreational_drugs_aside_from_alcohol_were/ | {
"a_id": [
"ek0i0j1"
],
"score": [
46
],
"text": [
"Very little other than alcohol in widespread use in 1500. By the mid-17th century, you've got tobacco and coffee.\n\nPsilocybin-containing and other \"magic mushrooms\" were always present, and there's some suggestion of use as far back as 6000 ... | [] | [] | [
[
"https://www.jstor.org/stable/2873084",
"www.jstor.org/stable/2873084",
"www.jstor.org/stable/20003209",
"www.jstor.org/stable/44440627",
"https://www.jstor.org/stable/44440627",
"www.jstor.org/stable/4252602",
"http://www.jstor.org/stable/4252602",
"https://www.jstor.org/stable/20... | |
1jkn82 | could a human survive temporarily being swallowed by a large animal like a shark or whale? what would the process of death be like, and could they survive if they weren't bitten/crushed in the mouth? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1jkn82/eli5_could_a_human_survive_temporarily_being/ | {
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2
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"text": [
"The first thing that would kill someone who is swallowed alive is probably lack of oxygen. Assuming you're a scuba diver being swallowed by a whale, if you c... | [] | [] | [
[],
[],
[],
[
"http://newsfeed.time.com/2013/05/07/man-swallowed-by-hippo-lives-to-write-about-it/"
],
[]
] | ||
a2pkpi | Is there a material which reflects or absorbs radio waves in a way that is visible to the human eye? | Coming up short in my searches, I have a feeling I'm asking a stupid question or one that's too ignorant for Google to figure out for me. | askscience | https://www.reddit.com/r/askscience/comments/a2pkpi/is_there_a_material_which_reflects_or_absorbs/ | {
"a_id": [
"eb1i65z",
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"score": [
8,
2,
3,
3
],
"text": [
"Well for one, the human eye *can't* percieve radio waves, so there's no way for us to tell whether they've been reflected.\n\nIf they are absorbed, by definition, the human eye can... | [] | [] | [
[],
[],
[],
[]
] | |
8c1xai | why do chinese "lions" not look anything like actual lions? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8c1xai/eli5_why_do_chinese_lions_not_look_anything_like/ | {
"a_id": [
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34,
2,
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"text": [
"Here's what I remember from my art history days...\n\nIn Chinese art there is a \"right\" way to do pretty much everything from holding the brush to applying ink to paper. This ... | [] | [] | [
[],
[],
[],
[]
] | ||
37wavl | how is it legal for certain movies/mini series to show child nudity? | I am finishing up the mini series based on Herman Wouk's novels "The Winds of War" and the sequel "War and Remembrance." (I HIGHLY recommend everyone viewing these films at the earliest possibility, they are incredibly well produced and very historically accurate.) There comes a point at Auschwitz where the prisoners a... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/37wavl/eli5how_is_it_legal_for_certain_moviesmini_series/ | {
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"score": [
9,
5,
3,
2,
2
],
"text": [
"Child nudity is illegal if it appeals to the prurient interest -- that is, for sexual gratification. Child nudity is legal if it is for a legitimate artistic,... | [] | [] | [
[],
[],
[],
[],
[]
] | |
3iqzi7 | why presidential candidates are never scientists or doctors? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3iqzi7/eli5_why_presidential_candidates_are_never/ | {
"a_id": [
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"text": [
"... | [] | [] | [
[],
[],
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[]
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b9skq8 | why do drinks like pepsi, wine and other natural/food colored stuff turn to the same color when we pee? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/b9skq8/eli5_why_do_drinks_like_pepsi_wine_and_other/ | {
"a_id": [
"ek6kqb7",
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"score": [
4,
2
],
"text": [
"The things you drink are broken down by acid and enzymes in your gut, and the components absorbed in to your blood, which is immediately run through your liver, where further chemical breakdown takes place. There is no \"wi... | [] | [] | [
[],
[]
] | ||
39123q | To what extent is the idea of an ancient "Proto-Indo-European" pantheon supported today? | Hello scholars! I'm not certain this is necessarily a "history" question, but I'll shoot anyway.
So, as an amateur enthusiast in myths and ancient religions, I just spent the last day or so reading up on the idea of a "Proto-Indo-European" pantheon; a synthesis of the ancient religions of all Indo-European peoples, me... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/39123q/to_what_extent_is_the_idea_of_an_ancient/ | {
"a_id": [
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],
"text": [
"I mean, it's a theory that is supported by the thinnest strands of similarities between stories told by Indo-European language groups. Not every group has the same stories, but there are similar enough stories to postulate ... | [] | [
"http://en.wikipedia.org/wiki/Proto-Indo-European_religion",
"http://mudrac.ffzg.unizg.hr/~rmatasov/PIE%20Religion.pdf",
"http://www.ceisiwrserith.com/pier/index.htm",
"http://piereligion.org/"
] | [
[],
[]
] | |
45a6x8 | why is marijuana bad for your sleep when some people use it to relax/fall asleep. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/45a6x8/eli5_why_is_marijuana_bad_for_your_sleep_when/ | {
"a_id": [
"czwabji",
"czwabkr",
"czwazk6"
],
"score": [
4,
2,
6
],
"text": [
"Short answer is it affects your deep sleep, so it's kinda like only taking a light nap, for your entire sleep duration. Sure, you have been resting the whole time, but you haven't effectively been truly... | [] | [] | [
[],
[],
[]
] | ||
362zpo | why do we have lawns? wouldn't it be better if we all had gardens instead? | I understand it's aesthetically pleasing but it is such a waste of water and space. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/362zpo/eli5_why_do_we_have_lawns_wouldnt_it_be_better_if/ | {
"a_id": [
"cra7r6p",
"cra8ah1",
"cra8det",
"cradpkm"
],
"score": [
10,
6,
2,
2
],
"text": [
"Simple reason is that gardens are far more effort. Flowers, herbs, vegetables, etc require far more micro-management.\n",
"This would be good question to ask over at r/histori... | [] | [] | [
[],
[],
[],
[]
] | |
39byp2 | What do we know would have been the consequences or implications of Germany winning the Great War/World War I? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/39byp2/what_do_we_know_would_have_been_the_consequences/ | {
"a_id": [
"cs23s9v"
],
"score": [
10
],
"text": [
"[Did Germany have a Treaty in mind if the Allies surrendered?] (_URL_2_)\n\n[If the Schlieffen Plan had succeeded, what were Germany's plans for France?] (_URL_1_)\n\n[What were the territorial objectives of the Central Powers?] (_URL_0_)\n\nI'v... | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/34v81a/what_were_the_territorial_objectives_of_the/",
"https://www.reddit.com/r/AskHistorians/comments/33258e/if_the_schlieffen_plan_was_successful_what_would/",
"http://www.reddit.com/r/AskHistorians/comments/2x92cm/did_the_german_empire_have_a_similar_... | ||
42si8s | why do well call countries spain and germany when they call themselves espana and duetchland | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/42si8s/eli5_why_do_well_call_countries_spain_and_germany/ | {
"a_id": [
"czcq6n2"
],
"score": [
4
],
"text": [
"Different language origins and culture. \nThe polish name for Germany translates to \"the mute ones\" because Poland could never really communicate with them (as opposed to other slavs). The german name for Germany comes from the old german word ... | [] | [] | [
[]
] | ||
5zpwu8 | What's the point of quantum teleportation, if you need to physically move an entangled particle to the desired end location? Couldn't you simply move the original particle instead? | I just watched [minutephysics' video on quantum teleportation](_URL_0_). One question I've always had it doesn't answer is: why bother? You need to physically move a bunch of matter to the location you want to teleport to, why not just move the thing you wanted there instead? | askscience | https://www.reddit.com/r/askscience/comments/5zpwu8/whats_the_point_of_quantum_teleportation_if_you/ | {
"a_id": [
"df01mlc",
"df0u8ee"
],
"score": [
18,
3
],
"text": [
"The point is that you are able to send a quantum state to me *without* sending me any quantum objects, only classical signals, which is exceptional considering neither you nor I can *know* the quantum state.\n\nThe puzzle i... | [] | [
"https://www.youtube.com/watch?v=DxQK1WDYI_k"
] | [
[],
[]
] | |
exzsg2 | Why do we fossil records of sharks if their skeletons are mostly cartilage? | Are the conditions for preserving an ancient shark skeleton the same as for other prehistoric species? | askscience | https://www.reddit.com/r/askscience/comments/exzsg2/why_do_we_fossil_records_of_sharks_if_their/ | {
"a_id": [
"fgekj2f",
"fges6zn"
],
"score": [
29,
11
],
"text": [
"You're incorrectly assuming shark skeletons won't preserve as fossils at all because they're not bone.\n\nWe have fossil traces of very soft forms of life from well before sharks existed. There are impressions of 2.1 billi... | [] | [] | [
[
"https://www.wired.com/2010/06/early-multicellularity/"
],
[
"https://www.semanticscholar.org/paper/Carcharodon-megalodon-from-the-Upper-Miocene-of-%2C-%3A-Bendix-Almgreen/b6e4c05710ce241b12d83754024e1693809ea08d",
"https://upload.wikimedia.org/wikipedia/commons/thumb/a/a5/Megalodon_teeth.png/800p... | |
4cut7s | Why did other countries even bother with navies, when it was clear they couldn't come close to beating the British? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4cut7s/why_did_other_countries_even_bother_with_navies/ | {
"a_id": [
"d1lm1oz",
"d1lm6p3",
"d1lmbud",
"d1ln1ak",
"d1lojnl"
],
"score": [
8,
7,
8,
5,
5
],
"text": [
"Indeed, it is still a mystery to me why the Kaiser even bothered with the time and effort into building a fleet for battle just to see it turned away again an... | [] | [] | [
[],
[],
[],
[],
[
"https://en.wikipedia.org/wiki/Alfred_Thayer_Mahan"
]
] |
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