q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
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69isy7 | why do storm systems sometimes come from different directions? | We just had a storm come from the Southwest moving Northeast and now where have one coming from the Northwest moving Southeast. What dictates the direction a storm will move? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/69isy7/eli5_why_do_storm_systems_sometimes_come_from/ | {
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"I can't really explain it very well and plus I am not even sure if I am right but I think that it is because there are different circulation cells that are spread throughout the earth. So air rises near the equator, flows up to the poles, comes d... | [] | [] | [
[]
] | |
afii7a | how is data actually transferred through cables? how are the 1s and 0s moved from one end to the other? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/afii7a/eli5_how_is_data_actually_transferred_through/ | {
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1fjs8z | how do shows like masterchef conduct so many interviews of the cooks before something is about to happen? | Do they pull people aside every few minutes to find out what is going through their heads or is it all staged afterwards? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1fjs8z/eli5_how_do_shows_like_masterchef_conduct_so_many/ | {
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"Just from watching, it definitely seems that the interviews are conducted afterwards. Possibly long after, when the producers develop a storyline from the footage they shot. \n\nYou can watch closely for hair, makeup, & clothing changes to see ... | [] | [] | [
[]
] | |
3ei05n | Why is that programs need to be ported between operating systems in order in to function? What goes on at the programming level to require this? | askscience | http://www.reddit.com/r/askscience/comments/3ei05n/why_is_that_programs_need_to_be_ported_between/ | {
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"Not all programs require any changes to go between operating systems. For an example, I write scientific software (with no graphics, purely terminal interfa... | [] | [] | [
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"https://en.wikipedia.org/wiki/Cocoa_(API\\)",
"https://en.wikipedia.org/wiki/Application_programming_interface",
"https://en.wikipedia.org/wiki/Microsoft_Foundation_Class_Library"
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[],
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"https://en.wikipedia.org/wiki/X86_instruction_listings",
"https://en.wikipedia.org/wiki/ARM_archi... | ||
6qqspw | Why did people migrate to the Pacific Islands, and did they know there were islands to migrate to? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6qqspw/why_did_people_migrate_to_the_pacific_islands_and/ | {
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"To answer the first part of your question: we don't know-- at least we don't always know. Sometimes it was because of population/resource pressure, though this is not always the case as most islands were not near their carrying capacities befor... | [] | [] | [
[]
] | ||
f4xjm5 | why do elastic material on clothes get crunchy when it gets old? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f4xjm5/eli5_why_do_elastic_material_on_clothes_get/ | {
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"Rubber and stuff has chemicals and compounds it it that help make it stretchy. These can either evaporate over time, or solidify if not streched. As an example, the moon Rover the astronauts used has wire mesh wheels because in hard vaccum ru... | [] | [] | [
[
"http://www.collectspace.com/news/news-120508a.html"
]
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2iak9s | If time is a dimension like space, does it mean that future and present exist at the same time? | Does it mean that I am already dead? Or is time being created on a continuous basis? If yes how much is created and what creates it? | askscience | http://www.reddit.com/r/askscience/comments/2iak9s/if_time_is_a_dimension_like_space_does_it_mean/ | {
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"It is a dimension that we are moving through involuntarily. To say that the past and future exist at the same time might not be well posed -- think about dimensions of space for c... | [] | [] | [
[],
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"http://en.wikipedia.org/wiki/Growing_block_universe",
"http://en.wikipedia.org/wiki/Presentism",
"http://en.wikipedia.org/wiki/Eternalism_(philosophy_of_time)"
],
[]
] | |
2d1l6a | what is an aneurysm? can epilepsy cause an aneurysm? | My dad was epileptic, had an aneurysm, and passed away. Can epilepsy cause an aneurysm to occur? Or are they unrelated? Is there a way to prevent or stop an already occurring aneurysm? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2d1l6a/eli5_what_is_an_aneurysm_can_epilepsy_cause_an/ | {
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"An aneurysm is when there is a blood-filled bulge in the wall of a blood vessel. Epilepsy is a long term history of seizures; the seizur... | [] | [] | [
[],
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"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2426305/"
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3mejyz | How did navies operate in the Middle Ages? | Playing lots of Crusader Kings and watching Game Of Thrones, I couldn't help but notice in both those situations, members of the nobility seem to have their own navies at their disposal. Is that how it worked in real life, lords would have a cadre of ships at their beck and call. Or was it more of a "Hey merchant/shipw... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3mejyz/how_did_navies_operate_in_the_middle_ages/ | {
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"I don't have a comprehensive answer to this, after all, the Middle Ages is a long period, and there would have been a lot of variation as you say, but it ... | [] | [] | [
[
"http://www.theguardian.com/uk-news/2015/jul/27/henry-v-agincourt-fleet-invasion-france",
"http://www.agincourt600.com/26-january-1-february-1415-commission-for-ships-crews-and-a-muster-of-soldiers-going-to-ireland/"
],
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... | |
3mkmgz | does learning a new language cause you to have a different accent on your first language? | As I said in the title, Does learning a new language cause you to have a different accent on your first language? Are there different parts of your memory/language area in your brain that keeps them separate? Any help with this question is much appreciated! | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3mkmgz/eli5_does_learning_a_new_language_cause_you_to/ | {
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"Short answer is no. Learning a new language does not *necessarily* give you an accent while speaking your original language. \n\nAccents are believed to be a result of two factors. The first is one's \"articulatory settings\", or the default posi... | [] | [] | [
[
"https://youtu.be/TDxFrwkiHIw"
]
] | |
2sguwb | how do investigative journalism publications successfully conduct investigations when they don't have police powers? | For instance, in the UK there's a publication called Private Eye (probably closest Britain has to Charlie Hebdo) that is famous for uncovering scandals. Even now they have an article about how they've found out the Attorney General has loads of offshore offices to avoid tax. My question is how do they find out all of t... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2sguwb/eli5_how_do_investigative_journalism_publications/ | {
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"plenty of legal ways of obtaining information\n\n1) ask people\n\n2) ask pissed off former employees\n\n3) dumpster diving\n\n4) look thru published records, look for inconsistencies"
]
} | [] | [] | [
[]
] | |
cewckl | How did people start smoking tobacco, and why did people decide to smoke it? How many other things did people try to smoke and what made them settle on tobacco? | I enjoy the occasional cigar and the other day was pondering about the first people to smoke tobacco and why, with the countless other plants out there, did people stick with tobacco. Thanks in advance! | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/cewckl/how_did_people_start_smoking_tobacco_and_why_did/ | {
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"At the most basic level, the reasons for smoking tobacco are straightforward: It causes short-term relaxation without causing drowsiness, and stimulation without anxiety. It improves fine motor skills and short-term memory, and increases attenti... | [] | [] | [
[]
] | |
14vv07 | How did the CIA conduct counter-intelligence operations during the Cold War? Were Soviet 'moles' a big problem and how did the intelligence service weed them out? | I've been starting some research regarding the CIA during the Cold War, especially how they tried to deal with Soviet inside men. I'm especially curious to hear insight from our historians on how the CIA sought to address these issues. I'm especially curious how CIA operatives did internal house cleaning and how suspec... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/14vv07/how_did_the_cia_conduct_counterintelligence/ | {
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"Basically, they didn't. the CIA has always been bad at counterintelligence. guys like kim philby (yes, he was british, but he was evaluated by the CIA) and... | [] | [] | [
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1j15ae | Is there any historical precedent for a pre-modern culture constructing elaborate mechanical traps (as seen in many films such as "Goonies" or in various "Indiana Jones" films) that are disarmable by an artifact or by a sequence of actions? Where does this common film trope come from? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1j15ae/is_there_any_historical_precedent_for_a_premodern/ | {
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"The only example of a possible booby trapped tomb that I am aware of is the Qin Emperor's tomb, which supposedly has mechanical crossbows primed to shoo... | [] | [] | [
[],
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"http://en.wikipedia.org/wiki/Roman_d%27En%C3%A9as"
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"http://www.activemind.com/Mysterious/topics/oakisland/"
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3h8oze | If a caterpillar suffers an appendage loss, or similar type of damage, does the damage remain once they become butterflies and moths? | askscience | http://www.reddit.com/r/askscience/comments/3h8oze/if_a_caterpillar_suffers_an_appendage_loss_or/ | {
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"[Caterpillars retain imaginal disks during metamorphosis, but mostly digest themselves.](_URL_0_)\nHypothesis: damage to imaginal disks may result in deformation or absence of the resulting tissue in the butterfly. Damage to... | [] | [] | [
[
"http://www.scientificamerican.com/article/caterpillar-butterfly-metamorphosis-explainer/"
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[]
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fwuyem | Why can't we use live SARS-CoV-2 as a Covid-19 vaccine? | The SARS-CoV-2 virus infects the upper and lower respiratory tract in humans. As far as I understand, it does not infect other parts of the body, e.g. muscle tissue. So I would expect that if the virus is injected into muscle tissue, it should help the recipient develop immunity, which could then protect them from a co... | askscience | https://www.reddit.com/r/askscience/comments/fwuyem/why_cant_we_use_live_sarscov2_as_a_covid19_vaccine/ | {
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f279w9 | how does plastic window wrap do such a good job at insulating windows? it's just a thin layer of tight plastic | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f279w9/eli5_how_does_plastic_window_wrap_do_such_a_good/ | {
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"Air is very good at convection and very bad at conduction.\n\nBut what does that mean? ... | [] | [] | [
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45t9ip | how can gas giants exist if the average temperature of space falls below the boiling point of both helium and hydrogen (i.e. what for the most part makes up the gas planets we know)? | *Reeeeeally* eli5, please; am not a scientist, much less an astrophysicist.
Does it have to do with the atmospheric pressure of these individual planets rendering the boiling point lower than normal? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/45t9ip/eli5_how_can_gas_giants_exist_if_the_average/ | {
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"The temperature of empty space may be low, but the temperature of the gas giants isn't the same thing. Just like the temperature of the Earth is not the same as the space around it. Gas giants get ene... | [] | [] | [
[],
[],
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"https://en.wikipedia.org/wiki/Phase_rule"
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27s82t | Does adding more grounds to drip coffee make the caffeine content stronger? | Hello, I've had an ongoing debate with a colleague who regularly adds excess grounds (approximately two cups) of medium roast Green Mountain coffee to a six cup drip coffee pot.
Not only does their coffee taste bitter, but they typically also have grounds seep into the pot while brewing (personal pet peeve).
Did some... | askscience | http://www.reddit.com/r/askscience/comments/27s82t/does_adding_more_grounds_to_drip_coffee_make_the/ | {
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"Caffeine is very, very soluble. Roughly 2.2 grams per 100mL of water at 25 deg C.\n\nYour average cup of coffee has perhaps 100mg in 250mg. A \"saturated\" cup of coffee would h... | [] | [] | [
[],
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bwhvc3 | how come your car's aircon needs topped up and recharged, but your fridge in your kitchen does not? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bwhvc3/eli5_how_come_your_cars_aircon_needs_topped_up/ | {
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"Your fridge is a pretty well closed off system where all the joints can be firmly sealed, and then it never moves for 10-20 years. \n\nYour car has a lot more flexible hoses and seals because it has to move the refrigerant ... | [] | [] | [
[],
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4jlxev | Self Castration in early Christianity. | Just gonna flag this as NSFW just in case. So I'm aware of the verse in Matthew 19:12 which says that some people are "made themselves eunuchs for the sake of the kingdom of heaven" and that Origen of Alexandria was one of these people who castrated himself. What was up with this and how did the church come round to a ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4jlxev/self_castration_in_early_christianity/ | {
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"Historians are somewhat divided about whether the Origen story is true. Henry Chadwick doubts that it is, because Origen's commentary on the passage does not reflect a literal interpretation of the verse in any way. Others ... | [] | [] | [
[],
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"http://www.newadvent.org/fathers/3801.htm",
"http://www.jstor.org/stable/1583869",
"https://www.reddit.com/r/AskHistorians/comments/3orqfm/did_the_valesians_really_castrate_their_guests/"
]
] | |
j4p0p | li5: mlb trading, after the trade deadline has passed. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/j4p0p/li5_mlb_trading_after_the_trade_deadline_has/ | {
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"The Major League Baseball Trade Dealing is July 31st. After this, players can still be traded, but with limitations.\n\nAugust 31st is called the \"waiver\" trade deadline. Any player can be traded before August 31st, but first they have to \"cle... | [] | [] | [
[]
] | ||
41hfvb | Regarding the expansion of the universe, is the "edge" of the universe moving away from the absolute center (like a soap bubble) or is all of space uniformly expanding (like how a rubber band stretches)? | askscience | https://www.reddit.com/r/askscience/comments/41hfvb/regarding_the_expansion_of_the_universe_is_the/ | {
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"It is the later (uniform expansion like a rubber sheet). As far as we know the universe may be infinite and have no edge."
]
} | [] | [] | [
[]
] | ||
1xzo5v | will the ice in my driveway melt faster if i break it up? | We usually chip the ice in my driveway after a snow/ice storm. I'm not convinced it helps the driveway melt faster, but it sure does wreck my shoulders.
Anyone care to tell me if there is any benefit to this practice? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1xzo5v/will_the_ice_in_my_driveway_melt_faster_if_i/ | {
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"well, yes, but probably only slightly. More surface area means more of the ice chunk is exposed to warmer air. ",
"Yes, breaking up the ice will make it melt faster. Warm air and the warm ground ... | [] | [] | [
[],
[],
[]
] | |
3g7rns | why does the government prioritize subsidizing meat/dairy and not healthier foods like veggies and starches? | I would like to know how this benefits the economy, since we are also paying the cost for peoples unhealthy eating in health care expenses. Thanks. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3g7rns/eli5why_does_the_government_prioritize/ | {
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"text": [
"What makes you think starches are healthier than dairy?"
]
} | [] | [] | [
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9mqmxw | why do posts get archived? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9mqmxw/eli5_why_do_posts_get_archived/ | {
"a_id": [
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"text": [
"The focus on this site is on relevance and recency. Things that are newer will be prioritized over things that are older. By archiving discussions, you ensure that the conversation must be focused on things that have recently been posted."
]
} | [] | [] | [
[]
] | ||
13wyx3 | Trying to understand Proton ionization | I am familiar with electron ionization, but in another thread I read about proton ionization. As per my understanding, proton ionization is when a fast moving protons collide with a nucleus. But from my rather limited understanding, that would form an isotope, which would most probably be unstable and then decay into t... | askscience | http://www.reddit.com/r/askscience/comments/13wyx3/trying_to_understand_proton_ionization/ | {
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"text": [
"Are you asking about making a cation like Ag^+ ? If this is the case, the proton strikes one of the electrons in the cloud that is surround the nucleus. If it has enough initial energy it will knock one of the electrons out of the orbit, making ... | [] | [] | [
[]
] | |
3xwcik | Why doesn't the body synthesize proteins from carbohydrates instead of turning them into lipids? | From my rudimentary understanding of biology I thought that macromolecules, excluding nucleic acids, could be turned into one of the other molecules. So why doesn't the body synthesize more proteins at rest in a way similar to large cats which can produce muscle mass with very little effort? | askscience | https://www.reddit.com/r/askscience/comments/3xwcik/why_doesnt_the_body_synthesize_proteins_from/ | {
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"um, you need the proper atoms to turn one macro molecule into another. Carbohydrates have NO nitrogen atoms in them. Proteins are linked chains of amino acids which contain an amino group - which has a nitrogen atom in it. ... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Myostatin",
"http://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.1001871",
"https://en.wikipedia.org/wiki/Essential_amino_acid"
]
] | |
1k8rvz | Were the Europeans stunned to find Christianity in places like Ethiopia and Eritrea? | According to Wikipedia:
> Both the Ethiopian and Eritrean Orthodox Churches profess their own distinctive customs, a unique canon of the Bible and distinctive architectures. Neither of these communities of Christians in sub-Saharan Africa are the product of European missionary work, but were founded prior to mission... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1k8rvz/were_the_europeans_stunned_to_find_christianity/ | {
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"text": [
"The Europeans had legends, (the legends of \"Prester John\") of a Christian kingdom somewhere in Asia or Africa. When the \nPortuguese discovered Christian kingdoms in Ethiopia and Eritrea, they were very excited, and hope... | [] | [] | [
[],
[]
] | |
4qoybq | axiom of choice | Trying to wrap my head around this concept. If someone could kindly duh it down for me I would be grateful.
Thanks! | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4qoybq/eli5axiom_of_choice/ | {
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"Imagine you have a laundry basket filled with an infinite number of white socks. The axiom of choice says that you can pick out all th... | [] | [] | [
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[],
[],
[],
[],
[
"https://cornellmath.wordpress.com/2007/09/13/the-axiom-of-choice-is-wrong/"
]
] | |
2o74bl | why is nasa's space/launch center based in florida? | As compared to any other state. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2o74bl/eli5why_is_nasas_spacelaunch_center_based_in/ | {
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"- Spacecraft launch eastward, so that the Earth's rotation helps them get into orbit. Any space launch center will want a giant empty area to the East, so that nobody will get hurt if a rocket explodes... | [] | [] | [
[],
[
"http://www.scientificamerican.com/article/space-shuttle-weather-florida/"
],
[]
] | |
x2875 | Was Infanticide legal in Rome? | Context:
_URL_0_
| AskHistorians | http://www.reddit.com/r/AskHistorians/comments/x2875/was_infanticide_legal_in_rome/ | {
"a_id": [
"c5ijldi"
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"text": [
"It depends what period in Rome's history you're talking about. Remember that Rome survived over 1,200 years from its founding in 753BC to its sack by Vandals in 455AD.\n\nBut, for most of that period, infanticide wasn't **il**legal.\n\nOn the co... | [] | [
"http://www.reddit.com/r/AskHistorians/comments/wze97/what_was_the_mainstream_roman_take_on_the_god_of/c5iipi2?context=3"
] | [
[
"http://www.historyguide.org/ancient/12tables.html",
"http://www.wikigender.org/index.php/History_of_Infanticide#Ancient_Greece_.26_Rome"
]
] | |
3co9xf | Why isn't sunlight just the hydrogen and helium emission lines? | The emission spectrum for hydrogen and helium only include a few lines of visible light. White sunlight seems to include the full continuum of wavelengths minus some absorption lines due to the atmosphere. Why isn't sunlight just a few distinct emission lines? | askscience | http://www.reddit.com/r/askscience/comments/3co9xf/why_isnt_sunlight_just_the_hydrogen_and_helium/ | {
"a_id": [
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"score": [
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24,
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"text": [
"Because the sun is really hot, and hot things emit a characteristic blackbody spectrum.",
"Emission lines are due to electrons within atoms moving between energy states. This is why the energy of t... | [] | [] | [
[],
[],
[]
] | |
3p81jg | What would be a good modern book on Nebuchadnezzer or Neo-Babylon? | I know very little about Babylonian History and would like to have a grasp on it. I want to know about Nebuchanezzer primarily but a general history could be interesting. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3p81jg/what_would_be_a_good_modern_book_on/ | {
"a_id": [
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"text": [
"For a general history of the region I recommend [A History of the Ancient Near East: ca 3000-323 BC](_URL_0_) by Marc van der Mieroop. I'm reading it currently after seeing it on the [AskHistorians Book List](_URL_1_) and th... | [] | [] | [
[
"http://www.worldcat.org/title/history-of-the-ancient-near-east-ca-3000-323-bc/oclc/266666883&referer=brief_results",
"https://www.reddit.com/r/AskHistorians/wiki/books/middleeast#wiki_ancient_near_east"
],
[]
] | |
icn0q | What is the difference between the beam from a laser pointer and a visible laser beam. | Is the visible beam simply more powerful, or is there more of a difference? | askscience | http://www.reddit.com/r/askscience/comments/icn0q/what_is_the_difference_between_the_beam_from_a/ | {
"a_id": [
"c22q5cs"
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"score": [
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"text": [
"It depends on the color of the laser. A 5 mW green laser can have a visible beam at night, but a violet one will have to be around 50 mW just to have a weak beam and a red one even higher.\n\nThere are two factors that contribute to this: the sen... | [] | [] | [
[]
] | |
1he1o8 | Were there any notable philosophers involved in alchemy? | Or at least theorized about it? (by notable I mean, Plato, Pythagoras, all those notables dudes) | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1he1o8/were_there_any_notable_philosophers_involved_in/ | {
"a_id": [
"catviqa"
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"score": [
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"text": [
"I'm not sure if you would consider him a 'philosopher', but Isaac Newton did extensive work in Alchemy. While not specifically dedicated to Newton's Alchemical work, the biography *Never at Rest* by Richard Westfall gives it an extensive treatmen... | [] | [] | [
[]
] | |
1p3qn3 | How is Centripetal Force possible? | This may be one of the dumbest question to ever surface this subreddit, but I have a question about Centripetal Force in physics that's been making me cringe all day.
So today, my gr.12 physics teacher officially taught us Centripetal Force along with all its formulas. This begot some disputations among my friends and... | askscience | http://www.reddit.com/r/askscience/comments/1p3qn3/how_is_centripetal_force_possible/ | {
"a_id": [
"ccykxkz",
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8,
4
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"text": [
"Remember that velocity is a vector quantity - it has a _speed_ (its magnitude) and direction. Acceleration is defined as change in velocity. Therefore you can have acceleration, even though there is no ... | [] | [] | [
[],
[],
[]
] | |
9065yk | Currently, India seems to have a big problem with sexual violence towards women, especially young women. Is this a recent development, or something that goes back a long time but wasn't really reported on until recently? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9065yk/currently_india_seems_to_have_a_big_problem_with/ | {
"a_id": [
"e2o30rn"
],
"score": [
83
],
"text": [
"It can be said that the problems with sexual violence in India are rooted in problems of how sexuality is perceived and how Indian society responds to sexuality in general . This is often problematic with the general perception of sexuality and ... | [] | [] | [
[]
] | ||
2dwsp2 | If you took an English person from 1314 and an English person from 1114 and got them to talk to each other would they think each other's speech patterns were odd? If "yes" would they still be able to easily understand each other? | When I read books that are a couple hundred years old the language seems strange and in parts hard to understand. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2dwsp2/if_you_took_an_english_person_from_1314_and_an/ | {
"a_id": [
"cjtzg9i"
],
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],
"text": [
"A good way to look at this is to take a look at the [sound changes that occurred from Old English to Middle English](_URL_0_). 1114 was around the *very* end of what we typically call Old English, and 1314 is fairly-early Middle English, enough ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Middle_English_phonology#Phonological_processes"
]
] | |
6jf6zm | how do you determine the quality of a classical music performance? if two musicians play a piece perfectly according to the sheet music, what makes one person a glen gould and another just really good? | I have a neighbor that is really good at piano and his wife is really good at violin. Like really really really good. Playing Rachmoninov good. Can sight read most things, play around with time signatures and all that. When I suggest that they should play pro or something they just laugh.
They play me the piece by a ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6jf6zm/eli5_how_do_you_determine_the_quality_of_a/ | {
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"score": [
14,
3,
2,
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2
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"text": [
"If a musician plays a piece perfectly according to the sheet music he is good technically but not musically. A good musician play sligh... | [] | [] | [
[],
[],
[
"https://www.ted.com/talks/benjamin_zander_on_music_and_passion"
],
[
"https://youtu.be/Wb3ws7tBtCs"
],
[],
[]
] | |
2s5iu9 | how do movies afford to destroy expensive cars in films? | Like the Fast Furious series and the Need for Speed movie. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2s5iu9/eli5how_do_movies_afford_to_destroy_expensive/ | {
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"text": [
"Movies have pretty high budgets and a lot of the cars destroyed are replicas. They wouldn't actually blow up a half million dollar Ferrari, but they could make a kit car that loo... | [] | [] | [
[],
[],
[],
[]
] | |
273vct | how did we decide there are 365 days in a year, 24 hours in a day, 60 minutes in an hour, and 60 seconds in a minute? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/273vct/eli5_how_did_we_decide_there_are_365_days_in_a/ | {
"a_id": [
"chx4pn6",
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"score": [
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"text": [
"Days in a year is fairly obvious; a day and a year are natural phenomena, so they were observed. Seconds per minute and minutes per hour came from the Babylonians, who used a base-60 counting system.\n\... | [] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/24-hour_clock",
"http://en.wikipedia.org/wiki/Hour#History",
"http://www.ubr.com/clocks/frequently-asked-questions-faq/clocks-and-time-faq-origin-of-hours-and-minutes.aspx",
"http://www.scientificamerican.com/article/experts-time-division-days-hours-minute... | ||
3nyouy | what is the reason behind the qwerty and azerty keyboards? | Why can't keyboards be ABCDE... instead of QWERTY or AZERTY? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3nyouy/eli5_what_is_the_reason_behind_the_qwerty_and/ | {
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"score": [
316,
6,
2,
24,
11,
2,
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"text": [
"With old typewriters, if two adjacent letters were pressed in quick succession, there wa... | [] | [] | [
[],
[
"https://www.youtube.com/watch?v=ZnUBl90tayI"
],
[],
[],
[
"http://www.smithsonianmag.com/arts-culture/fact-of-fiction-the-legend-of-the-qwerty-keyboard-49863249/?no-ist"
],
[],
[
"http://i.imgur.com/PwDMF.png"
],
[]
] | |
1kah9i | I'm not sure how to phrase this, but why is information limited to spreading at the speed of light? | I'll accept as fact that objects with mass will require an infinite amount of energy to propel to c. My question is about massless things, like EM radiation. Why, when one particle vibrates up and down, does another particle 300,000,000 meters away wait an entire second to vibrate in response? | askscience | http://www.reddit.com/r/askscience/comments/1kah9i/im_not_sure_how_to_phrase_this_but_why_is/ | {
"a_id": [
"cbmyvr3",
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"score": [
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"text": [
"This really has to do with general relativity and the nature of what space / time / reality IS.\n\nHowever, all the explanations I can think of really fall down to saying essentially that describing thi... | [] | [] | [
[],
[],
[]
] | |
2busbr | when i'm not sick and i cough, it's no big deal. when i am sick and i cough, it feels like a coarse steel wool pad scratching at my throat. what exactly is happening to inflict that intense pain? | Is there physical contact of something inside my throat, are muscles ripping, or what? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2busbr/eli5_when_im_not_sick_and_i_cough_its_no_big_deal/ | {
"a_id": [
"cj93ukv",
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"score": [
3,
2
],
"text": [
"It depends on the sort of sickness. If you mean something like a sinus infection, it's due to the type of moisture. Any time you have a sickness that causes a stuffy nose, all that phlegm and snot and nastiness eventually dr... | [] | [] | [
[],
[]
] | |
13hpv1 | - the odd little sparks of colored dots i sometimes see | I don't know if this happens to anyone else, but when I was young and laying in bed my field of vision would occasionally be clouded by subtle white dots kind of like a very spread out white noise from a television. usually at the center of this would be a tiny moving, blinking mass of colored dots. They would still ap... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/13hpv1/eli5_the_odd_little_sparks_of_colored_dots_i/ | {
"a_id": [
"c74291e",
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"score": [
2,
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"text": [
"I don't know, but I've had similar things happen to me. It's much more mild though. I occasionally see a single, small, randomly colored dot appear and disappear in the corner of my vision. No clouds or anything. When I was ... | [] | [] | [
[],
[]
] | |
3ionvu | why are there different sockets on motherboard for cpus? why isn't there a universal socket to fit all cpus? | e.g. LGA 1150, LGA 1155 etc. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3ionvu/eli5_why_are_there_different_sockets_on/ | {
"a_id": [
"cuia5d5",
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"score": [
7,
3
],
"text": [
"Part of it forces you to upgrade your entire computer at a certain points and part of it is due to compatibility.\n\nAs for the compatibility part, when a socket is designed it has certain features they are trying to support... | [] | [] | [
[],
[]
] | |
6y3i14 | how do humans retain the skill of riding a bicycle even with long periods of unuse? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6y3i14/eli5_how_do_humans_retain_the_skill_of_riding_a/ | {
"a_id": [
"dmkh77i",
"dmky6zo"
],
"score": [
13,
3
],
"text": [
"Bike riding is 95% confidence. You get on a bike, it's unstable it tips over, no way you're going to pick your feet up an barrel forward on that precarious contraption.\n\nAfter much cajoling from your parents or whoever, ... | [] | [] | [
[],
[]
] | ||
8eggnn | How much net worth in 2018 dollars would you need to be considered a "Kulak" in Stalin's Russia? | Or income | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/8eggnn/how_much_net_worth_in_2018_dollars_would_you_need/ | {
"a_id": [
"dxvofrm",
"dxvuf57"
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"score": [
4,
24
],
"text": [
"Follow up question: I've heard it claimed by folks like Niall Ferguson that the persecution of the Kulaks was deeply tied to antisemitism and was nothing less than an anti\\-Jewish pogrom? Is there any truth to this? If ... | [] | [] | [
[],
[
"https://www.historylearningsite.co.uk/modern-world-history-1918-to-1980/russia-1900-to-1939/russia-and-agriculture/",
"https://economics.stanford.edu/sites/default/files/markevich_march_4.pdf",
"http://web.mit.edu/russia1917/papers/0901-PeasantViewsonLandReforms&Governance.pdf"
]
] | |
58mdpo | Is Fuzzy Logic used in science, and more specifically in Quantum Mechanics? | So I am self studying Fuzzy Sets from [George J. Klir's book](_URL_0_). Chapter 1 concludes with a discussion on paradigm shifts, and how fuzzy logic is a new paradigm that will change science considerably. The book was written in 1995 though. So did scientists adopt this new paradigm, and more specifically did this ne... | askscience | https://www.reddit.com/r/askscience/comments/58mdpo/is_fuzzy_logic_used_in_science_and_more/ | {
"a_id": [
"d91pv7m",
"d91vhhv"
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"score": [
8,
4
],
"text": [
"I've never seen fuzzy logic used in quantum. Quantum mechanics is a probabilistic theory, sure, but we still work within well-defined sets (i.e., a normed vector space). It sounds like fuzzy logic works with a different sort... | [] | [
"https://www.amazon.com/Fuzzy-Sets-Logic-Theory-Applications/dp/0131011715"
] | [
[],
[
"http://sipi.usc.edu/~kosko/Fuzziness_Vs_Probability.pdf"
]
] | |
10rh6u | Have human beings ever created a new species? | We're in AP Biology discussing speciation and the argument desperately needs some hard supporting facts. Microevolution is most definitely observable, but have we ever truly accomplished speciation?
Pardon the awkward wording; I'm trying to pay attention. Currently we're discussing pigeonesque chickens. | askscience | http://www.reddit.com/r/askscience/comments/10rh6u/have_human_beings_ever_created_a_new_species/ | {
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"score": [
98,
70,
14,
4,
2,
7,
3,
13,
3,
7,
2
],
"text": [
"Bananas, broccoli, cau... | [] | [] | [
[],
[
"http://bio1903.nicerweb.com/Locked/media/ch22/22_10ArtifSelection.jpg"
],
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Cow",
"http://en.wikipedia.org/wiki/Darwin's_finches"
],
[],
[
"http://scienceblogs.com/notrocketscience/2009/12/03/british-birdfeeders-split-blackcaps-into-... | |
90j39f | if i fall asleep at 12:30am and naturally wake up at 6:30am, will i be better or worse off then getting 2 more hours of sleep, but waking up to an alarm? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/90j39f/eli5_if_i_fall_asleep_at_1230am_and_naturally/ | {
"a_id": [
"e2qsyz7"
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"score": [
5
],
"text": [
"I heard it's best if you get up the first time you wake up naturally. It's your natural cycle. Majority of people need around 8 hours but there are people who just need 6. some might need 10, it depends. I've noticed myself that I'm less tired ... | [] | [] | [
[]
] | ||
fksaye | Will social distancing make viruses other than covid-19 go extinct? | Trying to think of the positives... if we are all in relative social isolation for the next few months, will this lead to other more common viruses also decreasing in abundance and ultimately lead to their extinction? | askscience | https://www.reddit.com/r/askscience/comments/fksaye/will_social_distancing_make_viruses_other_than/ | {
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"fkw3but",
"fkw7fe3",
"fkx91gg",
"fkx922l",
"fkx9ol5",
"fkxn6ia",
"f... | [] | [] | [
[],
[],
[
"https://www.elitetrader.com/et/threads/aggressive-testing-helps-italian-town-cut-new-coronavirus-cases-to-zero.341786/"
],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[
"https://m.youtube.com/watch?v=dSQztKXR6k0&feature=youtu.be"
],
[
"h... | |
1szhhc | why do deaf people's voices sound different? | Deaf people seem to have a very distinctive sound to their voice. Why is that? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1szhhc/eli5_why_do_deaf_peoples_voices_sound_different/ | {
"a_id": [
"ce2szia",
"ce2t18l",
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"score": [
5,
8,
3
],
"text": [
"They can't hear what they're saying. ",
"When you speak, you constantly adjust the tone/pitch/etc of your voice. A deaf person can't do this, because they can't hear it.",
"Born deaf and deaf la... | [] | [] | [
[],
[],
[]
] | |
5rcxr1 | How did the North maintain its food supply despite the secession of the South during the American civil war? | As is often taught in American history classes part of the reason why the North won was because of it's heavy industrialization compared to the South. At the same time though, the South is usually portrayed as the agricultural powerhouse of the United States at the time, why wasn't it able to be used to starve the Nort... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5rcxr1/how_did_the_north_maintain_its_food_supply/ | {
"a_id": [
"dd6eivr"
],
"score": [
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],
"text": [
"To answer your first question: the North grew its own food just fine. The agrarian South vs. industrial North narrative is *technically* true, but taken unadorned ends up misleading. Compared to the South, the North has much more industry to boas... | [] | [] | [
[]
] | |
2hrffq | How pressing is antibiotic resistance? | A while ago I had heard the next frontier of medicine was developing new medications that can be held in reserve to combat antibiotic-resistant strains of bacteria, and to re-educate patients/healthcare professionals to top prescribing antibiotic medications so freely.
Have there been advancements made on either of th... | askscience | http://www.reddit.com/r/askscience/comments/2hrffq/how_pressing_is_antibiotic_resistance/ | {
"a_id": [
"ckvufy3",
"ckvxg1d"
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"score": [
2,
2
],
"text": [
"I can't speak to any new medications being held in reserve, but I can say that antibiotic resistant bacteria are increasing in prevalence. Very often you see methicillin and now vancomycin resistant bacteria popping up in un... | [] | [] | [
[],
[
"http://www.rsc.org/chemistryworld/Issues/2008/March/TheTroubleWithAntibiotics.asp",
"http://www.slu.se/en/departments/microbiology/research/bacterial-host-interaktions/antimicrobial-substances/",
"http://www.mededirect.org/viewprogram.cfm?Program=95&HeaderCEProgramContentID=59,60,61,62,68,6... | |
9ttfs5 | When was Spain recognized as a distinct power on his own, as opposed to "simply" a key domain of the Habsburgs? | As a follow-up question, when was the word "Kingdom of Spain" or "Spanish Empire" first officially used? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9ttfs5/when_was_spain_recognized_as_a_distinct_power_on/ | {
"a_id": [
"e8z1g7i"
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"score": [
26
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"text": [
"Well, Spain was at the time of Habsburg rule considered one of the key domains of the Habsburgs. \n\nOnly under the reign of [Charles V](_URL_0_) were these domains governed under a single executive head. It was not a single political entity; ki... | [] | [] | [
[
"http://upload.wikimedia.org/wikipedia/commons/2/2a/Empire-Roman-Emperor-Charles-V.jpg"
]
] | |
3m2vyh | why are my hands "stickier" to things like plastic after i wash and dry my hands? | To clarify, I mean that feeling you have after you finish washing your hands, when your hands aren't exactly 100% dry and feel just a tad *moist*. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3m2vyh/eli5_why_are_my_hands_stickier_to_things_like/ | {
"a_id": [
"cvbgmw3"
],
"score": [
2
],
"text": [
"Because you've washed off all the natural oils on the surface of the skin? Just a guess..."
]
} | [] | [] | [
[]
] | |
697ocg | Are there any books that deal with the Catholic church's inner workings and motivations during the crusades? | I hope this question doesn't fall under the "polls or trivia" clause regarding the types of questions that can (or should) be asked here. I apologize if it does.
I was wondering if you could recommend a few books that deal specifically with the church (christian) during the crusades. Its motivations, recruiting tacti... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/697ocg/are_there_any_books_that_deal_with_the_catholic/ | {
"a_id": [
"dh68vay"
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"score": [
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],
"text": [
"I think a great and accessible book that will give you what you want is *The Glory of the Crusades* by Steve Weidenkopf. Hold on, I know what you are going to say. You are right, it certainly doesn't sound like an unbiased work of history, but gi... | [] | [] | [
[]
] | |
3s8y79 | Why doesn't my stove fill my kitchen with CO and kill me? | askscience | https://www.reddit.com/r/askscience/comments/3s8y79/why_doesnt_my_stove_fill_my_kitchen_with_co_and/ | {
"a_id": [
"cwvh4ln",
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3
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"text": [
"Carbon monoxide results from the incomplete combustion of hydrocarbons. The fuel mixture in your oven and gas stovetop are sufficiently close to the stoichiometric point (even mixture) or lean (oxygen-rich) enough that this... | [] | [] | [
[],
[
"http://www.abe.iastate.edu/extension-and-outreach/carbon-monoxide-poisoning-gas-fired-kitchen-ranges-aen-205/"
]
] | ||
2g9c5r | I'm a south vietnamese farmer/peasant at end of the war, what effect would the communist victory have on my life? | By peasant, I mean someone living in one of those small villages I always see in the movies, which are seemingly in the middle of the jungle. How, if at all, did life change for them after the north won? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2g9c5r/im_a_south_vietnamese_farmerpeasant_at_end_of_the/ | {
"a_id": [
"ckh1a1u"
],
"score": [
3
],
"text": [
"[I've written about this previously here. :\\)](_URL_0_)"
]
} | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/1j3p9a/im_a_pretty_standard_southern_vietnamese_citizen/cbaxe7b"
]
] | |
3mpbl7 | Are minerals Homogeneous or heterogeneous? | askscience | https://www.reddit.com/r/askscience/comments/3mpbl7/are_minerals_homogeneous_or_heterogeneous/ | {
"a_id": [
"cvh6t2n"
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"score": [
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"text": [
"Rocks are often heterogeneous, composed of many minerals. Granite is a rock, with quartz, mica, feldspar, and other kind of materials in it. & there are many kind of granite from the red granites to white sierra kinds, to those containing pitch... | [] | [] | [
[]
] | ||
1mwtts | why is iphone 5s's processor faster than other top-of-the-line android phones when they have more cores and ghz? | The question is in the title.
Example:
iPhone 5s: Dual core, 1.3ghz.
Samsung Galaxy S4: Quad core, 1.9ghz.
However, iPhone 5s dominates in benchmarks. How is this possible? Where does the speed come from? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1mwtts/eli5_why_is_iphone_5ss_processor_faster_than/ | {
"a_id": [
"ccdchs3",
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"score": [
2,
4
],
"text": [
"I'm no expert, but I think it comes down to optimization. \n\niOS runs on, at most, 20 different hardware specs. You've got the Iphone, Ipod, Ipad - With its various flavors. \nThat means that the developers of iOS know exa... | [] | [] | [
[],
[]
] | |
79cvkx | Did Lenin have a 12 year old maid he kept in a cage when he was exiled in Siberia? | I am watching a documentary on Netflix titled "The Russian Revolution", and there's this line 18 minutes in where it's mentioned that:
> "He had a maid of 12, whom he paid one ruble a month, and kept her in a sort of cage under the stairs."
This was in the context of the time he spent exiled in Siberia, and how it w... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/79cvkx/did_lenin_have_a_12_year_old_maid_he_kept_in_a/ | {
"a_id": [
"dp16vaq"
],
"score": [
498
],
"text": [
"Lenin (27 _URL_0_ the time) was in exile in Shushenskoye village for 3 years, from 1897 to 1900. Although being fairly remote, the village was well developed and counted about 1500 residents.\n\nLenin was accompanied by his wife Nadezhda and hi... | [] | [] | [
[
"y.o.at"
]
] | |
2b8zft | why dota 2 is such a big deal | I know that the International tournament is going on in Seattle right now and that the prize money is over 10 million, but what why are so many people enthralled with the game? What makes it so interesting that so many people are watching it on Twitch and what about the game made so many people raise money for the Inte... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2b8zft/eli5why_dota_2_is_such_a_big_deal/ | {
"a_id": [
"cj2xx7k",
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"score": [
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"text": [
"1. It's replayable. Every game is unique because of HUGE amount of heroes and ways they can be combined and played.\n\n2. It's pretty balanced (fair). It's not only balanced is sides and heroes, but als... | [] | [] | [
[],
[],
[
"https://www.youtube.com/watch?v=Pyv8_QTALSw"
]
] | |
6syspc | What Caused The Conversion from Electric Streetcar to Gas Bus? | I was reading (_URL_0_) that in Cleveland the electric street cars and subway was replaced by busses due to rider loss from the model T. Why is this a valid move from electric to gas and how did it decrease profit loss for the transit lines? Seems like we are going backwards now trying to move things back to electric. ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6syspc/what_caused_the_conversion_from_electric/ | {
"a_id": [
"dlguioz",
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5,
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],
"text": [
"I can't answer for Cleveland, but I can explain how an equivalent process happened in the UK.\n\nBetween the 1930s and the 1950s all the UK tram networks ( the UK term for streetcar) closed, the sole ex... | [] | [
"http://www.riderta.com/history"
] | [
[],
[
"https://www.reddit.com/r/AskHistorians/comments/tq9fa/whats_the_truth_about_the_great_american/",
"http://debunkportland.com/printables/TQOrigin.pdf"
],
[]
] | |
5o9lcj | neo-conservatism vs conservatism & neo-liberal vs liberal | i am studying sociology and i cannot for the life of me understand it properly.
if someone can explain it as simply as possible i would be able to understand it :/
if it helps im from Singapore and some people describe it as conservative and i kind of understand that.
P.S.: i dont know if someone can use singapore a... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5o9lcj/eli5_neoconservatism_vs_conservatism_neoliberal/ | {
"a_id": [
"dchptnx",
"dcht4tv"
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"score": [
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2
],
"text": [
"No one can properly explain it.\n\nEverything is changing very fast and more than just these poorly-defined categories. Sometimes people claim a situation belongs to one of them when it does not at all.\n\nStrictly speaking ... | [] | [] | [
[],
[]
] | |
5adln5 | How would calvary control their horses in the heat of battle? | Be it Alexander the Great, the mongol horde, or calvary during the American Civil War, i have trouble imagining how one could maintain control of their horse during the chaos.
Any help would be very much appreciated!
Thanks for your time. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5adln5/how_would_calvary_control_their_horses_in_the/ | {
"a_id": [
"d9gnjb6"
],
"score": [
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"text": [
"From what little I know, the horses were drilled and trained daily (especially in the ancient world), and were bred as war horses. The rider would have a connection with his own mount and I believe a Parthian commander was said the believe that \... | [] | [] | [
[]
] | |
xcw95 | Why are war bonds a thing of the past, or does no one talk about them anymore? | I was recently reading about ww2 history again and I always read about the propaganda campaigns for war bonds. Today it seems the wars the US is involved in is paid directly by congressional budgets.
How did the culture shift, or am I not understanding this piece of history? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/xcw95/why_are_war_bonds_a_thing_of_the_past_or_does_no/ | {
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"score": [
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88,
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"text": [
"No real historical background, but if I'm understanding things correctly, war bonds have ... | [] | [] | [
[],
[
"http://www.nytimes.com/interactive/2010/02/01/us/budget.html/"
],
[],
[],
[],
[],
[],
[]
] | |
wby7d | Is there any evidence for what actually goes on when a knife edge is 'honed'? | I have heard conflicting stories about what is going on when a knife edge is 'honed' (or 'steeled) and the Wiki page seems to indicate that no-one actually knows. Some say that it recreates micro-serrations on the edge, and some say that it straightens the edge.
My own research to try and find a paper that talks about... | askscience | http://www.reddit.com/r/askscience/comments/wby7d/is_there_any_evidence_for_what_actually_goes_on/ | {
"a_id": [
"c5c0aey",
"c5c9miy"
],
"score": [
15,
4
],
"text": [
"Here's a paper that explains in detail: _URL_0_",
"I'm not sure I understand the question...\n\nI hone straight razors (shoutout to /r/wicked_edge) and as we hone razors we make the edge progressively narrower and smoot... | [] | [] | [
[
"http://www.bushcraftuk.com/downloads/pdf/knifeshexps.pdf"
],
[]
] | |
3s8egc | why is there controversy over the seasonal starbucks cup? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3s8egc/eli5_why_is_there_controversy_over_the_seasonal/ | {
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"score": [
44,
27,
7,
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"text": [
"Because there are no snowflakes on it and it is plain and christians think they are denouncing christmas..... Im not joking",
"Som... | [] | [] | [
[],
[],
[],
[
"http://www.aspirantsg.com/wp-content/uploads/2015/10/Screen-Shot-2015-10-31-at-11.44.12-pm.png"
],
[],
[]
] | ||
4dchr6 | why does birth control and/or the morning after pill only suitable for women under 176 lbs? | From what I've read and been told the Morning After Pill (as well as some forms of BC), are only to be used with women under 176 lbs (IIRC). Why is this? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4dchr6/eli5_why_does_birth_control_andor_the_morning/ | {
"a_id": [
"d1pnwg0",
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"score": [
6,
9
],
"text": [
"I'm guessing because the medication is only potent enough for so much body mass. Think of it like alcohol. Someone who is 300lbs vs 120lbs can drink a whole hell of a lot more because the alcohol interacts with far more 'b... | [] | [] | [
[],
[]
] | |
k0occ | a priori and a posteriori knowledge. | I know that A priori knowledge is knowledge that is gained "before experience" and A posteriori is knowledge "based on experience." But, when I try to think of hypothetical "knowledge situations" I am unable to categorize them. Can you help expand my understanding, please? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/k0occ/eli5_a_priori_and_a_posteriori_knowledge/ | {
"a_id": [
"c2gms19",
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"score": [
4,
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4,
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],
"text": [
"Anything I tell you is a posteriori knowledge. The theory of knowledge goes that there are certain things that are known internally. You just have knowledge of these things indepen... | [] | [] | [
[],
[
"reddit.com"
],
[],
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"reddit.com"
]
] | |
201ra6 | on an international flight, what would the drinking/purchase age be? | I'm 18 and let's say I'm flying from Canada (age to drink/purchase is 19) to Luxembourg (age to drink/purchase is 16).
What country would set it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/201ra6/eli5_on_an_international_flight_what_would_the/ | {
"a_id": [
"cfyzvab"
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"text": [
"Airlines tend to use the legal drinking age based on their registration location. Thus, an American airline based out of New York state would use 21 as a drinking age, an Ontario based airline/origin flight will use 19. \n\nThere are some notable... | [] | [] | [
[]
] | |
1sxpum | What color is the moon? | Sorry if this is a really dumb question. I have seen some posts recently from the chinese rover (like the one below) that surprised me. I always thought the moon was a chalky white/grey. Anyone clear this up for me?
_URL_0_ | askscience | http://www.reddit.com/r/askscience/comments/1sxpum/what_color_is_the_moon/ | {
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"text": [... | [] | [
"https://twitter.com/elakdawalla/status/411875676459778049/photo/1"
] | [
[],
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Moon",
"http://en.wikipedia.org/wiki/Albedo"
],
[],
[],
[],
[
"http://history.nasa.gov/alsj/a16/AS16-117-18841HR.jpg"
],
[
"http://nssdc.gsfc.nasa.gov/image/planetary/earth/near_earth_moon.jpg",
"http://starryskies.com/article... | |
11g96r | Can anyone help me understand old west architecture? | There seems to be a lot of romanticism around the old west, which can make finding reliable information difficult. I am trying to find some pictorial evidence of the old west stereotypical frontier towns, with the high fronted façades.
I have been told that early settlement towns would build a fake extra story in the ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/11g96r/can_anyone_help_me_understand_old_west/ | {
"a_id": [
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"c6m8h8x",
"c6ma3ni",
"c6mavjf"
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"score": [
3,
3,
7,
2
],
"text": [
"If you are looking for examples of this architectural style, you should drive around west Sonoma County. The modern towns of [Graton](_URL_2_), [Occidental](_URL_1_) and [Jenner](_... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Jenner,_California",
"http://en.wikipedia.org/wiki/Occidental,_California",
"http://en.wikipedia.org/wiki/Graton,_California"
],
[
"http://www.usgwarchives.org/ca/nevada/postcards/fippin.jpg",
"http://blogs.getty.edu/iris/what-do-you-mean-sustainability-and-cu... | |
gt3ez | Is there a vacuum at absolute zero? | If all motion stops then gases become solids. Solids are much more dense therefore taking up less volume than gases of course so there'd be a lot of extra space right? Also what if it was an instant change to absolute zero, there wouldn't exactly be time to change from gases and liquids to solids, it would just be a su... | askscience | http://www.reddit.com/r/askscience/comments/gt3ez/is_there_a_vacuum_at_absolute_zero/ | {
"a_id": [
"c1q3f7p",
"c1q4rl9"
],
"score": [
6,
2
],
"text": [
"Motion doesn't stop at absolute zero. Quantum mechanics prohibits that. However, absolute zero is not and never was _defined_ as a state of zero motion, but a state of zero entropy. Now redefined as minimal entropy.\n\nSo, s... | [] | [] | [
[],
[]
] | |
3ht6hd | why does video compression make red so pixelated? | I was watching a show on my computer and noticed that [bright red colors normally look super pixelated](_URL_0_) compared to everything else.
It happens on the Wii U when you're streaming to the gamepad too, it's especially noticeable on the red text in Super Mario 3D World and on all red loading screens.
Is there a... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3ht6hd/eli5_why_does_video_compression_make_red_so/ | {
"a_id": [
"cuafjm3"
],
"score": [
4
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"text": [
"This can be an effect of \"Chroma subsampling\": _URL_0_\n\nIn ELI5, more compression is done to the color parts of images/video than to the black-and-white parts of it. This saves a lot of space but is not _that_ noticable to us usually."
]
} | [] | [
"http://i.imgur.com/Bsazkwm.png"
] | [
[
"https://en.m.wikipedia.org/wiki/Chroma_subsampling"
]
] | |
4zxdi5 | there is a recurring joke about "thank god for mississippi" - how did mississippi end up being the worst off of the states in so many categories? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4zxdi5/eli5_there_is_a_recurring_joke_about_thank_god/ | {
"a_id": [
"d6zi417",
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"score": [
9,
7
],
"text": [
"Because it generally is (worst in practically everything, that is). For example:\n\n1) [Highest obesity rate in the nation](_URL_2_).\n\n2) [Most high school drop outs](_URL_1_).\n\n3) [Highest unemployment rate in the U.S... | [] | [] | [
[
"http://www.usatoday.com/story/money/business/2014/02/23/most-miserable-states/5729305/",
"http://www.statemaster.com/graph/edu_per_of_peo_who_hav_com_hig_sch_inc_equ-completed-high-school-including-equivalency",
"http://calorielab.com/news/2015/10/31/fattest-states-2015/",
"http://www.bls.gov/web... | ||
1c0q25 | Do humans really affect the environment all that much? | There are the same hurricanes, rainfall, temperatures, and wind currents each year that don't change all that much. I might be simplifying it. Although I'd like to see some evidence that we are affecting our planet negatively. | askscience | http://www.reddit.com/r/askscience/comments/1c0q25/do_humans_really_affect_the_environment_all_that/ | {
"a_id": [
"c9c3b9z",
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"score": [
2,
3,
3
],
"text": [
"the 6th mass extinction is a good place to start. also global warming. ",
"[We destroyed the fourth-largest lake in the world](_URL_1_ ) over a period of about 50 years. \n\nDoes that count? \n\n.... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Aral_Sea",
"http://unimaps.com/aral-sea/aral-pic.gif"
],
[
"http://climate.nasa.gov/effects",
"http://dels.nas.edu/resources/static-assets/materials-based-on-reports/booklets/warming_world_final.pdf"
]
] | |
2398cc | why is food for astronauts transported in dehydrated form? | Is it solely so that it takes up less space, or are there other factors at play?
(bonus question: is space-tea served on flying saucers?) | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2398cc/eli5_why_is_food_for_astronauts_transported_in/ | {
"a_id": [
"cgupkp6",
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"score": [
3,
6
],
"text": [
"there are 3 reasons:\n\n- it's lighter\n\n- it take less space\n\n- it's method of preservation",
"Space and preservation are factors but the biggest factor is mass.\n\nIt's expensive to bring things up in to space. And ... | [] | [] | [
[],
[]
] | |
4q9mdi | why is snorting a substance an efficient method of getting high? what is happening between your nostril and euphoria? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4q9mdi/eli5_why_is_snorting_a_substance_an_efficient/ | {
"a_id": [
"d4r9b83",
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"score": [
8,
3
],
"text": [
"Lots of wet mucous membranes inside your nasal cavity, very high surface area. The extremely fine powder can get all over these ruffled, folded surfaces and **quickly dissolve into your bloodstream**. This is not too dissimi... | [] | [] | [
[],
[]
] | ||
nfkkx | Why is gravity not a violation of the second law of thermodynamics? | Note: I come from a chemistry background and this is an astronomy question, so I may be off on some of my assumptions.
This is a question I've struggled with for a long time and haven't been able to get a clear answer from my previous professors:
The second law of thermodynamics states that the total entropy of a s... | askscience | http://www.reddit.com/r/askscience/comments/nfkkx/why_is_gravity_not_a_violation_of_the_second_law/ | {
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"score": [
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48,
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8,
7,
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"text": [
"How about some [Entropic Gravity](_URL_1_)?\n\... | [] | [] | [
[
"http://math.ucr.edu/home/baez/entropy.html",
"http://en.wikipedia.org/wiki/Entropic_gravity"
],
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Black_hole_thermodynamics"
],
[
"http://math.ucr.edu/home/baez/entropy.html",
"http://en.wikipedia.org/wiki/Entropic_gravity"
],
[],
... | |
2y8kae | Is electric heating inefficient? | I've always been told that electric heating with a personal heater is very inefficient compared to central gas heating. Are they talking cost wise, or energy wise? Or am I just completely mistaken? | askscience | http://www.reddit.com/r/askscience/comments/2y8kae/is_electric_heating_inefficient/ | {
"a_id": [
"cp79jbg"
],
"score": [
13
],
"text": [
"The answer to the question depends on how you define efficiency here. In general heating can be an extremely efficient process, close to 100% in fact. The reason is that virtually all energy you use will eventually be converted to heat. This is ... | [] | [] | [
[]
] | |
agitcv | how do apparel companies such as getonfleek sell stuff with obviously copyrighted or otherwise branded material (spongebob references, memes, etc) without amassing lawsuits/ being shutdown? | If you visit their website, or other apparel brands that sell third-party designed shirts, there's tons of designs that blatantly use or reference things that are copyrighted. There's a bold and brash t shirt which is directly from spongebob, there's a shirt with the 'y tho' meme which should be considered intellectual... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/agitcv/eli5_how_do_apparel_companies_such_as_getonfleek/ | {
"a_id": [
"ee6jioe"
],
"score": [
2
],
"text": [
"How do you know they are not licensed? \n\nIn the UK primark is a well know cheap as chips company knocking cotton tees out for £2 or less. \n\nThey sell genuine licensed Harry Potter, Marvel, Adventure Time, Disney etc and still manage to know e... | [] | [] | [
[]
] | |
1p7pz0 | As the earth moves around the sun, do we lose some of our atmosphere? | askscience | http://www.reddit.com/r/askscience/comments/1p7pz0/as_the_earth_moves_around_the_sun_do_we_lose_some/ | {
"a_id": [
"cd09qt2"
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"score": [
3
],
"text": [
"Atmosphere loss varies from planet to planet. In the case of Earth, the primary cause of atmospheric loss is the 'thermal escape mechanism'. In short, as atmospheric molecules have a distribution of thermal energy, there is a probability that som... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Atmospheric_escape",
"http://www.scientificamerican.com/article.cfm?id=how-planets-lose-their-atmospheres"
]
] | ||
3j4vzn | on a plane, why do they tell people to put their own oxygen mask on before helping others? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3j4vzn/eli5_on_a_plane_why_do_they_tell_people_to_put/ | {
"a_id": [
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],
"text": [
"If you pass out.. how are you suppose to help? lolol",
"If you pass out on a plane you are no good to anyone. If you put the mask on you first you can still help others. Hoped this helped this is my... | [] | [] | [
[],
[],
[]
] | ||
4dmm3c | why people get so much more fascinated by bad news on tv rather than focusing on good news? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4dmm3c/eli5_why_people_get_so_much_more_fascinated_by/ | {
"a_id": [
"d1sbpmv",
"d1scoi9",
"d1sdrmx",
"d1sff1q"
],
"score": [
2,
18,
9,
2
],
"text": [
"Easiest answer... Bad news is more prominent, and sells... Not to mention we tend to get hooked when bad news is happening...",
"Good news is typically the absence of news - T... | [] | [] | [
[],
[],
[],
[]
] | ||
2bufgk | why are ants attracted to the extension cord ends out in my yard? | I pick up the cord and there is a frenzy where the male and female ends meet. Happens all the time. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2bufgk/eli5why_are_ants_attracted_to_the_extension_cord/ | {
"a_id": [
"cj908l6"
],
"score": [
6
],
"text": [
"Some ants are attracted to electrical current. I don't know that there is a consensus as to why this is. \n\nOne idea is that, once at the electrical source, the ants are shocked and release signals to other ants thus causing them to swarm. "
]... | [] | [] | [
[]
] | |
5z0kzm | when writing a really big piece of software, how do the large numbers of programmers involved make sure they don't break everybody else's bits of code every time they change something in their little bit? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5z0kzm/eli5_when_writing_a_really_big_piece_of_software/ | {
"a_id": [
"deub6b4",
"deubkqk",
"deucttr",
"deuftty",
"deuhdza",
"deuisuj",
"deunxqe",
"dev18nd",
"dev42ar",
"devhpbk"
],
"score": [
6,
42,
206,
7,
7,
2,
143,
2,
2,
2
],
"text": [
"In we'll run projects they use tests to ens... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[],
[],
[]
] | ||
1gy2wt | why can cars with manual transmission be push started and cars with automatic transmission can't? | I tried to explain to my mom but I failed miserably :( | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1gy2wt/eli5_why_can_cars_with_manual_transmission_be/ | {
"a_id": [
"caoycrk",
"cap56bb",
"cap5y9f"
],
"score": [
8,
2,
2
],
"text": [
"Break it down into something simpler. When you had to start one of the old cars, you would insert a crank handle and turn it a bit. The turning of the crank turned the piston rods and created a spark. S... | [] | [] | [
[],
[],
[]
] | |
30y6p2 | what's with the blinking (usually green) light in that bathrooms that you usually see when the lights turn off? | I've always seen them in hotel bathrooms and apartment bathrooms, but wondered what their specific purpose is for. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/30y6p2/eli5_whats_with_the_blinking_usually_green_light/ | {
"a_id": [
"cpwzrml"
],
"score": [
2
],
"text": [
"Could be a motion sensor, battery indicator light for the air freshener, co2 sensor/firealarm."
]
} | [] | [] | [
[]
] | |
l5kqc | android, rooting, flashing, everything | I want to know everything about android. What rooting and flashing are, how you could do those things, and what roms, like cyanogen and miui, are. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/l5kqc/eli5_android_rooting_flashing_everything/ | {
"a_id": [
"c2pz702",
"c2q0j71",
"c2pz702",
"c2q0j71"
],
"score": [
8,
3,
8,
3
],
"text": [
"android is an operating system built and maintained by google for smartphones and tablet computers. the innermost part of it, the kernel, is based on linux. it competes with apple'... | [] | [] | [
[],
[],
[],
[]
] | |
1b54i4 | What were small towns and villages like in ancient Greece? | So we always see a lot about the ruins of great Greek cities like Athens, but I've been wondering, what of small towns? What was life like in places without the columns and Parthenons? Were rural Greek villages like any other ancient place? I'd love evidence or even photos of ruins, foundations, or even reconstructions... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1b54i4/what_were_small_towns_and_villages_like_in/ | {
"a_id": [
"c93owc0",
"c93yx8k"
],
"score": [
7,
3
],
"text": [
"I'm not really familiar with the lowest levels of collective settlement, but every major city like Athens or Corinth also had a large series of \"satellite towns\", like the fairly well known Rhamnous and Brauron of Attica.\... | [] | [] | [
[],
[]
] | |
1m5lei | What actually happens to a runner's body as they "condition" themselves? What's changing that allows them to run faster/longer? | When I started running I could barely go two minutes without having to catch my breath, and now I can run over an hour straight. What changed physically? | askscience | http://www.reddit.com/r/askscience/comments/1m5lei/what_actually_happens_to_a_runners_body_as_they/ | {
"a_id": [
"cc61ax1"
],
"score": [
29
],
"text": [
"A number of changes occur in a person as they exercise, and we don't understand all of them (and I'm going to only talk about a few of the ones we do understand). These changes also differ between types of exercise. Since you mention running f... | [] | [] | [
[]
] | |
fntbqy | How blond did one have to be to be considered Aryan in Nazi Germany? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/fntbqy/how_blond_did_one_have_to_be_to_be_considered/ | {
"a_id": [
"flbehe6"
],
"score": [
4
],
"text": [
"You didn't need to be blonde. Nazi racial ideals were convoluted and contradictory, and not so easily contained in a ranking like that. I touch on some of this before in [this answer](_URL_0_)."
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/cc498h/how_did_hitler_an_austrian_dark_haired_man/etnb39l/"
]
] | ||
15g9z9 | how does a company like hbo have so much money to dump into shows and movies without ads? | I understand that people pay the monthly fee to watch HBO but the company had clearly dumped billions into producing top quality shows, it kind of blows my mind a little bit that they can make so much money and still turn a profit, I understand there is international licensing and DVD/online sales, but wouldn't HBOGo k... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/15g9z9/eli5_how_does_a_company_like_hbo_have_so_much/ | {
"a_id": [
"c7m72o2",
"c7m77re",
"c7m7kkc",
"c7magu6"
],
"score": [
18,
21,
3,
2
],
"text": [
"Remember, just because you don't see the ads doesn't mean they aren't there. Lots of product placement in some shows, which brings in a lot of $. \n\nMore info [here](_URL_0_) as... | [] | [] | [
[
"http://www.investopedia.com/financial-edge/0812/how-hbo-makes-money.aspx#axzz2G8D5sv8G"
],
[],
[],
[]
] | |
5uvwjo | how do helicopters measure their speed? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5uvwjo/eli5_how_do_helicopters_measure_their_speed/ | {
"a_id": [
"ddx939c",
"ddx9knk"
],
"score": [
3,
3
],
"text": [
"If you're looking for speed moving forward it can be approximated using the change in GPS coordinates ",
"Thee same way airplanes do. They have a probe with a hole in the front of it. Air is forced into it by the movemen... | [] | [] | [
[],
[]
] | ||
7113tx | why does the skin on our palms and soles of our feet have ridges but the skin on the rest of our body appears relatively smooth. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7113tx/eli5_why_does_the_skin_on_our_palms_and_soles_of/ | {
"a_id": [
"dn7dazt",
"dn7ddkv"
],
"score": [
2,
2
],
"text": [
"I would assume this is because of the increased grip that such skin provides; very useful on your hands and feet. \n\nEdit: it may also be associated with the large concentration of nerves in the hands and feet and the surfa... | [] | [] | [
[],
[]
] | ||
ouhgk | Lets say I'm setting up a wifi network on Mars, would the signal be better or worse due to atmospheric conditions? | One of the truly bizarre questions I found myself debating yesterday after a random science fiction 'what-if' rant with my friends. Would the lack of a magnetosphere mean that solar radiation would interfere, or would the thin atmosphere allow for better transmission? This is really more about what affects radio wave c... | askscience | http://www.reddit.com/r/askscience/comments/ouhgk/lets_say_im_setting_up_a_wifi_network_on_mars/ | {
"a_id": [
"c3k6gqw",
"c3k783x"
],
"score": [
29,
8
],
"text": [
"As a radio guy, I feel a little qualified to attempt an answer. And my answer is that it would most likely work about the same as it does here. To address some of the other concerns in the topic:\n\n1. Solar radiation - eve... | [] | [] | [
[],
[]
] |
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