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 |
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3gpdtp | what happens to my old memories and skills after a brain transplant? am i the new persons brain now? do i have their memories and skills? am i still me? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3gpdtp/eli5_what_happens_to_my_old_memories_and_skills/ | {
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"text": [
"Everything that is you, is in your brain. So if we took out your brain from your body and put someones else's brain in. \"You\" would be dead and the other person would now be in your body.",
"Isn... | [] | [] | [
[],
[],
[]
] | ||
2y8955 | what is continuous compounding? | Its supposed to be compounding when the time periods are infinity small, but wouldn't that instantly make the amount become infinity as long as interest > 1?
Edit: Thanks guys :D | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2y8955/eli5_what_is_continuous_compounding/ | {
"a_id": [
"cp76vbm"
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"score": [
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"text": [
"The effect your describing is misleading. If my bank account gives me 6 cents per dollar I have in the bank in interest, you might say I get 6% interest. How often this is compounded(figured out and added) is important. \n\nIts always 6% per year... | [] | [] | [
[
"https://en.wikipedia.org/wiki/E_%28mathematical_constant%29"
]
] | |
3m2gg1 | what's up with the cern drama, what are they trying to do? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3m2gg1/eli5whats_up_with_the_cern_drama_what_are_they/ | {
"a_id": [
"cvbcsf8",
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"score": [
6,
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],
"text": [
"What CERN drama? I can find nothing significant about CERN in the news. Are you sure you didn't find a five year old fear-mongering website about how \"oh the LHC will destroy the wooooorrrrlldddd!!!!1!\"",
"It's busines... | [] | [] | [
[],
[
"http://op-webtools.web.cern.ch/op-webtools/vistar/vistars.php",
"https://espace.cern.ch/be-dep/BEDepartmentalDocuments/BE/LHC_Schedule_2015.pdf",
"https://indico.cern.ch/category/6386/"
]
] | ||
3i6tvr | why are modern superhero comics more darker than the classic ones? | Usually in DC and Marvel, the old comics are so cheerful and bright, but as they progress through the years more blood and deaths happen. Why is this? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3i6tvr/eli5_why_are_modern_superhero_comics_more_darker/ | {
"a_id": [
"cuds2j5",
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"score": [
5,
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"text": [
"The medium changes to fit the audience. A lot of the main audience were kids/young teens when they first started and now they've grown up and demand more mature content, which usually equals darker and grittier. It also se... | [] | [] | [
[],
[]
] | |
1irada | the practices/beliefs of the jewish religion. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1irada/eli5_the_practicesbeliefs_of_the_jewish_religion/ | {
"a_id": [
"cb79gta",
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"score": [
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14,
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"text": [
"Judaism is a monotheist... | [] | [] | [
[],
[],
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"http://en.wikipedia.org/wiki/File:First_page_of_the_first_tractate_of_the_Talmud_%28Daf_Beis_of_Maseches_Brachos%29.jpg"
],
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4pbom9 | how can computers just be a whole bunch of "1's and 0's" when they can seemingly do many more things than that? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4pbom9/eli5_how_can_computers_just_be_a_whole_bunch_of/ | {
"a_id": [
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"d4jmdun",
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"score": [
35,
28,
3,
3,
2
],
"text": [
"You are just a whole bunch of carbons, oxygens and hydrogens. But here you are reflecting on the nature of computers. \n\n",
"The same way our alphabet ... | [] | [] | [
[],
[],
[],
[],
[
"http://images.slideplayer.com/19/5845717/slides/slide_12.jpg"
]
] | ||
27lwo5 | the differences (jurisdictional, logistical, cooperative, etc) between law enforcement off and on an american indian reservation. | I'm interested to learn how law enforcement on indian reservations is different than off - I wondered this after watching an episode of Banshee where a police officer mentioned not being able to step foot on the reservation without a federal warrant. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/27lwo5/eli5_the_differences_jurisdictional_logistical/ | {
"a_id": [
"ci22qt9"
],
"score": [
2
],
"text": [
"Kind of a broad topic, and hard to generalize as there are hundreds of reservations and each one is handled differently. \n\nTribes have a high level agreement with the federal government and another for the state they are in that says officers c... | [] | [] | [
[]
] | |
6mc07h | i read that heisenberg's uncertainty principle is often confused or conflated with the observer effect. if they aren't the same thing, then what is the uncertainty principle? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6mc07h/eli5_i_read_that_heisenbergs_uncertainty/ | {
"a_id": [
"dk0gq5t",
"dk0gt6n",
"dk0gtqg"
],
"score": [
3,
2,
4
],
"text": [
"The more accurately you measure position, the less accurately you can measure velocity. There are other relationships, but this one is the easiest to visualize.",
"It use to be thought by some that... | [] | [] | [
[],
[],
[]
] | ||
6be2rd | wanna cry malware and how a system acquires it. | Everyone is doing a great explaining what the hell it does, but no one has explained how computers are being infected in the first place. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6be2rd/eli5_wanna_cry_malware_and_how_a_system_acquires/ | {
"a_id": [
"dhluefa",
"dhlwaxq"
],
"score": [
3,
11
],
"text": [
"It's self replicating, once it's on one computer either by user download or other means, it scans the network for other computers and tries to remote launch on them and continues from there. Atleast that's the last explanat... | [] | [] | [
[],
[]
] | |
8ezz8q | How do deadly/immobilizing viruses like HIV remain prevalent if they cause their hosts to die? | askscience | https://www.reddit.com/r/askscience/comments/8ezz8q/how_do_deadlyimmobilizing_viruses_like_hiv_remain/ | {
"a_id": [
"dy1c1x1"
],
"score": [
5
],
"text": [
"viruses only have to \"live\" long enough to infect another host or hosts. What happens to the host after that is irrelevant. There's a positive correlation between virulence (how much damage the pathogen can cause) and infectivity (the ability o... | [] | [] | [
[]
] | ||
43m0zk | Was enslavement to North America the first instance of African slavery? If not, who was the first to enslave Africans? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/43m0zk/was_enslavement_to_north_america_the_first/ | {
"a_id": [
"czjir86"
],
"score": [
5
],
"text": [
"No, and not by a long shot. \n\nAfricans (which of course is an extremely vague term encompassing thousands of ethnic groups who happen to occupy the same massive continent) have been getting enslaved at least since the time of the Roman Empire.... | [] | [] | [
[]
] | ||
1vdqyi | why do some devices need huge, clunky transformers to go from ac to dc, while others (like usb) are just a tiny plug? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1vdqyi/eli5_why_do_some_devices_need_huge_clunky/ | {
"a_id": [
"cer86eh",
"cerk3lf"
],
"score": [
23,
5
],
"text": [
"Transforming power from AC to DC is a relatively simple task if you only need a little bit of power. However, if you need lots of power then you start worrying about the amount of heat that you are producing.\n\nSomething ... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Rectifier",
"http://en.wikipedia.org/wiki/Wire_gauge"
]
] | ||
7mossy | is the universe loosing density? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7mossy/eli5is_the_universe_loosing_density/ | {
"a_id": [
"drviijb"
],
"score": [
4
],
"text": [
"Yes, this expansion will ultimately lead to heat death unless something happens in the interim."
]
} | [] | [] | [
[]
] | ||
1u1agh | Why did Japan sign the plaza accords? | I'm sure there's a simple answer to this, but I haven't yet discovered it.
Considering that Japan was and still is heavily dependent on exports, why did they voluntarily appreciate the yen relative to the U.S. dollar? Something to do with U.S. pressure? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1u1agh/why_did_japan_sign_the_plaza_accords/ | {
"a_id": [
"cedjgtu"
],
"score": [
2
],
"text": [
"To answer my own question, I think it's because a stronger Yen allowed Japan to make important investments/purchases in the US. Someone correct me if I'm wrong."
]
} | [] | [] | [
[]
] | |
66atno | why we can't immunize against the bacteria that causes tooth cavities | TIL that tooth cavities are caused by bacteria that we are not born with, but we aquire from others just like a communicable disease. So why can't we immunize for it or treat it with medication in the same way we treat other bacterial infections? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/66atno/eli5_why_we_cant_immunize_against_the_bacteria/ | {
"a_id": [
"dgh1h6j",
"dgh5z1z"
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"score": [
4,
3
],
"text": [
"First of all, I read that same post on Reddit and it's BS. Yes, you aren't *born* covered in bacteria but it's very true that you depend on bacteria to live. Bacteria are on your skin. They are in your intestines. If you're ... | [] | [] | [
[],
[
"https://www.sciencedaily.com/releases/2016/03/160310141237.htm"
]
] | |
2hfi2l | why can't reptiles regulate their bodyheat but mammals can? | More specifically what is it that allows us to produce heat and them not? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2hfi2l/eli5why_cant_reptiles_regulate_their_bodyheat_but/ | {
"a_id": [
"cks5ewe",
"cks5nsv"
],
"score": [
4,
2
],
"text": [
"Because they never evolved the necessary organs/glands/nervous system/bits and pieces to regulate body temperature. They've never needed because being cold-blooded does grant certain advantages in the environments that repti... | [] | [] | [
[],
[]
] | |
py78o | To what degree does stellar fusion occur in Black Holes? Are crazy elements formed? | I'm (slightly) familiar with the concept behind nuclear fusion as it occurs in our sun, and I'm wondering how this extends to black holes.
Are the normal processes that govern fusion just scaled up? Would it be possible to have crazy elements like 280 or nutbar things like that? Does matter behave normally in there?... | askscience | http://www.reddit.com/r/askscience/comments/py78o/to_what_degree_does_stellar_fusion_occur_in_black/ | {
"a_id": [
"c3t6cc5",
"c3t7dlp"
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"score": [
11,
4
],
"text": [
"We don't know *exactly* what is going on inside a Black hole, but it's less-compressed cousin is the 'neutron star' which is completely composed of neutrons.\n\nIn a neutron star, the neutrons are compressed so closely that... | [] | [] | [
[
"http://www.astro.umd.edu/~miller/nstar.html",
"http://en.wikipedia.org/wiki/Pauli_exclusion_principle"
],
[]
] | |
86poab | anthropic selection | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/86poab/eli5_anthropic_selection/ | {
"a_id": [
"dw6wbop"
],
"score": [
5
],
"text": [
"I will explain with another question:\n\n\"Why do we only get motivational speakers who overcame cancer, rather than those who didn't?\"\n\nObviously you don't because people who died from cancer can't attend speaking engagements. This is the bas... | [] | [] | [
[]
] | |
tkej4 | Will cryogenically frozen people ever wake up? | Is the practice of cryonics (freezing a terminally ill patient in hopes that medicine will one day be able to wake them up) in any way legitimate? Has the process of freezing a person irreparably damaged cells? | askscience | http://www.reddit.com/r/askscience/comments/tkej4/will_cryogenically_frozen_people_ever_wake_up/ | {
"a_id": [
"c4newwb",
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"score": [
7,
29,
12,
8,
3
],
"text": [
"Doesn't the expantion of frozen water destroy cell membranes and organelles?",
"You might look at the [FAQ at Alcor](_URL_1_), and the [FAQ for scientis... | [] | [] | [
[],
[
"http://alcor.org/sciencefaq.htm",
"http://alcor.org/FAQs/faq01.html",
"http://www.fightaging.org/archives/2012/03/an-update-from-competitors-for-the-brain-preservation-foundations-technology-prize.php",
"http://www.brainpreservation.org/content/competitors"
],
[],
[
"http://www.al... | |
7dhgx7 | why do so many coups occur in africa? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7dhgx7/eli5_why_do_so_many_coups_occur_in_africa/ | {
"a_id": [
"dpxtzgv",
"dpxvtzw"
],
"score": [
3,
2
],
"text": [
"Development is going to be the primary cause.\n\nThe main reason countries fall behind in development is political instability. Economic growth comes from investing in the future, and that requires people to believe in the ... | [] | [] | [
[],
[]
] | |
38n9fp | what exactly is vector data in the context of gis? | I am finding it hard to understand it conceptually and imagining it in my head. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/38n9fp/eli5_what_exactly_is_vector_data_in_the_context/ | {
"a_id": [
"crwacl7"
],
"score": [
2
],
"text": [
"There are two types of data in gis: raster and vector. Basically, raster is represented by pixels which have a different value and are continuous so an entire map will be taken up by these pixels. Vector data is comprised of points, lines, and po... | [] | [] | [
[]
] | |
dpsshy | Himmler diaries, any updates? | Hi. I wonder if anyone here can answer this question. In 2016 or '15 there was news and a lot of writings that historians are restoring and releasing (as book format?) the newly found diaries belonging to Heinrich Himmler. Some vile and sickening excerpts was published in most big media too. Since then, no updates at a... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/dpsshy/himmler_diaries_any_updates/ | {
"a_id": [
"f5yciz7"
],
"score": [
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"text": [
"I'm waiting for those myself, but yes, it takes a huge amount of time to analyze every single entry - you have not only to comment, you have to cross-reference the diaries (actually, appointment calendars) with tens of thousands of other document... | [] | [] | [
[
"http://holocaustcontroversies.blogspot.com/2016/08/the-discovery-of-himmlers-appointments.html",
"https://www.amazon.de/Die-Organisation-Massenmordes-Dienstkalender-1943-1945/dp/3492058965"
]
] | |
a7w24r | Did Mitterand give Thatcher codes to disable Argentina's Exocet missiles during the Falklands War in exchange for chunnel? | I'm looking for confirmation of an old story I heard: Argentina had purchased Exocet anti-ship missiles from France, and those missiles were going to be a threat to the UK's vessels on the way to the Falklands. UK Prime Minister Margaret Thatcher had been a hold out and opposed to the chunnel (unrelated to the missiles... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/a7w24r/did_mitterand_give_thatcher_codes_to_disable/ | {
"a_id": [
"ec6dk4b",
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"score": [
12,
55,
100
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"text": [
"Regarding the \"Exocet codes\", your question overlaps with [this one](_URL_0_). Specifically, /u/The_Chieftain_WG , put the existence of said codes into question and pointed to the lack of corrobor... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/982oq2/during_the_falklands_war_a_nonnuclear_country/"
],
[],
[]
] | |
1dr3yx | What was the relation between the different Archaic Greek poetries? | To expand: I feel I have often heard that in Archaic Greece, there were the rhapsodes wandering around and performing Homer and Hesiod (or the prototypes), and the lyric poets (Tyrtaeus, Pindar, etc) operated on a patronage system, often for occasional lyric, or were dilettantes like Sappho.
But I am somewhat unsatisf... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1dr3yx/what_was_the_relation_between_the_different/ | {
"a_id": [
"c9t25ck"
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"score": [
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],
"text": [
"(Forewarning: I really didn't intend to write anything this long! I apologise, I got carried away. Skip to the last paragraph for the actual answer to your question.)\n\nWe have little evidence on performance circumstances of any genre of poetry... | [] | [] | [
[]
] | |
e4lfs5 | how is music able to be unevenly distributed through headphones? | You know when you’re listening to layered music and you hear the drums on your left ear, and guitar in the right ear......seems like I don’t notice this when playing old time music, so I assume it’s something that has to be programed? in. Would this mean it takes longer to produce music today than before the widespread... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/e4lfs5/eli5_how_is_music_able_to_be_unevenly_distributed/ | {
"a_id": [
"f9colkb",
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"f9crpji",
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"score": [
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2,
5,
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],
"text": [
"Stereo music has existed since the 1950s, and became increasingly common throughout the 60s and 70s. You don't need headphones to hear stereo sound, you can hear it with a good s... | [] | [] | [
[],
[],
[],
[]
] | |
6qnuce | why do our stomachs 'get full' based on the mass of the food we eat, rather than the food's calorie content? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6qnuce/eli5_why_do_our_stomachs_get_full_based_on_the/ | {
"a_id": [
"dkymhrj",
"dkymstp",
"dkyn2uo"
],
"score": [
5,
3,
3
],
"text": [
"Actually appetite is controlled by *both* of these things. If you eat something bulky but low in calories, you'll be hungry again in two hours. And if you eat something extremely rich, as long as you ta... | [] | [] | [
[],
[],
[]
] | |
26jbkp | how come atms spit out crisp dollar bills when people put in wrinkle money? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/26jbkp/eli5_how_come_atms_spit_out_crisp_dollar_bills/ | {
"a_id": [
"chrkgi3",
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"chrll3m",
"chrn62p",
"chrpa1d"
],
"score": [
11,
3,
23,
4,
3
],
"text": [
"The money that you put in an ATM generally does not go right back out to the next person in line. Old money goes through a whole process of checks and exami... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
zl7y6 | American Presidential Historians, what were the most fascinating bits of the Truman era? | I have to pick a very specific subject for a paper relating to truman, and I'm wondering if there is anything really fascinating that I might not have read about or seen yet. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/zl7y6/american_presidential_historians_what_were_the/ | {
"a_id": [
"c65k2os",
"c65kpyv",
"c65lxfo"
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"score": [
3,
3,
3
],
"text": [
"Truman very much struggled with the decision to drop the Atomic bombs, and refused to give into pressure to drop a third bomb. It's something interesting with fairly easy access to material. Of course y... | [] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Truman_assassination_attempt",
"http://en.wikipedia.org/wiki/Potsdam_Conference",
"http://www.trumanlibrary.org/kids/piano.htm"
]
] | |
an2pxm | how can boats have holes in the bottom to drop things into the ocean? | I mean like boats that launch submarines or what-have-you. How do they stay afloat when there's a great big hole in the bottom? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/an2pxm/eli5_how_can_boats_have_holes_in_the_bottom_to/ | {
"a_id": [
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"score": [
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3,
4,
7,
2,
2
],
"text": [
"They are kept afloat by other sections that *don't* have holes in them. Think of a twin-hulled catamaran: the whole middle is a giant ho... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | |
1qof5m | why is it important to search for methane on mars? is methane actually present on mars? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1qof5m/eli5_why_is_it_important_to_search_for_methane_on/ | {
"a_id": [
"cdetkek",
"cdetltx"
],
"score": [
3,
3
],
"text": [
"Methane is a by product of life on Earth. If found on Mars it could indicate that there is life. ",
" > Why is it important to search for methane on mars? \n\n\nBecause methane idicates the breakdown of biological mate... | [] | [] | [
[],
[]
] | ||
fxmp8w | How would the contagiousness (R0) of seasonal flu compare to COVID-19 virus, if nobody was immune to flu either? | I often read things like “COVID-19 is somewhat more contagious than the flu” or “COVID-19 virus R0 is somewhere between 3 and 4, but flu R0 is around 1.3“.
That naturally makes me think that COVID-19 virus is just inherently better at infecting people, independent of environmental or population factors.
But what didn... | askscience | https://www.reddit.com/r/askscience/comments/fxmp8w/how_would_the_contagiousness_r0_of_seasonal_flu/ | {
"a_id": [
"fmymchr",
"fmvt6jx",
"fmvtfr4"
],
"score": [
2,
5,
7
],
"text": [
"It is indeed the incubation period where you have no symptoms but the viral shedding is occurring where as with most flus you become symptomatic as the virus sheds which is when you're most contagious. ... | [] | [] | [
[],
[],
[
"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2880578/"
]
] | |
8vt6sh | Slave culture in the caribbean - can anyone recommend some reliable sources? | I'm a writer by profession, and am currently working on a project that's partly set in Jamaica in the 1790s. I'm having no problem finding sources about life on the sugar plantations from the perspective of the slave owners; those guys liked to write. However I'm struggling to find any comprehensive, reliable texts abo... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/8vt6sh/slave_culture_in_the_caribbean_can_anyone/ | {
"a_id": [
"e1qkc4p"
],
"score": [
4
],
"text": [
"There are many on here who have more expertise in the later 18th century Caribbean than I, but I do know a few sources that you could consult.\n\nThe first issue you will confront is that there is a dearth of sources from enslaved people's point ... | [] | [] | [
[
"https://brbl-dl.library.yale.edu/vufind/Record/3472441",
"https://books.google.com/books/about/In_Miserable_Slavery.html?id=op_qoacJHq4C",
"http://ufdc.ufl.edu/AA00021144/00001"
]
] | |
432tyi | if computers have been able to win at chess for years, why did it take them this long to win at go? | Granted the game is more complex, but is it really THAT much more complex? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/432tyi/eli5_if_computers_have_been_able_to_win_at_chess/ | {
"a_id": [
"czezyq1",
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"score": [
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2,
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"text": [
"You answered your own question. Go is considered to be the pinnacle of strategy games, because while it's instructions are easier than chess, there is much skill and little luck involved in winning at h... | [] | [] | [
[],
[],
[]
] | |
6t390b | why do we have to separate paper from plastics, glass, and metals when recycling? | In my neighborhood we have two separate bins: one for paper only, and another for other recyclables. In middle school I also used to help pick up recycling bins (paper and plastic separate) from classrooms as a leadership project. We always mixed everything into a larger bin in the end anyway, so I never understood the... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6t390b/eli5_why_do_we_have_to_separate_paper_from/ | {
"a_id": [
"dlhkaxq",
"dlhkpsq"
],
"score": [
3,
2
],
"text": [
"Because glass is melted and paper is turned into liquid pulp. Can't recycle them together during the same process, and recycling is expensive enough without paying some poor worker to separate them for you.",
" > Can't r... | [] | [] | [
[],
[]
] | |
3rr13d | How do Islamic writings of the Trans-Saharan Slave trade routes in Africa compare to those of the Western writings of the Atlantic Slave Trade? | I'm considering examining this question as a mini thesis (~2500) words as my HSC Extension History Major Project, but I'm interested to hear what people with actual credentials say about the historiography of slavery. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3rr13d/how_do_islamic_writings_of_the_transsaharan_slave/ | {
"a_id": [
"cwqk02h",
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"score": [
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"text": [
" > I'm interested to hear what people with actual credentials say about the historiography of slavery.\n\nYes, this is a necessary step of any historical research project! Ideally, a major history paper (although I don't kn... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Ibn_Khaldun",
"https://www.reddit.com/r/AskHistorians/comments/2p3t4y/what_ethnicity_were_the_mamluks/cmtqn5g",
"http://oxfordindex.oup.com/view/10.5871/bacad/9780197264782.003.0004",
"https://en.wikipedia.org/wiki/Leo_Africanus",
"https://www.reddit.com/r/... | |
3pk1gu | - how the dial lock on a safe works. | Images would probably be helpful. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3pk1gu/eli5_how_the_dial_lock_on_a_safe_works/ | {
"a_id": [
"cw73qfc"
],
"score": [
2
],
"text": [
"Im too lazy to find pics. Imagine a pizza on a table. Stand the pizza on its edge. Remove one slice from the pizza. Place a metal bar above the pizza. Now as you rotate the pizza the metal bar will fall into the pizza when the missing section is ... | [] | [] | [
[]
] | |
sdyyc | Do less attractive people tend to be more kind, and very attractive ones less so? | I find, subjectively, that unusually beautiful people tend to be unkind, and less beautiful people make up for it with extra kindness. I find that only in people in their teens and early twenties, which leads me to suspect that attractive people simply pick up their social skills a little later.
But maybe I'm just jea... | askscience | http://www.reddit.com/r/askscience/comments/sdyyc/do_less_attractive_people_tend_to_be_more_kind/ | {
"a_id": [
"c4da5z4",
"c4ddsvs"
],
"score": [
21,
2
],
"text": [
"I found this abstract of an [article](_URL_0_):\n\n > Common maxims about beauty suggest that attractiveness is not important in life. In contrast, both fitness-related evolutionary theory and socialization theory suggest t... | [] | [
"http://en.wikipedia.org/wiki/Physical_attractiveness#Social_effects"
] | [
[
"http://psycnet.apa.org/?fa=main.doiLanding&doi=10.1037/0033-2909.126.3.390"
],
[
"http://www.amazon.com/Survival-Prettiest-The-Science-Beauty/dp/0385479425/ref=wl_it_dp_o_pC_S_T1?ie=UTF8&coliid=I3TPMA9U26Z1UP&colid=1MBSULBUB7JVU",
"http://www.amazon.com/Looks-They-Matter-More-Imagined... | |
3al2ag | why do some people cut most of a dog's ears off? | I never understood this | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3al2ag/eli5why_do_some_people_cut_most_of_a_dogs_ears_off/ | {
"a_id": [
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"csdmp3w",
"csdng5t",
"csdng81"
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"score": [
41,
19,
16,
2,
13
],
"text": [
"Cropping the ears used to be for working dogs, and unfortunately for fighting dogs. Now it's more for breed standards and stupid owners.",
"I assume y... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Cropping_\\(animal\\)"
],
[],
[],
[]
] | |
4qr3iy | why do tv shows and films often have their characters using fake social media websites/search engines on screen? | Is there a reason they can't just show Twitter or Google or whatever? Often times they use some stupidly named app with an unrealistic looking UI when it's very clear what they're actually trying to represent. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4qr3iy/eli5_why_do_tv_shows_and_films_often_have_their/ | {
"a_id": [
"d4v6iuo"
],
"score": [
6
],
"text": [
"It is considered advertising and there are a few reason they avoid it. \n\n1) It being advertising they want to be paid for it. Most will not pay so they make imitation products. It is the same reason they invent soda or beer brands, and why appl... | [] | [] | [
[]
] | |
97zc9f | Can something be too cold to burn? | If we want to put out a stack of sticks from our lawn, removing the fuel or oxygen is pretty easily done. Simply take away the unburned sticks or smother the fire with sand, a blanket, etc.
What about denying the fire heat, though? Without changing the amount or availability of the fuel or oxygen, like introducing com... | askscience | https://www.reddit.com/r/askscience/comments/97zc9f/can_something_be_too_cold_to_burn/ | {
"a_id": [
"e4ce4pg",
"e4cwpt4"
],
"score": [
37,
2
],
"text": [
"Former US Navy trained firefighter here.\n\nThis is exactly how water extinguishes a fire.\n\nThere are four components to fire: fuel, oxidizer, heat, and a chemical chain reaction. Remove any one of those components, and... | [] | [] | [
[],
[]
] | |
2r5ld2 | why is the diamond pattern used so much on metal plate? | I was taking a tour on the panama canal and noticed a steel plate with a diamond pattern. Then I realized that the pattern is everywhere. Why is it so common? Is it for traction? If so, then why use that pattern in particular? [Context](_URL_0_) | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2r5ld2/eli5_why_is_the_diamond_pattern_used_so_much_on/ | {
"a_id": [
"cncoa3h",
"cncokge"
],
"score": [
3,
3
],
"text": [
"It's cheap / it's rugged/ it's got grip/ and it looks bad ass. Perfection",
"It's to make the surface less slippery and provide more traction. In many of metal's uses, such as flooring, this is considered a good feature... | [] | [
"http://nexuswallz.com/wp-content/main/2012_02/Metal_Diamond_Plate_Pattern.jpg"
] | [
[],
[]
] | |
2l6nft | What truth is there for the ferocity of indigenous American tribes in torture and execution. | This question is based on the old cowboys and Indians idea of burying someone up to his neck and letting the ants eat him. Was that just a '60s TV fiction? These questions got me interested in the legal system of American Indians and how they defined crime. I imagine that not much is documented pre-Columbus so I guess ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2l6nft/what_truth_is_there_for_the_ferocity_of/ | {
"a_id": [
"clsohg6"
],
"score": [
4
],
"text": [
"There is certainly some truth to it. The most horrific example I know of is the alleged death of Lt. Thomas Boyd during the American War of Independence.\n\nBoyd was part of the Sullivan Expedition, one of the United States' largest military camp... | [] | [] | [
[
"https://archive.org/stream/historyofsulliva00nortiala/historyofsulliva00nortiala_djvu.txt",
"https://en.wikipedia.org/wiki/Boyd_and_Parker_ambush"
]
] | |
1tn41z | Are the secret doors, complex puzzle locks, deadly traps, and other ancient mechanisms that we see in movies based in reality? | We've all seen movies (like Indiana Jones) that are full of fantastically complex mechanisms incorporated into ancient structures: hidden levers, puzzle locks, and labyrinths full of complicated deadly traps that attempt to kill the hero. Did any of these kinds of devices exist, even in a more rudimentary form, in the ... | askscience | http://www.reddit.com/r/askscience/comments/1tn41z/are_the_secret_doors_complex_puzzle_locks_deadly/ | {
"a_id": [
"ce9o924",
"ce9ow2v",
"ce9ox8n",
"ce9p4mv",
"ce9qvyo",
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"ce9rr3z",
"ce9sybu",
"ce9w9t4",
"ce9wccf",
"ce9ytnw",
"ce9z06h",
"cea01fz",
"ceai189"
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"score": [
707,
266,
347,
206,
54,
17,
14,
... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Mausoleum_of_the_First_Qin_Emperor"
],
[
"http://www.reddit.com/r/AskHistorians/comments/1j15ae/is_there_any_historical_precedent_for_a_premodern/"
],
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Daulatabad,_Maharashtra#Fort_of_Devagiri",
"http://www.ajan... | |
3y7ql4 | why do so many different types of animals have whiskers? i understand their uses, but how did so many creatures evolve to have them? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3y7ql4/eli5_why_do_so_many_different_types_of_animals/ | {
"a_id": [
"cyb9zni",
"cybao9o"
],
"score": [
8,
3
],
"text": [
"They didn't all evolve them separately. Every mammal that has whiskers is descended from an ancestor that had whiskers. ",
"Arguably similar to how so many animals have ears. Or mouths. Common ancestors prevailed by us... | [] | [] | [
[],
[]
] | ||
23pm70 | how did countries joining the euro & issuing euro bonds change the bond markets in countries like greece? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/23pm70/eli5_how_did_countries_joining_the_euro_issuing/ | {
"a_id": [
"cgzbell",
"cgzbs3b"
],
"score": [
2,
2
],
"text": [
"this is just an illusion. it doesn't change the bond market.\n\nWhat it does change is the expectation of risk:\n\nPIGG country = notional risk = higher returns.\n\nBUT\nEuro = bailout = no risk.\n\nso for the banks we move ... | [] | [] | [
[],
[]
] | ||
2y2dq3 | Why were the conflicts in Northern Ireland not considered a civil war? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2y2dq3/why_were_the_conflicts_in_northern_ireland_not/ | {
"a_id": [
"cp660yc"
],
"score": [
4
],
"text": [
"This is a more complex question than it might appear. Given that the majority of the victims and perpetrators of the violence came from NI you might assume it was a civil war. There are some reasons for not using the term:\n\nPolitically it is re... | [] | [] | [
[]
] | ||
2gl76i | The Development of Democracy? | After civilization was "formed" by the Sumerians in 3500 BC, it took 2000 years for democracy to develop in Greece, then Rome.
What were the factors that lead the Greeks and Romans to develop democracy? What made them suddenly think of it? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2gl76i/the_development_of_democracy/ | {
"a_id": [
"ckkofso"
],
"score": [
2
],
"text": [
"Although it is credited with the ancient Athenians, democracy in a broad sence, is believed to have already been practiced by several other lesser civilizations and tribes. A widely accepted theory is that in any close knit tribe where the commun... | [] | [] | [
[]
] | |
6x9iss | when does mass murder become genocide? | So i was reading this: _URL_0_
article i found on /r/worldnews.
Now the title is; "Fears of genocide as up to 3000 Rohingya muslims killed in Myanmar in last three days"
With almost 1000 kills a day, I would say it's genocide already.. I mean wheres the line? 5k killed in less then 24 hours? More then 100.000 in x a... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6x9iss/eli5_when_does_mass_murder_become_genocide/ | {
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"dme6xpn",
"dme79ce",
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"score": [
19,
5,
3,
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"text": [
"It's not a question of numbers, either absolute or relative.\n\nGenocide is the systematic attempt to exterminate a group of people based upon some shared characteristic, for exam... | [] | [
"https://www.dailysabah.com/asia/2017/08/28/up-to-3000-muslims-killed-in-myanmar-in-3-days-european-rohingya-council-says"
] | [
[],
[],
[],
[]
] | |
383qhw | why do so many english native speakers use double negation when it's grammatically incorrect ? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/383qhw/eli5_why_do_so_many_english_native_speakers_use/ | {
"a_id": [
"crs1lk1",
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"crs4lb6",
"crs4ub2",
"crs4z0j",
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"crs78wo",
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"crs9vsc",
"crsau97",
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"score": [
39,
247,
... | [] | [] | [
[],
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[],
[],
[],
[],
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[],
[],
[],
[],
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[],
[],
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] | ||
6bki23 | Could a binary star system have a planet tidally locked to the baricenter? | askscience | https://www.reddit.com/r/askscience/comments/6bki23/could_a_binary_star_system_have_a_planet_tidally/ | {
"a_id": [
"dhnor2y",
"dhnx6oi",
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"score": [
4,
8,
3
],
"text": [
"There's no reason there couldn't be. However, a system where a planet has no velocity with respect to the stars would be incredibly unlikely and any slight perturbation would cause it to rapidly acceler... | [] | [] | [
[],
[],
[]
] | ||
19pd1p | Are there any practical uses for trying to get a Noble gas to react with other elements/compounds. | I know there was an expirament in which Xenon was successfully forced to react. But why? What's the point, an is there any use for this? | askscience | http://www.reddit.com/r/askscience/comments/19pd1p/are_there_any_practical_uses_for_trying_to_get_a/ | {
"a_id": [
"c8q3sld",
"c8q44wn",
"c8qnyoo"
],
"score": [
3,
3,
3
],
"text": [
"Noble gas compounds have fairly niche uses, in general. Many are very strong oxidising agents and could be quite useful because there's little chance of any side reactions happening - [xenic acid](_URL_... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Xenic_acid"
],
[],
[
"http://en.wikipedia.org/wiki/Excimer_laser"
]
] | |
1qlln1 | What goes on inside the newborn after the umbilical cord is cut? And what is going on inside in pre-belly button times? | I know the very basics of how the umbilical cord connects the baby to the placenta and such, but i realised that i'm not quite sure what happens on the inside of the baby during pre-belly button times. And what happens on the inside of the baby after birth, when connection is cut? | askscience | http://www.reddit.com/r/askscience/comments/1qlln1/what_goes_on_inside_the_newborn_after_the/ | {
"a_id": [
"cde5yy7"
],
"score": [
2
],
"text": [
"The umbilical cord connect the foetus to the placenta, which in turn is attached to the uterine wall. At the placenta the foetal blood circuit runs in a series of villi (fingerlike projections) into a pool of maternal blood which has leaked into ... | [] | [] | [
[]
] | |
f1yocm | Who actually wrote/compiled the Qur'an? | I'm trained in Biblical Studies and understand the origins of the Hebrew Bible and New Testament, but what about the Qur'an? It's believed to be the word of G-d by Muslims - but what is actually known about its historicity? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/f1yocm/who_actually_wrotecompiled_the_quran/ | {
"a_id": [
"fh9jh0j",
"fha8zsc"
],
"score": [
21,
12
],
"text": [
"You might find [this discussion ](_URL_0_) useful to answer the question about where and how the text originated.\n\nThere aren’t good theories as to who wrote the Quran if Muhammad wasn’t the author (or transmitter, in th... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/eplfpz/where_are_all_the_direct_manuscripts_of_all_the/?utm_source=share&utm_medium=ios_app&utm_name=iossmf"
],
[]
] | |
bnmjj7 | How were the most recently discovered Elements (ie. 113, 117, 119 ect.) documented, when their half lives are so short? | askscience | https://www.reddit.com/r/askscience/comments/bnmjj7/how_were_the_most_recently_discovered_elements_ie/ | {
"a_id": [
"en7i4dk",
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"score": [
9,
3
],
"text": [
"Depending on the lifetime of the nuclide and your experimental setup, you may or may not have time to directly detect it before it decays. If not, you can just detect its decay products and infer what the original nucleus wa... | [] | [] | [
[],
[]
] | ||
b766d7 | why do our eyes strain when we look up instead of down when we're awake, even though they automatically rest looking upwards when we're asleep? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/b766d7/eli5_why_do_our_eyes_strain_when_we_look_up/ | {
"a_id": [
"ejpltki",
"ejpxq3n"
],
"score": [
7,
8
],
"text": [
" > even though they automatically rest looking upwards when we're asleep?\n\nThey don't. Your eyes don't roll back into your head when you sleep, not sure why you think they do.",
"It's not the eyes straining when looki... | [] | [] | [
[],
[]
] | ||
6kz31l | what do gulf countries have against al jazeera in particular? | What specifically about Al Jazeera news channel do Gulf countries disapprove so much? Was it a particular topic, general disapprovement, or something else? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6kz31l/eli5_what_do_gulf_countries_have_against_al/ | {
"a_id": [
"djpvroa",
"djq3m2u",
"djq85v1"
],
"score": [
9,
5,
4
],
"text": [
"Authoritarian states are usually distrustful of any media they don't control. The Qatari government has allowed AJ to report on corruption and human rights abuses that the other Gulf countries would hav... | [] | [] | [
[],
[],
[]
] | |
7k7wun | Why are elementary-aged students in the US knowingly taught a version of US History that middle and high schools have to completely contradict and reexplain? | I’ve always wondered why so many of the lessons about history (especially US history) taught during the early years of my education (late ‘90s and early ‘00s) were based on myths or tall tales that all my later teachers would have to completely negate. Stuff along the lines of “Columbus proved the Earth was round” or “... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7k7wun/why_are_elementaryaged_students_in_the_us/ | {
"a_id": [
"drcdzxj",
"drcwmej",
"drdi3m1",
"drdos1b"
],
"score": [
1114,
337,
145,
54
],
"text": [
"I am not a historian per se, but I am a teacher, so hopefully I can answer this question in a way that the mods will allow to remain. If not, forgive me. \n\nTeachers in al... | [] | [] | [
[
"https://tea.texas.gov/index2.aspx?id=6148",
"http://ritter.tea.state.tx.us/rules/tac/chapter113/ch113b.html"
],
[],
[
"https://nces.ed.gov/pubs2007/2007305.pdf"
],
[
"http://www.washingtonpost.com/wp-dyn/content/article/2010/12/29/AR2010122903028.html",
"https://liberalarts.utexas.e... | |
alekrb | almonds trees and alike 'use' a lot of water, where does all that water go? | This is in reference to a recent TIL post saying how much water almonds use to produce. Don't trees filter out water and cause a microclimate which in turn makes it rain more? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/alekrb/eli5_almonds_trees_and_alike_use_a_lot_of_water/ | {
"a_id": [
"efde3jg",
"efdxzop"
],
"score": [
6,
4
],
"text": [
"It goes away quite quickly: they run it up to their leaves, and it evaporates from there. This in turn pulls more water up, and so it continues.",
"most water consumed by plants is evaporated from the leaves (and stem, w... | [] | [] | [
[],
[]
] | |
2d7pl1 | how do people tame predators such as tiger or lions? | Do they have to raise them from a young age? How would you know that they don't look at you as food? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2d7pl1/eli5how_do_people_tame_predators_such_as_tiger_or/ | {
"a_id": [
"cjmwd56",
"cjmxqku"
],
"score": [
3,
2
],
"text": [
"Raising them from birth helps. If you feed something and give it enough food and space and entertainment, it won't be as inclined to kill you. Although they're tame, not domesticated, so they could snap at any moment.",
... | [] | [] | [
[],
[
"https://www.youtube.com/watch?v=ms-piPxEzbk"
]
] | |
f0jffa | if you’re short sighted, are you able to see something clearly in a mirror that is close to you showing a reflection of something that is further away? or is it still not readable even in the mirror? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f0jffa/eli5_if_youre_short_sighted_are_you_able_to_see/ | {
"a_id": [
"fguh2oj"
],
"score": [
2
],
"text": [
"Looking into a mirror or directly at this far away object, the light from the object has to travel such a distance any way you look at it, so the object would still not be readable even in the mirror."
]
} | [] | [] | [
[]
] | ||
7535bj | How much does the toothpaste you use really affect your dental hygiene? | askscience | https://www.reddit.com/r/askscience/comments/7535bj/how_much_does_the_toothpaste_you_use_really/ | {
"a_id": [
"do4fk6z"
],
"score": [
5
],
"text": [
"Fluoride ions in toothpaste and drinking water intercalate into the enamel that covers the outside of the tooth increasing resistance to decay and acidic erosion. Also, triclosan, a bactericidal agent, is added to some brands to inhibit plaque fo... | [] | [] | [
[]
] | ||
i7o0q | A question about the human body | With a narrow enough focus, could you say that something like a organ is a living creature in its own right?
For instance could a heart be said to be a creature that found a way to obtain nutrients by latching onto the 'creatures' around it, and it just so happens to do something that is immensely beneficial to keepin... | askscience | http://www.reddit.com/r/askscience/comments/i7o0q/a_question_about_the_human_body/ | {
"a_id": [
"c21k25k",
"c21l5ut",
"c21myz3",
"c24i4mq"
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"score": [
12,
6,
2,
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"text": [
"\nI would say that an organ (such as the heart) fails to meet at least key one criterion of the [definition of a living creature](_URL_0_) - it can't reproduce.\n\nEven the most b... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Life#Biology"
],
[],
[],
[
"http://en.wikipedia.org/wiki/HeLa"
]
] | |
8e4q5u | Why didn’t other American colonists mix cultures and have children to the extent the Spanish did? | Sorry if this is a dumb question. As I understand, different Hispanic groups are mixes of Spanish, Native American, and black ethnic groups. From my experience, many retain cultural ties to all three of these (ie. Taíno or Aztec symbology, words, and mythology or art and music from West Africa mixing with their culture... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/8e4q5u/why_didnt_other_american_colonists_mix_cultures/ | {
"a_id": [
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"text": [
"\nThis question comes up from time to time and has [a section in the faq](_URL_0_).\n\nThe most interesting answers from there might be: [This one raising a few general points]( _URL_3_ ); this one going into [Spanish American organisation](_URL... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/wiki/southamerica#wiki_racial_differences.3A_north_v_south.2Flatin_america",
"https://www.reddit.com/r/AskHistorians/comments/6qjdib/are_native_mexicans_considered_an_indigenous/dlg8sp8/?context=3",
"https://www.reddit.com/r/AskHistorians/comments/16v0we/why_are... | |
176klo | What was the climate in the Mediterranean in antiquity? | Especially in Northern Africa and the Levant. My impression is that it was wetter than it's now, but are there any publications which would analyze the accounts of ancient historians and draw conclusions from that? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/176klo/what_was_the_climate_in_the_mediterranean_in/ | {
"a_id": [
"c82umr9"
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"score": [
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"text": [
"The data you seek should be available through paleoclimatic reconstruction combining data from dendrochronology, palynology and stratigraphy. You should turn towards geological sources and find what you need. A very quick search turned up the fol... | [] | [] | [
[
"http://pages-142.unibe.ch/products/abstracts/Abstracts1998_PEPIII.pdf",
"http://www.geo.uni-mainz.de/Dateien/Luterbacher_2012_MedClivar.pdf",
"http://onlinelibrary.wiley.com/doi/10.1029/94PA02672/full"
]
] | |
b8pri1 | is a "meal-in-a-pill" theoretically possible? if so, what are the current limitations in developing it? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/b8pri1/eli5_is_a_mealinapill_theoretically_possible_if/ | {
"a_id": [
"ejzcnzc"
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"score": [
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"text": [
"So we've got ones that have all the vitamins and minerals already, that part is down.\n\nThe issue would be shoving all the calories in there, in a way your body could digest them. That part is a lot harder. There is going to be a lot more mass... | [] | [] | [
[]
] | ||
lu5cr | X-post from DAE - what causes the "fizzy" sound in your neck? | Really hard to describe - here's the DAE thread about it: _URL_0_
Sounds like fluid draining, or small beads hitting a hard surface, or as my gf describes it "fizzing" that seems to come from the back of your head/neck area. What causes it? | askscience | http://www.reddit.com/r/askscience/comments/lu5cr/xpost_from_dae_what_causes_the_fizzy_sound_in/ | {
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"text": [
"I don't have a great answer for this, but I can tell you it is fairly common, could be due to several different things, and most all are likely benign. If you have concerns please talk to your doctor. ",
"I don't hav... | [] | [
"http://www.reddit.com/r/DoesAnybodyElse/comments/ltd99/dae_occasionally_hear_a_sound_inside_their_body/"
] | [
[],
[]
] | |
4tqjt3 | Why are planets not tidally locked with the sun? | We only see one side of the moon because it's tidally locked with the earth. Why do other orbiting bodies not tidally lock with their centers? (i.e. planets and the sun) | askscience | https://www.reddit.com/r/askscience/comments/4tqjt3/why_are_planets_not_tidally_locked_with_the_sun/ | {
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"Given enough time, all the planets will become tidally locked with the Sun. The timescale involved though are in the billions - trillions of years (for the outer planets). How ... | [] | [] | [
[
"https://www.reddit.com/r/askscience/comments/4toh1d/why_do_we_see_only_one_side_of_the_moon_ever/d5izqnr",
"http://www.gizmag.com/tidally-locked-exoplanets-potentially-habitable/39407/"
],
[],
[],
[]
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37h7v0 | How were Gobekli Tepe and Ollantaytambo constructed at the time they were, apparently without any advanced tools? | I've been watching a bit of Ancient Aliens and I was wondering how certain megalithic sites were constructed. These sites just seem too massive and too perfectly constructed, in terms of how large the stones are and how well the stones fit together. I'm hoping for an explanation that doesn't involve aliens or something... | askscience | http://www.reddit.com/r/askscience/comments/37h7v0/how_were_gobekli_tepe_and_ollantaytambo/ | {
"a_id": [
"crn32kl"
],
"score": [
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"text": [
"Basically, slow methods that use up tools. We're used to fast methods that don't destroy our tools, so it's hard to imagine working in such a way. Hitting rocks against each other, rocks rubbing on other rocks with hard grit between, soft mater... | [] | [] | [
[]
] | |
ebhbd3 | what is the point of having a separate police force? why not just have the army do the policing? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ebhbd3/elif_what_is_the_point_of_having_a_separate/ | {
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3,
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"The army is trained to kill enemies. The police is trained to keep the peace. It's not the same training at all, having the army do the policing is a recipe for an authoritative government.",
"The m... | [] | [] | [
[],
[],
[]
] | ||
2izunf | how does the information travel through cords to make sound on speakers? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2izunf/eli5_how_does_the_information_travel_through/ | {
"a_id": [
"cl717vw"
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"As electrical voltages and currents. If you put a 1 kHz AC current (current that swap directions 1000 times a second) on the wire, it causes the speaker to move at 1 kHz, which causes the air to move at 1 kHz, which makes you hear a 1 kHz tone. ... | [] | [] | [
[]
] | ||
31r7lq | Were there ever any cases of "Wizards" being put to death during the period of hysteria about witchcraft? How were they treated as opposed to the women in their "trials"? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/31r7lq/were_there_ever_any_cases_of_wizards_being_put_to/ | {
"a_id": [
"cq4b6pv",
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"score": [
32,
6
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"text": [
"In the European middle ages about 50% of trials for sorcery with intent to harm (*malefica*) were against men. By the early modern period (after ~1500 CE) males accounted for 20% or thereabouts, reflecting the shift from po... | [] | [] | [
[],
[
"http://salem.lib.virginia.edu/people?group.num=G08&mbio.num=mb46http://en.wikipedia.org/wiki/List_of_people_of_the_Salem_witch_trials"
]
] | ||
1cwu6f | why does built-in navigation cost so much more? | I'm looking at cars and it looks like getting GPS navigation included costs abut $1000-$2000 extra. But I can buy a Tom Tom, Garmin etc. for ~$100.
Is this just about profit-seeking by the car manufacturer? Or is there something different about the GPS that's built into the car? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1cwu6f/eli5_why_does_builtin_navigation_cost_so_much_more/ | {
"a_id": [
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"Because they can. It's not exactly rare that the official accessories and addons costs more than 3rd party alternatives that often are better as well. The reason for why it works out for them is that lots of people simply don't bother to look for... | [] | [] | [
[]
] | |
3c456x | what is the white stuff (i assume it's ice) that i always see falling off of space shuttles at take off and what does it do? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3c456x/eli5_what_is_the_white_stuff_i_assume_its_ice/ | {
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... | [] | [] | [
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3fniea | If you were to travel passed a sound source and fly through its sound waves at supersonic speeds, would you hear the sound backwards? | I saw Neizir's post and it got me thinking. [Here] (_URL_0_) is a gif I put together to help demonstrate my question. | askscience | http://www.reddit.com/r/askscience/comments/3fniea/if_you_were_to_travel_passed_a_sound_source_and/ | {
"a_id": [
"ctqaa7t"
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"text": [
"Sort of, but not really. This is one case where the math is a little misleading unless complemented by physical intuition. Mathematically, you can just use the general expression for the Doppler shift which is:\nf=(c+vr)/(c+vs)\\*f0, where f is t... | [] | [
"http://gfycat.com/DisguisedBetterBlackandtancoonhound"
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[
"https://en.wikipedia.org/wiki/Shock_wave",
"https://upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Transonico-en.svg/300px-Transonico-en.svg.png",
"https://upload.wikimedia.org/wikipedia/commons/e/e4/Dopplereffectsourcemovingrightatmach1.4.gif"
]
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2d25pi | Was the Uncle of a King a Prince? | So, say there was a king has 3 sons. They would be princes, correct? And if that king died and his firstborn took the throne, would his brothers still be considered princes? If that king had children, and then died would the uncles of the current king be counted as princes still? I understand this question likely diffe... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2d25pi/was_the_uncle_of_a_king_a_prince/ | {
"a_id": [
"cjlflyu"
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"score": [
16
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"text": [
"The use of prince you are referring to is the direct sons of a ruling monarch. If said uncle was the son of a king, then theoretically they would still be a prince. \n\nThat said, these men often received other titles and often those took preced... | [] | [] | [
[]
] | |
a5sydq | if looking up personal information on public wifi is considered dangerous, why does no one seem to warn about doing the same on cell phone networks shared by way more people? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/a5sydq/eli5_if_looking_up_personal_information_on_public/ | {
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"eboyxr6",
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14,
2,
2
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"In a cell phone network, data is encrypted between you and the tower, this makes it fairly secure unless someone pretends to be the tower\n\nOn public WiFi, if it's open then your data is flying around... | [] | [] | [
[],
[],
[]
] | ||
2qpg5q | Did the therm 'gothic architecture' come from italian clergymen lookng to ridicule northern european ecclesiastic architecture by comparing it to the barbarian tribe, who sacked Rome? | I heard it from my favourite teacher in high school, but I recently wondered if there are any sources to support it. It would explain how the word gothic came to describe an architecture, a litterary genre and a modern subculture. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2qpg5q/did_the_therm_gothic_architecture_come_from/ | {
"a_id": [
"cn891dg"
],
"score": [
3
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"text": [
"From [my answer to a similar question a while ago](_URL_0_):\n\n'Gothic' is a term we receive from the Italian renaissance and then further embellished as a pejorative in the subsequent two centuries. Gothic stems from the 'goths', or barbarians,... | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/1ysyz1/why_are_many_things_from_high_late_middle_ages/cfnj4dt"
]
] | |
84n30q | in the classical period, being homosexual seemed quite socially acceptable (just based on what i've seen from greeks and romans); why then did the bible have parts in it that discouraged homosexual relationships? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/84n30q/eli5_in_the_classical_period_being_homosexual/ | {
"a_id": [
"dvqr2u3"
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3
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"text": [
"The original text of the bible wasn't written by Greeks or Romans.\n\nEventually people tangentially related to the late Roman empire collected and translated various texts to compose the modern bible, but they didn't write it.\n\nThe various boo... | [] | [] | [
[]
] | ||
b7i3yh | why does the world appear faster at night? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/b7i3yh/eli5_why_does_the_world_appear_faster_at_night/ | {
"a_id": [
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2,
4
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"text": [
" > Ever since I was a kid I always felt like everything was faster at night.\n\nIt's all in your head. Things don't feel faster at night. This is your own subjective experience. There is nothing to explain.\n\n",
"Ne... | [] | [] | [
[],
[]
] | ||
6avo93 | What was the speed of glacial retreat prior to the 1900's? | I got into a discussion about climate change with a friend, and hes skeptical about the recent speed of glacial retreat being faster than the retreat prior to modern tracking methods.
Is there information about glacial retreat speeds prior to the 1900's?
Thanks! | askscience | https://www.reddit.com/r/askscience/comments/6avo93/what_was_the_speed_of_glacial_retreat_prior_to/ | {
"a_id": [
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"text": [
"There aren't a *lot* of measurements of glacier positions before the 1900s, but there are some. [This paper](_URL_0_) gives a great summary of all the available data. Figures 8 and 9 are particularly useful.\n\nBetween 1760 and 1800, 42 glacier... | [] | [] | [
[
"http://www.the-cryosphere.net/8/659/2014/tc-8-659-2014.pdf"
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aeprpc | Why in the history of Japan and Vietnam, many emperors chose to abdicate but retain their political power? | The abdicated emperors usually got the titles as Joko/Thượng Hoàng (上皇), or Hoo (法皇) for those becoming Buddhist monks. In many cases they are still the actual rulers and decision makers.
& #x200B;
While in the same Eastern Asian cultural sphere, in China and Korea this type of abdications are far less frequent. If ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/aeprpc/why_in_the_history_of_japan_and_vietnam_many/ | {
"a_id": [
"edt3a0p"
],
"score": [
7
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"text": [
" > What are the reasons causing such disparities? I guess for some cases, such abdications might be beneficial to the smooth transition of powers to their desired successors\n\nRight on the money!\n\nIn Japan the system of emperors \"abdicating,\... | [] | [] | [
[]
] | |
2k92w2 | studded tires vs winter tires. | Live near Calgary, Gmc Sierra RWD. I commute 100 km or so a day, inside and outside the city. Which tires should I get and why? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2k92w2/eli5_studded_tires_vs_winter_tires/ | {
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2,
2,
2
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"text": [
"Honestly if studded tires are allowed where you live get studded tires",
"Alaskan here. Not going to ELY5 because I'm no expert. However, I drove with winter tires on a front wheel drive sedan and ... | [] | [] | [
[],
[],
[]
] | |
ee7wfu | why is the severity of bad weather so different from when a cold front moves into a warm area, versus a warm front moving into a cold area? | A cold front tends to bring thunderstorms and tornadoes, but a warm front tends to bring moderate, longer lasting rainfall. Why? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ee7wfu/eli5_why_is_the_severity_of_bad_weather_so/ | {
"a_id": [
"fbssru3"
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"text": [
"Warm fronts tend to slide above the cold air they are pushing out. This means they have a long, horizontal, almost flat border. Since that border is what produces the clouds, the clouds are high up in the air, thin, flat and cover a vast area. ... | [] | [] | [
[
"https://www.vectorstock.com/royalty-free-vector/weather-fronts-vector-2569064"
]
] | |
2aci9s | why when guys pee it some times splits into a double stream? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2aci9s/eli5_why_when_guys_pee_it_some_times_splits_into/ | {
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19,
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"text": [
"sexytime fluids caught in the urethra. ",
"The pee hole isn't a perfectly round hole, under lower pressure the 2 middle parts can close leaving 2 smalle... | [] | [] | [
[],
[],
[
"https://www.youtube.com/watch?v=VY6PAkLG2p4",
"https://www.youtube.com/watch?v=XvsTmKzR-jM&feature=kp"
],
[],
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29he8k | When did people start seeing the Spanish Inquisition as a bad thing? How was it viewed while it was occuring? How about within & outside of Spain? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/29he8k/when_did_people_start_seeing_the_spanish/ | {
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"The Spanish Inquisition was seen as disadvantageous to Spanish political interests by the Spanish authority of Louisiana at least as early as 1789, about 300 years after it had be... | [] | [] | [
[],
[],
[],
[]
] | ||
d2widm | why or how videos on youtube differ so much in quality of image? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/d2widm/eli5_why_or_how_videos_on_youtube_differ_so_much/ | {
"a_id": [
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2,
2
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"text": [
"Some people have potato quality cameras, and some people have multi-thousand dollar 8K cameras and everywhere in-between. There is also lossy video compression (used to get a smaller video file size at a given resolution but... | [] | [] | [
[],
[]
] | ||
2gpcwf | What kind of headgear did ancient Incan Warriors really wear? | I'm reposting this since I asked this question a few weeks ago and didn't get an answer. If there's no answer this time, I'll just give up. Anyway, here's what I posted from the last time:
> Maybe this isn't a great question, but here it is anyway: If you google "Incan warrior", pretty much everything that comes... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2gpcwf/what_kind_of_headgear_did_ancient_incan_warriors/ | {
"a_id": [
"ckljyvn"
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"score": [
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"text": [
"I'm assuming you're talking about things like these? [1](_URL_6_), [2](_URL_2_), [3](_URL_7_) In actuality, they're not that far off from [Spanish](_URL_3_) drawings of [headgear.](_URL_0_) (Also see pages 104,106,110,112...) These are each Inca ... | [] | [
"http://en.wikipedia.org/wiki/Inca_army"
] | [
[
"http://www.kb.dk/permalink/2006/poma/100/en/image/?open=id2638881",
"http://www.sru.uea.ac.uk/documents/lau2004-caj.pdf",
"https://www.peruadventurestours.com/Images/inca_imagen.jpg",
"http://www.kb.dk/permalink/2006/poma/98/en/image/?open=id2638881",
"http://www.kb.dk/permalink/2006/poma/46/... | |
3nj1op | why does placing a plastic bag over a credit card help a device read its magnetic stripe better? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3nj1op/eli5_why_does_placing_a_plastic_bag_over_a_credit/ | {
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16y9qg | Why is it easier to open lids when you put in under hot water? | I was just wondering how come?
edit : Thanks everyone for your answers. I was really curious and I'm happy to finally know why. | askscience | http://www.reddit.com/r/askscience/comments/16y9qg/why_is_it_easier_to_open_lids_when_you_put_in/ | {
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"The simplest answer I can give you is that the lid is probably made of metal. Metals expand when exposed to heat, and therefore it's easier to open the lid from the jar. (Lid is now bigger than it used ... | [] | [] | [
[],
[],
[]
] | |
491zfq | what are the known psychological effects of long periods in space? | This is a line from a [Bloomberg Business article.](_URL_0_)
> The isolation carries psychological effects, among the most significant and most mysterious aspects of long periods in space. Understanding and ameliorating the psychological effects of extended missions will be critical to any future human exploration of... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/491zfq/eli5_what_are_the_known_psychological_effects_of/ | {
"a_id": [
"d0oiuj8",
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"score": [
3,
8
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"text": [
"Maybe [this article](_URL_0_) has something you're looking for.\n\n\n\nIsolation and hallucinations: the mental health challenges faced by astronauts",
"From the article it makes it look like bad psychological effects, h... | [] | [
"http://www.bloomberg.com/news/articles/2016-03-04/six-things-that-happen-to-you-after-a-year-in-space"
] | [
[
"https://www.theguardian.com/science/2014/oct/05/hallucinations-isolation-astronauts-mental-health-space-missions"
],
[
"https://en.wikipedia.org/wiki/Overview_effect"
]
] | |
9xcsng | why does stomach pain from a virus or food poisoning come in waves? | I’ve been struggling all day, and have just been wondering why the pain gets super intense for about 5 minutes, then stops pretty much all together for 10-20? What happens in those 10-20 minutes?
I’m certainly not complaining about those wonderful 10-20 minute breaks, just curious as to why. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9xcsng/eli5_why_does_stomach_pain_from_a_virus_or_food/ | {
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],
"text": [
"Many intestinal issues come in “spasms”, wich is a way your guts tell you there is something wrong. It is a short term activity spike (spasm) that we can feel.\n\nI believe this is because most of our digestive tract doesnt have that many nocicep... | [] | [] | [
[]
] | |
1fxbok | Concerning the Aurora on Saturn, what is generating the magnetic field of this planet is a Gas giant? (Video in comments) | Since we (Earth) have a molten core comprised of Iron constantly spinning as a giant electro magnet, what gives Saturn it's magnetic field? As since it's a Gas giant, how can Earth relate to it? (Similar properties and such?)
[Here is a video of the aurora](_URL_0_) | askscience | http://www.reddit.com/r/askscience/comments/1fxbok/concerning_the_aurora_on_saturn_what_is/ | {
"a_id": [
"caere7t"
],
"score": [
5
],
"text": [
"The source of the gas giants' magnetic fields is thought to be generated in the same way as the Earth's. Except that instead of molten iron generating the field, metallic hydrogen is thought to be responsible."
]
} | [] | [
"http://www.youtube.com/watch?v=7AmyfuJDMlY"
] | [
[]
] | |
1le9sx | can you "break" the hippocratic oath? if that's possible, does doing so prevent you from working as a physician? | Is it just a formal thing or does it bear weight?
I imagined it being something like lawyers being members of the bar, and can thus be dis-barred (?), but then again I'm probably way off. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1le9sx/eli5_can_you_break_the_hippocratic_oath_if_thats/ | {
"a_id": [
"cbycivw"
],
"score": [
2
],
"text": [
"It is more a formal thing that you can elect to take when you graduate but are not required to. _URL_0_\n\nYou can break it all you want, so long as doing so does not violate the standards of where you are working."
]
} | [] | [] | [
[
"http://en.wikipedia.org/wiki/Hippocratic_Oath#Modern_use_and_relevance"
]
] | |
a5hgfy | why did russia decide in the late 1500's to attempt to conquer siberia - an unimaginably large & frigid territory - which would increase the size of its kingdom by ~17x? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/a5hgfy/eli5_why_did_russia_decide_in_the_late_1500s_to/ | {
"a_id": [
"ebmk26w",
"ebmn38o",
"ebmn9l3",
"ebmnl86",
"ebmnsd1",
"ebmpb7i",
"ebmqjbz",
"ebmqls0",
"ebmr3w6",
"ebmryjk",
"ebms8y8",
"ebmt7x7",
"ebmxsu9",
"ebn1pjg",
"ebn2nzq",
"ebn341p",
"ebn5oxs",
"ebn9mqv",
"ebnc2gf",
"ebnel85",
"e... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Evacuation_in_the_Soviet_Union#Evacuation_of_industry",
"https://upload.wikimedia.org/wikipedia/commons/3/38/Europe_topography_map_en.png"
],
[],
[
"https://www.youtube.com/watch?v=HE6rSljTwdU"
],
[
"https://youtu.be/HE6rSljTwdU"
],
[],
[],
[]... | ||
44osx6 | what's the difference between an application and a server? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/44osx6/eli5_whats_the_difference_between_an_application/ | {
"a_id": [
"czrq8a0"
],
"score": [
6
],
"text": [
"Think of an application as another word for a program, or a piece of software. Microsoft Word is an application and so is the game of candy crush on your phone. \n\nA server is basically a computer that acts like a central repository of progra... | [] | [] | [
[]
] | ||
7ch5v8 | In the American South of the 1950s-1970s, was it typical for older men (in their 20s or older) to 'court' teenage girls? What were typical marriage ages and age gaps? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7ch5v8/in_the_american_south_of_the_1950s1970s_was_it/ | {
"a_id": [
"dpqh1ou",
"dpql77w"
],
"score": [
6,
460
],
"text": [
"Follow up question: were there similar trends across the rest of the United States at that time? ",
"The most famous example in the 1950s-1970s of a man from the American South 'courting' a teenage girl is of course th... | [] | [] | [
[],
[
"https://medium.com/cuepoint/ballad-of-the-13-year-old-bride-f909cbe1c6b4",
"http://people.com/archive/surviving-marriage-to-the-killer-vol-32-no-2/"
]
] | ||
2gp6m8 | What medicine was used by American field medics in WW2? Was it superior or inferior to other countries? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2gp6m8/what_medicine_was_used_by_american_field_medics/ | {
"a_id": [
"cklf5wz"
],
"score": [
2
],
"text": [
"You might be interested in [this previous answer I wrote](_URL_0_) which covers the importance of penicillin for the Allied war effort, especially compared to less effective sulphonamides the Germans used."
]
} | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/2a8v46/i_am_a_soldier_who_has_just_been_injured_in_world/cistlh0"
]
] | ||
9nbmig | why can only 2/3rd’s of a plastic be recycled? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9nbmig/eli5_why_can_only_23rds_of_a_plastic_be_recycled/ | {
"a_id": [
"e7l4b8k"
],
"score": [
4
],
"text": [
"Certain types of plastics, urethanes in particular, are chemically cured thermoset plastics which cannot simply be melted down to be re-formed into new shapes. \n\nThey do not melt but instead slowly degrade on heating to a variety of toxic compo... | [] | [] | [
[]
] | ||
liph4 | Can a single photon spontaneously split into two photons as long as momentum is conserved? | If so, is the frequency of such an event dependent on the energy of the photon? | askscience | http://www.reddit.com/r/askscience/comments/liph4/can_a_single_photon_spontaneously_split_into_two/ | {
"a_id": [
"c2t016u",
"c2t0300",
"c2t03ap",
"c2t0dgt",
"c2t0esm",
"c2t016u",
"c2t0300",
"c2t03ap",
"c2t0dgt",
"c2t0esm"
],
"score": [
2,
5,
2,
2,
2,
2,
5,
2,
2,
2
],
"text": [
"No it can't. ",
"While the photon is the exc... | [] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Spontaneous_parametric_down-conversion",
"http://en.wikipedia.org/wiki/Pair_production",
"http://www.nature.com/news/2010/100728/full/news.2010.381.html"
],
[],
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Spontaneous_parametric_down-conversion"... | |
4gfmdl | why do tortilla chips not come in individual-sized bags? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4gfmdl/eli5_why_do_tortilla_chips_not_come_in/ | {
"a_id": [
"d2h480c",
"d2h5gg2",
"d2h5naq",
"d2h74w2"
],
"score": [
32,
2,
4,
3
],
"text": [
"Because regular tortilla chips are a bit too bland and dry to eat by themselves and are mostly consumed at parties or a home environment, where they can be dipped in salsa.",
... | [] | [] | [
[],
[],
[
"http://www.amazon.com/Garden-Eatin-Tortilla-Chips-Ounce/dp/B000EQYQBO",
"http://www.staples.com/Tostitos-Crispy-Rounds-Tortilla-Chips-3-oz-Bags-28-Bags-Box/product_364548"
],
[]
] |
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