q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
value | subreddit stringclasses 3
values | url stringlengths 4 132 | answers dict | title_urls list | selftext_urls list | answers_urls list |
|---|---|---|---|---|---|---|---|---|---|
67edkk | The Confusing History of Bible Translations. Is there a definitive reference for this subject? | Novice here. This past weekend I was inspired to tackle a project I've always wanted to do, The History of Bible Translations.
This is a HUGE subject, so I limited myself to English-Protestant translations (save influential text). But... still... That is overwhelming.
I had no idea there was such confusing and con... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/67edkk/the_confusing_history_of_bible_translations_is/ | {
"a_id": [
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"text": [
"Hi, hopefully you'll get some help here, but do also consider x-posting to /r/AcademicBiblical for their input."
]
} | [] | [
"https://www.dropbox.com/s/3ejvk222f6460wt/Translation%20Timeline.png?dl=0"
] | [
[]
] | |
ziu64 | Was speed and violence of action during World War 2 a large contributing factor as to why it did not stabilize into nasty trench warfare like WWI? | In other words, how and what changed between WWI and WWII that made these two conflicts so different? Was it only weapons and tech, differently matched militaries, or fundamental change in the understanding of the conduction of warfare (strategies, tactics, etc.) in the commanders and officers? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/ziu64/was_speed_and_violence_of_action_during_world_war/ | {
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"text": [
"I believe it was the introduction of aircraft and tanks...",
"Mobile warfare of WW2 was inevitable. Multiple factors contributed to this. To name some:\n\n- Military thought ha... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Blitzkrieg"
],
[
"http://en.wikipedia.org/wiki/Stormtrooper"
],
[]
] | |
2p1ehn | why do some people hear noises prior to falling asleep. | This happens to me and I found out it happens to others too, I just can't find why. It doesn't happen right before falling asleep, but I use it as an indicator that lets me know I'll be asleep soon. The sounds range from random noises to voices, but they go away when I focus on them.
Edit: I realized I didn't put a q... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2p1ehn/eli5_why_do_some_people_hear_noises_prior_to/ | {
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"cmsg3tu",
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"text": [
"As I am falling asleep I usually loose my hearing and the realization of silence startles me and then two seconds later I am asleep.",
"It could be [hypnagogia](_URL_0_)\n\nAs you fall asleep, there... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Hypnagogia"
],
[
"http://en.wikipedia.org/wiki/Hypnagogia#Sounds"
]
] | |
307u31 | how am i supposed to analyze the double toilet flusher buttons? | As someone that has been flushing successfully for several decades, the new flush buttons confuse me.
Almost all new toilets have two buttons to flush the toilet. One is typically larger than the other. Is the larger one made that way to indicate it gives a larger flush? Or is it larger because it is supposed to d... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/307u31/eli5_how_am_i_supposed_to_analyze_the_double/ | {
"a_id": [
"cppxj8f",
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"score": [
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"text": [
"You don't have to analyze it, you can just take a few moments to Google \"[toilet button flush](_URL_1_).\"\n\nYou don't even have to search through the results, just select image results, and you'll get results like [this](... | [] | [] | [
[
"http://www.kudzu.com/blogs/hot-off-the-vine/wp-content/uploads/2011/01/dual-flush-toilet11.jpg",
"https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=toilet%20button%20flush",
"http://images.oyster.com/articles/661-2010-01-marriott-dual-flush-toilet.jpg"
],
[]... | |
ebyuxy | Is there a particular reason why there are few islands in the Arctic Ocean? | I was surprised that the most northerly island was just off the coast of Greenland. This seems quite a large area to have no islands at all, especially given that the Arctic Ocean is the shallowest ocean.
Is it related to plate tectonics? | askscience | https://www.reddit.com/r/askscience/comments/ebyuxy/is_there_a_particular_reason_why_there_are_few/ | {
"a_id": [
"fbbtp0r"
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"text": [
"The short answer is that it has to do with the way plate tectonics force continental basalt, which is the stuff that forms terrestrial topography like islands and continents, away from divergent boundaries in the ocean floor. Look at [this diagra... | [] | [] | [
[
"http://oceansjsu.com/images/north_pacific_names.jpg",
"https://upload.wikimedia.org/wikipedia/commons/0/02/Flood_Basalt_Map.jpg"
]
] | |
1jotka | how are the child/baby pictures of grown up actors in movies made? | Are they actual child/baby pictures of the actor/actress or of a look-alike or photoshoped or....? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1jotka/eli5how_are_the_childbaby_pictures_of_grown_up/ | {
"a_id": [
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"score": [
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"text": [
"All of the above. Whatever works, works. ",
"All of the above and make-up. Sometimes with hilarious results. \n\nIn Star Trek, they've shown how Wesley Crusher would look at 25. [Here's](_URL_0_) how he would look like a... | [] | [] | [
[],
[
"http://en.memory-alpha.org/wiki/Wesley_Crusher?file=Wesley_Crusher%252C_age_25.jpg",
"http://en.memory-alpha.org/wiki/Wil_Wheaton"
]
] | |
3vd5hb | How much of the uranium gets converted to energy in a nuclear bomb? | askscience | https://www.reddit.com/r/askscience/comments/3vd5hb/how_much_of_the_uranium_gets_converted_to_energy/ | {
"a_id": [
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"text": [
"I don't quite know enough to give you a complete answer...\n\n\"Uranium\" doesn't get converted to energy, precisely. If you calculate the mass of an atom and then calculate the mass of all the protons, neutrons, and electrons that make up the sa... | [] | [] | [
[]
] | ||
3jkz68 | source of streaming videos | When a TV show or movie is given permission to be streamed over an online service like Netflix, Hulu, Amazon Prime, etc., how is it uploaded to the site?
I'm sure with some of the newer TV shows/movies (~2010), they already have digital copies ready to go but what about older movies and shows? Are they burned from a D... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3jkz68/eli5_source_of_streaming_videos/ | {
"a_id": [
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"score": [
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"text": [
"Most all movies are cataloged digitally. For older vcr and film movies they use special converters"
]
} | [] | [] | [
[]
] | |
4kuoxo | Has there ever been a push to ban libraries by the book publishing industry? | It would seem that it would be in the interest of book publishers to push for the illegalization of libraries since it appears to harm book sales. After all, instead of purchasing every book I read, I can just go to the library and borrow the books from there. Has there ever been a push to ban libraries by the book pub... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4kuoxo/has_there_ever_been_a_push_to_ban_libraries_by/ | {
"a_id": [
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"text": [
"This answer applies to America only, because I am An American Librarian (™) and I only know the historical, professional, and legal situation for libraries here. The answer is kinda yes: publishers routinely oppose some of the work of librarian... | [] | [] | [
[
"http://imagesearchnew.library.illinois.edu/cdm/singleitem/collection/alaposters/id/34/rec/3",
"http://www.ala.org/transforminglibraries/frequently-asked-questions-e-books-us-libraries",
"http://www.ala.org/acrl/sites/ala.org.acrl/files/content/publications/booksanddigitalresources/digital/97808389869... | |
1n2miz | When was the last time there was a single world power? | Since the fall of the USSR, the US is generally regarded as the single world power (at least until China or the EU rise up.) When was the last time that was the case. Was the British Empire alone during its height, or was it rivaled by nations like France? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1n2miz/when_was_the_last_time_there_was_a_single_world/ | {
"a_id": [
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"text": [
"While the British Empire had it's rivals, it was by far the single global power in the latter half of the 19th century. When the term \"superpower\" was first described, it was used to describe not only the United States and USSR, but also the Br... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Regional_power",
"http://en.wikipedia.org/wiki/Great_power"
]
] | |
9lefh4 | why do some restaurants add an automatic gratuity for groups of a certain size even if the patrons ask for separate bills? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9lefh4/eli5_why_do_some_restaurants_add_an_automatic/ | {
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"text": [
"Because not everybody tips, simple as that. Make sure a tax is added so now everybody has “to tip” and no one is tipping more than the o... | [] | [] | [
[],
[],
[],
[],
[],
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] | ||
1a97kj | How many words does an average person memorize in their lifetime? | askscience | http://www.reddit.com/r/askscience/comments/1a97kj/how_many_words_does_an_average_person_memorize_in/ | {
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"text": [
"Unfortunately, I'm not able to find any journal articles that provide an accurate estimate.\n\nThe professor David Krystal [attempted to make an estimation](_URL_0_), although his methodology was flawe... | [] | [] | [
[
"http://www.davidcrystal.com/DC_articles/English83.pdf",
"http://www.victoria.ac.nz/lals/about/staff/publications/paul-nation/1990-Goulden-Voc-size.pdf",
"http://my.vocabularysize.com"
],
[
"http://en.wikipedia.org/wiki/Morpheme",
"http://en.wikipedia.org/wiki/Agglutination"
],
[
"... | ||
a7717x | Historical accuracy in popular media. Does it annoy you? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/a7717x/historical_accuracy_in_popular_media_does_it/ | {
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"text": [
"We have removed this question because it is an open-ended question that isn't suited to our normal q-and-a format and rules. But we encourage you to post your question again in our Free-Form Friday thread."
]
} | [] | [] | [
[]
] | ||
afchpw | how do wetsuits/diving suits keep your body warm? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/afchpw/eli5_how_do_wetsuitsdiving_suits_keep_your_body/ | {
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"text": [
"A wet suit traps a pool of water between you and the ocean. Your own body heat warms that water. The thickness of the neoprene insulated that inner layer of water from ocean. \n\nEdit there are also dry suits, which keep you from getting wet in t... | [] | [] | [
[]
] | ||
19nqcr | What quickens the drying of blood when compared to water? | How does the process occur so quickly in comparison to water?
Is there a medical name for blood once it solidifies? | askscience | http://www.reddit.com/r/askscience/comments/19nqcr/what_quickens_the_drying_of_blood_when_compared/ | {
"a_id": [
"c8pq7gs"
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"text": [
"Blood is composed of red and white blood cells, platelets and plasma, which itself is composed of mostly water and dissolved nutrients. What you call the \"drying\" of blood is not the same process as water \"drying\", water will dry through evap... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Blood_coagulation"
]
] | |
5q9hr3 | what does a misspelled word or bad grammar look like in chinese? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5q9hr3/eli5what_does_a_misspelled_word_or_bad_grammar/ | {
"a_id": [
"dcxfhp1",
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"dcxms83",
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"d... | [] | [] | [
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"https://drive.google.com/file/d/0B2-o7YKqF-DELUw2Y1U4RXNrTUk/view?usp=drivesdk",
"https://d2mllj54g854r4.cloudfront.net/images/type_chinese/win8/usage2.png"
],
[
"http://news.mydrivers.com/1/471/471490.htm"
],
[
"http://i.imgur.com/eEaQzI1.j... | ||
9uedoa | The United States was founded, populated and developed by people who were not originally from America. How did anti-immigration sentiment arise from a literal nation of immigrants? How did the idea of America as a melting pot of different cultures develop in spite anti-immigrant sentiment? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9uedoa/the_united_states_was_founded_populated_and/ | {
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"text": [
"Follow-up question: at the time of the American Revolution, was there a social distinction between *recent* immigrants to the colonies compared to t... | [] | [] | [
[],
[
"https://www.smithsonianmag.com/smithsonian-institution/election-1800-first-real-test-american-democracy-180960457/",
"http://www.jstor.org/stable/25699042",
"www.jstor.org/stable/25699042",
"https://founders.archives.gov/documents/Hamilton/01-25-02-0282",
"Smithsonian.com"
],
[
... | ||
260pdc | web 3.0? | I saw something about Web 2.0 just now (I know what Web 1.0 and 2.0 are, you don't need to explain that to me) and it got me wondering about a Web 3.0. What would actually change? Moving from 1.0 to 2.0 we changed from static to interactive, so what's next? A couple of sites I found gave examples of asking complex ques... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/260pdc/eli5_web_30/ | {
"a_id": [
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],
"score": [
2
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"text": [
"Web 2.0 was just a catchphrase that some journalist came up with. It's just a vague, handwavey term that can be used to talk about whatever a speaker wants. Nobody spoke of \"Web 1.0\" prior to it becoming widely used.\n\nI hope we can avoid usin... | [] | [] | [
[]
] | |
9is0p4 | why does mostly the top of our feet hurt when our feet land on something hard? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9is0p4/eli5_why_does_mostly_the_top_of_our_feet_hurt/ | {
"a_id": [
"e6lwllt"
],
"score": [
3
],
"text": [
"If you look at a human skeleton, you will see that there are long bones at the top of our feet. Those are called metatarsal bones. The force of the impact of landing hard on your feet will travel through those bones, which is painful."
]
} | [] | [] | [
[]
] | ||
28b01y | what's the difference between the different types of anti-aliasing? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/28b01y/eli5_whats_the_difference_between_the_different/ | {
"a_id": [
"ci9ogiv"
],
"score": [
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],
"text": [
"There's different methods involved to get rid of the jaggies with varying levels of effectiveness and performance penalties.\n\nThe most brute force one being super sampling. The image is rendered much higher than the target resolution and then s... | [] | [] | [
[]
] | ||
5ha6ew | what do people mean when they say that all birds are dinosaurs? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5ha6ew/eli5_what_do_people_mean_when_they_say_that_all/ | {
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"text": [
"Dinosaurs most likely evolved into modern day birds. As an attempt to evade the auto mod I will explain why we think that. It mainly com... | [] | [] | [
[],
[],
[],
[],
[
"http://www.berkeley.edu/news/media/releases/2005/06/images/revuelto_tree_big.jpg",
"https://image.freepik.com/free-vector/family-tree-icons_23-2147511229.jpg",
"https://en.wikipedia.org/wiki/Primate",
"http://www.nature.com/nrg/journal/v15/n5/fig_tab/nrg3707_F1.html"
],
... | ||
3y6bmo | Is there any connection between Cossaks and Kazakhs? Or is the name similarity just a coincidence? | Been wondering about this for a while. Wikipedia doesn't say much, just don't confuse them with each other. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3y6bmo/is_there_any_connection_between_cossaks_and/ | {
"a_id": [
"cyaz5bg",
"cyazfc4"
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"score": [
276,
568
],
"text": [
"Today's Cossacks are descended from bands of escaped and freed serfs from across Russia. They generally existed near the borders of the Russian Empire, such as in Ukraine. They were afforded special privileges by the Rus... | [] | [] | [
[],
[]
] | |
1z0bkk | why china has both an overcrowding/pollution problem and ghost towns. | I've seen a lot about China's pollution issues recently (and its highly probable link to overpopulation). But I also see random articles on these "ghost" towns where either they've been built in anticipation of people moving in or were abandoned after some market went under. Moving successful businesses (and therefore ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1z0bkk/eli5_why_china_has_both_an_overcrowdingpollution/ | {
"a_id": [
"cfpc9k4",
"cfpcpss",
"cfpmif1"
],
"score": [
5,
7,
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],
"text": [
"The ghost towns are largely a myth.\n\n_URL_0_",
"The non-myth ghost towns are in the middle of nowhere and usually lack essential services. Nobody wants to move to a city with no grocery stores, no... | [] | [] | [
[
"http://blogs.wsj.com/chinarealtime/2013/09/24/chinas-ghost-cities-may-not-be-so-spooky/"
],
[],
[
"http://www.thechinabeat.org/?p=3610"
]
] | |
2bxo1d | How does a virus like Ebola lay dormant of long periods of time and then reappear again? | askscience | http://www.reddit.com/r/askscience/comments/2bxo1d/how_does_a_virus_like_ebola_lay_dormant_of_long/ | {
"a_id": [
"cja04zr",
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"score": [
34,
6,
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],
"text": [
"I don't believe that the Ebola virus is thought to have a latent state, as some viruses do (herpes and HIV). Instead, there is the appearance of occasional outbreaks in populations which could give t... | [] | [] | [
[],
[],
[]
] | ||
9gg67k | What happened to Liberia during the American Civil War? | I know that Liberia was founded by free former slaves getting sent to Africa, but am unaware of how the colony developed afterwards. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9gg67k/what_happened_to_liberia_during_the_american/ | {
"a_id": [
"e64xcic"
],
"score": [
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],
"text": [
"I'll sketch the history of Liberia to 1860 out; the idea of resettling freed American slaves in Africa had its seed in the 1787 establishment of the British colony at Freetown, in what is now Sierra Leone. In 1817, the American Colonization Socie... | [] | [] | [
[
"https://upload.wikimedia.org/wikipedia/commons/d/df/Map_of_Liberian_Republic_1856.jpg"
]
] | |
2z9z96 | Is it possible to harness the gamma radiation from nuclear reactions in the same way we harness solar radiation using solar panels? | askscience | http://www.reddit.com/r/askscience/comments/2z9z96/is_it_possible_to_harness_the_gamma_radiation/ | {
"a_id": [
"cphamen"
],
"score": [
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"text": [
"From: _URL_0_\n\n > Spent fuels and high level radioactive wastes which emit high doze of gamma rays could be a promising and long-lasting power source, if the gamma ray energy was effectively converted other forms of energy. In the present study... | [] | [] | [
[
"http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=7956582"
]
] | ||
3v3r4p | why does rubbing your finger across your lips make them softer? | seriously have no idea, but it works! | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3v3r4p/eli5_why_does_rubbing_your_finger_across_your/ | {
"a_id": [
"cxk393o",
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"score": [
3,
3,
2
],
"text": [
"Anyone else try rubbing their lips with their finger after reading the title?",
"Your lips require oil or else they get chapped. Your fingers have oil on them, and some of it comes off onto your li... | [] | [] | [
[],
[],
[]
] | |
6k7xdh | Why must we use radians (and not degrees) in calculus? | askscience | https://www.reddit.com/r/askscience/comments/6k7xdh/why_must_we_use_radians_and_not_degrees_in/ | {
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"score": [
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27,
32,
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],
"text": [
"You don't have to. Radians and degrees are different units for the same thing, just like inches vs centimeters.\n\nBut since everyone else uses radians, and all the formulas are... | [] | [] | [
[],
[],
[
"https://upload.wikimedia.org/wikipedia/commons/4/4e/Circle_radians.gif"
],
[]
] | ||
4en0jy | why do video game discs have loading screens but nintendo cartridges don't? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4en0jy/eli5_why_do_video_game_discs_have_loading_screens/ | {
"a_id": [
"d21iblz",
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"score": [
3,
9
],
"text": [
"Nintendo (or really any) cartridges never take more than a few seconds to load so there is no need for a loading screen.",
"Video game cartridges are like the solid state drives (SSDs) of the past. They had much faster d... | [] | [] | [
[],
[]
] | ||
3l2vjg | rfid protection | How does RFID protection technology work? Is it just a coating that prevents a reading or is there more to it?
Background: I have an [RFID protection wallet](_URL_0_) that I put my student ID card in. If i put it in the outside id window, it CAN'T be read by the sensors however if i put it in the inside id window, it ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3l2vjg/eli5rfid_protection/ | {
"a_id": [
"cv2od0d"
],
"score": [
2
],
"text": [
"At a high level, the wallets that offer RFID protection are very small [Faraday cages](_URL_0_) which block all EM radiation from coming in or going out.\n\nThe ID window is a hole in the cage, which allows the RFID signal to pass through."
]
} | [] | [
"http://ep.yimg.com/ay/yhst-88464523396784/tumi-delta-rfid-multi-window-card-case-8.gif"
] | [
[
"https://en.wikipedia.org/wiki/Faraday_cage"
]
] | |
epejuu | how do drug companies decide what the dosage should be for different over the counter medication? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/epejuu/eli5_how_do_drug_companies_decide_what_the_dosage/ | {
"a_id": [
"feiyg17"
],
"score": [
6
],
"text": [
"Extensive testing, through a bunch of different phases, starting with animals and, when it’s deemed safe enough and worth the effort to move into the market, on humans"
]
} | [] | [] | [
[]
] | ||
2jo63v | why is it that we don't know much about ancient civilizations? shouldn't the information get passed across generations? | We don't know much about ancient Egypt for example. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2jo63v/eli5_why_is_it_that_we_dont_know_much_about/ | {
"a_id": [
"cldikvh",
"cldiqtk",
"cldjq00",
"cldlqc8"
],
"score": [
6,
3,
4,
2
],
"text": [
"But if Civilization gets slaughtered or decimated by illness who are they going to tell their history? Our knowledge of history is based mainly on documents. If we don't have them... | [] | [] | [
[],
[],
[],
[]
] | |
embl1g | British naval doctrine | May be too simple a question for this sub, but it’s bugging me. I remember reading or hearing about a British doctrine in which the Royal Navy was expected to be more powerful than the next two navies. What’s the doctrine called or did I make it up? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/embl1g/british_naval_doctrine/ | {
"a_id": [
"fdnipvl",
"fdnmr4x"
],
"score": [
2,
12
],
"text": [
"I'm at work at the moment so I don't have my books to hand so hopefully this doesn't get removed.\n\nI actually wrote my dissertation on this! Or at least the naval arms race prior to WW1 and the development of Dreadnought ... | [] | [] | [
[],
[]
] | |
30334n | "Great Game" narratives usually describe a British Empire deeply anxious about Russian expansion into Asia. How much was the opposite also true? | I was just reading Hevia's *The Imperial Security State*, and when he discusses the Great Game, it becomes clear that British imperialists were indeed very much concerned with Russian expansionism. Given that Great Britian was similarly a highly aggressive expanding power in Asia at this time, did similar anxieties exi... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/30334n/great_game_narratives_usually_describe_a_british/ | {
"a_id": [
"cpoxidp"
],
"score": [
6
],
"text": [
"can i tack on a book request for overviews of \"the great game\"?"
]
} | [] | [] | [
[]
] | |
bh2k4z | what makes some glass surfaces reflective while others are transparent? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bh2k4z/eli5_what_makes_some_glass_surfaces_reflective/ | {
"a_id": [
"elphhif"
],
"score": [
2
],
"text": [
"Light. If an object behind glass repels photons, it reflects. If it doesnt, it appears transparent as the photons continue passed it. That's how mirrors work."
]
} | [] | [] | [
[]
] | ||
3y51yf | what causes that "old" metallic-like smell in antique typewriters/cameras/sewing machines? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3y51yf/eli5_what_causes_that_old_metalliclike_smell_in/ | {
"a_id": [
"cyaloi7"
],
"score": [
8
],
"text": [
"It's actually a kind of body odor. When you touch the metal, it catalyzes the decomposition of oils on your skin and makes smaller, more volatile compounds that make up the \"metal smell.\""
]
} | [] | [] | [
[]
] | ||
7th592 | Origin of the honorable Wehrmacht reputation | It's been known since during the war itself that the German heer (armed forces) were involved in atrocities, not just the SS, so how did we in the West get the notion that their hands were relatively "clean?" Did it develop more or less organically since there were a relative handful of atrocities in the West as compar... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7th592/origin_of_the_honorable_wehrmacht_reputation/ | {
"a_id": [
"dtcix4k"
],
"score": [
3
],
"text": [
"While there be more to add, I think this answer to an older question by u/commiespaceinvader may be what you are looking for. \n_URL_0_"
]
} | [] | [] | [
[
"reddit.com/r/AskHistorians/comments/5799li/did_the_rommel_myth_and_clean_wehrmacht_myth_and/d8suoyk/"
]
] | |
9gsjo2 | What can we use bronze for today and why? | I was wondering what we use bronze for today and the reason for it. I cant seem to find a reason for using bronze in industrial and non-industrial purposes. | askscience | https://www.reddit.com/r/askscience/comments/9gsjo2/what_can_we_use_bronze_for_today_and_why/ | {
"a_id": [
"e66nrm7",
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"e67oavq",
"e67oc49",
"e67oufp",
"e67s32c",
"e67tiky",
"e67vx8p",
"e... | [] | [] | [
[],
[],
[
"https://en.m.wikipedia.org/wiki/Bell_metal"
],
[],
[],
[],
[],
[
"https://en.m.wikipedia.org/wiki/Antimicrobial_copper-alloy_touch_surfaces"
],
[],
[],
[],
[],
[],
[],
[],
[],
[],
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[],
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[],
[],
[]
] | |
9atznv | what happens in your skin when you get calluses. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9atznv/eli5_what_happens_in_your_skin_when_you_get/ | {
"a_id": [
"e4y5r7b",
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"e4yn0r0",
"e4z4ooh",
"e4z9oka"
],
"score": [
446,
109,
2,
4,
3
],
"text": [
"Your skin gets tired of repairing the damage, so it over-does the repair operation - thickening the outer protective layer.",
"Podiatrist here. Thicke... | [] | [] | [
[],
[
"https://en.m.wikipedia.org/wiki/Callus"
],
[],
[],
[]
] | ||
h4f5v | Fairly inane question about microwaves (the cooking kind) | Hi clever people,
Me and dad were having a lazy night and were going to microwave these curry dishes we'd bought (they were lovely) The instructions claimed that each took 5 minutes to cook. My dad said that if we wanted to cook them at the same time we had to double it as there was twice as much. Surely this isn't ... | askscience | http://www.reddit.com/r/askscience/comments/h4f5v/fairly_inane_question_about_microwaves_the/ | {
"a_id": [
"c1si9v5",
"c1skf9y"
],
"score": [
7,
2
],
"text": [
"Non-scientist here, but I'll try to answer your question.\n\nYes, your father is right. For different amounts of food, cooking times varies. This has to do with the way microwaves work.\n\nWhen cooking in a regular oven, the... | [] | [] | [
[],
[]
] | |
2gebi7 | i get told beer is bad because it is all carbs and soda is bad because it is all sugar. which one is worse on my gut and why? | What am i supposed to drink? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2gebi7/eli5i_get_told_beer_is_bad_because_it_is_all/ | {
"a_id": [
"ckia518",
"ckiaeds",
"ckibr66",
"ckiiuzk"
],
"score": [
17,
2,
2,
2
],
"text": [
"Water. You're supposed to drink water",
"sugar is a form of carbohydrate. The amount of carbs in beer differs greatly depending on the type, same as the amount of sugar in so... | [] | [] | [
[],
[],
[],
[]
] | |
mfp3j | selling short in stocks, mutual funds, and margins | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/mfp3j/eli5_selling_short_in_stocks_mutual_funds_and/ | {
"a_id": [
"c30j4q5",
"c30j4q5"
],
"score": [
21,
21
],
"text": [
"**Short selling: **\n\nYou have 100 stocks in a company that you plan on keeping regardless of what happens to its price. Lets say they're worth 100$ a piece. Now I think that the price is going to take a shit-kicking. So ... | [] | [] | [
[],
[]
] | ||
1rl88r | why does the pitch of an emergency siren change when it has gone past you? | I wonder why the pitch of a siren changes when it is going past you at a fast speed. It sounds different when it is moving at you and when it is moving away from you. As an example Swedish siren: _URL_0_
Is there any physical explanation to this? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1rl88r/eli5_why_does_the_pitch_of_an_emergency_siren/ | {
"a_id": [
"cdoccos",
"cdoehyz",
"cdoelqv"
],
"score": [
11,
2,
5
],
"text": [
"The sound waves bunch up ahead of the vehicle, making out sound higher, and as it passes you, they spread out behind out, lowering the frequency. Google \"Doppler effect\"",
"[The Doppler Effect](_... | [] | [
"http://www.youtube.com/watch?v=ALnMzTC-144"
] | [
[],
[
"http://www.sheldonquotes.com/uploads/Doppler.gif"
],
[]
] | |
3jqo3b | why do we clinch our teeth while applying force? | Whenever we open a box lid which is very tight or push something heavy (like a car), we tend to clinch our teeth.
Was curious why this happens. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3jqo3b/eli5_why_do_we_clinch_our_teeth_while_applying/ | {
"a_id": [
"curmr77"
],
"score": [
11
],
"text": [
"Imagine force as pressure, like the pressure of soda in a bottle. We feel the pressure because the soda is pushing against the walls of the bottle. If the cap is off the bottle, there is no pressure: the walls of the bottle are squishable. When... | [] | [] | [
[]
] | |
2ewz96 | How did people on the dole pass their days in ancient Rome? | I am presuming this would be someone living in Rome at its height (e.g., 2/3rd century AD) who got the full ration of bread, olive oil, etc. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2ewz96/how_did_people_on_the_dole_pass_their_days_in/ | {
"a_id": [
"ck421pl"
],
"score": [
7
],
"text": [
"The Roman grain dole was not really a \"poor relief\"--[this paper](_URL_0_) does a really good job covering the basics. Furthermore, I don't believe that the dole would be able to cover the full subsistence of a family. So, that said, they would... | [] | [] | [
[
"www.jstor.org/stable/20181081"
]
] | |
3rnz3m | nasa's latest announcement about mars' atmosphere | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3rnz3m/eli5_nasas_latest_announcement_about_mars/ | {
"a_id": [
"cwpqokd",
"cwprgfm",
"cwpuzcs"
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"score": [
2,
27,
5
],
"text": [
"Mars' Atmosphere is being stripped from a tiny fraction of its' Gas every second (about 100g/seconds globally on rough estimates) due to Solar Winds. \n\nI just tuned into the Livestream myself, if you... | [] | [] | [
[],
[],
[]
] | ||
3wolok | What did economics classes look like in communist countries, particularly in the USSR? | So, I'm an economics student and after reading some of Marx's writings, I realized how much the economics curriculum here in the US is heavily reliant on the capitalist system of economics (profit maximization, private property, etc) and it got me thinking about how different a Marxist economics course would look like... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3wolok/what_did_economics_classes_look_like_in_communist/ | {
"a_id": [
"d119bmz",
"cxxxh7a",
"cxym77r"
],
"score": [
2,
805,
54
],
"text": [
"\"So, what would an economics student in a communist country, say in the Soviet Union, learn and what would be something that we'd learn in common and somethings that would be different?\"\n\n\nThey ... | [] | [] | [
[],
[
"https://www.gwu.edu/~ieresgwu/assets/docs/demokratizatsiya%20archive/03-4_BrueMacPhee.PDF"
],
[
"https://www.reddit.com/r/AskHistorians/comments/15zq4y/a_russianspeakerstalinist_sovietperiod_person/"
]
] | |
arah03 | What makes the whirl pool in a sink? | [deleted] | askscience | https://www.reddit.com/r/askscience/comments/arah03/what_makes_the_whirl_pool_in_a_sink/ | {
"a_id": [
"egogbce"
],
"score": [
4
],
"text": [
"If you fill up your sink with the drain plugged, the water will be moving around in a more or less random way. This random motion most likely has some nonzero angular momentum about the drain. When you pull the plug, water rushes down the drain, ... | [] | [] | [
[]
] | |
1zrnjk | why do restaurants offer and promote "healthy options" and then give you a tiny water glass? | So one of the easiest and Healthiest decisions I have made lately is totally ditching sugary drinks in exchange for water. Now this is lovely but a ton of restaurants (specifically fast food places) offer a tiny water glass. Is there a reason for this? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1zrnjk/eli5_why_do_restaurants_offer_and_promote_healthy/ | {
"a_id": [
"cfwaz7g",
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],
"score": [
2,
2
],
"text": [
"The most expensive part of a fountain drink is the cup itself so many fast food restaurants is to hand out the cheapest container they have. ",
"For most restaurants, it's because it doesn't make money. Not only do they ... | [] | [] | [
[],
[]
] | |
285uvn | In the Multiple-Universe Theory, how would some universes that have different laws of Physics look compared to our universe's laws? | askscience | http://www.reddit.com/r/askscience/comments/285uvn/in_the_multipleuniverse_theory_how_would_some/ | {
"a_id": [
"ci7pvnc"
],
"score": [
2
],
"text": [
"A pretty simple example would be different values for the fundamental forces. Say for example there existed a universe where the gravitational force was many magnitudes weaker than our own universe. Perhaps no stars or planets of galaxies would e... | [] | [] | [
[]
] | ||
6yligy | why was the recent eclipse scientifically important? | I read online that scientists went crazy during the day of the eclipse to get some important data on the corona or whatever. That I get. What I *don't* get is why is it important that the moon block the sun? Why can't we just put a vantablack circle in front of a telescope and have an eclipse 24/7?
TL;DR: Why can't we... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6yligy/eli5_why_was_the_recent_eclipse_scientifically/ | {
"a_id": [
"dmoazw0",
"dmob5jp"
],
"score": [
3,
3
],
"text": [
"The result would not be the same. The sun's light is being blocked from outside the atmosphere. There is only one way to do that, that being with a celestial body with the same apparent diameter. It's also remarkable because... | [] | [] | [
[],
[]
] | |
1c2qfc | What is it about Malaria that is making a vaccine so difficult to complete? | In my understanding, Malaria is an extremely treatable disease, but due to inability for developing countries to have a consistent supply of medicine for it, it can kill a lot of people. Is there a reason more work has not been put into creating a vaccine? Is it merely a money/politics problem, or is the medicinal di... | askscience | http://www.reddit.com/r/askscience/comments/1c2qfc/what_is_it_about_malaria_that_is_making_a_vaccine/ | {
"a_id": [
"c9cibco",
"c9cjpef"
],
"score": [
6,
6
],
"text": [
"Money is an issue. However Plasmodium falciparum, the parasite that cause malaria is very good at evading the immune system. Traditional vaccines \"teach\" the immune system to recognize and attack pathogens it has never see... | [] | [] | [
[],
[]
] | |
4e77et | What was the first example of a major/widely recognized brand? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4e77et/what_was_the_first_example_of_a_majorwidely/ | {
"a_id": [
"d1xsir7"
],
"score": [
4
],
"text": [
"In the 16th century Albrecht Dürer, one of *the* most celebrated artists of his time, marked his prints with a specifically designed logo of his initials. The logo quickly became internationally synonymous with his name (Dürer was one of the firs... | [] | [] | [
[
"http://www.bbc.co.uk/programmes/b04k6scv",
"http://www.phaidon.com/resource/albrechtdurerlogo.jpg",
"https://upload.wikimedia.org/wikipedia/commons/a/a1/Albrecht_Dürer_-_Young_Hare_-_WGA07362.jpg"
]
] | ||
4zwjac | if you flew a spacecraft into a gas planet, would you go straight through it or would you hit some form of ground? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4zwjac/eli5_if_you_flew_a_spacecraft_into_a_gas_planet/ | {
"a_id": [
"d6zf9y6",
"d6zfirm",
"d6zge0k"
],
"score": [
2,
3,
3
],
"text": [
"Your be crushed by the gravity of the planet long before you reached the center let alone got to the other side.",
"It's believed that most, if not all, gas giants have solid cores. However, the pre... | [] | [] | [
[],
[],
[
"http://stateschronicle.com/hydrogen-fifth-state-of-matter-phase-v-16033.html"
]
] | ||
2uibnw | Why can't we create artificial eyes? We're very good at optics and signalprocessing. Where is the complexity in making a "camera" and connecting it to the optic nerve? | askscience | http://www.reddit.com/r/askscience/comments/2uibnw/why_cant_we_create_artificial_eyes_were_very_good/ | {
"a_id": [
"co8y1rd",
"co9kn4w"
],
"score": [
8,
2
],
"text": [
"The optic nerve is a bundle of neuron axons - the *bodies* of those neurons are the [retinal ganglion cells] (_URL_1_), which are spread out in a sheet across the inner surface of the retina. So a bionic eye needs to make co... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Retinal_implant#Types_of_Retinal_Implants",
"http://en.wikipedia.org/wiki/Retinal_ganglion_cell"
],
[]
] | ||
ntmm1 | Why are solar panels typically blue and shiny? | It seems counter-intuitive. In my mind they should be matt, black to absorb as much sunlight as possible. | askscience | http://www.reddit.com/r/askscience/comments/ntmm1/why_are_solar_panels_typically_blue_and_shiny/ | {
"a_id": [
"c3buz0l",
"c3buz0l"
],
"score": [
10,
10
],
"text": [
"This is because silicon is best at absorbing light in the redder end of the spectrum, including infrared. Smaller wavelengths, on the blue end of the visible spectrum, are reflected more. So when the sunlight hits the sola... | [] | [] | [
[
"http://www.spectrolab.com/solarcells.htm",
"http://pveducation.org/pvcdrom/appendicies/optical-properties-of-silicon"
],
[
"http://www.spectrolab.com/solarcells.htm",
"http://pveducation.org/pvcdrom/appendicies/optical-properties-of-silicon"
]
] | |
1elerk | What Gives Brass That Distinctive Smell? | I recently got an old Nikon SLR camera from my dad. As I was cleaning it I noticed the pungent, sweet odor that antique brass tends to have, especially after years of being stored in stagnant air.
I've always assumed that's just what brass smells like. But then I started think: what am I actually smelling? Are Zinc an... | askscience | http://www.reddit.com/r/askscience/comments/1elerk/what_gives_brass_that_distinctive_smell/ | {
"a_id": [
"ca1fdoo",
"ca1jl6c"
],
"score": [
11,
4
],
"text": [
"Not exactly your question, but people are able to smell iron after touching it with a finger, according to [this ScienceDaily article](_URL_0_). Perspiration on the skin reduces the metal into Fe^2+ ions. The Fe^2+ ions dec... | [] | [] | [
[
"http://www.sciencedaily.com/releases/2006/10/061018150716.htm"
],
[]
] | |
2vwmyl | how does old and worn money get out of the circulation? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2vwmyl/eli5_how_does_old_and_worn_money_get_out_of_the/ | {
"a_id": [
"colizsj",
"colkmo0"
],
"score": [
4,
2
],
"text": [
"One thing that banks do is when they see a bill that's getting too worn out is they send it back to the treasury department and get a replacement. The treasury department destroys them.",
"Banks don't keep the cash that... | [] | [] | [
[],
[]
] | ||
be64sl | why do large scale fires take so long to be put out? | I'm thinking more in terms of localized fires like the Notre Dame one rather than a forest/bush fire. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/be64sl/eli5_why_do_large_scale_fires_take_so_long_to_be/ | {
"a_id": [
"el3b30n",
"el3dv74"
],
"score": [
7,
3
],
"text": [
"Thats happens because of how the fire works. In order for fire to burn, you need fuel, heat, and oxygen. Now, its not enough to just locally remove oxygen or energy for a moment. You need an orchestrated effort to keep sit... | [] | [] | [
[],
[]
] | |
2zmfpa | i'm making hot dogs in the microwave. the packaging says "1 hot dog is 30 sec but 2 or more are a minute and 10 sec" why do i have to increase time when making more than one? won't they cook the same for the time of 1 hot dog? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2zmfpa/eli5_im_making_hot_dogs_in_the_microwave_the/ | {
"a_id": [
"cpk97h3",
"cpk9rtp"
],
"score": [
2,
3
],
"text": [
"The waves have to go through more matter to do their thing. So you increase the time of exposure to the waves to compensate.",
"Your microwave oven outputs microwaves (pretty self-explanatory), for regular cooking (not d... | [] | [] | [
[],
[]
] | ||
336tpy | How do fish and other marine vertebrates prevent their digestive fluids from flowing out of their mouth? | Do they have a sphincter in their throat or esophagus? Do they just produce more acids and enzymes and expect a little to leak out?
And how the mechanism different for marine mammals and reptiles? | askscience | http://www.reddit.com/r/askscience/comments/336tpy/how_do_fish_and_other_marine_vertebrates_prevent/ | {
"a_id": [
"cqir4nl"
],
"score": [
2
],
"text": [
"Many fish do not have stomachs. An example that comes to mind are seahorses, which must eat small amounts very often because of this. \n\nHowever, for the fish that do have stomachs, which is admittedly the majority, they have a sphincter at the ... | [] | [] | [
[]
] | |
2x9ken | how exactly does one "evade" taxes? kinda curious how ~100 billion euros could be missed. (assuming story truth) | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2x9ken/eli5_how_exactly_does_one_evade_taxes_kinda/ | {
"a_id": [
"coy4400",
"coy4tb1",
"coy8o3l"
],
"score": [
5,
4,
2
],
"text": [
"When you work at a company, they keep track of how much you are being paid, and then tell the tax authority that number - so when you file your taxes, the number you say you earned had better match the ... | [] | [] | [
[],
[],
[]
] | ||
9owmmj | Was Mozart wealthy during his own lifetime? Would he have had riches comparable to today's celebrated musicians and what kind of lifestyle do we know Mozart had? Was it extravagant? Starving artist? Or somewhere inbetween? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9owmmj/was_mozart_wealthy_during_his_own_lifetime_would/ | {
"a_id": [
"e7xr6rw",
"e7xr9la"
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"score": [
4,
12
],
"text": [
"Also, weren't artists sponsored by the King or something? How would one go about it? Create something, go to the castle, show it to the King and ask him for a pension? ",
"Mozart made a lot of money, and lived a somewha... | [] | [] | [
[],
[
"https://www.reddit.com/r/AskHistorians/comments/65uebo/why_was_mozart_so_financially_unsuccessful_in_his/dgdiior/?context=3"
]
] | ||
3i3yfl | How did the 30years war influence trade (routes)? | I know this is a big question, but I wonder if the widespread and unprecedented destruction on a large scale of those lands in the centre of Europe, through which many important and long-established trade routes went, had equally large effects on the european trade and trade networks. For example I know the Hanseatic c... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3i3yfl/how_did_the_30years_war_influence_trade_routes/ | {
"a_id": [
"cud49ub"
],
"score": [
3
],
"text": [
"There was a commercial crisis extending from central to north-western Europe as early as 1620, during the conflict's initial Bohemian phase, though the slowing of silver shipments from the New World may also have contributed. Without questioning ... | [] | [] | [
[
"http://eh.net/eha/wp-content/uploads/2013/11/SchulzeVolckart.pdf"
]
] | |
4hzwq6 | How did dogs become man's best friend in western culture? | As my understanding dogs have a unusual position in western society (I'm asian). I've read somewhere that dog only become "man's best friend" culturally in the 19th century. During that period people start breeding pet dogs and sell them like products so the merchants come up with this "man's best friend" idea. Is it t... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4hzwq6/how_did_dogs_become_mans_best_friend_in_western/ | {
"a_id": [
"d2ugkc7"
],
"score": [
7
],
"text": [
"“Man’s best friend” is a colloquialism, so it sort of depends on what you mean and how seriously you take it. In a very real sense, dogs have been man’s “best friend” since their domestication, about 30,000 years ago. There are arguments that hun... | [] | [] | [
[
"http://img.prntscr.com/img?url=http://i.imgur.com/jGrPEch.png",
"http://www.nature.com/ncomms/journal/v4/n5/full/ncomms2814.html"
]
] | |
7hqn1l | Why do presidents have the power to pardon? What were the founding fathers arguments for giving this power vs not? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7hqn1l/why_do_presidents_have_the_power_to_pardon_what/ | {
"a_id": [
"dqt3fgn",
"dqtlnco",
"dque761"
],
"score": [
1270,
57,
6
],
"text": [
"It is effectively a check on the judiciary branch in practice, and a means by which the framers sought to allow the government to show mercy. \n\nThat said, this was a controversial inclusion into t... | [] | [] | [
[],
[],
[
"https://www.reddit.com/r/politics/comments/6ww93c/judge_wont_vacate_former_sheriff_joe_arpaios/dmbafgj/"
]
] | ||
1y2wff | how do people get caught for illegal downloads and prosecuted? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1y2wff/eli5_how_do_people_get_caught_for_illegal/ | {
"a_id": [
"cfgv805",
"cfgxa6x",
"cfgyefe",
"cfh4jqg",
"cfh8hkm"
],
"score": [
16,
3,
3,
2,
2
],
"text": [
"The overwhelming majority of people do not get caught. Piracy is treated in a similar manner to drug dealing. They let the little guys operate and go after t... | [] | [] | [
[
"https://torrentfreak.com/five-undercover-police-cars-sent-to-arrest-single-alleged-movie-pirate-130525/"
],
[],
[],
[],
[]
] | ||
x43sx | Could an instrument be played in space? | I am wondering what would actually happen (if at all really possible) if you were to play a stringed instrument, or a drum set, etc. in space/zero gravity zone. | askscience | http://www.reddit.com/r/askscience/comments/x43sx/could_an_instrument_be_played_in_space/ | {
"a_id": [
"c5j29jj",
"c5j2g89",
"c5j2kqt"
],
"score": [
3,
2,
2
],
"text": [
"Yes, but what would be the medium for sound? A taut string or drum surface will vibrate when tapped, stroked or hammered, but to transmit sound takes a medium such as an atmosphere or fluid through whi... | [] | [] | [
[],
[],
[]
] | |
529lyr | what laws in europen union is uniform throughout? what kind of laws can vary between the member countries? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/529lyr/eli5_what_laws_in_europen_union_is_uniform/ | {
"a_id": [
"d7ip677"
],
"score": [
3
],
"text": [
"There are EU directives, decisions and EU regulations\n\nDirectives aim to achieve a specific outcome but it's up to the member state how to implement it\n\nRegulations are binding laws throughout every Member State and enter into force on a set... | [] | [] | [
[
"http://www.usda-eu.org/eu-basics-questions/difference-between-a-regulation-directive-and-decision/"
]
] | ||
amzpo4 | if anything is moving away with constant speed from each other, why distant objects appear faster? | Edit : I'm talking about the expansion of the universe. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/amzpo4/eli5_if_anything_is_moving_away_with_constant/ | {
"a_id": [
"efpqbgi",
"efpqzlc"
],
"score": [
4,
3
],
"text": [
"In what context does that happen? \n\nIf you stand and look at moving objects the closer they are the faster they appear because the angular size changes faster. Angular size there size in your field of view. \n\nThe size of... | [] | [] | [
[],
[]
] | |
247n8h | cherenkov effect: how can something travel faster than the speed of light? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/247n8h/eli5cherenkov_effect_how_can_something_travel/ | {
"a_id": [
"ch4dpqj",
"ch4mqcp"
],
"score": [
10,
2
],
"text": [
"The particles that cause Cerenkov radiation don't actually travel faster than *c*, the speed of light in a vacuum, they travel faster than the speed of light in the medium in which that light is propagating.\n\nYou can kind... | [] | [] | [
[],
[]
] | ||
27hl5w | Why did Latin-based languages stay dominant in France, Spain and Italy after they were invaded by Germanic peoples? | I'm really a layperson when it comes to the history of Europe, given I've only just started reading into it. It's just something I was thinking of when looking at a book that features a sequence of maps of European countries in history. After the Western Roman Empire dissolved, Germanic tribes seemed to conquer the maj... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/27hl5w/why_did_latinbased_languages_stay_dominant_in/ | {
"a_id": [
"ci0y2f3",
"ci15mjk"
],
"score": [
9,
3
],
"text": [
"There are at least two important points. First of all, Germanic incomers were few in numbers. It is usually thought that Frankish settlement in Gaul must have been in the range of the tens of thousands, on a Latin speaking p... | [] | [] | [
[],
[
"http://www.reddit.com/r/AskHistorians/wiki/language#wiki_frankish_and_french"
]
] | |
eem80e | why do humans have a natural tendency to seek approval? what makes humans social beings? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/eem80e/eli5_why_do_humans_have_a_natural_tendency_to/ | {
"a_id": [
"fbuqdzg"
],
"score": [
3
],
"text": [
"We evolved as such. We cannot survive well on our own, and our survival is tied to the herd. The dynamics of the herd, what we consider being social, are thus very important to our survival."
]
} | [] | [] | [
[]
] | ||
8cuozx | how to properly use articles in english? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8cuozx/eli5_how_to_properly_use_articles_in_english/ | {
"a_id": [
"dxhz2me",
"dxhzglr"
],
"score": [
3,
2
],
"text": [
"\"a\" is for a non-specific noun. If you're talking about \"a dog\" its usually just any dog. The concept of a dog. Or some random dog.\n\n\"an\" is the same as \"a\" but you use it if the following word starts with a vowel.... | [] | [] | [
[],
[]
] | ||
1i1v92 | How is penicillin G different from ampicillin and methicillin? | How is penicillin G different from ampicillin and methicillin? | askscience | http://www.reddit.com/r/askscience/comments/1i1v92/how_is_penicillin_g_different_from_ampicillin_and/ | {
"a_id": [
"cb05lya"
],
"score": [
3
],
"text": [
"All three of those antibiotics are beta-lactam antibiotics. They each contain an identical region in their molecular structure that includes a beta lactam ring. Stemming from this core structure each antibiotic varies slightly. These modification... | [] | [] | [
[
"http://en.wikipedia.org/wiki/File:Penicillin-G.svg",
"http://en.wikipedia.org/wiki/File:Methicillin.svg",
"http://en.wikipedia.org/wiki/File:Ampicillin_Structural_Formulae_V.1.svg"
]
] | |
1c25u8 | Why was segregation in the South the most talked about? Did it exist in the North? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1c25u8/why_was_segregation_in_the_south_the_most_talked/ | {
"a_id": [
"c9cjv29"
],
"score": [
2
],
"text": [
"The main difference in segregation in the south and north is de jure and de facto segregation. This means that in the south segregation was enforced by law while in the north it was enforced by practice or standard."
]
} | [] | [] | [
[]
] | ||
1cn7sr | Interstellar travel: Could electricity be provided by solar panels between solar systems? | askscience | http://www.reddit.com/r/askscience/comments/1cn7sr/interstellar_travel_could_electricity_be_provided/ | {
"a_id": [
"c9i5rf2"
],
"score": [
2
],
"text": [
"The power from photo-voltaic panels is roughly proportional to light intensity, so they're unlikely to be used outside of solar systems. It's more likely that [radioisotope thermonuclear generators](_URL_0_) would be used, since they are capable... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Radioisotope_thermoelectric_generator"
]
] | ||
29innf | Does temperature have momentum? | If a house is heating up at 5 degrees/hour does it require more energy to stop or slow this rate than, say, a house that is heating up at 1 degree/hour?
Is there something like momentum of heat? Thermal inertia? | askscience | http://www.reddit.com/r/askscience/comments/29innf/does_temperature_have_momentum/ | {
"a_id": [
"cilcn20",
"cilfbdo",
"cilgnqv"
],
"score": [
3,
2,
3
],
"text": [
"No, there is no quantity like thermal inertia that I'm aware of. The amount the temperature of something changes as a function of time will rely on how much energy you are putting into it as a function ... | [] | [] | [
[],
[],
[]
] | |
arzoa8 | why can't we see living cells through electron microscope? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/arzoa8/eli5_why_cant_we_see_living_cells_through/ | {
"a_id": [
"egqp6um"
],
"score": [
3
],
"text": [
"Mostly because an electron microscope has to operate in a vacuum. Living cells don't care much for those.\n\n & #x200B;\n\nAlso, sometimes what you're looking at under a scanning electron microscope has to be covered with a very very very very t... | [] | [] | [
[]
] | |
1u4hyz | Was Caesar murdered for selfless reasons (genuine worry about tyranny), or were the assassins seeking to advance themselves? | Or even a combination of the two?
(I've been watching HBO's Rome.) | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1u4hyz/was_caesar_murdered_for_selfless_reasons_genuine/ | {
"a_id": [
"ceek2d8",
"ceem37v",
"ceenrwq"
],
"score": [
74,
28,
22
],
"text": [
"Apparently they were genuinely worried about tyranny and thought they would be praised for their deed.\n\n_URL_0_",
"Although all that I have read in detail on the matter was in [_Cicero_ by Anth... | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/14alnc/what_were_some_political_implications_of_julius/"
],
[
"http://en.wikipedia.org/wiki/Sulla",
"http://en.wikipedia.org/wiki/Gaius_Marius_the_Younger",
"http://www.amazon.com/Cicero-Times-Romes-Greatest-Politician/dp/037575895X",
"http:/... | |
bgfg2g | how does someone die by swallowing his tongue? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bgfg2g/eli5_how_does_someone_die_by_swallowing_his_tongue/ | {
"a_id": [
"elkd6ks",
"elkdhuq"
],
"score": [
4,
7
],
"text": [
"You don’t literally swallow your tongue. Basically as your on your back your tongue moves to the back of your mouth and blocks your air passage.",
"Almost 100% certain this is a myth your tounge is attached to the bott... | [] | [] | [
[],
[]
] | |
jum1h | what is the current role of the national guard? | My best friend recently joined the guard and with the state of things nowadays I really have no idea what that means she will be doing. Can someone please explain to me what exactly people in the National Guard have traditionally done and what it is they do now? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/jum1h/what_is_the_current_role_of_the_national_guard/ | {
"a_id": [
"c2f9bgr",
"c2f9bgr"
],
"score": [
2,
2
],
"text": [
"To send you mail asking you to join.",
"To send you mail asking you to join."
]
} | [] | [] | [
[],
[]
] | |
vwm5d | What were "urban warfare" tactics like before guns? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/vwm5d/what_were_urban_warfare_tactics_like_before_guns/ | {
"a_id": [
"c58aedf",
"c58anks"
],
"score": [
17,
11
],
"text": [
"They didn't really exist. Towns and cities were besieged, they were not battle zones. Once town/city walls were breached, what ensued was pretty much slaughter, rape, and pillage. ",
"As WARFTW says, if an army actua... | [] | [] | [
[],
[]
] | ||
sn5x3 | If Microwaves have larger wave lengths than those of Visible light, why do Microwaves heat up a food faster than visible light? | Within the spectrum of electromagnetic radiation, Microwaves are on par for 10-2 meters whereas visible light is 10^-7. If higher frequencies (smaller wavelengths) are related to energy, why doesn't visible light heat up food faster than microwaves? | askscience | http://www.reddit.com/r/askscience/comments/sn5x3/if_microwaves_have_larger_wave_lengths_than_those/ | {
"a_id": [
"c4fcb4x",
"c4fce4k"
],
"score": [
3,
3
],
"text": [
"The process of heating with a microwave has nothing to do with the energy level of microwaves. \n\nMicrowave ovens work under the principle of ocillation. Basically, given the right frequency of radiation, you can vibrate c... | [] | [] | [
[],
[]
] | |
7w7104 | why can a defibrillator help reset abnormal cardiac rhythms but can’t restart a heart? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7w7104/eli5_why_can_a_defibrillator_help_reset_abnormal/ | {
"a_id": [
"dty086e",
"dty7fo8"
],
"score": [
7,
2
],
"text": [
"A defibrillator effectively stops an abnormal rhythm by briefly stopping the heart's activity, interrupting the irregularity and allowing the normal rhythm to resume. In a stopped heart, \"stopping the heart more\" doesn't h... | [] | [] | [
[],
[]
] | ||
1b5ud0 | Why do many life forms expel waste? | As in why don't we keep breaking the same material down over and over until its all gone? | askscience | http://www.reddit.com/r/askscience/comments/1b5ud0/why_do_many_life_forms_expel_waste/ | {
"a_id": [
"c93x9m4"
],
"score": [
2
],
"text": [
"An organism reaches a point where it has extracted all of the easy energy and materials from a substance and it is no longer efficient to keep going. It is more cost effective to just get rid of the leftovers and bring on more easy to get resourc... | [] | [] | [
[]
] | |
dy3qgc | why can we control body functions like are hands and feet, or even when we have to pee, but we can’t control the inside of our body? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dy3qgc/eli5_why_can_we_control_body_functions_like_are/ | {
"a_id": [
"f7y5ja6",
"f7y7tds"
],
"score": [
6,
2
],
"text": [
"Because during evolution it didnt provide people with statistically significant advantage.\n\nThe way evolution works is, random mutations happen, and if these mutations help the creature survive, that creature can produce m... | [] | [] | [
[],
[]
] | ||
2kitjg | If I place two glasses, one 30C and the other 10C into a room that is 20C, which one will match the room's temperature first? | And why? | askscience | http://www.reddit.com/r/askscience/comments/2kitjg/if_i_place_two_glasses_one_30c_and_the_other_10c/ | {
"a_id": [
"clly78u"
],
"score": [
17
],
"text": [
"To first order approximation, both would approach 20 C at the same time.\n\nFrom there you need to put a correction on how the thermal conductivity and heat capacity changes. There's a *tiny* effect that higher temperatures conduct heat better, ... | [] | [] | [
[]
] | |
419seq | - who are corrupt bankers and why are they so evil? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/419seq/eli5_who_are_corrupt_bankers_and_why_are_they_so/ | {
"a_id": [
"cz0nneg",
"cz0ns0g"
],
"score": [
2,
2
],
"text": [
"From an article on island\n > \n > Their crimes include market manipulation, embezzlement, and breach of fiduciary duties. Their market manipulation destroyed the country’s economy and to this day Iceland is still having t... | [] | [] | [
[],
[]
] | ||
37y5fi | what is the difference between belarus and belarussia? | Currently watching the European Rowing Championships. Most commentators refer to tthe crews from the country as 'Belarus'. But there's one commentator who keeps saying 'Belarussia'. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/37y5fi/eli5_what_is_the_difference_between_belarus_and/ | {
"a_id": [
"crqqyzk"
],
"score": [
6
],
"text": [
"The country is Belarus, the demonym for people from Belarus is belarusian.\n\nIn Russian the country is called Byelorussia. \n\nEither of those possible?"
]
} | [] | [] | [
[]
] | |
s69ed | why the trend toward "sleek" and "smooth", luxurious cars? | It seems like every car/SUV/minivan made nowadays is being redesigned to be sleeker, slimmer, more luxurious (and IMO, most of the SUVs look girly, or mom-y). Why this trend all of a sudden?
On a related note, when "old-looking" cars like [this one](_URL_0_) first came out, were they considered "attractive" or "cool"... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/s69ed/eli5_why_the_trend_toward_sleek_and_smooth/ | {
"a_id": [
"c4bhphf",
"c4blg4f"
],
"score": [
3,
3
],
"text": [
"They are better on gas, and we have better construction techniques that use more fluid forming techniques out of single pieces of metal. In addition to what you said. ",
"There's design trends all through history. They t... | [] | [
"http://static.cargurus.com/images/site/2008/08/21/15/46/1993_toyota_camry_4_dr_le_sedan-pic-49064.jpeg"
] | [
[],
[]
] | |
3g5irr | how does the army national guard work? | Does the Army National Guard have boot camp? Do they pay your housing? What are incentives of the Army National Guard? Is it the same as the reserves? Do you need a diploma or just G.E.D.? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3g5irr/eli5_how_does_the_army_national_guard_work/ | {
"a_id": [
"ctv1eto",
"ctv1jj2",
"ctv1uez",
"ctv368a"
],
"score": [
3,
2,
2,
2
],
"text": [
"I'm not sure about the requirements such as diploma / GED, but it works like this. I'm going to assume we are talking about an enlisted person, not an officer.\n\nWhen you decide ... | [] | [] | [
[],
[],
[
"http://www.nationalguard.com/benefits"
],
[]
] | |
3oallv | why does a scalp feel bruised/sensitive after being in a ponytail for a long time? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3oallv/eli5_why_does_a_scalp_feel_bruisedsensitive_after/ | {
"a_id": [
"cvvh4bd"
],
"score": [
5
],
"text": [
"Hairdos that pull tightly on hair, particularly in a lateral direction along the scalp, actually hurt hair follicles. If you do it too tight for too long, the ones being tugged on the most will actually die, which leads to a receding hairline. "
... | [] | [] | [
[]
] | ||
634t86 | Are people Tourettes Syndrome capable of lying? | [deleted] | askscience | https://www.reddit.com/r/askscience/comments/634t86/are_people_tourettes_syndrome_capable_of_lying/ | {
"a_id": [
"dfs5u3u",
"dfs70or"
],
"score": [
10,
3
],
"text": [
"That's a fundamental misunderstanding of what Tourette's actually is.\n\nTourette's disorder is one of a class of neurodevelopmental disorders called \"tic disorders.\" A tic is defined in the DSM-5 as a sudden, rapid, recu... | [] | [] | [
[],
[]
] | |
slx28 | What are the advantages or lower/higher engine displacement? | For example, one of the faster road cars out there, the Pagani Zonda F has a 7.3L V12, which is enormous. However, Formula 1 engines back in the day would be V12s with something like 3.0L of displacement. What are they advantages/disadvantages of each? Also, what determines the displacement? Is it the actual diameter o... | askscience | http://www.reddit.com/r/askscience/comments/slx28/what_are_the_advantages_or_lowerhigher_engine/ | {
"a_id": [
"c4f1vty"
],
"score": [
2
],
"text": [
"Higher displacement usually translates to greater torque, since there's generally an upper limit to the volumetric efficiency of a normally aspirated engine. F1 engines are small because of regulations, but they also rev roughly twice as high as ... | [] | [] | [
[]
] | |
2kb1gp | Besides energy consumption, is there a reason why spacecraft don't land vertically like old science fiction? | It makes sense to use the atmosphere to slow down since energy is limited, but if energy was unlimited, wouldn't it be safer to descend vertically and slowly? | askscience | http://www.reddit.com/r/askscience/comments/2kb1gp/besides_energy_consumption_is_there_a_reason_why/ | {
"a_id": [
"clk57ot",
"clk5szd"
],
"score": [
4,
2
],
"text": [
"In space jargon engineers usually talk about \"active\" or \"passive\" techniques.\n\nIn the case of the atmosphere, as you said, the main issue is propellant (in rocketry usually mass matters more than energy). But from a m... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Grasshopper_%28rocket%29"
]
] | |
1hdwq1 | Was the failure of central planning in Soviet Russia due to the inherent fallacies of the system, or corruption within the government? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1hdwq1/was_the_failure_of_central_planning_in_soviet/ | {
"a_id": [
"cathxod",
"catjxv9",
"catkmls",
"catp56o",
"catedbx"
],
"score": [
12,
2,
2,
3,
10
],
"text": [
"I think this is an interesting question that I don't have a simple answer for. \n\nI would break it down into time periods though to get a more comprehensiv... | [] | [] | [
[],
[],
[
"http://www.amazon.com/Red-Plenty-Francis-Spufford/dp/B00B9ZDDCC"
],
[],
[]
] | ||
4so79j | In World War One there were examples of spontaneous truces forming along the trenches, were there any examples of this in World War II? | If so what were those examples? If not why not? Are there any examples does a more recent Wars? Has military training been adapted try to prevent it?
Note that I'm not talking about the Christmas Truce has that was apparently a top-down decision. I am referring to many incidents in which they would purposely miss thei... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4so79j/in_world_war_one_there_were_examples_of/ | {
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"text": [
" > the Christmas Truce has that was apparently a top-down decision\n\nJust asking for a bit of clarification here as this is exactly the opposite of my understanding -- from what I understand the high-ranking officers on both sides were fairly ho... | [] | [] | [
[]
] | |
7on3ii | Is it pure coincidence that the Spanish, who were from a warm climate themselves, managed to avoid colonizing any regions of the Americas with a cold climate? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7on3ii/is_it_pure_coincidence_that_the_spanish_who_were/ | {
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"text": [
"Yes, it is a coincidence. Spanish colonies were initially geared towards resource extraction, which did well in places with wealthy, established civiliations already, or in places that had the proper climate for the cash crop of the day (sugar).\... | [] | [] | [
[]
] | ||
cd1d8l | - where does the carbon that trees store, go? | I have seen a lot of posts where trees can save us.
Things really don't dissappear AFAIK, so if the trees eats the carbon dioxide, where does it end up?
I did not spend my attention in school to learn, sadly enough. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cd1d8l/eli5_where_does_the_carbon_that_trees_store_go/ | {
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"text": [
"It becomes part of the wood (the tree's own body). Trees are made largely of carbon.",
"Trees, like all organic matter, contain a lot of carbon, in the simplest terms, the carb... | [] | [] | [
[],
[],
[],
[]
] |
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