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3ogz3m | If you are drawing straws as a group of 6 when is the optimal time to draw? | To me it seems like you wouldn't want to draw first because there is only a 1 in 6 chance you will draw the correct straw. But if you draw last there is a 5 in 6 chance the correct straw has already been drawn. | askscience | https://www.reddit.com/r/askscience/comments/3ogz3m/if_you_are_drawing_straws_as_a_group_of_6_when_is/ | {
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"This is a fairly commonly asked question in probability, and you can probably find some iterations of this question using the search function.\n\nSuppose there are N straws, S of which are \"short\". ... | [] | [] | [
[],
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77hgn7 | why does leukemia cause leukocytosis? | If in leukemia we have a stop in differentiation of the myeloid lineage, how come leukocytosis is such a frequent finding?
edit: sorry this was poorly written, let me rephrase.
Take acute myeloid leukemia (AML). Leukocytosis is commonly present.
AML, is characterized by an increase in the number of myeloid cells ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/77hgn7/eli5_why_does_leukemia_cause_leukocytosis/ | {
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"I'm not sure I am understanding your question. Leukemia is essentially uncontrolled cellular reproduction - so you'd expect to find lots of the cell type that is being produced. There are many different types of leukemias affecting many (all?) o... | [] | [] | [
[]
] | |
3us417 | why are there musical one-hit wonders? | I have always have wondered why some bands produce songs that are one-hit wonders while others produce hit songs for years. I get that there may be novelty songs that catch on, but what about the serious musicians? I assume if they can write or perform one big hit they should at least be able to make a respectable fo... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3us417/eli5_why_are_there_musical_onehit_wonders/ | {
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"Being creative is a strange thing. Sometimes you just make something that is far better or cliques way better than anything you've ever made before, and its extremely hard to replicate that idea. Especi... | [] | [] | [
[],
[],
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frp45o | What are the qualifiers required to call yourself A Historian™️? | [deleted] | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/frp45o/what_are_the_qualifiers_required_to_call_yourself/ | {
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"There are no - to my knowledge at least - professional accreditations related to being a 'historian' so anyone can claim to be one if they want to. How far that claim is taken seriously will depend entirely on the audience. In the case of someon... | [] | [] | [
[]
] | |
8yr55u | what does actual love feel like? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8yr55u/eli5_what_does_actual_love_feel_like/ | {
"a_id": [
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"I think it feels different for different people. But on our good days it feels like coming home. No matter what day I’m having, the best part of it is knowing that I get to come home and tell my love all about it. It’s consi... | [] | [] | [
[],
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1r7q3s | why is milk said to be a good source of protein when it contains only about 3,5 %? | There is more protein in potato chips, for example. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1r7q3s/eli5_why_is_milk_said_to_be_a_good_source_of/ | {
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"text": [
"Advertising. \n\nWhile we're at it, it's [not a spectacular source of calcium, either](_URL_0_) [PDF ALERT]\n\nBefore anyone asks how it can be advertising when there are so many different dairy distributors, \"Got Milk?\" w... | [] | [] | [
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"http://en.wikipedia.org/wiki/California_Milk_Processor_Board"
],
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] | |
1iw4va | how come the south was democratic in lincoln's time but republican now? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1iw4va/eli5_how_come_the_south_was_democratic_in/ | {
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"See the [Southern Strategy](_URL_0_).\n\nIn b... | [] | [] | [
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] | ||
ncbiq | Does sitting in front of a computer screen for too long have any negative affects on one's skin? | asdfaf | askscience | http://www.reddit.com/r/askscience/comments/ncbiq/does_sitting_in_front_of_a_computer_screen_for/ | {
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"text": [
"Light from the screen isn't going to hurt you as much as sitting still does.",
"The main danger would be not getting the light from any other source. The body needs sunlight fo... | [] | [] | [
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17klx4 | Why doesn't table salt, or any other ionic salt for that matter, fuse together when in contact with other pieces of itself? | more specifically, what has changed in the structure of the salt that stops the ions from attracting one another and fusing together again? | askscience | http://www.reddit.com/r/askscience/comments/17klx4/why_doesnt_table_salt_or_any_other_ionic_salt_for/ | {
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"There's an activation energy for forming the ionic bond between the two crystals. The atoms at the edge of the crystal are in a slightly different thermodynamic state than the atoms in the middle. You can write a reaction wh... | [] | [] | [
[],
[]
] | |
3om21l | Ancient Romans' rooms had very little furniture, carpet, etc., even if they were wealthy. When did the "modern" furniture-filled household become common? | I first saw the lack of household luxuries pointed out in Jérôme Carcopino's "Daily Life in Ancient Rome." [Reconstructions](_URL_1_) of wealthy Romans' [rooms](_URL_0_), even in the late imperial period, seem to be devoid of anything other than a couple couches and chairs, and maybe a desk or a bed.
I'm wondering whe... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3om21l/ancient_romans_rooms_had_very_little_furniture/ | {
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"The Industrial Revolution certainly increased the amount of furniture and knick-knacks that ordinary people could afford to have, but it's important to remember that museum room reconstructions (even ones from more modern periods, such as those s... | [] | [
"http://www.1st-art-gallery.com/thumbnail/106048/1/A-Performance-Of-$27the-Fluteplayer$27-In-The-$27roman$27-House-Of-Prince-Napoleon-III,-1861.jpg",
"http://farm6.static.flickr.com/5184/5855237424_6a5610efb1_o.jpg"
] | [
[]
] | |
22ok8r | What causes us to see "static" that seems to have no relation to the visual stimuli that is actually present when getting up too fast or rubbing our eyes? | Apologies if I've tagged this wrong, am I right in assuming that this would come under Visual Neuroscience? | askscience | http://www.reddit.com/r/askscience/comments/22ok8r/what_causes_us_to_see_static_that_seems_to_have/ | {
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"I think you're asking about **phosphenes**. A Wiki summary:\n\n > The most common phosphenes are pressure phosphenes, caused by rubbing the closed eyes. They have been known since antiquity, and described by the Greeks. The pressure mechanically... | [] | [] | [
[]
] | |
fp2nw | Is it possible to detect microbial life forms on an extra solar planet? Can microbial life on Earth be detected from space? | I ask this because the chances of coming across highly advanced life forms are pretty slim compared to basic bacteria like life. Right now we scan the sky for radio signals which can only come from advanced life. What about the bare basic forms? | askscience | http://www.reddit.com/r/askscience/comments/fp2nw/is_it_possible_to_detect_microbial_life_forms_on/ | {
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"text": [
"No. If we have good telescopes we can maybe determine what the atmosphere of an extrasolar planet is composed of, and from that hazard a guess as to why the atmosphere has that composition. But there's no way to observe bact... | [] | [] | [
[],
[
"http://blogs.discovermagazine.com/badastronomy/2009/08/04/lcross-detects-life-on-earth/"
]
] | |
3h191r | Qing Dynasty Reading List Question | Asked a few days ago if it was alright to ask after good books on a particular topic, so here goes: I'm interested in the Qing dynasty, as it coincides with the period in US/European/world history I'm most interested in (I've got this strange infatuation with Queen Anne's War). Plus, we don't seem to get any educatio... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3h191r/qing_dynasty_reading_list_question/ | {
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"text": [
"For a general overview of modern Chinese history I personally liked The search for modern China by Spence, it covers Chinese history in a fairly well from 1800-1990.",
"I would echo DeSoulis' sentiments of Spence's lengt... | [] | [] | [
[],
[]
] | |
dl01uc | is plastic bad or is our waste management system? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dl01uc/eli5_is_plastic_bad_or_is_our_waste_management/ | {
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"Plastics greatest advantage is that it does really degrade or break down, even over long periods of time. \n\n\nThis is also it's big problem. It doesn't dregrade or break down. It just sits there in trasheaps. There's n... | [] | [] | [
[],
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zjwdq | If medical science continues to advance, theoretically, how long could humans live? | In [1900](_URL_1_), life expectancy for an average person in the born in the US was just 49 years of age. In [2010](_URL_0_), the average had climbed to nearly 79 years of age. That's a more than 60% improvement in a little over a century.
This was probably due to better nutrition and modern medical advances.
If me... | askscience | http://www.reddit.com/r/askscience/comments/zjwdq/if_medical_science_continues_to_advance/ | {
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"There's a TED talk on this I'll try find a link. The guy in it talks about how in the near... | [] | [
"http://en.wikipedia.org/wiki/List_of_countries_by_life_expectancy",
"http://aging.senate.gov/crs/aging1.pdf"
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[
"http://www.ted.com/talks/aubrey_de_grey_says_we_can_avoid_aging.html?awesm=on.ted.com_AIvg"
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"http://www.lef.org/magazine/mag98/feb98_interview.html"
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... | |
epnp93 | how do the different ‘happy’ chemicals in your brain work? | What causes their production, Why does chemical imbalance happen? Can your body overproduce? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/epnp93/eli5_how_do_the_different_happy_chemicals_in_your/ | {
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"text": [
"This isn't something that has a clear cut answer, as the true effect if the different neurotransmitters aren't simple or entirely observable. Every study of them, in the end, involves the question of \"well now how do you FEEL?\" which is so incr... | [] | [] | [
[]
] | |
7w41rf | Is it possible for an egg cell to experience nondisjunction of every chromosome, and if so, would it lead to a virgin birth? | I was curious about this because of the recent NYTimes article about a species of mutant crawfish which is only female because it can clone itself through total nondisjunction in its eggs, creating clones of itself endlessly. Can such a thing happen in any species, and especially in humans? If it's possible, even if un... | askscience | https://www.reddit.com/r/askscience/comments/7w41rf/is_it_possible_for_an_egg_cell_to_experience/ | {
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"text": [
"Even if you did have a cell undergo meiosis and experience non-disjunction of every chromosome (46,XX), it would still never experience the signal to undergo mitosis that occurs upon fertilization. If it was fertilized, it would have too many chr... | [] | [] | [
[]
] | |
4a5wgr | What if you cut the Planck length in half? Does physics break down at that point? | askscience | https://www.reddit.com/r/askscience/comments/4a5wgr/what_if_you_cut_the_planck_length_in_half_does/ | {
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"The Planck length is not a universal pixel size or some kind of minimum length scale, it's just a really small length constructed from physical constants, that is roughly the length-scale at which quantum gravity effects are relevant. Depending ... | [] | [] | [
[
"https://www.physicsforums.com/insights/hand-wavy-discussion-planck-length/"
]
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9o8ul8 | why can’t natural gas be used on location for home generation electricity and heat? | - NG electric plants are very common
- NG piped to homes for furnace heat is by far the common common heating method
- NG backup generators are commercially available at any big box store, like diesel generators.
There’s probably an obvious reason for it. But it seems like a waste to burn NG for electricity at the pla... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9o8ul8/eli5_why_cant_natural_gas_be_used_on_location_for/ | {
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"text": [
"We can and do. I have been at a home that used NG for heat, and had an NG backup generator in case grid power failed."
]
} | [] | [] | [
[]
] | |
4ixlkm | how does amazon prime's free shipping actually work? with its popularity, are they losing money? how does it affect ups/usps? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4ixlkm/eli5_how_does_amazon_primes_free_shipping/ | {
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"The thing about being a Prime member is that you're inclined to always purchase from Amaz... | [] | [] | [
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2zj0r7 | Was the Revolutionary War really as "civilized" as the movies portray | I recently watch The Patriot and I'm wondering if battle in the 18th century really began with both armies forming ranks across a flat battlefield and standing still while the other army aimed and shot the front line. It seems like a horribly inefficient way to battle. You're just sacrificing soldiers for no reason a... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2zj0r7/was_the_revolutionary_war_really_as_civilized_as/ | {
"a_id": [
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"text": [
"While you wait for more targeted answers, you might be interested in some threads from the FAQ section on \"[Line Formations aka Linear/Napoleonic Tactics](_URL_7_)\":\n\n\n[**American Revolutionary War**](_URL_19_)\n\n* [American Revolution: Whe... | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/21lz4r/did_armys_really_just_stand_in_line_and_shoot_at/",
"http://www.reddit.com/r/AskHistorians/comments/17pihe/what_was_warfare_actually_like_in_the_18thearly/c87qxan",
"http://www.reddit.com/r/AskHistorians/comments/1iat9j/please_help_me_make_sense_o... | |
359cc6 | Why can USB/ethernet/etc. cables only be a certain length? | Is it to do with interference, electrical impedance, ping, or something else entirely? | askscience | http://www.reddit.com/r/askscience/comments/359cc6/why_can_usbethernetetc_cables_only_be_a_certain/ | {
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"USB's electrical design doesn't allow it. When USB was designed, a decision was made to handle the propagation of electromagnetic fields on USB data lines in a way that limited t... | [] | [] | [
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2lly8n | would a "plasma rifle" have recoil? | Hey.
So we all see in science fiction how various factions, instead of using mundane weapons, use "guns" that propel ionized & super heated plasma quickly with magnetic fields to burn and cauterize and do fun stuff.
I figured that since it is essentially a type of railgun without a solid projectile it would have ne... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2lly8n/eli5_would_a_plasma_rifle_have_recoil/ | {
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"Plasma still has mass, and must be accelerated, so yes, we can presume that a weapon that shoots plasma at a target will have recoil. Newton's 3rd law and all that.\n\nAs for how much? No way to know without design specific... | [] | [] | [
[],
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7zmfm6 | how do we know what emotion to name our feelings? | Let's say you feel angry...
you have a physical response which for me feels like my chest is tight and my front side is burning.
How did I learn that the physical response I'm feeling is called anger?
My initial guess is when we were younger we would watch our parents and empathize with the things they interacted wi... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7zmfm6/eli5how_do_we_know_what_emotion_to_name_our/ | {
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"You’re right with the learned part! A lot of it is from modelling parents/older siblings etc... however humans (regardless of race, age, gender and so on) have 5 innate facial expressions (happiness, sadness, disgust, anger, and fear [recognise t... | [] | [] | [
[]
] | |
20f26q | why can police officers arrest you for walking home drunk instead of driving? isn't that a really big catch 22? | I just feel like if you are smart enough not to endanger yourself by driving, you should be able to walk. Not everybody has access to a taxi. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/20f26q/eli5_why_can_police_officers_arrest_you_for/ | {
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"They won't arrest you for walking but if you're causing a disturbance or just acting like a drunk idiot they will and they should write you a ticket. ",
"a. its rare. unless you're causing problems, the police generally ... | [] | [] | [
[],
[]
] | |
53t7yc | how does inputting a shutdown command on a computer physically move components to turn it off? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/53t7yc/eli5_how_does_inputting_a_shutdown_command_on_a/ | {
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"text": [
"Telling a computer to shutdown invokes a series of preconfigured steps, much like your bedtime routine, that go through and orderly shutdown active processes, write anything outstanding to disk, tidy up all additional processes that aren't respo... | [] | [] | [
[]
] | ||
8pfhbf | why are pregnant women restricted from roller coasters, hot tubs, flights, etc? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8pfhbf/eli5_why_are_pregnant_women_restricted_from/ | {
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"text": [
"Something tells me that subjecting a fragile developing fetus to large gravitational forces isn't a great idea.\n\n\nNor is the general large increase in blood pressure.",
"Ro... | [] | [] | [
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1l30k1 | if the body replaces it's cells so often that most of the cells you have aren't the ones you had 20 years ago, why do people like the man in the burn victim ama keep their injuries forever? | Why is the burned skin not replaced with fresh new skin, even after years? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1l30k1/eli5_if_the_body_replaces_its_cells_so_often_that/ | {
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"It's a myth that you replace all your cells after so-and-so many years. The most important cells in your body — neurons and osteocytes — stay with you for life.\n\nBut getting back to the question, the reason why scars don't usually disappear is... | [] | [] | [
[]
] | |
16x0cf | Why didn't any of China's dynasties attempted to or successfully conquered 'Korea'? | If the Chinese civilization had enough military power to banish the Yuan dynasty and the Mongols, why weren't they able or didn't attempt to conquer Korea, whom were conquered by the Mongols? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/16x0cf/why_didnt_any_of_chinas_dynasties_attempted_to_or/ | {
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"In general, the Chinese were not interested in constant expansion like the Mongols, who needed conquests to satisfy everyone. And neither were the Koreans. So the Chinese and Koreans were generally ... | [] | [] | [
[],
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"http://upload.wikimedia.org/wikipedia/commons/c/c3/Han_map.jpg",
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"http://en.wikipedia.org/wiki/Goguryeo%E2%80%93Sui_War",
"http://en.wikipedia.org/wiki/Goguryeo%E2%80%93Tang_War",
"http://en.wikipedia.org/wiki/Four_Commanderies_of_Han",
... | |
1dhv45 | how do you get a haircut? | Okay, so somehow in my 22 years on this earth I have never, ever had to go to a salon by myself for a haircut. However, seeing as I need one badly and am 22 I think it's time to cut the cord (or hair if terrible puns is your thing). Quick background before my specific questions:
I'm in college and live very close to ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1dhv45/eli5_how_do_you_get_a_haircut/ | {
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" > Am I looking for a barber, stylist, salon?\n\nAny of those, depends on your taste. A barber shop tends to be more masculine, older, ethnic, and simple. A stylist/salon tends to have more skill, bu... | [] | [] | [
[],
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[]
] | |
2myfgs | why does the packaging on chicken say to use it within 48 hours but the expiration date is beyond that and will be sitting in the store for more than 48 hours? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2myfgs/eli5why_does_the_packaging_on_chicken_say_to_use/ | {
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"The expiration date is the date it can sit on the grocery shelves. It starts warming up once you remove it from those shelves and bring it home. Who knows if it'll sit in your car for an hour, or if your fridge temp is set higher than normal. ... | [] | [] | [
[]
] | ||
3bafwx | Why do cows have multiple stomachs whereas horses do not, even though they both rely on eating and breaking down cellulose? | askscience | http://www.reddit.com/r/askscience/comments/3bafwx/why_do_cows_have_multiple_stomachs_whereas_horses/ | {
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... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[
"http://www.mad-cow.org/oct99_vlate_news.html",
"https://microbewiki.kenyon.edu/index.php/Bovine_Rumen"
]
] | ||
fxhx3y | how do anti-inflammatory pills work? and what makes them different to painkillers? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fxhx3y/eli5_how_do_antiinflammatory_pills_work_and_what/ | {
"a_id": [
"fmugpb5",
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"text": [
"Painkillers typically work by interrupting the signals between neurons and the brain that signal pain. \n\n\nAnti-inflammatory typically prevent the body's natural inflammation functions from working, such as binding and ne... | [] | [] | [
[],
[]
] | ||
3oguwx | Why did Calabria move? | In Roman times, [Calabria](_URL_0_) referred to the heel of Italy, now called Salento. But now it refers to the toe, which was once called Bruttium. When and why did this change take place?
This question was asked [before](_URL_1_), but didn't yield any answers. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3oguwx/why_did_calabria_move/ | {
"a_id": [
"cvxeif5"
],
"score": [
14
],
"text": [
"I just did some investigation and apparently the Byzantine Empire combined Apulia, Bruttium and Calabria into a single province which they called Calabria. The Byzantine Empire then lost control of most of this province, leaving only Bruttium un... | [] | [
"https://upload.wikimedia.org/wikipedia/commons/d/d0/Shepherd-c-030-031.jpg",
"https://www.reddit.com/r/AskHistorians/comments/2j7t5k/why_did_calabria_and_apulia_switch_names/"
] | [
[
"http://www.culturaservizi.it/vrd/files/RS40_migrazione_nome_calabria01.pdf",
"http://oll.libertyfund.org/titles/gibbon-the-history-of-the-decline-and-fall-of-the-roman-empire-vol-8?q=calabria#lf0214-08_footnote_nt_047"
]
] | |
2m1kb2 | My grandfather gave me a set of Native American Arrowheads. I would like to share them with my class, but I know nothing about them. Help! | Hello, elementary school teacher here. Teaching a unit about Native American history soon and would love to share my arrowheads, but I am clueless as to where they're from, or if they're even real. There are 14 arrowheads in the collection and what looks like some sort of sharp tool. They would likely have been found i... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2m1kb2/my_grandfather_gave_me_a_set_of_native_american/ | {
"a_id": [
"cm04aqb",
"cm070eb",
"cm0n0xj"
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"score": [
3,
12,
4
],
"text": [
"Wither or not your arrow heads are \"authentic\" I have no clue, but you could [show the kids how these arrow heads are made by hand.](_URL_0_) And who knows, maybe your willing to allow the kids to tr... | [] | [
"http://imgur.com/a/EybK4"
] | [
[
"https://www.youtube.com/watch?v=y6QO2DthGPc"
],
[
"http://i.imgur.com/Caca7sp.jpg",
"http://www.projectilepoints.net/Points/Adena.html",
"http://en.wikipedia.org/wiki/Spear-thrower",
"http://www.reddit.com/r/AskHistorians/comments/1mc4m8/were_there_any_civilizations_near_the_ohio_river/cc... | |
477hdn | how in the fruit did the spelling for "bologna" and "colonel" come about? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/477hdn/eli5how_in_the_fruit_did_the_spelling_for_bologna/ | {
"a_id": [
"d0ark2v",
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"score": [
3,
10
],
"text": [
"Bologna is pretty phonetic italian, you just don't know how to pronounce it. Hint: it's not *baloney*.",
"Bologna is a city in Italy where they are famous for their bologna sausage (which differs depending on where it g... | [] | [] | [
[],
[]
] | ||
1g6ftz | Did the average roman soldier's training comprise of any sort of weights regime? | This could include the use of bodyweight and/or weights exercises | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1g6ftz/did_the_average_roman_soldiers_training_comprise/ | {
"a_id": [
"cah88or",
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4,
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"text": [
"They used extra heavy swords and shields during training, and were exercised extensively. It's similar to baseball players putting weights on their bats before they get to the plate so the bat feels light and responsive. As ... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/De_Re_Militari"
]
] | |
581k8y | why is specific heat an intensive property? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/581k8y/eli5why_is_specific_heat_an_intensive_property/ | {
"a_id": [
"d8wpqsf"
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"score": [
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"text": [
"Intensive properties are ones that don't change with the size of the sample. Since specific heat gives a value per unit weight, it doesn't change with the amount of material you have. "
]
} | [] | [] | [
[]
] | ||
16xv7r | Can we predict the evolution of currently living species? | I realize that it will be very difficult for us to see any noticeable signs of evolution during our very short time as a modern human. | askscience | http://www.reddit.com/r/askscience/comments/16xv7r/can_we_predict_the_evolution_of_currently_living/ | {
"a_id": [
"c80dqhj"
],
"score": [
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],
"text": [
"The short answer is 'no,' we can't predict evolution for any given population or species. Two of the four forces of evolution - mutation and genetic drift - are inherently random, and it's impossible to know the outcome of those processes at any... | [] | [] | [
[]
] | |
hak8x | Question about near speed of light travel | I have been told that if a spaceship travelling nearly the speed of light makes a journey that takes 10 years relative to it, 1000 years will have passed on Earth when it returns.
Would it be possible for a second spaceship to make the same journey, taking the same time relative to Earth, but at a different speed? Say... | askscience | http://www.reddit.com/r/askscience/comments/hak8x/question_about_near_speed_of_light_travel/ | {
"a_id": [
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"No. To get a 1:100 time dilation you would be traveling very close to 99.9999% of the speed of light. So it would have traveled close to a 1000 light years distance. To travel that distance at 1/1000... | [] | [] | [
[],
[],
[]
] | |
s53vi | Is there any truth to the claim that Earth is losing it's magnetic field? | I have seen a couple of internet articles, but I wanted to know the truth behind this.
_URL_0_
_URL_1_
_URL_2_
_URL_3_
What timescale are we looking at? What are the effects of this going to be on society and daily life? | askscience | http://www.reddit.com/r/askscience/comments/s53vi/is_there_any_truth_to_the_claim_that_earth_is/ | {
"a_id": [
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6
],
"text": [
"Well, the magnetic field will dissipate, but this will be on the time-scale of billions of years in the future. The reason why this is, is because the magnetic field is created by the flow of current, induced inside the out... | [] | [
"http://news.nationalgeographic.com/news/2004/09/0909_040909_earthmagfield.html",
"http://www.icr.org/article/depletion-earths-magnetic-field/",
"http://www.psc.edu/science/Glatzmaier/glatzmaier.html",
"http://www.science20.com/make_love_not_war/blog/earth%E2%80%99s_weakening_geomagnetic_force_and_possible_po... | [
[],
[
"http://en.wikipedia.org/wiki/Magnetic_pole_reversal"
]
] | |
9q7km5 | why can't we create synthetic animal products? | Goose down, Spider web proteins, Horseshoe blood, Leather, and probably countless more animal products have synthetic counterparts but can not be synthetically produced. Lots of places say we just don't understand them, or they're too complex, but if we can analyze them down to the atomic structure, and perhaps even pa... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9q7km5/eli5_why_cant_we_create_synthetic_animal_products/ | {
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"text": [
" > Goose down\n\nPolyester fill.\n\n > Spider web proteins\n\nIt has been done, but not in ways which are easily scaled up for industrial production. But if you just want small ... | [] | [] | [
[],
[],
[
"http://www.sciencemag.org/news/2017/10/spinning-spider-silk-startup-gold",
"https://www.theatlantic.com/science/archive/2018/05/blood-in-the-water/559229/",
"http://blogs.discovermagazine.com/d-brief/2017/09/22/lab-grown-leather-modern-meadow/#.W80Lf0tKhHY",
"https://www.smithsonianma... | |
1f34bi | How did humans spread across continents? | My question is very simple. When Cristopher Columbus arrived to America, there were already humans there. How did they get there?
I know 200 million years ago there was Pangeia, and all the continents were united, but that was before the appearance of humans. Thanks for the answers. | askscience | http://www.reddit.com/r/askscience/comments/1f34bi/how_did_humans_spread_across_continents/ | {
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"text": [
"During the end of the last glacial period (~13,000-10,000 years ago), sea levels were lower, and the [Bering Strait](_URL_1_) which nowadays separates Russia and Alaska wasn't sub... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Settlement_of_the_Americas",
"http://en.wikipedia.org/wiki/Bering_Strait",
"http://en.wikipedia.org/wiki/Beringia"
],
[],
[
"http://upload.wikimedia.org/wikipedia/en/c/c8/Human_migration.png"
],
[
"http://en.wikipedia.org/wiki/File:Map-of-human-migration... | |
u05yz | AskScience: What are the pros and cons of Ceramic vs. Metallic Knives? | I know there are plenty of places to get information on it, but it seems like everywhere I go its basically just metallic/ceramic knife people trying to sell their product. I'd love to get a good understanding of why I should chose either (or both!) from a Material Science standpoint. | askscience | http://www.reddit.com/r/askscience/comments/u05yz/askscience_what_are_the_pros_and_cons_of_ceramic/ | {
"a_id": [
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"text": [
"So I have both and I like both. I am not a chef or anything but I'll tell you my experience. Ceramics are harder than metals. This allows you to make them extremely sharp. Almost scary sharp. I have a ceramic paring knife ... | [] | [] | [
[],
[]
] | |
1062sf | [Biology] What is the reason behind increased human height in Europe in the last 150 years? | For exemple, I just read that in the 19th century, the Netherlands was a country renowned for it's short population. In fact, the average height of Dutch soldiers in that time was about 5'4 Today, the males there average 6'0, an impressive difference.
Even though human height has increased everywhere in the world, th... | askscience | http://www.reddit.com/r/askscience/comments/1062sf/biology_what_is_the_reason_behind_increased_human/ | {
"a_id": [
"c6ar96z"
],
"score": [
2
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"text": [
"I asked a Dutch friend why he and his countrymen are so tall. He said it is from drinking milk, where the Netherlands ranks 3rd (he said 1st) in milk consumption. This would be another good question: is there a positive correlation between per ... | [] | [
"http://en.wikipedia.org/wiki/Human_height"
] | [
[]
] | |
osvgr | My dog and cat grow extra hair. A bear hibernates. Do humans go through any physiological changes during winter? | Like I said in my question, many animals go through changes that allow them to survive the cold and lack of food. As a person, I "get used" to the cold so that a "warm" day in January (maybe 50 Fahrenheit) is fine in a tee shirt, but in July I'd be very chilly. Are there actually physical changes to my body goes throug... | askscience | http://www.reddit.com/r/askscience/comments/osvgr/my_dog_and_cat_grow_extra_hair_a_bear_hibernates/ | {
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"c3jvi7y"
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"score": [
21,
56,
13,
3
],
"text": [
"I'm having a difficult time finding articles that explicitly discuss any physiological changes humans go through. It's a common misconception that people gain significant amoun... | [] | [] | [
[
"http://www.amazon.com/Surviving-Extremes-Doctors-Journey-Endurance/dp/0312280777"
],
[
"http://diabetes.diabetesjournals.org/content/58/11/2583.full",
"http://en.wikipedia.org/wiki/Brown_adipose_tissue"
],
[
"http://en.wikipedia.org/wiki/Seasonal_affective_disorder"
],
[]
] | |
418okt | how browser finds website what we type in address bar? or how email recipient is found almost immediately. is there some central database of websites or emails? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/418okt/eli5_how_browser_finds_website_what_we_type_in/ | {
"a_id": [
"cz0h694"
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"score": [
16
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"text": [
"There's two halves to the answer: DNS and BGP.\n\nDNS (Domain Name System) is the internet equivalent to a phone book: given a domain name (the likes of www._URL_0_, _URL_1_), it gives you an IP address that you should connect to to talk to that... | [] | [] | [
[
"reddit.com",
"www.google.com",
"www.reddit.com"
]
] | ||
2qosuv | Why do people put meat on black eyes? | Does this actually help somehow, or is it just a TV thing?
| askscience | http://www.reddit.com/r/askscience/comments/2qosuv/why_do_people_put_meat_on_black_eyes/ | {
"a_id": [
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"score": [
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3
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"text": [
"It's chilled meat (as in from a fridge, not the freezer), and it's a substitute for a cold compress. Since meat takes a while to warm up but is still malleable, it can be used as a compress that is both not freezing to the s... | [] | [] | [
[],
[
"http://upload.wikimedia.org/wikipedia/commons/e/ef/Enswell.JPG"
]
] | |
1dfm9t | Is there a calender for other planets? Like a set point where we consider that planet's day, month, or year to begin? | askscience | http://www.reddit.com/r/askscience/comments/1dfm9t/is_there_a_calender_for_other_planets_like_a_set/ | {
"a_id": [
"c9pvvwx"
],
"score": [
2
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"text": [
"First some important terminology. There are a few different kinds of days and years in use. The difference between them is what the rotation or revolving is in relation to.\n\nA sidereal year or a sidereal day is measured in relation to far away ... | [] | [] | [
[
"http://astro.unl.edu/classaction/animations/coordsmotion/siderealSolarTime.html"
]
] | ||
7812lv | why are milk and egg prices so low right now? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7812lv/eli5_why_are_milk_and_egg_prices_so_low_right_now/ | {
"a_id": [
"doq54z9"
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"score": [
2
],
"text": [
"Not sure if \"right now\" is particularly interesting time for prices.\n\nBut if you're wondering, prices in grocery stores for milk specifically are generally kept very low. Large grocery stores often heavily compete on the price of milk with e... | [] | [] | [
[]
] | ||
2hmsqg | why don't engines like hot air? | What is the point of intercooling? Can't you do combustion with both hot and cold air? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2hmsqg/eli5_why_dont_engines_like_hot_air/ | {
"a_id": [
"cku314a",
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"score": [
5,
2
],
"text": [
"Hot air is less dense than cool air is, so for a given volume and pressure, there's less air in a hot charge than in a cool one - and because the range of air:fuel ratios at which fuel vapor burns well is fairly narrow, less... | [] | [] | [
[],
[]
] | |
8oo5wl | what is the difference between melody and rhythm? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8oo5wl/eli5_what_is_the_difference_between_melody_and/ | {
"a_id": [
"e04vbkd",
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"score": [
2,
3,
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"text": [
"The melody is the tune, the tonal highs and lows. The rhythm is the flow of music, which can be set with drums alone. Generally, you feel the rhythm of the music, but you listen for the melody.",
"R... | [] | [] | [
[],
[],
[]
] | ||
2ydbxx | why are some countries like india and china so dirty despite having the wealth not to be? is it a phase? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ydbxx/eli5why_are_some_countries_like_india_and_china/ | {
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3,
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"text": [
"It's a byproduct of two main factors, their large population density in major cities, which results in trash and sewage and such, and their rapid industrial... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
1chxqk | how can netflix put all kinds of cool tv shows online for less than $10/month with no commercials when cable companies charge people $75/month or more and you do have to watch commercials? | Plus with Netflix I can watch whatever I want instead of what someone else put on. I don't get how the economics work?
Is cable a giant rip off, or is Netflix spending investors money which will eventually run out?
Edit: I didn't realize that the shows on Netflix aren't new. I'm just thrilled they have Star Trek and t... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1chxqk/eli5how_can_netflix_put_all_kinds_of_cool_tv/ | {
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"c9gskxd",
"c9gsmku",
"c9gsym6",
"c9gt1z5",
"c9gt4ri",
"c... | [] | [] | [
[],
[],
[
"http://allthingsd.com/20100308/hate-paying-for-cable-heres-the-reason-why/",
"http://seekingalpha.com/article/1150191-netflix-rising-content-costs-stump-growth"
],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[
"http://m.youtube.com/#/watch?v=0ilMx7k7m... | |
2ioffs | How environmentally resilient is Ebola? | askscience | http://www.reddit.com/r/askscience/comments/2ioffs/how_environmentally_resilient_is_ebola/ | {
"a_id": [
"cl43d8t"
],
"score": [
3
],
"text": [
"The answers given here are not correct. See this AMA for the answer:\n\n_URL_0_"
]
} | [] | [] | [
[
"http://www.reddit.com/r/science/comments/2hy3r9/science_ama_series_ask_your_questions_about_ebola/ckx2s5s"
]
] | ||
wq3yi | How feasible is a *FULLY* bionic eye? | I'm aware of bionic eye *implant* tech, but I'm not talking about that.
I'm thinking more along the lines of the eye [Knuckles gets after he loses his organic eye 25 years in the future](_URL_0_) in the Sonic the Hedgehog comics.
The reason I'm asking is because bionic eye implants only help people with certain speci... | askscience | http://www.reddit.com/r/askscience/comments/wq3yi/how_feasible_is_a_fully_bionic_eye/ | {
"a_id": [
"c5fh8ea"
],
"score": [
2
],
"text": [
"It's feasible from the tech we have now but would require a *lot* of designing and engineering. The two main issues are hooking up to the optic nerve in such a way as to reliably send signals to the brain, and then sending the correct signals.\n... | [] | [
"http://images2.fanpop.com/image/photos/13600000/Knuckles-25-years-later-knuckles-and-julie-su-13620807-250-385.jpg"
] | [
[]
] | |
372l0m | what are real dangers of sophisticated ai and why do scientists warn us it could pose a risk for the future of mankind? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/372l0m/eli5_what_are_real_dangers_of_sophisticated_ai/ | {
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"score": [
4,
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2,
19,
14,
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"text": [
"If you were to write a computer program that could make it's decisions based on logic, an... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[]
] | ||
4b99a7 | why we shouldn't look at welding flashes? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4b99a7/eli5_why_we_shouldnt_look_at_welding_flashes/ | {
"a_id": [
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"score": [
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23,
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3,
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61,
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"text": [
"The real-life flashes are so bright (includi... | [] | [] | [
[],
[],
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[],
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[],
[],
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[]
] | ||
8zhtf5 | if there was life on a planet the size of the sun, would those life forms be proportionally bigger than life on earth? how and why? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8zhtf5/eli5_if_there_was_life_on_a_planet_the_size_of/ | {
"a_id": [
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2,
2,
2
],
"text": [
"A sun-sized planet would be immensely hot, and have an absolutely crushing force of gravity at the surface. If any life at all existed there I would expect it to be very small. Those aren't exactly good... | [] | [] | [
[],
[],
[]
] | ||
2alc4n | why i feel sick after eating 'rich', fatty or sickly sweet foods? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2alc4n/eli5_why_i_feel_sick_after_eating_rich_fatty_or/ | {
"a_id": [
"ciwc41v",
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"score": [
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7
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"text": [
"If your diet is rather healthy eating food high in fat or sugar will make you feel ill since your body isn't used to it",
"Ultimately, any food you consumed is intended for use as fuel by your body. Fats are not easily ... | [] | [] | [
[],
[]
] | ||
15nflx | jewish beliefs. | I've never really been very knowledgeable on any religions. I've met this girl and her family who are jewish. It seems like a pretty strict regimen. I've been invited to synagogue a few times but have politely turned them down so far. I'd like to have a better understanding of the beliefs so I can have a proper convers... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/15nflx/eli5_jewish_beliefs/ | {
"a_id": [
"c7o12wq"
],
"score": [
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],
"text": [
"Jews believe in God and the first five books of Moses. They don't believe that Jesus was the son of God or the Messiah. Jews are still waiting for their Messiah.\n\nThere are 613 commandments in the bible ranging from \"Remember the Sabbath day a... | [] | [] | [
[]
] | |
6ea5sp | what causes a daily rise and fall in ground water levels? | I recently built a monitor, using float switches and a raspberry pi, to monitor my house sump pit. I've gathered data over the past week and noticed a small daily (roughly) cycle in the amount of water entering my sump pit. I would like to know what causes the cycle. The sump pit is ~2m below grade. The weather has bee... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6ea5sp/eli5_what_causes_a_daily_rise_and_fall_in_ground/ | {
"a_id": [
"di8udqo"
],
"score": [
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],
"text": [
"Not a scientist. But I worked on rain garden and community education. I bet if your watershed is large enough it could be water accumulated from a storm days ago that has slowly made its way to you.\nWhat's the terrain like?"
]
} | [] | [] | [
[]
] | |
38r6zj | Has time altered the way people report the holocaust? | Are history books reporting it any differently than newspapers did at the time?
In particular I saw a moderately upvoted post on reddit saying that all the gas in the camps was never used to kill people, just pests. It said that during the years we've romanticized the war so much that we're not studying facts anymo... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/38r6zj/has_time_altered_the_way_people_report_the/ | {
"a_id": [
"crxdxcg",
"crxe239"
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"score": [
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41
],
"text": [
"A relevant link. The Daily telegraph reported on extermination camps in 1942. It cites the original article as well as its reception, which was very low and didn't gain much traction.\n\n_URL_0_\n\nedit: Generally, in the ... | [] | [] | [
[
"http://www.theguardian.com/media/greenslade/2015/jan/27/daily-telegraphs-holocaust-article-in-1942-that-went-unheralded"
],
[]
] | |
2jc0s2 | why does the military use the word "click" when referring to distance? how far is it, and where did it come from? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2jc0s2/eli5_why_does_the_military_use_the_word_click/ | {
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"score": [
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"text": [
"Also, they spell it Klick (just using K for kilometer)",
"Saying klick in the radio walky-talky thingy is simpler then saying kilometer. Also it can't be confused with other wo... | [] | [] | [
[],
[],
[],
[
"http://usmilitary.about.com/od/theorderlyroom/f/faqklickdef.htm"
]
] | ||
dl5jpy | why is the paint i put on the thing i'm painting still wet, but the paint i got on my shirt already dry? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dl5jpy/eli5_why_is_the_paint_i_put_on_the_thing_im/ | {
"a_id": [
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"score": [
7,
145,
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],
"text": [
"More paint dries slower. I would assume there isn't as much paint on your shirt. Not only this, but Your shirt is probably moving around a lot, which exposes it to fresh air and ... | [] | [] | [
[],
[],
[],
[]
] | ||
26bvt1 | - how to play blackjack? | Going to the Casino for the first time tonight, and I want to play Blackjack! But I don't want to show that I don't know what I am doing.
Edit* Thanks everyone for the great explanations on how to play Blackjack! Very helpful, I hope I make some money tonight
| explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/26bvt1/eli5_how_to_play_blackjack/ | {
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"score": [
2,
3,
3,
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"text": [
"Practice this line before you go\n\n_URL_0_",
"Anything 10 or higher in the deck = 10\n\nAces can be either 11... | [] | [] | [
[
"http://youtu.be/mKl11EzMTAE?t=31s"
],
[],
[],
[],
[
"http://wizardofodds.com/play/blackjack/"
],
[],
[]
] | |
37hk65 | if you only had one gallon of gas left in your car, what would be the best way to get the furthest distance? | Say you are on the highway and notice you have only one gallon left in your tank and you don't know where the nearest station is. Assuming that time is not an issue and there are no other cars on the road and the road is perfectly flat, how could you get the most distance from that one gallon of gas? Would it be best t... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/37hk65/eli5_if_you_only_had_one_gallon_of_gas_left_in/ | {
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"score": [
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69,
4,
42,
19,
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"text": [
"Accelerating requires a lot of energy, the b... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[],
[],
[]
] | |
4jtdrn | what happens in our brains when we realize we've driven miles/minutes and don't even remember consciously driving them? |
Side note- doesn't this happen in dreams? You go places and can't remember how you got there...is there a relation? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4jtdrn/eli5_what_happens_in_our_brains_when_we_realize/ | {
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"score": [
172,
20,
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"text": [
"This happens when your subconscious mind starts handling processes that you normally control consciously. Normally, you're paying attention to the road and staying alert. When y... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Highway_hypnosis"
],
[],
[
"http://www.parents.com/baby/safety/car/danger-of-hot-car-for-children/"
]
] | |
bfec9a | why do/how can "zero/low calorie sweeteners" have sugar, specifically dextrose, in them, if they are supposed to be sugar substitutes? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bfec9a/eli5_why_dohow_can_zerolow_calorie_sweeteners/ | {
"a_id": [
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"score": [
3,
2,
2
],
"text": [
"Most say no or low sugar because they generalize glucose as sugar and other forms not. Also glucose is harder to metabolize than say sucrose, dextrose, fructose, lactose etc. So technically they aren't ... | [] | [] | [
[],
[],
[
"https://chem.libretexts.org/Bookshelves/Biological_Chemistry/Supplemental_Modules_(Biological_Chemistry\\)/Carbohydrates/Monosaccharides/Glucose_(Dextrose\\)"
]
] | ||
yrlfp | how wells work, and why well water is safe to drink | So can you just sink a well pretty much anywhere and have a good chance of finding water? And why don't wells usually need purification? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/yrlfp/eli5_how_wells_work_and_why_well_water_is_safe_to/ | {
"a_id": [
"c5y7xu3"
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"score": [
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],
"text": [
"In a lot of places, the soil is saturated with water up to a certain level (elevation). If you dig a hole through this layer, that water will drain into the hole (the well) in a way that looks something like this: _URL_0_\n\nYou can't just sink ... | [] | [] | [
[
"http://groundwater.oregonstate.edu/groundwater/images/depressionb.gif"
]
] | |
2glmrk | how a company like netflix works? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2glmrk/eli5_how_a_company_like_netflix_works/ | {
"a_id": [
"ckk9m6b"
],
"score": [
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],
"text": [
"They purchase DVDs to rent out by mail, and license shows and movies to stream out.\n\nSubscribers pay a monthly fee for streaming and maybe DVD rental. Netflix uses this money to pay for the license fees for the streaming, and to purchase new DV... | [] | [] | [
[]
] | ||
1jnvk1 | how does pantone influence fashion and design? what gives them the authority to choose the color palette for the season? | I know that Pantone isn't primarily a fashion company, so why do they put out the [Color Report](_URL_0_)? And is this report a *reflection* of the colors for upcoming seasons or a *suggestion* that sways the designers and market? And why is a printing company talking about fashion anyway? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1jnvk1/eli5_how_does_pantone_influence_fashion_and/ | {
"a_id": [
"cbgj0uj"
],
"score": [
2
],
"text": [
"They don't choose the colors fashion designers will pick, but they do provide a consistent point of reference on a given color. Instead of \"light blue\" I can tell you I want Blue #123 and it will be exactly what I wanted. Certain colors trend ... | [] | [
"http://www.pantone.com/pages/fcr.aspx?pg=21057&ca=4"
] | [
[]
] | |
egqq06 | How does the brain isolate a sound and focus on just a specific sound? | When you hear a music, ambient sounds, people talk or anything with sound. You can just focus on 1 sound and isolate all other like when hearing a music or musical instruments you can focus on the violin sound or the trombone or the flutes or maybe hear only a certain frequency or a specific person talking. How does th... | askscience | https://www.reddit.com/r/askscience/comments/egqq06/how_does_the_brain_isolate_a_sound_and_focus_on/ | {
"a_id": [
"fc9q429",
"fc9qpzx"
],
"score": [
8,
292
],
"text": [
"If I remember correctly from my psychology course, one model (the attenuation model by Anne Treisman) proposes that there is a mechanism in our brain that adjusts the \"strength\" of stimuli, or sound signals if you will, ... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Attenuation_theory"
],
[
"https://en.wikipedia.org/wiki/Fourier_analysis",
"https://www.cmu.edu/dietrich/psychology/shinn/publications/pdfs/2019/2019cogneuro_shinn.pdf",
"https://en.wikipedia.org/wiki/Cocktail_party_effect",
"https://link.springer.com/chapter... | |
av7up3 | German Army in the 1920s - Training of the Officer Cadre | Greetings all.
Recently I was at a conference and someone mentionned briefly at a glance that Germany in the 1920s was heavily restricted in terms of military personnel as we know. But the goal of the head of the army (?) was to give more adequate and higher level training to have people be able to do function 2-3 ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/av7up3/german_army_in_the_1920s_training_of_the_officer/ | {
"a_id": [
"ehdpvah"
],
"score": [
7
],
"text": [
"In July 1919 a certain Hans von Seeckt, already having been Chief of Staff for the Ottoman army in 1918, became the last Chief of Staff for the German Imperial army. After the general staff became illegal according to the terms of the Treaty of V... | [] | [] | [
[]
] | |
99y81c | What was the curriculum like in segregated public schools? Was there any freedom to deviate from white schools to have a more accurate or nuanced view of US history or civil rights? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/99y81c/what_was_the_curriculum_like_in_segregated_public/ | {
"a_id": [
"e4rzv5n"
],
"score": [
34
],
"text": [
"This is a great question! The answer, like so many things in American education is basically: it depends. First, a some quick background about your question.\n\nDuring the colonial era, an educated man was one with a classical education. This me... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/7hhlvv/when_exactly_were_us_students_first_introduced_to/dqt1t36/",
"https://books.google.com/books?id=Fm8uAAAAYAAJ&dq=Quackenbo's%20United%20States%20History&pg=PP3#v=onepage&q&f=false"
]
] | ||
g6ovm | Is there a standard way to represent DNA in a computer (e.g. 1 codon per byte)? | If you need 6 bits per codon, are the other 2 bits in a byte used for anything? Or would you use 3 bytes for 4 codons? Just wondering if there's a standard. | askscience | http://www.reddit.com/r/askscience/comments/g6ovm/is_there_a_standard_way_to_represent_dna_in_a/ | {
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"c1lbnn6",
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"score": [
4,
3,
3,
2,
3,
2
],
"text": [
"Strings. (No, they're not memory-efficient, but you don't have to write custom functions for reading/writing to them.)",
"I've repr... | [] | [] | [
[],
[],
[],
[
"http://en.wikipedia.org/wiki/FASTA_format"
],
[
"http://en.wikipedia.org/wiki/Nucleic_acid_sequence#Notation"
],
[
"http://ds9a.nl/amazing-dna/"
]
] | |
utwam | I work for the Kingston Historical Society in Ontario, Canada. This artifact was donated to us. What is it? | _URL_0_
The artifact was donated in 1971, but we can't seem to find our accession sheet for it (and even if we did, we doubt that it would provide much information). It appears to be made of cast iron and I would estimate it to be between 2 and 3 feet long (we didn't have a ruler handy when we visited the archives). M... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/utwam/i_work_for_the_kingston_historical_society_in/ | {
"a_id": [
"c4yiize"
],
"score": [
13
],
"text": [
"Definitely a scale as HistGeek1 said. And it looks very much like [this E Whitfield hanging beam scale](_URL_3_).\n\nI found a few other examples of similar scales:\n\n[Scale 1](_URL_1_)\n\n[Scale 2](_URL_0_)\n\n[Scale 3](_URL_2_)\n\nThe descri... | [] | [
"http://i.imgur.com/NigcS.jpg"
] | [
[
"http://www.ebay.com/itm/ANTIQUE-HANGING-MEAT-OR-COTTON-SCALE-/261038318730?pt=LH_DefaultDomain_0&hash=item3cc718a48a#ht_500wt_1287",
"http://www.ebay.com/itm/Old-Antique-Cotton-Scale-Star-Design-Hooks-Cast-Iron-Tobacco-Original-Weight-VTG-/290690294801#ht_500wt_922",
"http://www.ebay.com/itm/Anti... | |
6csvnk | why do people say they will treat bombs as a terrorist attack until proven otherwise? isn't a bombing in nature an act of terrorism regardless of who did it? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6csvnk/eli5_why_do_people_say_they_will_treat_bombs_as_a/ | {
"a_id": [
"dhx5p4b",
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"dhx8rbx",
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"dhxcpk9",
"dhxdkj1",
"dhxerg7",
"dhxfe2w",
"dhxfiag",
"dhxfjmt",
"dhxgkkc",
"dhxgr46",
"dhxhs7v",
"dhxhwgl",
"dhxibbc",
"dhxiix6",
"dhxjgw6",
"d... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
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"https://en.wikipedia.org/wiki/Borussia_Dortmund_team_bus_bombing"
],
[
"https://en.wikipedia.org/wiki/2014_East_Harlem_gas_explosion",
"https://en.wikipedia.org/wiki/2015_East_Village_gas_explosi... | ||
jaspg | Why do people say there is a connection between music and mathematics? | I never understood it. Does it have something to do with Fourier? Or is it because of the pattern of frequencies? | askscience | http://www.reddit.com/r/askscience/comments/jaspg/why_do_people_say_there_is_a_connection_between/ | {
"a_id": [
"c2akaau",
"c2akh5c",
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"c2akh5c",
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"score": [
7,
35,
7,
2,
2,
10,
3... | [] | [] | [
[
"http://wheelof.com/whitney/"
],
[],
[],
[],
[],
[],
[
"http://www.youtube.com/watch?v=-6w9VYbptPQ"
],
[],
[
"http://wheelof.com/whitney/"
],
[],
[],
[],
[],
[],
[
"http://www.youtube.com/watch?v=-6w9VYbptPQ"
],
[]
] | |
1gxhcs | Dear AskHistorians I am really interested in Urbanization can you lead me to books or articles that can give me more insight into what leads to urbanization, what are the results of urbanization and anything else on the topic of Urbanization? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1gxhcs/dear_askhistorians_i_am_really_interested_in/ | {
"a_id": [
"caosf1c"
],
"score": [
2
],
"text": [
"Well, if you haven't read Jane Jacobs, that's a must."
]
} | [] | [] | [
[]
] | ||
4skj02 | Which one provides more energy? Protein or Carbohydrate? | My teacher told me that, if you have a lojg marathon then you should eat proteins because carbohydrates get burn off quickly. But I don't understand how proteins will be able to provide energy? | askscience | https://www.reddit.com/r/askscience/comments/4skj02/which_one_provides_more_energy_protein_or/ | {
"a_id": [
"d5abzqr"
],
"score": [
4
],
"text": [
"Both protein and carbohydrates have about the same available energy density, 4 kCal/g, but protein metabolism tends to be slower because the body holds onto amino acids for its own protein synthesis and only breaks them down as an energy source w... | [] | [] | [
[
"https://www.rpi.edu/dept/bcbp/molbiochem/MBWeb/mb2/part1/aacarbon.htm"
]
] | |
yz51p | My parents are convinced that they need to start drinking ionized water because they say it balances your pH. Is there any science behind the benefits of drinking ionized water or high pH water? | askscience | http://www.reddit.com/r/askscience/comments/yz51p/my_parents_are_convinced_that_they_need_to_start/ | {
"a_id": [
"c6036si",
"c603pr8"
],
"score": [
12,
6
],
"text": [
"It's nonsense. See this post from a little while ago _URL_0_\nIt certainly won't increase the pH of you're body. The pH of your body is tightly controlled to be at the optimum pH for all your enzymes. Even if it did somehow... | [] | [] | [
[
"http://www.reddit.com/r/askscience/comments/ronun/alkaline_water_fact_or_fiction/"
],
[]
] | ||
c1ckun | how do wasps build nests? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/c1ckun/eli5_how_do_wasps_build_nests/ | {
"a_id": [
"ercbf0r",
"ercbi6e"
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"score": [
2,
2
],
"text": [
"Queen chews on the wood, mixing it with saliva, turning it into paper like pulp. Once she chooses a location, helper drones arrange pulp into hexagonal tubes.",
"They find exposed wood (generally from dead trees or falle... | [] | [] | [
[],
[]
] | ||
xd83g | If the Higgs' Boson is proven to be a particle/field that gives a particle mass, does mass then become a vector quanitity? | I read "The 'everything you need to know about the Higgs boson' thread," but I guess it just didn't answer my question (and if it did, I couldn't understand it or couldn't put pieces together).
And if mass does become a vector quantity, do we have to re-work everything? | askscience | http://www.reddit.com/r/askscience/comments/xd83g/if_the_higgs_boson_is_proven_to_be_a/ | {
"a_id": [
"c5lcuse"
],
"score": [
2
],
"text": [
" > And if mass does become a vector quantity, do we have to re-work everything?\n\nYou should have known that the answer to that question would definitely be no. The Higgs model was created to explain what we observe, including that mass is a sc... | [] | [] | [
[]
] | |
rllvv | What is this? | It says ammonite, but they have this _URL_0_ and then they have some that look like a snail shell almost, just wondering if they were both shelled cephalopods or if it was something else | askscience | http://www.reddit.com/r/askscience/comments/rllvv/what_is_this/ | {
"a_id": [
"c46t30l",
"c46w7pz"
],
"score": [
5,
2
],
"text": [
"Yes, shelled cephalopods. Predatory mollusks similar to the nautilus.\n\nThe picture that you showed is of a fossil ammonite. These particular ones are among the most abundant fossils on Earth. Many (like the one in the pict... | [] | [
"http://www.imgur.com/Y1y1x.jpg"
] | [
[],
[]
] | |
1dpe7p | What to study to show an "in depth knowledge of" modern China. x-post r/china | I am an American history major and am trying to determine what to focus on for my second field. Modern China seems like it would distinguish me from all my peers who study Latin America or Ancient Europe. I want to study and see if studying China is something that I will really enjoy. Books and resources of history thr... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1dpe7p/what_to_study_to_show_an_in_depth_knowledge_of/ | {
"a_id": [
"c9smb90"
],
"score": [
3
],
"text": [
"\"The Search for Modern China\" by Jonathan Spence is the classic text for an intro to modern chinese history. "
]
} | [] | [] | [
[]
] | |
38pxyq | the blind spot while driving motor vehicles | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/38pxyq/eli5_the_blind_spot_while_driving_motor_vehicles/ | {
"a_id": [
"crww6xz",
"crww92g",
"crwwcex"
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"score": [
2,
2,
3
],
"text": [
"What exactly do you want to know? if it is really this basic a question you could just google it",
"As distinct from your eye's blind spot where your retina is?\n\nIt's an area between the edge of t... | [] | [] | [
[],
[],
[]
] | ||
4313ue | Could a nuclear reactor operate in space? | If we had a large space vessel that required vast amounts of electricity, could a nuclear reactor operate in space? It's my understanding nuclear reactors need to dissipate a high level of heat, is this possible in space? | askscience | https://www.reddit.com/r/askscience/comments/4313ue/could_a_nuclear_reactor_operate_in_space/ | {
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"text": [
"Yes and no. If you're taking a larger scale fission reactor (like a smaller version of a power plant, or a submarine) yes, but you would need a very large ... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/SNAP-10A",
"https://en.wikipedia.org/wiki/Kosmos_954",
"https://en.wikipedia.org/wiki/US-A"
],
[],
[
"https://en.wikipedia.org/wiki/Systems_for_Nuclear_Auxiliary_Power",
"https://www.google.com/search?q=steam+generator&tbm=isch&tbo=u&sourc... | |
2svxxf | how come we don't spend more research or exposure investigating ufos? | I've been reading a lot on the subject but it always seems like a taboo subject in the mainstream. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2svxxf/eli5_how_come_we_dont_spend_more_research_or/ | {
"a_id": [
"cntd2kg",
"cntd3hx",
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],
"score": [
6,
2,
2
],
"text": [
"A true UFO does not mean aliens. You can bet yer ass the US investigates what other country is illegally using our airspace. Otherwise, there's a good chance that it was a government craft being tested,... | [] | [] | [
[],
[],
[]
] | |
3sa089 | reality doesn't exist until we can measure it | You see a lot of social media buzz about this sort of stuff and experiments done to prove it, but I'm not sure I really understand. What do these things mean and how does it scale? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3sa089/eli5_reality_doesnt_exist_until_we_can_measure_it/ | {
"a_id": [
"cwvc808"
],
"score": [
19
],
"text": [
"The most common interpretation of Quantum Mechanics - the Copenhagen Interpretation - states, that the wave function of a system only collapses into a defined state when it is being measured. Before that, the wavefunction is a in a superposition... | [] | [] | [
[
"https://www.youtube.com/watch?v=ZuvK-od647c",
"https://www.youtube.com/watch?v=dmX1W5umC1c"
]
] | |
byjjyj | why can't we just breed tiny fish babies en masse and dump them in the ocean to solve overfishing? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/byjjyj/eli5_why_cant_we_just_breed_tiny_fish_babies_en/ | {
"a_id": [
"eqi9kgz"
],
"score": [
2
],
"text": [
"Everything you say is reasonable until you get to the \"Assuming that someone is willing to pay for all this.\"\n\nIt would be expensive for the government or whatever organization did that and with the cost passed along to the consumer, prices o... | [] | [] | [
[]
] | ||
4a2rkf | [Physics] Why doesn't a superconducting wire gain infinite current? | So thanks to V=Blv, the voltage induced in a wire is equal to the magnetic field the wire is moving through, times the length of the wire, times the velocity of said wire.
But when combined with I=V/R, a superconducting wire (R=0) should have infinite current!
Please explain, thanks in advance! | askscience | https://www.reddit.com/r/askscience/comments/4a2rkf/physics_why_doesnt_a_superconducting_wire_gain/ | {
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"d0x0w05",
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"score": [
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2
],
"text": [
"Ohm's law V=RI doesn't always hold. It fails in many situations; one of these is superconductors.\n\nThe basic idea of Ohm's law is that electrons scatter randomly with the conduct... | [] | [] | [
[],
[],
[
"https://en.wikipedia.org/wiki/Superconducting_magnetic_energy_storage"
],
[]
] | |
3yv9uq | Why did Mongolia achieve independence so easily whereas other independence movements in China (Tibet, East Turkestan, Outer Mongolia) have failed? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3yv9uq/why_did_mongolia_achieve_independence_so_easily/ | {
"a_id": [
"cyh166o",
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"cyh3zis",
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"score": [
481,
74,
11,
269,
35,
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],
"text": [
"Minor correction in your title: Outer Mongolia is Mongolia. *Inner* Mongolia is the province in China.",
"I think the OP is o... | [] | [] | [
[],
[],
[
"http://interwars.weebly.com/uploads/2/3/3/6/2336762/9437931.png?391x361",
"http://www.zum.de/whkmla/histatlas/russia/cccp1924.gif",
"http://www.euratlas.net/history/hisatlas/china/192620TukiunTRZ.jpg"
],
[],
[],
[]
] | ||
3e7p17 | why do we have both cities and counties? what purpose does this serve? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3e7p17/eli5_why_do_we_have_both_cities_and_counties_what/ | {
"a_id": [
"ctc94bo"
],
"score": [
5
],
"text": [
"Counties are political subdivisions of a state. The are there to provide varying degrees of local governance within the state.\n\nCities are governmental entities where people in a certain area want additional services, and form a government to d... | [] | [] | [
[]
] | ||
96q4ws | why can't necrosis kill tumors? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/96q4ws/eli5_why_cant_necrosis_kill_tumors/ | {
"a_id": [
"e42culr",
"e42cwr7",
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"e42fsb3",
"e42gkio",
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"score": [
28,
355,
82,
15,
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"text": [
... | [] | [] | [
[],
[],
[],
[],
[],
[],
[
"https://en.m.wikipedia.org/wiki/Tumor_lysis_syndrome"
],
[],
[
"https://en.wikipedia.org/wiki/Angiogenesis"
],
[],
[],
[]
] | ||
c07l4c | how much influence do large banks have on government laws, and why? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/c07l4c/eli5_how_much_influence_do_large_banks_have_on/ | {
"a_id": [
"er2jm34"
],
"score": [
4
],
"text": [
"Anyone with large amounts of money can have influence. You can't specifically say \"Vote for this law and I'll give you a bunch of money\" but you can make large contributions to the politicians campaign funds or let them know that after their p... | [] | [] | [
[]
] | ||
9nvdh3 | does the infrastructure difference between downtown and the suburbs change weather patterns in the area? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9nvdh3/eli5_does_the_infrastructure_difference_between/ | {
"a_id": [
"e7pbdlg"
],
"score": [
3
],
"text": [
"Absolutely. Alot of urban and downtown infrastructure generates alot of heat. NYC literally has underground steam pipes pumping hot steam around. Blacktop roads also contribute to heat patterns, and of course dense urban roads cause more contrib... | [] | [] | [
[]
] | ||
65ppg8 | Why is Cornwall considered a different cultural group than the English? And what historical roots does this division have? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/65ppg8/why_is_cornwall_considered_a_different_cultural/ | {
"a_id": [
"dgcbefo"
],
"score": [
75
],
"text": [
"Cornwall is viewed as one of the rare Celtic holdouts on the Atlantic fringe, resisting assimilation more or less successfully. In fact, it was late to be recognized by the International Celtic Congress because the Cornish language had sunk to a... | [] | [] | [
[]
] | ||
63ce90 | why do we have such a hard time quitting smal unnecessary habbits, like biting nails or cracking our knuckels? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/63ce90/eli5_why_do_we_have_such_a_hard_time_quitting/ | {
"a_id": [
"dft0ix6",
"dft0l4f"
],
"score": [
2,
2
],
"text": [
"their small so you tend not to notice yourself doing it most of the time and it's more of an impulse. ",
"Because we are creatures of habit.\n\nWhat this means is our brain attempts to give as much work to our subconscio... | [] | [] | [
[],
[]
] | ||
5ycy5f | "The claim that life expectancy in ancient times was only 30 is only true if you include infant mortality." How true is this statement? | So lately I have been seeing this pop up, and I'm curious about it, because I haven't actually seen any sources about this. Are life expectancy estimates based on records, skeletal remains or neither? And how do infant mortality, war casualties and death in childbirth get computed into this number? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5ycy5f/the_claim_that_life_expectancy_in_ancient_times/ | {
"a_id": [
"dep3jvi",
"depb9uq"
],
"score": [
3,
5
],
"text": [
"This would depend upon the records we have. It's a very tricky calculation. I'm only familiar with early modern and modern calculations, which rely on much better records. Generally speaking, infant mortality is going to ske... | [] | [] | [
[],
[]
] |
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