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 |
|---|---|---|---|---|---|---|---|---|---|
bjiddw | Is it possible for a planet to consist solely of liquid as opposed to a solid or a gas? If no, why not? | askscience | https://www.reddit.com/r/askscience/comments/bjiddw/is_it_possible_for_a_planet_to_consist_solely_of/ | {
"a_id": [
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2,
2
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"text": [
"Yes, Jupiter might even be one. Even if it is not then other gas giants could be formed by gravitational instability in which there is no solid core (at least at the early stages but there are processes... | [] | [] | [
[],
[],
[]
] | ||
a0sqid | what’s the difference between forging and casting metals? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/a0sqid/eli5_whats_the_difference_between_forging_and/ | {
"a_id": [
"eak3exs",
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"score": [
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3
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"text": [
"Forging involved hammering soft heated metal into the shape you want. Casting is pouring liquid metal into a mould and letting it cool.",
"Casting doesn’t have grain structure, which makes it weaker than something that i... | [] | [] | [
[],
[
"https://www.google.co.in/search?q=casting+vs+forging+diagram&rlz=1CDGOYI_enUS668US668&oq=casting+vs+forging+diagram&aqs=chrome..69i57.9462j0j9&hl=en-US&sourceid=chrome-mobile&ie=UTF-8#imgrc=r2WmrYqINwi1SM"
]
] | ||
1xggz7 | How did the role of the artist differ before the Renaissance and during the Renaissance? | I have a general idea of the differences of roles between pre-Renaissance and Renaissance artists; however, I'm hoping that my knowledge can be expanded on. At what point did artists go from being commissioned by the Church only and rarely being given credit by name to being commissioned by patrons, achieving fame and ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1xggz7/how_did_the_role_of_the_artist_differ_before_the/ | {
"a_id": [
"cfbl2vn"
],
"score": [
3
],
"text": [
"I wouldn't say that, even by the High Renaissance, artists had that much freedom over their subject matter. It was still very much a matter of the patron's (whether it be royalty, church, or private) will. The more well-known artists had a bit mo... | [] | [] | [
[]
] | |
28fxlu | what are the horizontal part (sleepers?) of a railway track for? and why can some sections of track not have them | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/28fxlu/eli5_what_are_the_horizontal_part_sleepers_of_a/ | {
"a_id": [
"ciajptg",
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"text": [
"They hold the rails at a fixed distance - without them, the trains would push them apart. If the railroad is built on concrete or other solid material (e.g. a railway crossing, or railroads in cities) then they're not needed... | [] | [] | [
[],
[]
] | ||
76wxin | why do android phones get slower over time even after a factory reset? | Often the common complaint would be of cache, data or new updated apps, but I've seen them get slower than a brand new phone even without any updated apps. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/76wxin/eli5why_do_android_phones_get_slower_over_time/ | {
"a_id": [
"dohbkyd"
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"score": [
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"text": [
"This is just speculation tbh.\n\n\nOver time, the same applications on your phone consume more resources. This is because the rate technology improves is swift, and application devs are constantly keeping up. So say an app is currently built to ... | [] | [] | [
[]
] | |
f3xssm | when a computer says "scan and repair"; how does it repair? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f3xssm/eli5_when_a_computer_says_scan_and_repair_how/ | {
"a_id": [
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"text": [
"One other thing is repair tools are designed to implement a set of fixed “scripts/instructions” known to solve common problems. You can consider the scan and repair program to be a collection of known fixes that attempt to run and repair your sys... | [] | [] | [
[]
] | ||
1ub19z | judges and what happens to them after their rulings are repeatedly overturned. | So I see all the time judges making rulings and a higher court overturning them. Some judges more than others seem to have their rulings more frequently overturned than others, usually due to poor judgement of the first ruling.
What happens to judges who frequently make bad rulings? Do they face a review board or anyt... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ub19z/eli5_judges_and_what_happens_to_them_after_their/ | {
"a_id": [
"cegcugd",
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"score": [
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2,
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],
"text": [
"Alright, I'll try my best to explain it. \n\nFirst of all, law is a murky subject. There are many ways the same piece of law could be read by different people. Often the judge who has his opinion ove... | [] | [] | [
[],
[],
[]
] | |
2qpii4 | - does gritting the road harm the environment? surely a massive increase in salt would alter the natural soil composition and harm the surrounding area/ecosystem? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2qpii4/eli5_does_gritting_the_road_harm_the_environment/ | {
"a_id": [
"cn89kpe",
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"score": [
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2,
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],
"text": [
"It does, yes, and for the exact reasons you mentioned too. The problem is, that the best alternative to salt is to use sand instead, but that doesn't get rid of the ice and also has to swept away again ... | [] | [] | [
[],
[],
[]
] | ||
tr0ts | Why don't animals like dogs and cats recognize and understand what music is? | askscience | http://www.reddit.com/r/askscience/comments/tr0ts/why_dont_animals_like_dogs_and_cats_recognize_and/ | {
"a_id": [
"c4p2cr1",
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"score": [
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"text": [
"i used to play guitar when i was younger, and my dog would sit in front of me like she was listening.\n\nnot sure why though...",
"Animal's ears are very different to our own, music simply probably sounds completely diff... | [] | [] | [
[],
[]
] | ||
a9x9ka | If gravity is the effect of space-time being stretched, wouldn't an object's angular momentum generate gravitational effects? | I'm thinking mainly of things like planets, stars, and black holes, and how their angular momentum stretches space-time. I'm wondering if this is an explanation for why most things celestial have prograde orbits. | askscience | https://www.reddit.com/r/askscience/comments/a9x9ka/if_gravity_is_the_effect_of_spacetime_being/ | {
"a_id": [
"ecnsfx9",
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"score": [
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"text": [
"Yes. This is mainly a thing for spinning black holes, although the gravitational effects of the Earth's rotation has been measured by a very precise satellite experiment called [Gravity Probe B](_URL_0_). However, this isn'... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Gravity_Probe_B"
],
[
"https://en.m.wikipedia.org/wiki/Frame-dragging",
"https://en.m.wikipedia.org/wiki/Gravitoelectromagnetism"
]
] | |
3otjwb | Why was the Qin more effective than the other Chinese states during the Warring States Period? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3otjwb/why_was_the_qin_more_effective_than_the_other/ | {
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"text": [
"Qin was more effective from the middle Warring States onwards. They weren't always more effective.\n\nThat being said I would say the reasons are: \n1) Qin's land was fertile. It wasn't (originally) as populous, but Qin took over the heartland o... | [] | [] | [
[]
] | ||
5d7c4l | how to win radio station call-in contests? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5d7c4l/eli5_how_to_win_radio_station_callin_contests/ | {
"a_id": [
"da2cp2h",
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"score": [
2,
2
],
"text": [
"If its a small station call just before the end of the announcement, if its a large station call as soon as possible. \n\nAt a small station the announcer answers their own calls, at a large station a producer or panelist wi... | [] | [] | [
[],
[]
] | ||
6nbmjn | why certain fruits and veggies taste crunchier after they're chilled | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6nbmjn/eli5_why_certain_fruits_and_veggies_taste/ | {
"a_id": [
"dk88c7l"
],
"score": [
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],
"text": [
"the fibrous cell structures within the plants become more rigid when they are cold. that rigidity gives them additional \"crispyness.\"\n\nit is similar to if you were to take a foam bed and turn the heat off in the room. the bed becomes much fir... | [] | [] | [
[]
] | ||
wd79w | Does the shape of a lightning bolt have an effect on the sound of the thunder? | Primarily if we were to graph a bolt of lightning and compare it the the levels recorded to that associated roll of thunder, would we see a correlation?
What if the sound were graphed in a 3D space? How different is a forked lighting bolts' thunder VS the thunder from a bolt with no forks?
Does this make sense? | askscience | http://www.reddit.com/r/askscience/comments/wd79w/does_the_shape_of_a_lightning_bolt_have_an_effect/ | {
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"text": [
"The jagged and irregular shape of a lightning bolt is one thing that causes thunder to rumble. Different points all along the lightning bolt are different distances from your ears and thus the sounds a... | [] | [] | [
[],
[
"http://www.answerbag.com/q_view/336095"
],
[]
] | |
5t4pjp | it's said that a single strand of dna contains roughly 4 megabytes of information. how exactly do they know this and how are bytes convertible to something physical like base pairs? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5t4pjp/eli5_its_said_that_a_single_strand_of_dna/ | {
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"ddk4kpt",
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"score": [
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"text": [
"A bit is a binary digit. A byte is an 8 digit number, in binary.\n\nIn decimal, a ten digit number could represent a high count of something, or each digit could have it's own significance. For example,... | [] | [] | [
[],
[],
[
"http://bitesizebio.com/8378/how-much-information-is-stored-in-the-human-genome/"
]
] | ||
2sedmd | why if the distance between two objects can always be halved, do they ever touch other? | Let's say I drive my car towards a wall. I am 10 meters away from it, half that distance to 5m, 2.5m, 1.25m, 0.625m etc. Surely I should never be able to touch it?
Numbers can get infinitely smaller, so does this not apply to physical distances?
Or is there a physical distance that cannot be made smaller?
From my ma... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2sedmd/eli5why_if_the_distance_between_two_objects_can/ | {
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16,
8,
3,
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"text": [
"In theory if you keep cutting the distance between two objects in half, they will not meet. I'm not sure what you are asking about tho... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | |
41bkww | why do the facebook accounts of dead people or people who have not logged on in years all of a sudden start spamming sales for sunglasses? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/41bkww/eli5why_do_the_facebook_accounts_of_dead_people/ | {
"a_id": [
"cz15z38"
],
"score": [
7
],
"text": [
"My guess is since the password never changes anymore some bot brute forces the password and takes over the account."
]
} | [] | [] | [
[]
] | ||
dgxks8 | why are some fairly modern commercial aircraft built with propeller engines instead of jets? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dgxks8/eli5_why_are_some_fairly_modern_commercial/ | {
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"text": [
"Propeller aircraft are usually less expensive for the same size and slightly more fuel efficient, although slower. Makes for a compelling argument for shorter... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
f7fkrs | Was homosexuality bad in the eyes of old celtic/Norse beliefs? | I’m not saying they had to *love* the idea, but was it tolerable? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/f7fkrs/was_homosexuality_bad_in_the_eyes_of_old/ | {
"a_id": [
"fiexgqy"
],
"score": [
7
],
"text": [
"EDIT : u/sunagainstgold's answer on [homosexuality and its perception in medieval Scandinavia](_URL_0_) is certainly interest you on the other part of your question.\n\nWe have litterary evidence that ancient Celts (i.e. more or less people we wo... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/5vb166/how_did_pagan_vikings_in_the_813th_centuries_view/de1bo9q/",
"https://www.reddit.com/r/AskHistorians/comments/7lnrh5/how_common_was_homosexuality_or_what_wed_now_see/drptkm5/"
]
] | |
3n7cgr | how were languages created? did we just get better at grunting? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3n7cgr/eli5_how_were_languages_created_did_we_just_get/ | {
"a_id": [
"cvli4am",
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"cvllq27",
"cvllvof",
"cvlm0hx",
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"cvlmgmj",
"cvlmoqd",
"cvlndm0",
"cvlooou",
"cvlpypl",
"cvlr4du",
"cvls3ti",
"cvluzgn",
"c... | [] | [] | [
[],
[],
[],
[
"https://en.wikipedia.org/wiki/Origin_of_language"
],
[
"http://www.americanscientist.org/issues/pub/1999/2/the-gestural-origins-of-language/1"
],
[],
[],
[],
[
"https://en.wikipedia.org/wiki/Language_family"
],
[],
[],
[],
[],
[],
[
"https://www.youtu... | ||
aldva3 | why does your average sport player not get the serious injuries commonly suffered by professionals? | Why do I not rupture my anterior cruciate ligament playing football in the park? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/aldva3/eli5_why_does_your_average_sport_player_not_get/ | {
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"text": [
"Probably just because professionals do it way more often and probably way more intensely than you. Lots of high school sports players get injured frequently.",
"Your average s... | [] | [] | [
[],
[],
[],
[]
] | |
244jk5 | Does the amount or heaviness of the falling rain affect the sound of thunder? | askscience | http://www.reddit.com/r/askscience/comments/244jk5/does_the_amount_or_heaviness_of_the_falling_rain/ | {
"a_id": [
"ch3pwx4"
],
"score": [
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"text": [
"heavy rain (heavy water) adsorbs sound energy a at a rate √3 x F greater than light water (deuterium). thunder is mostly in the 20-50hz range, so at 100% relative humidity\n, we might expect thunder to be heard at about twice the range in light r... | [] | [] | [
[]
] | ||
1m69rq | When we talk about previous ice ages, how widespread was the cold? Did it cover the whole planet? | askscience | http://www.reddit.com/r/askscience/comments/1m69rq/when_we_talk_about_previous_ice_ages_how/ | {
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"text": [
"There have been a number of \"Ice Ages\" of varying severity. \n\n > probably the most severe [\"Ice Age\"] of the last billion years, occurred from 850 to 630 million years ago... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Ice_age#Major_ice_ages",
"http://en.wikipedia.org/wiki/Snowball_Earth",
"http://en.wikipedia.org/wiki/Quaternary_glaciation"
],
[
"www.jamstec.go.jp/frsgc/research/d5/jdannan/LGM_temp.pdf",
"http://i.imgur.com/4D1bnDE.png"
],
[],
[
"http://www.clim-... | ||
5taus9 | how do usb/hdmi/displayport keep getting faster? | Are they making new discoveries? If so what are they? Or are they simply making thicker cables?
Eg.
HDMI 2.0 -- > HDMI 2.1 went from 18Gbit/s to 48Gbit/s
USB 3.0 -- > USB 3.1 went from 5Gbit/s to 10Gbit/s
DisplayPort 1.2 -- > 1.3 went from 17.28 Gbit/s to 32.4Gbit/s
This was last look at [5 years ago](_URL_0_... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5taus9/eli5how_do_usbhdmidisplayport_keep_getting_faster/ | {
"a_id": [
"ddlidkd"
],
"score": [
3
],
"text": [
"Improvements in various things. For example in HDMI the speed increase is associated with a higher clock rate. Much like faster processors increased in Mhz, and into Ghz.\n\nHDMI Max Clock frequency to Data throughput\n\n - HDMI 1.0 - 1.2: 165... | [] | [
"https://www.reddit.com/r/explainlikeimfive/comments/lgbas/how_were_they_able_to_increase_the_speed_of_usb/"
] | [
[
"http://www.bluejeanscable.com/articles/hdmi-2-1-cable-48g.htm"
]
] | |
3qyfno | how is work outsourced to other countries without massive outrage from the outsourcing country? | Obviously in the 40s the USA relied heavily on their own industrial needs due to war, yet 70 yrs later the textile industry is nearly all centered in Asia. I understand the cost of cheap labor but how was there not a riot over people losing their jobs/industry? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3qyfno/eli5how_is_work_outsourced_to_other_countries/ | {
"a_id": [
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"cwjjksq"
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"score": [
2,
10,
2,
2
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"text": [
"Because of the cheaper prices. If a company can pay people less, then the price of their product can be reduced. That's not to say there is no outrage - it's just limited to the w... | [] | [] | [
[],
[],
[],
[]
] | |
1n0mkw | Is there chemisrty in degenerate matter? | By degenerate matter I mean matter, where the electrons can't orbit the nuclei and the strong force dominates, please correct me if that's wrong. | askscience | http://www.reddit.com/r/askscience/comments/1n0mkw/is_there_chemisrty_in_degenerate_matter/ | {
"a_id": [
"ccecsec",
"ccedn6s"
],
"score": [
3,
2
],
"text": [
"I'm not sure if I understood correctly. But you can find [degenerated matter](_URL_0_) - or fermion gas - in white dwarfs for example. And of course there are processes happening inside these stars that may create/change/de... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Degenerate_matter"
],
[]
] | |
146cvo | gene mapping, and the human genome project. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/146cvo/eli5_gene_mapping_and_the_human_genome_project/ | {
"a_id": [
"c7aejn7"
],
"score": [
6
],
"text": [
"**TL;DR - I freaking love biochemistry and explaining things**\n********\n\n**Explained Simply** \n\nYou have DNA, which is a mixture of 4 chemical \"bases\", known as Cytosine (C), Guanine (G), Thymine (T) and Adenine (A). DNA itself is made of ... | [] | [] | [
[]
] | ||
1rmydo | What occurred in Luxembourg and Liechtenstein during the World Wars? | These two little nations are often forgotten about, so I'm curious as to what happened when all Hell broke loose on their doorsteps... twice. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1rmydo/what_occurred_in_luxembourg_and_liechtenstein/ | {
"a_id": [
"cdowpk6"
],
"score": [
22
],
"text": [
"1/2\n\n**Luxembourg, First World War**\n\n\nLuxembourg was [invaded and occupied by Germany](_URL_0_) during the First World War.\n\nBeing able to move their army through Luxembourg, as well as Belgium, was a key part of the Moltke-Schlieffen Pl... | [] | [] | [
[
"http://en.wikipedia.org/wiki/German_occupation_of_Luxembourg_in_World_War_I"
]
] | |
5j26us | why is snow soft | If snow is just frozen water why does it not rain chunks of ice | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5j26us/eli5_why_is_snow_soft/ | {
"a_id": [
"dbcseb9"
],
"score": [
2
],
"text": [
"Moisture in the atmosphere is water vapor. When the temperature is low enough, the molecules of water condense but also freeze simultaneously in ice crystal structures rather than forming together into a water droplet THEN freezing (which would o... | [] | [] | [
[]
] | |
27clee | How much more or less brutal were the Germans in Russia than the Russians were in Germany at the end of world war II? | I've been reading John Toland's "The Last 100 Days" and others of the same subject lately, and in many passages in the books, they mention the extreme brutality that was shown for women in general by rear area troops in the Soviet military throughout the territory they liberated and how the Germans basically brought th... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/27clee/how_much_more_or_less_brutal_were_the_germans_in/ | {
"a_id": [
"chzk2u4"
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"score": [
5
],
"text": [
"The German occupation was significantly more brutal, considering Germany suffered some million or so civilian casualties from all military actions (including those of the western allies,) compared to the 8-12 million inflicted in the Soviet Union... | [] | [] | [
[]
] | |
3ztcvm | why do motorcycles redline at ~14 k rpm, but most everyday cars redline at ~7 k rpm | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3ztcvm/eli5_why_do_motorcycles_redline_at_14_k_rpm_but/ | {
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97,
42,
3,
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2
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"text": [
"Small parts can move faster, and motorcycle engines usually have a short stroke. They are generally optimized for maximum horsepower,... | [] | [] | [
[],
[],
[],
[],
[],
[
"https://www.reddit.com/r/motorcycles/comments/2np6hc/whyhow_do_motorcycle_engines_run_at_much_higher/"
]
] | ||
mdp66 | How long could a person survive eating only human flesh? | It is a common topic in post-apocalyptic movies - The Book of Eli for example, but particularly The Road - that the surviving humans predate on each other to survive (and to create dramatic tension I suppose). Besides the obvious lack of different nutrients I was wandering if "rabbit starvation syndrome" would play out... | askscience | http://www.reddit.com/r/askscience/comments/mdp66/how_long_could_a_person_survive_eating_only_human/ | {
"a_id": [
"c3047pv",
"c3047pv"
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"score": [
3,
3
],
"text": [
"I realize this shouldn't be a top-level comment, but since no one's posted I will. I went to the wiki page for rabbit starvation syndrome, and it said it was from a lack of fat in your diet. Humans are pretty fatty, so it ... | [] | [] | [
[],
[]
] | |
cx0il2 | why do people cook with alcohol, is it just for flavour, if so then can't you just use non-alcoholic substitutes? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cx0il2/eli5_why_do_people_cook_with_alcohol_is_it_just/ | {
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"text": [
"Ya, it's just for flavor, and you could use non alcoholic substitutes, but it wouldnt taste the same, and If you just make sure you cook off the alcohol it wo... | [] | [] | [
[],
[],
[],
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[]
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4bdlux | what kind of video editing software to big movies such as harry potter use? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4bdlux/eli5_what_kind_of_video_editing_software_to_big/ | {
"a_id": [
"d185gyt"
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"score": [
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"text": [
"Final Cut X is actually not Final Cut 10, just \"X\". It is a dumbed down, consumer version of the glorious Final Cut 7 which Apple abandoned years ago, which was used on many feature films. \n\nThe old standard, Avid, is still a big one. Howe... | [] | [] | [
[
"http://filmship.net/2013/11/19/the-craft-of-editing-interview-with-mark-day-editor-for-the-bbc-and-feature-films-incl-harry-potter-and-about-time/"
]
] | ||
279e9a | why do i sound on pitch when i'm singing but when i listen to a recording i'm horrible? | So I like to make music with a variety of insturments, and have recently wanted to try my hand at singing. So I was singing along to a track and sounded pitch perfect while actually singing it. But once I listened to the recording it was totally off. Am I just tone deaf? Or is there some sort of strange pitch changing ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/279e9a/eli5_why_do_i_sound_on_pitch_when_im_singing_but/ | {
"a_id": [
"chymi3k",
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"score": [
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18
],
"text": [
"You \"hear\" your own voice through vibrations in your jaw bone and skull as well as external soundwaves, which creates a different sound than if it was exclusively soundwaves (which is what you hear from a recording). That... | [] | [] | [
[],
[]
] | |
2ic301 | With all this fear mongering about Ebola, how about facts. How could a virus like Ebola become airborne, what mutation would be necessary? | askscience | http://www.reddit.com/r/askscience/comments/2ic301/with_all_this_fear_mongering_about_ebola_how/ | {
"a_id": [
"cl0uwlg",
"cl0uzca"
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"score": [
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2
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"text": [
"It is difficult to say specifically for ebolavirus. To know precisely which mutation would be necessary to confer airborne transmission would require gain-of-function experiments such as those conducted on the H5N1 avian fl... | [] | [] | [
[
"https://www.reddit.com/r/science/comments/2hvslq/science_ama_series_hello_i_am_prof_marc_lipsitch/",
"http://www.sciencemag.org/content/336/6088/1534.full",
"http://www.nejm.org/doi/full/10.1056/NEJMoa1411100?query=featured_ebola#t=abstract"
],
[]
] | ||
34rsh1 | regarding nasa's new "warp" discovery: how does a warp open? | As something that is not technically physical, how do physical objects/energy "open" a warp? And if warps move matter around it then how does a laser get into it? This is all considering it actually is a warp bubble and not a misunderstood discovery. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/34rsh1/eli5_regarding_nasas_new_warp_discovery_how_does/ | {
"a_id": [
"cqxib3a",
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"score": [
6,
4
],
"text": [
"I think you're confused. Nasa's newest piece of technology is the EMDrive. It doesn't create warp bubbles but years ago some guy in a garage said \"hey, I can accelerate this thing without using propellant!\" but was treated... | [] | [] | [
[],
[]
] | |
2tfxf2 | how is it that otherwise seemingly normal people can become so invested in a sports team that they're willing to make it a huge part of their identity, up to the point of rioting should their team lose? | I've never been able to grasp the idea that one can identify themselves as part of a sports team (American football in particular) despite not having ANY involvement with said team. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2tfxf2/eli5_how_is_it_that_otherwise_seemingly_normal/ | {
"a_id": [
"cnypo47"
],
"score": [
3
],
"text": [
"I did research on this in college for psychology. Turns out the more invested in outside events, especially sports the lower the self esteem of the individual. Now having a healthy relationship with a sports team is ok and being happy or disapp... | [] | [] | [
[]
] | |
6qdq7a | why are there hd versions of tv channels? why not just replace the original channel with the hd version? | Surely if something is in HD, it was recorded that way originally. I'm not aware of anyone that has a TV incapable of HD now.
If its just a rip off thing, wouldnt it be a good idea to make laws banning this practice? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6qdq7a/eli5_why_are_there_hd_versions_of_tv_channels_why/ | {
"a_id": [
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"score": [
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"text": [
" > Surely if something is in HD, it was recorded that way originally. \n\nCorrect.\n\n > If its just a rip off thing\n\nIt's not a \"rip-off\" thing. It's a \"people are willing to pay less for standar... | [] | [] | [
[],
[],
[]
] | |
3ni7fr | why is it called a 'cold' when you're body is actually hot? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3ni7fr/eli5_why_is_it_called_a_cold_when_youre_body_is/ | {
"a_id": [
"cvob14t",
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"score": [
4,
5
],
"text": [
"Your*, my bad.",
"Have you noticed that you *feel* cold when your running a fever? It's sometimes called \"the chills\".\n\nPart of the sensation of temperature is the *difference* between the room's temperature and your... | [] | [] | [
[],
[]
] | ||
1ilsif | factorials | I have a kind of intuitive understanding of what addition and multiplication are doing. When I add 4 and 3, I'm combining a pile of four widgets with a pile of three widgets. When I multiply 4 and 3, I am putting together three piles of four widgets each.
What is going on when I do 4!? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ilsif/eli5_factorials/ | {
"a_id": [
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"score": [
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"text": [
"You're counting how many ways you can arrange things.\n\nSay you have 4 cards. How many possible ways can you order those cards?\n\nThere are 4 possibilities for the first card, 3 for the second, 2 for the third, and one for... | [] | [] | [
[],
[]
] | |
3usvww | why are some noises "louder" than others? | This sounds stupid, but sometimes when I'm watching TV with the volume constant, certain noises can be heard in the hallway of my building while the rest can't. I thought it was a sound mixing thing but I'm not so sure as sometimes it's the odd sounds like bangs of doors rather than shouting in the show.
Are these so... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3usvww/eli5_why_are_some_noises_louder_than_others/ | {
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"cxhijw8",
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"score": [
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"text": [
"Well, volume or loudness is the amplitude of the sound wave and if its bigger the sound will be louder. But in terms of hearing things in your apartment certain sounds are more lik... | [] | [] | [
[],
[],
[],
[]
] | |
34s9hu | why do batteries have a 'use by' date, and what could be the result of using it after that date? | This was actually asked by my 10-year-old sister, changing the batteries in a disco ball in her room. She asked me, and then I realised that I didn't have an answer for her! | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/34s9hu/eli5_why_do_batteries_have_a_use_by_date_and_what/ | {
"a_id": [
"cqxljf6"
],
"score": [
2
],
"text": [
"Because there's a chemical reaction going on all the time inside the battery, it can burn itself out if not used for a certain length of time."
]
} | [] | [] | [
[]
] | |
1gcvq7 | why is jimi hendrix considered one of the greatest guitar players? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1gcvq7/eli5_why_is_jimi_hendrix_considered_one_of_the/ | {
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"http://www.youtube.com/watch?v=6gwLQAuHJv8"
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"http://reddit.com/comments/1gcvq7/_/cajca28",
"http://youtu.be/-yPEewaalik",
"http://reddit.com/comments/1gcvq7/_/caj7juh",
"http://y... | ||
f814no | How are Tourniquets usually removed if they have been on for a while but so that the limb can still be saved? | [deleted] | askscience | https://www.reddit.com/r/askscience/comments/f814no/how_are_tourniquets_usually_removed_if_they_have/ | {
"a_id": [
"fimantn"
],
"score": [
3
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"text": [
"In a operating room, slowly so as not to cause bursting of capalaries(sp?). Up to 6 hours from initial application of the tourniquet the limb can be mostly saved (depends on the damage done) this is from memory from military training."
]
} | [] | [] | [
[]
] | |
43zoqu | david camerons deal with the eu | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/43zoqu/eli5david_camerons_deal_with_the_eu/ | {
"a_id": [
"czm91h1"
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"score": [
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"text": [
"Cameron told the EU he would stop promoting a \"Brexit\" if they made reforms in 4 certain areas. Yesterday Donald Tusk (president of the European Council) released a draft trying to find a compromise between Cameron and the EU. Here's what these... | [] | [] | [
[]
] | ||
6cy13b | What Medieval War Strategy Book Should I Read? | Hi, I recently started watching Game of Thrones, and through that fell into a phase of wanting to learn phycology, philosophy, and actual tactics of Medieval War. I was wondering what some not crazy difficult book recommendations "I'm a Highschooler" would be on Medieval War Strategy that is a good fun read "or audiobo... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6cy13b/what_medieval_war_strategy_book_should_i_read/ | {
"a_id": [
"dhyuoah"
],
"score": [
2
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"text": [
"I recommend the following five works as the rock on which to build your understanding of medieval warfare. They are not all easy to read, *Warfare in Medieval Europe 400-1453* is particularly dense, but they will all add to your understanding of ... | [] | [] | [
[]
] | |
1t4uxh | why is pneumonia diagnosed with an x-ray? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1t4uxh/eli5_why_is_pneumonia_diagnosed_with_an_xray/ | {
"a_id": [
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"score": [
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"text": [
"On X-ray, things that are not dense (like air) are dark. The radiation passes right through air and none of it is \"blocked\" on the way to the film. When no X-rays get blocked, the film is black. Things that are white on ... | [] | [] | [
[],
[]
] | ||
qnoj0 | Do people digest less when they have the runs? | So, if somebody eats some food that gives them insta-diarrhea, does their body have time to absorb the nutrients/use the calories of that food or does is pass through less digested?
In an extreme case: if someone had chronic diarrhea (and for the thought experiment's sake, lets ignore the dehydration issue), would the... | askscience | http://www.reddit.com/r/askscience/comments/qnoj0/do_people_digest_less_when_they_have_the_runs/ | {
"a_id": [
"c3z2nnb"
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"score": [
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"text": [
"You lose a lot of nutrients when you have 'the runs' mainly because bacterial infections which cause the symptom of 'the runs' alter cellular pathways such as the cAMP pathway in gut epithelia, which in the short form, leads to efflux of water ou... | [] | [] | [
[]
] | |
bokkjq | Bremsstrahlung and General Relativity: Does a charge resting on the surface of earth emit radiation? |
The Standard Model treats gravity as a force like any other while General Relativity models gravity not as a force, but as the curvature of spacetime.
A consequence of the latter is, that free-falling objects are force-free and their acceleration, defined as the covariant derivative of their four-velocity, is zero. ... | askscience | https://www.reddit.com/r/askscience/comments/bokkjq/bremsstrahlung_and_general_relativity_does_a/ | {
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4,
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"text": [
"It depends on the frame of reference. A charge at rest on the Earth does not appear to radiate as seen by other at-rest observers on the Earth, but a freefalling observer would see a charge-at-rest rad... | [] | [] | [
[],
[
"https://pdfs.semanticscholar.org/92f4/497561d3ba67a3027a19a28f1010fcbb12d4.pdf&ved=2ahUKEwjtpbzqz5viAhVQQ6wKHXpZD5kQFjABegQIAhAB&usg=AOvVaw03bgYajDKMUAwA5fPx369T&cshid=1557857644180"
],
[
"https://en.m.wikipedia.org/wiki/Paradox_of_radiation_of_charged_particles_in_a_gravitational_f... | |
1g5gb6 | what is smoke, exactly? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1g5gb6/eli5_what_is_smoke_exactly/ | {
"a_id": [
"cagwc3r"
],
"score": [
12
],
"text": [
"Steam, unburnt gases, particles of ash."
]
} | [] | [] | [
[]
] | ||
4tk363 | Do light particles weigh anything? | If they do, does a collective of particles exert a strong enough force to push an object. How much of a force does our sun exert on humans? | askscience | https://www.reddit.com/r/askscience/comments/4tk363/do_light_particles_weigh_anything/ | {
"a_id": [
"d5i032m"
],
"score": [
16
],
"text": [
"No, photons are massless.\n\nHowever, massless particles can still have momentum and exert a force. In the case of the sun and the earth, this pressure is between 4.5 and 9 micro-Newtons per square meter (4.5 if photons are absorbed entirely, 9 ... | [] | [] | [
[]
] | |
17dh9k | why does time go from 11 am to 12 pm and vice versa? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/17dh9k/why_does_time_go_from_11_am_to_12_pm_and_vice/ | {
"a_id": [
"c84hc0g"
],
"score": [
6
],
"text": [
"AM stands for ante meridiem and PM stands for post meridiem - before noon and after noon. Noon is the point at which the sun is highest in the sky. In the AM, the sun is rising. In the PM, it is setting."
]
} | [] | [] | [
[]
] | ||
7s2jq0 | Are there any disagreements between English and U.S historians on any facts/aspects of the American Revolution? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7s2jq0/are_there_any_disagreements_between_english_and/ | {
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213,
714,
72
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"text": [
"Hi there! \n\nIf you've come to the thread and are wondering why there's no answer yet, please be patient: [we have found](_URL_4_) that it takes an average of 9 hours for a good answer to appear o... | [] | [] | [
[
"https://www.reddit.com/r/dataisbeautiful/comments/64y44g/the_mostupvoted_comments_in_reddit_threads_arent/#",
"https://www.reddit.com/r/RemindMeBot/comments/24duzp/remindmebot_info/",
"https://www.reddit.com/r/AskHistorians/wiki/rules#wiki_sources",
"http://www.reddit.com/r/AskHistorians/search?q... | ||
a8oa7c | - how does the body fight infections not in the bloodstream such as respiratory infections? | Sitting here hacking stuff out of my lungs and suddenly wondering what mechanisms the body uses to get bacteria and virus fighting cells to the site of action in cases with say, an infection in your lungs or sinuses? I’m sure the mucus collects a lot of the bacteria to be jettisoned our but the immune system still need... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/a8oa7c/eli5_how_does_the_body_fight_infections_not_in/ | {
"a_id": [
"eccat7f",
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"score": [
2,
2
],
"text": [
"Cells like neutrophils can leave the bloodstream to fight infections like that. Mucosal sites can also fight infection with a special antibody called IgA.",
"When foreign cells like viruses are detected by local immune c... | [] | [] | [
[],
[]
] | |
2tcf20 | if muscle growth is them tearing and re-growing tissue, why can't we invent a machine or procedure that artificially replicates this tearing in order to build up muscle mass without actually working out? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2tcf20/eli5_if_muscle_growth_is_them_tearing_and/ | {
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"score": [
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13,
... | [] | [] | [
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"http://depletedcranium.com/belgianblue.jpg"
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[],
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"http://daily.barbellshrugged.com/3-things-you-dont-know-about-muscle/"
],
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[],
[],
[],
[],
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3olxp8 | why don't all the mosquitos die out when it gets to cold? do some of them fly south or what? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3olxp8/eli5_why_dont_all_the_mosquitos_die_out_when_it/ | {
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3,
2,
2
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"text": [
"It depends on the species but they use one or more of three strategies to survive the winter:\n\n*Hibernation as an Adult - Females will drop their metabolic rate and survive off stored fat, usually hid... | [] | [] | [
[],
[],
[
"https://www.reddit.com/r/explainlikeimfive/search?restrict_sr=on&sort=relevance&t=all&q=mosquitoes%20winter"
]
] | ||
3ata56 | Why "666" for the beast? Without a base-10 positional representation system, this number wouldn't look particularly remarkable. | Was the original number of the beast from the bible actually six hundred and sixty six? Note that without a base-10 representation system, this number wouldn't actually even have anything to do with the number 6. In original translations, is given in Roman numerals, or what? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3ata56/why_666_for_the_beast_without_a_base10_positional/ | {
"a_id": [
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"score": [
114,
21,
46,
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"text": [
"I can't tell you much about the numerological implications of the number and the interpretation of Johannes, but I'm going to say something about Roman numbers that might be he... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Oxyrhynchus_Papyri"
],
[],
[]
] | |
1uedfq | This question has been stewing for a bit. If a neutrinos pass through our body all of the time, then what happens when one actually collides with the atoms of our bodies? | I have been doing some reading on neutrinos (they are my favorite elementary particle) and read that if our eyeballs are the size of a watermelon then we could see the resulting collision of a neutrino and water. I have always wondered: what happens when one actually collides with the constituents of our bodies? Can we... | askscience | http://www.reddit.com/r/askscience/comments/1uedfq/this_question_has_been_stewing_for_a_bit_if_a/ | {
"a_id": [
"cehjkh3",
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"score": [
3,
5
],
"text": [
"I too am a big fan of neutrinos. Neutrinos can interact with many subatomic particles. Most of the interactions would be wither a scatter or possibly an absorption. The probability of these events happening are very small... | [] | [] | [
[],
[]
] | |
2hfff2 | how do police evidence videos end up online? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2hfff2/eli5_how_do_police_evidence_videos_end_up_online/ | {
"a_id": [
"cks4n6n"
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"score": [
3
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"text": [
"Sometimes leaked but you can usually get them through the freedom of information act unless it is pending investigation or prosecution."
]
} | [] | [] | [
[]
] | ||
bqrp67 | There are Churches older than the Byzantine and Roman Catholic: How does their interpretation of Doctrine and Religious practice differ and why? Did these Churches interact with the Roman and Byzantine Churches further into the Medieval, or did they lose contact? | So I was watching Diarmaid Macolluch's History of Christianity BBC program, and he mentioned some older churches (such as the ethiopian). What sort of Doctrine did these churches stick to that led to them to split from the Christian Jews? Was there any communication between the members of these organizations with the... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/bqrp67/there_are_churches_older_than_the_byzantine_and/ | {
"a_id": [
"eo7z6m9",
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"score": [
16,
3
],
"text": [
"I hope no one minds an Eastern Orthodox deacon commenting? \n\n\nThe Churches you mention are known as the Oriental Orthodox churches, and are not, in fact, older than the Byzantine and Latin churches. In fact, they split ... | [] | [] | [
[
"https://books.google.nl/books?id=6IUaOOT1G3UC&printsec=frontcover&dq=council+of+chalcedon+book&hl=en&sa=X&ved=0ahUKEwjq5MD3gqriAhWHDewKHWAVBZ4Q6AEIKDAA"
],
[]
] | |
2akzlh | How exactly was the French Revolutionary Army able to defend France from being invaded by a coalition consisted of every European country, and also end up expanding French territory? | The revolution was killing the French economy, and caused massive famines and widespread chaos within the nation. Their troops were poorly equipped, and lacked the discipline and organization of the professional armies of their neighbors.
They were attacked by.......
The entire Holy Roman Empire.
The British.
The ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2akzlh/how_exactly_was_the_french_revolutionary_army/ | {
"a_id": [
"ciw8z2l",
"ciwardw"
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"score": [
807,
12
],
"text": [
"I'd like to point to [this post I made a few days ago](_URL_0_) for reference.\n\nNotably this bit: \n\n > All men between the ages of 18 and 25 were to be forcibly conscripted for military service -- all men. Men into t... | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/29tqot/say_im_a_farmer_in_1791_france_and_the_revolution/ciolxd6?context=3"
],
[]
] | |
6svvwl | why is facebook considered such a large company when it seems like the site itself is dying out? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6svvwl/eli5_why_is_facebook_considered_such_a_large/ | {
"a_id": [
"dlfy35n"
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"text": [
"It might just be regional, because I only know a couple of people who *don't* use Facebook. Facebook chat seems like the primary method of communication for a lot of people, or is at least tied with texting. I also see a lot of people and organiz... | [] | [] | [
[]
] | ||
29qe1r | . why can't we fill our coal mining pits with our rubbish? we are taking out one pollutant and replacing it with another. | As above. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/29qe1r/eli5_why_cant_we_fill_our_coal_mining_pits_with/ | {
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"text": [
"You start storing waste underground and you need to be damn sure there's no groundwater movement that can leach waste into drinking water. That is not possible in the vast majority of mine systems as t... | [] | [] | [
[],
[],
[]
] | |
27nwa2 | what are einstein's two main postulates on special relativity, and what are the relativistic consequences of their effects? | I read about the laws before, but I've never fully understood them, or the consequences they have on spacetime. I want to get a grasp on the workings of Einstein's brilliant theory.
The postulates I am referencing to are the 'Relativity Principle' and the 'Principle of the Constancy of the Speed of Light'. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/27nwa2/eli5_what_are_einsteins_two_main_postulates_on/ | {
"a_id": [
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"text": [
"Einstein's theory of relativity states that time and velocity are relative to an observers point of view, or reference frame. His special theory is called such because it deals only with inertia reference frames which are reference frames that ha... | [] | [] | [
[
"https://www.youtube.com/watch?v=kGsbBw1I0Rg",
"https://www.youtube.com/watch?v=ajhFNcUTJI0",
"http://www.pitt.edu/~jdnorton/teaching/HPS_0410/chapters/Special_relativity_clocks_rods/figures/light_clock_anim_2.gif",
"https://www.youtube.com/watch?v=ScAeYKWf3qU",
"https://www.youtube.com/watch?... | |
5xlips | why in the military do some people get the best medical care in the country at places like walter reed while other military personnel and veterans get awful horrible care at va hospitals? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5xlips/eli5_why_in_the_military_do_some_people_get_the/ | {
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"text": [
"A lot has to do with where and when your injured.\n\nActive duty and in combat: If it's sever enough you'll go to Walter Reed, otherwise you'll be in a different military hospital, some excellent, some... | [] | [] | [
[],
[],
[
"https://www.sciencedaily.com/releases/2016/02/160209121532.htm",
"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2838151/"
]
] | ||
14oeqe | Is a rain (snow?) of carbon dioxide possible in Antarctica? | Wikipedia says that temperature in Antarctica can be less than -80 °C. Carbon dioxide boils at -57 °C and melts at -78 °C, but I've never heard anything about such rain (snow). Is it possible or it isn't because of some reasons? | askscience | http://www.reddit.com/r/askscience/comments/14oeqe/is_a_rain_snow_of_carbon_dioxide_possible_in/ | {
"a_id": [
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"text": [
"It's cold enough, but there is very little CO2 in the atmosphere. You can't look at the sublimination point at 1 atm because the partial pressure of CO2 is much lower. The low partial pressure of carbon dioxide would cau... | [] | [] | [
[],
[
"http://stevengoddard.files.wordpress.com/2010/09/co2_phase_diagram.gif"
]
] | |
3l3mmu | what is web api and what is it used to accomplish? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3l3mmu/eli5_what_is_web_api_and_what_is_it_used_to/ | {
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"text": [
"An API is a defined way for one person's code to interact with another person's code. \"Web API\" means an API that uses the standard systems of the world wide web to interact with each other. For example, you can see reddit's API documentation [... | [] | [] | [
[
"https://www.reddit.com/dev/api"
]
] | ||
cppwmc | What are ideal situations for the creation of stalactites or stalagmites? | Basically the title. I have an idea in my head that it would be kinda cool to set up a tube in my room to slowly grow a stalactite/mite. At the moment the idea is an airtight tube, at 100% humidity and a mesh that has high calcium water drip slowly onto it. Since it's such a slow process though, it would be quite hard ... | askscience | https://www.reddit.com/r/askscience/comments/cppwmc/what_are_ideal_situations_for_the_creation_of/ | {
"a_id": [
"ewr7j3d"
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"score": [
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"text": [
"Quite a lot has been published and I'll list some papers below which will be of interest to you but essentially, everything comes down to a chemical equilibrium between carbonate and calcium^i ions on one side, and calcium carbonate (limestone), ... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Speleothem"
]
] | |
yn04g | How has modern infantry equipment evolved? | I remember seeing a graphic a while back showing that it cost only about $150 to outfit a WWII infantry man but it costs close to $20,000 now. How did it grow to cost that much in only 70 years? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/yn04g/how_has_modern_infantry_equipment_evolved/ | {
"a_id": [
"c5x8pgl",
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"score": [
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"text": [
"Soldier and amateur military historian here. \n\nFirst we need to talk about load type. Depending on the time frame of resupply and mission. They break down in the following:\n\nFighting Load- Everything a soldier needs ... | [] | [] | [
[],
[]
] | |
aqwkrs | Has the Earth expanded over the last 3 billion years and is it still? | askscience | https://www.reddit.com/r/askscience/comments/aqwkrs/has_the_earth_expanded_over_the_last_3_billion/ | {
"a_id": [
"egj8yfd",
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"text": [
"The expanding Earth or growing Earth hypothesis asserts that the position and relative movement of continents is at least partially due to the volume of Earth increasing. Conversely, geophysical global cooling was the hypoth... | [] | [] | [
[],
[
"https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2011GL047450"
]
] | ||
363z7e | Length of Wehrmacht Deployments in World War II? | I just watched the German World War II miniseries [Generation War](_URL_0_), and the two brothers serving in the Heer seemed to serve on the Eastern Front from the invasion until the end of the war.
How long did Wehrmacht deployments last? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/363z7e/length_of_wehrmacht_deployments_in_world_war_ii/ | {
"a_id": [
"crb8z2s"
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"score": [
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"text": [
"Well, to quote Kipling: \"There is no discharge in the war!\"\nYou didn't go on deployment in the Wehrmacht, you were entitled to, under the best of circumstances, two weeks of leave twice a year (for the Field Army/ combat troops) or once a year... | [] | [
"http://www.imdb.com/title/tt1883092/"
] | [
[]
] | |
c9h61c | how come after a cia or military operation gets declassified the files say “redacted” for certain things? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/c9h61c/eli5_how_come_after_a_cia_or_military_operation/ | {
"a_id": [
"esy8069",
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6,
13
],
"text": [
"Because there are still secret aspects of the file that cannot be revealed to the public. A file doesn't have to be 100% declassified to be \"declassified\", if that makes sense - it just means that i... | [] | [] | [
[],
[],
[]
] | ||
6i95fc | how come is it incredibly hard for me to get back in shape at age of 45? | Getting back to shape used to be extremely easy. The reasons for slipping were many - too much work, too much stress, having kids. I used to always be able to get back in shape relatively easily. Fat out, muscles back, getting to running condition came relatively easily in 2-3 weeks.
Somewhere around the age of 40 I n... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6i95fc/eli5_how_come_is_it_incredibly_hard_for_me_to_get/ | {
"a_id": [
"dj4ekpx",
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],
"score": [
4,
2
],
"text": [
"This is going to get removed but here it is:\n\nFiber is the key. Fiber and water. You have to poop a lot. That's it.",
"Its a cumulative effect. Testosterone loss is a huge cause of weight gain and the ability to los... | [] | [] | [
[],
[]
] | |
3v4riw | god rays; why they give the impression the sun is only just above the clouds | Everyone's seen [god rays](_URL_1_) coming through the clouds in the right weather conditions. What I'd like to get my head around is why in situations like [this](_URL_2_) and [this](_URL_0_) you get the distinct impression that the sun isn't millions of miles away across the black of space, but probably about as high... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3v4riw/eli5_god_rays_why_they_give_the_impression_the/ | {
"a_id": [
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"text": [
"_URL_0_\n\n > Despite seeming to converge at a point, the rays are in fact near-parallel shafts of sunlight, and their apparent convergence is a perspective effect (similar, for example, to the way that parallel railway lines seem to converge at... | [] | [
"https://c2.staticflickr.com/6/5482/11801850965_05aa00e2a5_b.jpg",
"http://www.carpelux.net/sites/www.carpelux.net/files/images/_IGP9942.jpg",
"http://s-ak.buzzfed.com/static/enhanced/terminal01/2011/4/25/17/enhanced-buzz-24705-1303768458-0.jpg"
] | [
[
"https://en.wikipedia.org/wiki/Crepuscular_rays"
]
] | |
18rka2 | why do public domain books cost money on app stores? | Why would I have to pay 4.00 for "The Man Who was Thursday"
_URL_1_
if I may read it freely on Project Gutenburg?
_URL_0_
Does making something into an e-book cost a lot of money even though it is already available online? Why does it cost money there, but not elsewhere?
when I can get it off of project Gutenberg fo... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/18rka2/why_do_public_domain_books_cost_money_on_app/ | {
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4,
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"text": [
"They sell it to people who don't know it is in public domain or don't know where to find it for free.",
" > Does making something into an e-book cost a lot of money even thoug... | [] | [
"http://www.gutenberg.org/ebooks/1695",
"https://play.google.com/store/books/details?id=-Y9q3j81KcUC"
] | [
[],
[],
[],
[]
] | |
2lc5g9 | How did life evolve to snakes? What was the natural selection? | askscience | http://www.reddit.com/r/askscience/comments/2lc5g9/how_did_life_evolve_to_snakes_what_was_the/ | {
"a_id": [
"cltocel"
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"text": [
"Snakes share a common ancestor with modern lizards, which was a legged lizard. Apparently some species actually benefitted from losing their legs, which is where natural selection comes in.\n\n[Certain modern lizards](_URL_0_) provide good exampl... | [] | [] | [
[
"http://imgur.com/Jw8xDNH"
]
] | ||
280pvf | what is motivation? i mean what is going on in the brain when somebody gets motivation or has motivation? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/280pvf/eli5_what_is_motivation_i_mean_what_is_going_on/ | {
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"score": [
465,
10,
... | [] | [] | [
[],
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"http://www.bjfogg.com/",
"http://www.gamasutra.com/blogs/BenLewisEvans/20130827/198975/Dopamine_and_games__Liking_learning_or_wanting_to_play.php"
],
[],
[
"http://faculty.sdmiramar.edu/faculty/sdccd/kpetti/bio160/MiscImages/SagittalFar.jpg"
],
[
"http://i.imgur.com/wp... | ||
soh00 | How would the daily life of the common man be different if Einstein hadn't made his discoveries? | And no one else had to this point. I know why relativity is important, but I'm not sure why it's immediately relevant to everyday life. Can I get some help? | askscience | http://www.reddit.com/r/askscience/comments/soh00/how_would_the_daily_life_of_the_common_man_be/ | {
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"c4fn9g8",
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3,
2,
2,
2
],
"text": [
"A quantum mechanical understanding of materials was necessary to develop the transistor and the entire computer revolution that came from it.",
"The most... | [] | [] | [
[],
[],
[],
[],
[]
] | |
6jpmsi | why do the cups of water i set out at night end up with bubbles and a "stale" taste in the morning? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6jpmsi/eli5_why_do_the_cups_of_water_i_set_out_at_night/ | {
"a_id": [
"djg3k3v"
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"score": [
5
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"text": [
"The bubbles have something to do with the oxygen being gassed out especially if the water is cold, since cold water holds more oxygen. And the taste is CO2 being dissolved in the water over the period of time which creates a chemical compound H₂C... | [] | [] | [
[]
] | ||
61r0s5 | why can't we upgrade our smartphones like we do on personal computers? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/61r0s5/eli5_why_cant_we_upgrade_our_smartphones_like_we/ | {
"a_id": [
"dfglq69"
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"score": [
9
],
"text": [
"Smartphones are very small. They are built with components that have to fit very tightly together, otherwise there either won't be room inside the case, or the components might interfere with each other, or the heat dispersal won't be effective a... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Modular_smartphone"
]
] | ||
y4kgv | Does a person's body still become rested if only laying down instead of completely asleep? | Sometimes I have trouble getting to sleep and I tell myself (so there isn't that much pressure to fall asleep) that if I just lay down and relax in bed with my eyes closed, my body will still obtain rest. Or does this not matter?
I will be happy to provide further insight on my situation. | askscience | http://www.reddit.com/r/askscience/comments/y4kgv/does_a_persons_body_still_become_rested_if_only/ | {
"a_id": [
"c5scsyw",
"c5seuva"
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"score": [
52,
2
],
"text": [
"The effects of sleep are primarily related to brain function, and that recuperation does not happen from just laying down all night. If you actually needed a physical break then that would help (but chances are you probably... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Hypnagogia"
]
] | |
7ce93w | how does sequence and separation of files in the deletion process of the computer work? | The other day I deleted a folder on my computer by accident. After a short dumbfounded three seconds the deletion process was interrupted by pressing cancel. But the process had already deleted one file of the folder. So two things I wonder about: How does the computer decide what to delete first? what gives the comput... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7ce93w/eli5_how_does_sequence_and_separation_of_files_in/ | {
"a_id": [
"dpp9ndh",
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"score": [
4,
2
],
"text": [
" > How does the computer decide what to delete first?\n\nTypically the delete command will assume that the sequence does not matter, so it just uses the most easily or quickly available one. Most likely, it will just call a ... | [] | [] | [
[],
[]
] | |
3h5imf | what is really the difference between high end sunglasses (like ray-bans) and cheap sunglasses (like some from walmart) | I know that the brand influences the price, but what are the actual differences from expensive vs non-expensive sunglasses? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3h5imf/eli5_what_is_really_the_difference_between_high/ | {
"a_id": [
"cu4ecc8",
"cu4edt5",
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"score": [
6,
7,
8
],
"text": [
"The integrity of the materials used in the high-end glasses is much higher compared with the low-end. If you just try on a pair of high-end sunglasses at the store the difference is very noticeable.",
... | [] | [] | [
[],
[],
[]
] | |
6ip56k | if left alone, will the debris in space around earth coalesce into a ring, if so how long 'til it happens? | If it were to form a ring is there enough debris that the ring would be visible from earth? If a ring is the natural form for orbital debris would it be easier to Clean NEO by encouraging it to form a ring rather then trying to get rid of it... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6ip56k/eli5if_left_alone_will_the_debris_in_space_around/ | {
"a_id": [
"dj81hv9"
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"score": [
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"text": [
"The manmade satelites that aren't in a graveyard orbit will eventually reenter the atmosphere and burn up. Eventually the ones in the graveyard orbit will too but that will be quite a while. There isn't enough matter currently orbiting the earth ... | [] | [] | [
[]
] | |
cicv4h | if the earth’s crust is so thin relative to the thickness of the core and mantle, how come we don’t feel all that heat? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cicv4h/eli5_if_the_earths_crust_is_so_thin_relative_to/ | {
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"score": [
11,
6,
2
],
"text": [
"\"Relatively thin\" is still 20-30 miles of rock on average for continental crust. That's a lot of padding between us and the heat.",
"We do.\n\nHowever, the minor constant heat exuding from the co... | [] | [] | [
[],
[],
[
"https://www.youtube.com/watch?v=bWswq8PmRII",
"https://www.youtube.com/watch?v=DF_J3vCcbBA",
"https://upload.wikimedia.org/wikipedia/commons/8/82/Pahoehoe_toe.jpg"
]
] | |
6ninf0 | Do we have any proofs that "Armenian Genocide" was intentional? | This is a sensitive topic, so I want to make it clear that I have no bad intentions. I don't have an opinion on Armenian Genocide, I know that my country (Poland) recognizes it as a real genocide, but recently I met a Turk who described me the other side of the story. Now I just want to put everything together.
"Conve... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6ninf0/do_we_have_any_proofs_that_armenian_genocide_was/ | {
"a_id": [
"dka5r21",
"dkbs1ox"
],
"score": [
2,
2
],
"text": [
"In short, yes. [This section] (_URL_0_) of the FAQ may be helpful.",
"Never heard of accidental genocides. Do they exist? "
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/wiki/faq/europe#wiki_the_armenian_genocide"
],
[]
] | |
1wsdss | Why were the international soldiers who participated in the Spanish Civil War, to fight fascism, upon return home (to the US and Canada to be more precise) investigated by their nations and not allowed to serve in WWII? | I was doing some reading this afternoon about all of the international soldiers who left their homes, from places in Europe and the Americas to help the Spanish people against fascism.
Interestingly enough, Canadians and Americans were investigated by the FBI and Mountie Police for their war collaboration, and in both... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1wsdss/why_were_the_international_soldiers_who/ | {
"a_id": [
"cf5643d"
],
"score": [
2
],
"text": [
"What books or what were you reading that said that? There were definitely soldiers who served the Abraham Lincoln Brigade who then served in WW2 for America. \n\nHere's one example: _URL_0_\n"
]
} | [] | [] | [
[
"http://hermannbottcher.org/"
]
] | |
53n89r | does the expansion of the universe have any measurable effects on smaller scales? | From what I understand, the universe is expanding so that everything is getting further from everything. Does this mean that the moon is getting further from the earth? Am I further from my computer screen than when I first started typing this? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/53n89r/eli5does_the_expansion_of_the_universe_have_any/ | {
"a_id": [
"d7uipak"
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"score": [
3
],
"text": [
"If by smaller scales you are talking about superclusters of galaxies then yes, there is a small measurable effect. However even the short distance between the Milky Way and Andromeda is too short for the expansion of the universe to be measurable... | [] | [] | [
[]
] | |
2jkb6t | why we hear about new cancer treatments, but patients still just get surgery, chemo, and radiation? | My aunt was recently diagnosed with pancreatic cancer, a particularly deadly form of cancer. They recommended she go on chemo.
It seems like every day we hear about new treatments, discoveries, and breakthroughs with cancer. But it seems that every body who gets it, just gets chemo and radiation. That's same thing ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2jkb6t/eli5_why_we_hear_about_new_cancer_treatments_but/ | {
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2,
2,
2,
3
],
"text": [
"Because some therapies don't work on the cancer, just like some drugs don't work. For example, my mom also has Pancan (stage IV - was given six months to live... | [] | [] | [
[],
[
"http://www.smbc-comics.com/?id=1623"
],
[],
[],
[]
] | |
d728xu | Did Native American tribes who supported the Confederacy suffer any specific repercussions for this alliance? | Did the US government strip away any land rights from these groups, for instance, or were all Native nations treated with equal violent racism? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/d728xu/did_native_american_tribes_who_supported_the/ | {
"a_id": [
"f0xmmzp"
],
"score": [
3
],
"text": [
"I touch on the fallout some in [this broader answer](_URL_0_) which may be of interest."
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/achn2i/how_were_native_americans_impacted_during_the/"
]
] | |
1trko4 | why can we tell if a bill (currency) is fake or not/ | So there's a bunch of ways to check the authenticity of a bill. You can use a special marker which will come out black on fake bills. The texture of the bill. The watermark. etc.
So why don't the people that make counterfeits make it so the counterfeit have all those features? The only explanation that makes sense to ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1trko4/eli5_why_can_we_tell_if_a_bill_currency_is_fake/ | {
"a_id": [
"cear586",
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"score": [
2,
4
],
"text": [
"It's because making some of those special authenticating things require very specific materials and tools which are not commercially available. That means that when a person tries to make a counterfeit bill, he/she needs to ... | [] | [] | [
[],
[]
] | |
5lrbf0 | why are drug stores selling products that have a disclaimer saying "no approved therapeutic claim"? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5lrbf0/eli5_why_are_drug_stores_selling_products_that/ | {
"a_id": [
"dbxupdo",
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2
],
"text": [
"The simple answer: There's a demand for said products.\n\nThere's a demand for those products, even if there is no proof that the products actually work.\n\nThere are tons of people using treatments tha... | [] | [] | [
[],
[],
[]
] | ||
7gwq7j | why having a diet high in salt is bad for your heart | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7gwq7j/eli5_why_having_a_diet_high_in_salt_is_bad_for/ | {
"a_id": [
"dqmb0b5",
"dqngnsq"
],
"score": [
30,
3
],
"text": [
"Simple explanation given to me I'm on a heart medication and diuretic (increased peeing = water and sodium levels decreased in blood) \n\nSodium is a known to cause fluid retention aka the more sodium you take in the more w... | [] | [] | [
[],
[]
] | ||
tygrj | Is there any scientific evidence to prove that each individual perceives everything the same? | Its a bit of a mindfuck but i have been wondering about this for a while. How do we know if everyone sees the world the same. How do i know that i see the colour blue as blue whereas you may see it as green. How do we know that say for instance, when someone speaks to me there is a part of my brain that translates it f... | askscience | http://www.reddit.com/r/askscience/comments/tygrj/is_there_any_scientific_evidence_to_prove_that/ | {
"a_id": [
"c4qu2c0",
"c4qucb9"
],
"score": [
3,
17
],
"text": [
"Wittgenstein's [private language argument](_URL_0_) might be interesting to you. That, and of course the vast literature following it.\n\n**Edit:** Better link.",
"Actually, there is very good reason to believe that whi... | [] | [] | [
[
"http://plato.stanford.edu/entries/private-language/"
],
[
"http://imgs.xkcd.com/blag/satfaces_map_1024.png"
]
] | |
1er5sh | When a computer screen is cracked at one spot, why does the entire screen no longer work? | From what I've seen, when a computer's LCD screen cracks, all the pixels around the cracks turn completely black while everything else goes completely white. Why does that happen? Under what circumstances will a part of the screen not be effected? | askscience | http://www.reddit.com/r/askscience/comments/1er5sh/when_a_computer_screen_is_cracked_at_one_spot_why/ | {
"a_id": [
"ca2z8qw"
],
"score": [
18
],
"text": [
"Pixels turn completely white (transparent) when you switch them off. When your screen cracks a conductor that is wired in series is severed, thus pixels are powered off while background light keeps running. The black blotch is the result of mess... | [] | [] | [
[]
] | |
4j47ol | How in God's Name was Prohibition Ratified in the United States? | Considering how widespread alcohol consumption was in the early 1900s; and how popular alcohol has been, pretty much since it was discovered. How could prohibition possibly have been democratically passed in the United States? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4j47ol/how_in_gods_name_was_prohibition_ratified_in_the/ | {
"a_id": [
"d33ktjv",
"d33r5gw"
],
"score": [
5,
5
],
"text": [
"It's easy to look back and wonder what they were thinking, I agree. Temperance advocates had various advantages. There does seem to have been enormous enthusiasm, a deep conviction among the Temperance forces that banning al... | [] | [] | [
[],
[]
] | |
1tw5qz | How do wild animals get rid of fleas? | Or do once they get one, they continue to get more as they breed and are covered in them?
I know hippos and other animals cover themselves with dirt or mud to keep insects away, but what about deer /wolves /big cats ect....?
I would hate to think that it's possible for a wolf pup to get fleas when just a few months... | askscience | http://www.reddit.com/r/askscience/comments/1tw5qz/how_do_wild_animals_get_rid_of_fleas/ | {
"a_id": [
"cecjzww"
],
"score": [
13
],
"text": [
"Almost every wild animal will host a wide variety of parasites for its entire life. Some of these are relatively innocuous - for example [eyelash mites](_URL_3_) in humans. Some are much [less pleasant](_URL_2_).\n\nIntestinal worms are very com... | [] | [] | [
[
"http://parasitology.com/",
"https://en.wikipedia.org/wiki/Parasitology",
"https://en.wikipedia.org/wiki/Parasitic_castration",
"https://en.wikipedia.org/wiki/Demodex"
]
] | |
5tnxne | Why didnt the civil war have armor? Wasn't close quarters fighting common? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5tnxne/why_didnt_the_civil_war_have_armor_wasnt_close/ | {
"a_id": [
"ddnt1gd"
],
"score": [
6
],
"text": [
" > **Why didnt the civil war have armor?**\n\nThe American Civil War did see many experiments in body armor; Bashford Dean in [Helmets and Armor in Modern Warfare](_URL_1_) 58-59 notes:\n\n > It is known that breastplates were worn more or less... | [] | [] | [
[
"http://americanhistory.si.edu/blog/2013/04/failed-objects-bullet-proof-vests-and-design-in-the-american-civil-war.html",
"https://archive.org/details/helmetsbodyarmor00deanuoft",
"http://www.worldcat.org/title/of-arms-and-men-a-history-of-war-weapons-and-aggression/oclc/476010542"
]
] | ||
13ha4m | Why did France grant Monaco independence in 1861? | There was a bit of trading of territory going on - but why was Monaco even given leeway to trade given their seemingly insignificant power as compared to France?
| AskHistorians | http://www.reddit.com/r/AskHistorians/comments/13ha4m/why_did_france_grant_monaco_independence_in_1861/ | {
"a_id": [
"c742edw"
],
"score": [
3
],
"text": [
"A very similar question was just asked a few days ago, you may want to search for answers here:\n_URL_0_"
]
} | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/13ebo4/how_have_the_microsmall_states_of_europe_andorra/"
]
] |
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