q_id stringlengths 5 6 | title stringlengths 0 304 | selftext stringlengths 0 39.2k | document stringclasses 1
value | subreddit stringclasses 3
values | answers dict | title_urls dict | selftext_urls dict | answers_urls dict | split stringclasses 9
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1tvwzu | Why "crazy people" have that distinctive look to their eyes | Whenever you meet / see someone with their eyes "wide open" all the time - meaning, you can see the whites of their eyes around the entire perimeter of the iris, it's virtually a guarantee that they are severely mentally unstable. The Sandy Hook and Aurora shooters are very obvious recent examples of this, but it occu... | explainlikeimfive | {
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"In many psychotic individuals, the wide eyed look is because of their inten... | {
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} | train_eli5 | Why "crazy people" have that distinctive look to their eyes
Whenever you meet / see someone with their eyes "wide open" all the time - meaning, you can see the whites of their eyes around the entire perimeter of the iris, it's virtually a guarantee that they are severely mentally unstable. The Sandy Hook and Aurora sho... | [
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790u7d | The NASA twin study. I know what it is. Just explain their findings. Like I'm 5. Years old. Thanks. | explainlikeimfive | {
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} | train_eli5 | The NASA twin study. I know what it is. Just explain their findings. Like I'm 5. Years old. Thanks.
| [
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1ay4wb | What is the point of money? | I don't understand how money works. It's physically almost completely worthless until we write a number on it and then it becomes worth that. We are just giving a worthless item an imaginary unit that everyone decides to follow. It just seems confusing to me. | explainlikeimfive | {
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} | train_eli5 | What is the point of money?
I don't understand how money works. It's physically almost completely worthless until we write a number on it and then it becomes worth that. We are just giving a worthless item an imaginary unit that everyone decides to follow. It just seems confusing to me. | [
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3kvf2v | Why does charge build up in a cloud? | Coulds are formed because of water evaporation which is a phenomenon at the molecular level. But charge is accumulation of electrons. So how does evaporation lead to charge build up? What happens in the cloud to result in this? | explainlikeimfive | {
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"Bits of dust stick to the water or float through the air. The dust and water rubs against each other and every time they do, some electrons get passed from one to the other. Then the particles wander off again before the electrons get passed back. This goes on enough... | {
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} | train_eli5 | Why does charge build up in a cloud?
Coulds are formed because of water evaporation which is a phenomenon at the molecular level. But charge is accumulation of electrons. So how does evaporation lead to charge build up? What happens in the cloud to result in this? | [
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lehsx | the hypothetical turtle on an island in the sun question? | Heard about it today. Thought someone on here might be able to explain it to me better than my friend. | explainlikeimfive | {
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"I *think* what you are taking about is a test from the book \"Do Androids Dream of Electric Sheep\" on which the film \"Blade Runner\" was based.\n\nIf so, the test aims to distinguish humans from androids ('replicants') thro... | {
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} | train_eli5 | the hypothetical turtle on an island in the sun question?
Heard about it today. Thought someone on here might be able to explain it to me better than my friend. | [
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91fex6 | how does a home equity loan work? | And how long after buying a house or condo do you typically have to wait to get one? | explainlikeimfive | {
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} | train_eli5 | how does a home equity loan work?
And how long after buying a house or condo do you typically have to wait to get one? | [
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6s1tut | In English, what is the rule for the use of “An” or “A” | [removed] | explainlikeimfive | {
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"An is used for words that start with a vowel sound.\n\nExamples,\n\nAn owl, an hour, an eight, an apple, an onion.\n\nA is used for all others.",
"It has nothing to do with meaning. It has to do with how the word sounds. If a word starts with a vowel ... | {
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} | train_eli5 | In English, what is the rule for the use of “An” or “A”
[removed] | [
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6igjw4 | Why do we have two small nostrils and not one larger nostril? | explainlikeimfive | {
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"It's usually not noticeable unless you sniff harshly, but one nostril is usually more open and free-flowing than the other. \n\nThe nostril that's closed usually swaps back and forth after several hours throughout the day. When a nostril is more closed, i... | {
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} | train_eli5 | Why do we have two small nostrils and not one larger nostril?
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z10qg | Border Gateway Protocol (BGP) | I know this is the routing protocol that is used on the internet. Everyone keeps telling me it's super complicated and advanced. Could anyone explain it in simple terms for me? For example, how does it differ from interior gateway protocols? Why is it effective for the internet? | explainlikeimfive | {
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"I stumpled across this subreddit and saw this and said, what an excellent chance for me to jump in for once.\n\nI am a network Engineer.\n\nBGP is a very, very complex routing protocol that the entire internet pretty much runs on.\n\nI don'... | {
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} | train_eli5 | Border Gateway Protocol (BGP)
I know this is the routing protocol that is used on the internet. Everyone keeps telling me it's super complicated and advanced. Could anyone explain it in simple terms for me? For example, how does it differ from interior gateway protocols? Why is it effective for the internet? | [
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8qqob8 | Why do car rims appear to be rotating backwards after a car accelerates? | [removed] | explainlikeimfive | {
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"/r/flooey is partially correct. That is the reason wheels appear to move backwards on film. This effect can be leveraged with a stroboscope [for an odd illusion](_URL_0_) even in real life, by imitating the film effect and only allowing your eyes to see individual 'fram... | {
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} | train_eli5 | Why do car rims appear to be rotating backwards after a car accelerates?
[removed] | [
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5inzg9 | How the heck do authorities determine who started a massive fire in the middle of the woods somewhere? | For example: _URL_0_
How on *earth* would they track it to those two people?
Edit: Thanks for all the info, and no I'm not planning to start a fire. That's a really weird thing to ask. I will never understand you Reddit. | explainlikeimfive | {
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} | {
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"http://missoulian.com/news/state-and-regi... | train_eli5 | How the heck do authorities determine who started a massive fire in the middle of the woods somewhere?
For example: _URL_0_ How on *earth* would they track it to those two people? Edit: Thanks for all the info, and no I'm not planning to start a fire. That's a really weird thing to ask. I will never understand you Redd... | [
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1rv694 | How do film/tv productions handle deaths of actors? Examples? | I know that multiple actors replaced Heath Ledger in The Imaginarium of Dr. Parnassus but I've never seen it. | explainlikeimfive | {
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"Usually it leaves them scrambling. I know when John Ritter died they actually had to write that death into \"8 Simple Rules\".",
"It depends on the situation, how much the actor has already shot, if it's a... | {
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} | train_eli5 | How do film/tv productions handle deaths of actors? Examples?
I know that multiple actors replaced Heath Ledger in The Imaginarium of Dr. Parnassus but I've never seen it. | [
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4hdmlp | Does the Sound Increase in Real Life when Someone on Television Increases the Sound? | I was watching the Incredibles the other day and Mr. Incredible increased the sound on his radio. I was watching it with earbuds on my laptop and I felt like the sound increased in my earbuds but I think that isn't how it works? Can someone explain this phenomenon to me?
Edit: Okay thank you guys. Sorry if my question... | explainlikeimfive | {
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"The volume control on your laptop or speakers essentially controls the loudest volume you can get - anything that tries to be louder can be distorted. But anything quieter than that is possible.\n\nSo what might be happening in the movie is that the radio might start at... | {
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} | train_eli5 | Does the Sound Increase in Real Life when Someone on Television Increases the Sound?
I was watching the Incredibles the other day and Mr. Incredible increased the sound on his radio. I was watching it with earbuds on my laptop and I felt like the sound increased in my earbuds but I think that isn't how it works? Can so... | [
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2umj9j | What would happen if all the countries wiped all the debt incurred by and owed to each other? | explainlikeimfive | {
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"Not an expert in the topic but I have some knowledge\n\nDebt isn't necessarily a bad thing as it represents a flow of money. This is why the average lifestyle in America is comfortably more lavish than those of in China. This is made possible because Amer... | {
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} | train_eli5 | What would happen if all the countries wiped all the debt incurred by and owed to each other?
| [
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2kx0wl | How is complimenting a woman on the street considered street harassment? | explainlikeimfive | {
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"Part of the issue is that like many things in life the difference between something being nice, acceptable, and annoying has to do with how often something happens. If you don't see another car on the road for an hour it can be a relief to ... | {
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} | train_eli5 | How is complimenting a woman on the street considered street harassment?
| [
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1ldlac | What is fake meat made of and how do they get the texture to be so similar to real meat? | explainlikeimfive | {
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"Soy burgers = soy protein. (dont eat too much soy: hormone mimickers). Texture is naturally kinda 'meaty'. \n\nMyco burgers = mycelium. That's what mushrooms are grown from. They can't call em mushroom burgers, because mushrooms are the fruit the mycelium would produce.... | {
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} | train_eli5 | What is fake meat made of and how do they get the texture to be so similar to real meat?
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2x44pp | Why is it sometimes hard to find something that is right in front of our eyes. | This happens all the time, but I was just looking for something that was sitting right next to my right hand. I got up and looks in a couple of rooms only come to and sit back down at my seat and see it right there was I was the whole time. | explainlikeimfive | {
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"I literally hadn't eaten toast or anything that required a toaster si... | {
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} | train_eli5 | Why is it sometimes hard to find something that is right in front of our eyes.
This happens all the time, but I was just looking for something that was sitting right next to my right hand. I got up and looks in a couple of rooms only come to and sit back down at my seat and see it right there was I was the whole time. | [
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2dqfaf | Why doesn't the body produce oil like the face does? | Why is is just my face that gets oily and pimple prone? Why isn't that oil produced everywhere else on the body? | explainlikeimfive | {
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"Actually your entire body produces the oil, but since your face is usually dryer (being in the sun for example) those glands work harder, not to mention think of how much you touch your face throughout the day, transferring more oil. Sometimes, certain foods etc will ki... | {
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} | train_eli5 | Why doesn't the body produce oil like the face does?
Why is is just my face that gets oily and pimple prone? Why isn't that oil produced everywhere else on the body? | [
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lpf57 | Dash cameras in Asia? | I always see accident videos in asia through dash cams but I don't know why since they are not cops or taxis. So do cars out in China/Japan/Korea have dash cams for insurance purposes, if not why? | explainlikeimfive | {
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"Yeah, a lot of cars have dash cams which record the last 5 minutes, continually recording and saving whilst deleting anything older than 5 minutes old. When an accident occurs, the camera can either automatically detect something has gone wrong and continue recording be... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Dash cameras in Asia?
I always see accident videos in asia through dash cams but I don't know why since they are not cops or taxis. So do cars out in China/Japan/Korea have dash cams for insurance purposes, if not why? | [
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1jok76 | Why do some people get brain freeze? | Some people can down any thing cold without problems. If I sip something cold I immediately get this pain above my right eye that last for about 20 seconds. Can anyone ELI5? | explainlikeimfive | {
"a_id": [
"cbgqwqr"
],
"text": [
"As long as it doesn't touch the roof of your mouth, you won't get brain freeze."
],
"score": [
2
]
} | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Why do some people get brain freeze?
Some people can down any thing cold without problems. If I sip something cold I immediately get this pain above my right eye that last for about 20 seconds. Can anyone ELI5? | [
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4f848k | Why is second day chili better? | explainlikeimfive | {
"a_id": [
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"d26n07i"
],
"text": [
"The acids in tomatoes, peppers, and onions take time to break down carbohydrates (beans) and proteins (meat). So overnight the beans and meat absorb more of the delicious spicy flavor.",
"The water in the chili is a *solvent,* dissolving various tast... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Why is second day chili better?
| [
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5kgjw0 | How does the _URL_0_ door knocking audio clip do such a good job of making it sound like the audio doesn't come from your headphones? | [removed] | explainlikeimfive | {
"a_id": [
"dbnrjzc"
],
"text": [
"Ha, had the speakers on when I played that audio clip and the cat **freaked** out. Apparently that knock knock fools animals into thinking someone's at the front door too.\n\nYour brain determines the location of a sound's source by a few different factors. Namely, dist... | {
"url": [
"puu.sh"
]
} | {
"url": []
} | {
"url": [
"https://images-na.ssl-images-amazon.com/images/I/51C0-nd-z5L._SX466_.jpg",
"https://www.youtube.com/watch?v=IUDTlvagjJA"
]
} | train_eli5 | How does the _URL_0_ door knocking audio clip do such a good job of making it sound like the audio doesn't come from your headphones?
[removed] | [
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1zgwa3 | Computer/TV Screen Size Pricing | Why does a screen that is larger cost so much more than a smaller one of the same resolution? Wouldn't it be easier and cheaper to produce a screen with a lower pixel density? | explainlikeimfive | {
"a_id": [
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],
"text": [
"Easier, yes, in the sense that the assembly requires less pricise equipment. Not necessarily cheaper, though, because of the material costs.",
"Pricing is determined by a few factors, including cost of materials, cost of R & D, economy of scale (mean... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Computer/TV Screen Size Pricing
Why does a screen that is larger cost so much more than a smaller one of the same resolution? Wouldn't it be easier and cheaper to produce a screen with a lower pixel density? | [
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4ggr01 | If you have no sense of taste can you feel the heat/spiciness from something like a pepper? | [removed] | explainlikeimfive | {
"a_id": [
"d2hez7o"
],
"text": [
"Yes. Capsaicin (the chemical responsible for the spiciness of peppers), interacts with neurons, not taste receptor (although taste receptors are similar to very specialized neurons) so they would still feel the heat"
],
"score": [
2
]
} | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | If you have no sense of taste can you feel the heat/spiciness from something like a pepper?
[removed] | [
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1qcnpv | Why can we only use ~0.35 volts of batteries? | Having 3 kids, we go through a lot of batteries. I tend to test them with a multimeter before disposing of them and they generally clock in at 1.15v when "empty". Knowing a new/full battery is 1.5v, isn't it a huge waste? Why can't devices use all the energy stored in them? | explainlikeimfive | {
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],
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"The notion that voltage and capacity are the same thing is where you've gone wrong. A battery will supply a certain amount of energy (usually measured in milliamp-hours^* ) over it's lifetime. But it will maintain roughly t... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://madscientisthut.com/wordpress/daily-blog/make-a-joule-thief-battery-charger/attachment/aa-100ma/"
]
} | train_eli5 | Why can we only use ~0.35 volts of batteries?
Having 3 kids, we go through a lot of batteries. I tend to test them with a multimeter before disposing of them and they generally clock in at 1.15v when "empty". Knowing a new/full battery is 1.5v, isn't it a huge waste? Why can't devices use all the energy stored in them? | [
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8ig2qt | Why do people think Yellowstone will explode and destroy the earth, but not worry about Hawaii's volcano eruption? | explainlikeimfive | {
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} | {
"url": [
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"https://www.goodreads.com/book/show/21.A_Short_History_of_Nearly_Everything",
"day.it",
"http://www.findingdulcinea.com/news/science/2009/jan/Understanding-Why-Yellowstones-Supervolcano-Is-So-Dangerous-.html",
"https://en.wiki... | train_eli5 | Why do people think Yellowstone will explode and destroy the earth, but not worry about Hawaii's volcano eruption?
| [
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6fjklq | How does cutting down trees to plant other vegetation for the purpose of cultivation (such as avocado farming) contribute to global warming? | I recently read that avocados are bad for the environment. The reasoning was that the recent incline in demand for avocados in the U.S. has led avocado farmers in Mexico to clear out massive amounts of land and trees to plant their crops. While I understand why deforestation for the purpose of animal farming (cattle, e... | explainlikeimfive | {
"a_id": [
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],
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"When you cut down highly developed forests to replace them with cultivated land you're seriously lowering the amount of CO2 that can be absorbed.\n\nA big tree that is several decades old will take in WAY more CO2 than several seedlings that are planted t... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://www.nationalgeographic.com/content/dam/environment/photos/000/003/300.ngsversion.1485547204622.adapt.1900.1.jpg",
"http://www.kingavocado.com/image.php?url=images/content/DSC00224.JPG&max_width=930"
]
} | train_eli5 | How does cutting down trees to plant other vegetation for the purpose of cultivation (such as avocado farming) contribute to global warming?
I recently read that avocados are bad for the environment. The reasoning was that the recent incline in demand for avocados in the U.S. has led avocado farmers in Mexico to clear ... | [
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4t4ycc | Mattress Sizes? | I've wondered my whole life why they call it a twin sized mattress so I decided to come to here with my questions:
How did the different mattress sizes get chosen? How did the names get chosen?
| explainlikeimfive | {
"a_id": [
"d5eu30s"
],
"text": [
"It's called twin because a long time ago you bought two of them, one for each person in a husband/wife partnership. You only slept together to make babies, you sinners! Then along came the Full which was meant for two people (though no room to move!). Queen was a lu... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Mattress Sizes?
I've wondered my whole life why they call it a twin sized mattress so I decided to come to here with my questions: How did the different mattress sizes get chosen? How did the names get chosen? | [
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5jhpn6 | What happens to Lactose when ingested by Lactose-Intolerants? | I am lactose intolerant, and have been for my whole life. What i want to know is what happens to the Lactose inside dairy-full products? Does it get pushed out through the bowels, fermented in the stomach, or somehow broken down and turned into other supplies? | explainlikeimfive | {
"a_id": [
"dbga5dc"
],
"text": [
"So, from what I've understood in the past, people who are lactose-intolerant aren't able to break down lactose. Their body doesn't produce enough lactase, which is an enzyme that breaks down lactose. So, depending on how much lactose is taken in, it usually is broken do... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | What happens to Lactose when ingested by Lactose-Intolerants?
I am lactose intolerant, and have been for my whole life. What i want to know is what happens to the Lactose inside dairy-full products? Does it get pushed out through the bowels, fermented in the stomach, or somehow broken down and turned into other supplie... | [
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3tkfny | If Helicopters need tail rotors to stabilize themselves from spinning, how can turboprop airplanes have only one rotor and not spin in circles? | explainlikeimfive | {
"a_id": [
"cx6vkql",
"cx6wbma"
],
"text": [
"On a helicopter the main rotor blades are the wings, a plane has fixed wings that use the air to resist the torque of the prop that's trying to make the plane roll (this is also why single prop driven planes roll to one side faster than they can to the ot... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | If Helicopters need tail rotors to stabilize themselves from spinning, how can turboprop airplanes have only one rotor and not spin in circles?
| [
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3f8ade | What is the difference between an air-conditioner and a "marine" air conditioner (commonly used on boats)? | explainlikeimfive | {
"a_id": [
"ctm8903",
"ctm8ait"
],
"text": [
"Caveat - I mess with boats but I'm not expert or pro. In general marine equipment is made with more corrosion resistant materials,such as stainless steel. The A/C on my boat exchanges the heat in the cabin air into water that flows through the other side ... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://www.marineair.com/International/PG-6979-Air-Conditioning/PG-6981-Self-Contained-Air-Conditioning/MD-50919-Vector-Turbo-Series-Air-Conditioning/SK-51047-Vector-Turbo-6000-BTUh-115V60Hz1-Ph"
]
} | train_eli5 | What is the difference between an air-conditioner and a "marine" air conditioner (commonly used on boats)?
| [
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1yz7y3 | Why do people bother keeping savings in banks/currencies which are potentially unstable? | With the current situation in Ukraine slowly escalating towards a potential economic collapse, many people choose to [withdraw their money](_URL_0_) from local banks.
This got me thinking - how on Earth could anyone think it was a good idea to keep any significant savings in Ukrainian banks in the first place?
I can... | explainlikeimfive | {
"a_id": [
"cfp388t",
"cfp3hxf",
"cfp4zfh"
],
"text": [
"I see two reasons:\n\n1. In most European countries you need a residence permit to open a bank account. In other words, you must live in the country where you want the bank account. Some countries, like Switzerland, allow foreigners to open... | {
"url": []
} | {
"url": [
"http://www.zerohedge.com/news/2014-02-25/bank-run-full-frontal-ukrainians-withdrew-7-all-deposits-two-days"
]
} | {
"url": []
} | train_eli5 | Why do people bother keeping savings in banks/currencies which are potentially unstable?
With the current situation in Ukraine slowly escalating towards a potential economic collapse, many people choose to [withdraw their money](_URL_0_) from local banks. This got me thinking - how on Earth could anyone think it was a ... | [
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90cyb3 | Why does water freeze from top to bottom? Deep in the ocean it’s below freezing, why doesn’t it freeze? | [removed] | explainlikeimfive | {
"a_id": [
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"text": [
"There are several reasons. The salt in the ocean lowers the temperature needed to make it freeze. Currents stop the ice from bonding, a... | {
"url": []
} | {
"url": []
} | {
"url": [
"https://youtu.be/lAupJzH31tc"
]
} | train_eli5 | Why does water freeze from top to bottom? Deep in the ocean it’s below freezing, why doesn’t it freeze?
[removed] | [
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19kskq | how they catch digital pirates who use hotspots or do they? | I know one way to catch pirates is to track IP addresses and get the info from the ISP but what of people that, for example, go to mcdonald's and use the free wifi to download movies and music? Do they run the same risk and if so, how do they get traced even though it's a different IP that they haven't provided persona... | explainlikeimfive | {
"a_id": [
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],
"text": [
"Normally, They don't. If they actually want to track down someone who is using a proxy, they will be able to; but for something as harmless as pirating(relative to say, hacking a company's system) it is not worth their time and money just to find out who ... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | how they catch digital pirates who use hotspots or do they?
I know one way to catch pirates is to track IP addresses and get the info from the ISP but what of people that, for example, go to mcdonald's and use the free wifi to download movies and music? Do they run the same risk and if so, how do they get traced even t... | [
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1jah2c | The voting rights of citizens in the District of Columbia historically differ from the rights of citizens in each of the 50 U.S. states. Why can't the U.S. just add an amendment to fix that right now? | This comes from wikipedia:
The District of Columbia Voting Rights Amendment was proposed by the 95th Congress on August 22, 1978. Had this amendment been ratified, it would have granted to Washington, D.C. two Senators and at least one member of the House of Representatives as though the District of Columbia were a st... | explainlikeimfive | {
"a_id": [
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"cbcpk6z"
],
"text": [
"Because politics quickly becomes political. Currently D.C. is extremely Democratic, so Republicans don't want 2 new Democratic Senators. If the situation was reversed it's likely that the sides would quickly flip and Democrats would be bl... | {
"url": []
} | {
"url": [
"http://en.wikipedia.org/wiki/United_States_Constitution"
]
} | {
"url": []
} | train_eli5 | The voting rights of citizens in the District of Columbia historically differ from the rights of citizens in each of the 50 U.S. states. Why can't the U.S. just add an amendment to fix that right now?
This comes from wikipedia: The District of Columbia Voting Rights Amendment was proposed by the 95th Congress on August... | [
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2cimvd | Why did it take so long to invent the printing press? | It seems like such a simple invention that had an exponential effect and if invented even a decade earlier could have significant effects to our everyday lives after all it did open the first age of information, to think all the pieces where there for the invention hundreds maybe thousands of years prior I just can't u... | explainlikeimfive | {
"a_id": [
"cjfu8jc"
],
"text": [
"Tske into consideration the literacy rate.\n\nMost people could not read and had no reason to.\n\nNecessity is the mother of invention, that is a true idiom.\n\nThere wasn't a need for it.\n\nAs was stated, the Chinese invented movable type a few centuries before Europe... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Why did it take so long to invent the printing press?
It seems like such a simple invention that had an exponential effect and if invented even a decade earlier could have significant effects to our everyday lives after all it did open the first age of information, to think all the pieces where there for the invention ... | [
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2tss90 | I've been reading up on nukes. Did the Nevada nuclear tests have nuclear winter? Why or why not? | explainlikeimfive | {
"a_id": [
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"co20111",
"co21efc"
],
"text": [
"Nuclear Winter is not a local effect resulting from an atomic blast, but rather a hypothetical effect from lots of nukes going off. The theory is that the nukes would kick a lot of soot and dust up in to the air, blocking out the sun. The... | {
"url": []
} | {
"url": []
} | {
"url": [
"https://www.youtube.com/watch?v=s8taGbueKBI"
]
} | train_eli5 | I've been reading up on nukes. Did the Nevada nuclear tests have nuclear winter? Why or why not?
| [
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3c99e4 | How come cars are able to go up to 220 km/h but highways only allow speeds of up to 110 km/h. Wouldn't it be wiser to have cars max out at 110 km/h-ish and reduce the engine capabilities? | explainlikeimfive | {
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"How long do you want to take to accelerate? Merging onto the highway in a reasonable time takes far more power than maintaining a constant speed. Ther... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | How come cars are able to go up to 220 km/h but highways only allow speeds of up to 110 km/h. Wouldn't it be wiser to have cars max out at 110 km/h-ish and reduce the engine capabilities?
| [
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6hk74n | Is it ever possible in the future to have matching finger/thumbprints? | In other words, is it possible to 'run out of' patterns? | explainlikeimfive | {
"a_id": [
"diyyrds"
],
"text": [
"The idea that everyone has a unique fingerprint isnt really scientifically proven. There is a real possibility that you and someone else currently living have identical fingerprints."
],
"score": [
15
]
} | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Is it ever possible in the future to have matching finger/thumbprints?
In other words, is it possible to 'run out of' patterns? | [
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1hfibf | How a military can overthrow a government? | Based off of this article from the NYT today: _URL_0_
How is it that a military can take steps to "overthrow" a government. To my understanding, a president has control over the military, so how can this be?
Thanks! | explainlikeimfive | {
"a_id": [
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],
"text": [
"The people with the guns stop doing what the president says, and they use their guns to do what they want. That's basically how it goes.",
"Basically they shoot it. All civilian governments have exactly as much power over their milita... | {
"url": []
} | {
"url": [
"http://www.nytimes.com/2013/07/02/world/middleeast/egypt-protests.html"
]
} | {
"url": []
} | train_eli5 | How a military can overthrow a government?
Based off of this article from the NYT today: _URL_0_ How is it that a military can take steps to "overthrow" a government. To my understanding, a president has control over the military, so how can this be? Thanks! | [
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3lqf1p | How do we go from binary codes to basic programming languages? | explainlikeimfive | {
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"cv8f3t7"
],
"text": [
"The lowest level instructions in a computer are the instructions of the CPU architecture. This varies between CPUs but there's two main ones currently: x86 used by Intel and AMD processors, and the one used by ARM processors.\n\nThese instructions usually look something... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | How do we go from binary codes to basic programming languages?
| [
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2c7hbe | why does spicy food stay spicy when it comes out the other end? | Shouldn't it be digested? Do other flavors "survive" the way spicy flavors seem to? | explainlikeimfive | {
"a_id": [
"cjcqqz7",
"cjcoruc"
],
"text": [
"Spiciness isn't a flavor, it's a reaction to the chemical capsaicin, which irritates any tissue it contacts, not just your tongue. This is also why the area around your lips gets sore while eating wings.",
"Your digestive system is not %100 efficient.... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | why does spicy food stay spicy when it comes out the other end?
Shouldn't it be digested? Do other flavors "survive" the way spicy flavors seem to? | [
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2383nl | Why do posts on reddit not start on 0 (what's the purpose of allowing one to vote for oneself)? | explainlikeimfive | {
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"url": []
} | {
"url": []
} | {
"url": [
"http://simple.wikipedia.org/wiki/Logarithm",
"http://www.outofscope.com/reddits-empire-no-longer-founded-on-a-flawed-algorithm/"
]
} | train_eli5 | Why do posts on reddit not start on 0 (what's the purpose of allowing one to vote for oneself)?
| [
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8q7obo | if you light a lighter in front of a TV, why does the reflection show 4 tiny rainbows around the flame? | explainlikeimfive | {
"a_id": [
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],
"text": [
"This is to do with, not the display itself, but the layers of diffusers that make up the backlight behind the display\n\nAn LCD TV consists of a backlight and an LCD panel. The backlight's job is to produce an even spread of light across the display. You first have an a... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | if you light a lighter in front of a TV, why does the reflection show 4 tiny rainbows around the flame?
| [
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4njezi | How does copyright work with references? | Example: If someone wrote a book, and at one point a character mentioned and episode of a show or a video game, does the creator have to pay a royalty to mention that? And at one point does that cross the line? Does having an episode of a show be a plot point in your story break copyright law? Thank you! | explainlikeimfive | {
"a_id": [
"d44ej3r",
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],
"text": [
"US copyright has a Fair Use clause, which a minor reference like the ones you are mentioning fall under. You don't need to pay royalties for something like mentioning \"I saw something like this on Star Trek once!\" or \"This is like Episode 79 of the Ori... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://www.copyright.gov/fair-use/more-info.html"
]
} | train_eli5 | How does copyright work with references?
Example: If someone wrote a book, and at one point a character mentioned and episode of a show or a video game, does the creator have to pay a royalty to mention that? And at one point does that cross the line? Does having an episode of a show be a plot point in your story break... | [
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5hnbhw | Why does China take claim to Taiwan? | I always see the Chinese government believe that they own Taiwan, yet it is technically sovereign? | explainlikeimfive | {
"a_id": [
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"db1frs6"
],
"text": [
"Before the 1930's the Island of Taiwan was part of the nation of China. During the 1930's China suffered a civil war with many factions, the most prominent of which were the communist party(CPC) and the Government(KMT). This civil war spann... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Why does China take claim to Taiwan?
I always see the Chinese government believe that they own Taiwan, yet it is technically sovereign? | [
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3jeoha | Why is the word 'cunt' such a taboo word in the U.S.? | [removed] | explainlikeimfive | {
"a_id": [
"cuolapo",
"cuongh7"
],
"text": [
"People have made it so. Words can be given such power based on how they're used in the culture. I remember when Austin Powers 2 came out (it was called Austin Powers 2: The Spy Who Shagged Me), and that was seen as quite vulgar for British people. In ... | {
"url": []
} | {
"url": []
} | {
"url": [
"https://www.reddit.com/r/explainlikeimfive/search?restrict_sr=on&sort=relevance&t=all&q=word%20cunt"
]
} | train_eli5 | Why is the word 'cunt' such a taboo word in the U.S.?
[removed] | [
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8bvsvh | why is it so easy for people to start working out regularly but it’s hard to stop eating certain foods or cutting back? | [removed] | explainlikeimfive | {
"a_id": [
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"dxa20hv"
],
"text": [
"Human being are designed to eat as much food as they possibly can, because in nature food is a whole lot rarer. We crave salt, fat, and sugar. This is a problem today because we have industrial farming and society. When he had to hunt down all out food ou... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | why is it so easy for people to start working out regularly but it’s hard to stop eating certain foods or cutting back?
[removed] | [
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2kqsrc | Why is the USA drinking age set at 21 when in most other respects you're an adult at 18. | Not trying to criticize, just wondering how it got set to 21... seems arbitrary. | explainlikeimfive | {
"a_id": [
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],
"text": [
"In the 60s and 70s, the US had a **lot** of fatalities as a result of teenage drunk driving. Waaay more than any other country did.\n\nReally, there were two options available to them: raise the drinking age, o... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Why is the USA drinking age set at 21 when in most other respects you're an adult at 18.
Not trying to criticize, just wondering how it got set to 21... seems arbitrary. | [
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2lhad1 | Why do I not smell perfume I've sprayed on me but other people do? | I love wearing different perfumes so it's not like I'm used to the same fragrance. Once the fragrance sets in, I never smell it unless I bring my shirt or wrist up to my nose but people around me will tell me I smell good. Why can't I enjoy the damn fragrance I spent so much money on?! :P | explainlikeimfive | {
"a_id": [
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"clurnzo"
],
"text": [
"Why don't you see your nose? It's within your vision.\n\nYour brain filters out your nose, because it's always there, and likewise, it filters out smells that are \"always there\". \n\nThe phenomenon is called [sensory adaptation](_URL_0_), this is the ... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://en.wikipedia.org/wiki/Neural_adaptation"
]
} | train_eli5 | Why do I not smell perfume I've sprayed on me but other people do?
I love wearing different perfumes so it's not like I'm used to the same fragrance. Once the fragrance sets in, I never smell it unless I bring my shirt or wrist up to my nose but people around me will tell me I smell good. Why can't I enjoy the damn fra... | [
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48q6wy | How does a two headed reptile/siamese twins work? How do they move their bodies assuming there are two brains? | [deleted] | explainlikeimfive | {
"a_id": [
"d0lsngv"
],
"text": [
"Typically each twin controls a different part of the body. Like the twin girls Brittany and Abigail Hensel. They give the appearance of being one body with two heads, though they have two of each organ above the waist. They have two arms, each controlling one. And from ... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | How does a two headed reptile/siamese twins work? How do they move their bodies assuming there are two brains?
[deleted] | [
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1ofr1c | How do human voices work? What makes our voices seem so unique? | (Excluding things like accents etc) | explainlikeimfive | {
"a_id": [
"ccrq2va"
],
"text": [
"Finally a question that being a voice major has equipped me to answer! (Avoiding the proper terms for parts because that's what Google is for):\n\nAir passes from your lungs in between your vocal folds (roughly right behind your Adam's apple, that's a front projection ... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | How do human voices work? What makes our voices seem so unique?
(Excluding things like accents etc) | [
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2bixaj | why aren't AK47's an "accurate" rifle | explainlikeimfive | {
"a_id": [
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],
"text": [
"1. AK-47's distance between the sight and post is very short which makes it so that for longer ranges, it is extremely difficult to line up an accurate shot as you are more likely to be misaligned with your eye to the sights.... | {
"url": []
} | {
"url": []
} | {
"url": [
"https://www.youtube.com/watch?v=LUJVtup3nJ4",
"https://www.youtube.com/watch?v=xeeeFxA_9nA",
"https://www.youtube.com/watch?v=gD7pd03L43k"
]
} | train_eli5 | why aren't AK47's an "accurate" rifle
| [
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271vef | Why can I not remember what happens when I'm drunk? | Where do the memories go? Everything that happens and I experience, does it just not get processed? Will I one day remember distant drunk memories? Once I disappeared and woke up on the other side of an island on holiday, I'd really like to find out what happened.
Or is it all just some sort of chemical imbalance whic... | explainlikeimfive | {
"a_id": [
"chwlgt6"
],
"text": [
"Memories enter the brain first as short term memory, that is then transformed into a long-term memory. \nThis is evident because the majority of short-term memories that we experience are lost before they ever make it into what we will call \"long-term\" storage. \n\nW... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Why can I not remember what happens when I'm drunk?
Where do the memories go? Everything that happens and I experience, does it just not get processed? Will I one day remember distant drunk memories? Once I disappeared and woke up on the other side of an island on holiday, I'd really like to find out what happened. Or ... | [
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38uslm | Why does having noise in the background (TV, music, etc.) make me feel safer when I'm home alone? | explainlikeimfive | {
"a_id": [
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"text": [
"Your ears are sensitive through a wide ride of volumes. When it is very quiet, you hear faint noises you are unaccustomed to, which can be disconcerting. Background noise hides t... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Why does having noise in the background (TV, music, etc.) make me feel safer when I'm home alone?
| [
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6045of | Isn't the freshwater we have to work with just going in a cycle? How are we losing fresh water? | You are told not to take long showers because you're wasting water, but the water goes through the sewers and is cleaned and returned to the water supply, right? Same thing with toilet water, dishwasher, sink, washer, etc? So, where are we actually losing water when we use it? | explainlikeimfive | {
"a_id": [
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"df3i90q",
"df3eomq",
"df3ir9a",
"df3cnf0"
],
"text": [
"When the water ends up in the oceans, it slows down the cycling a lot. Water in aquifers (the stores under the ground that we access when we use wells) and water on Earth's surface are the cheap... | {
"url": []
} | {
"url": []
} | {
"url": [
"https://lasvegassun.com/news/2014/aug/24/how-our-water-goes-toilet-tap/"
]
} | train_eli5 | Isn't the freshwater we have to work with just going in a cycle? How are we losing fresh water?
You are told not to take long showers because you're wasting water, but the water goes through the sewers and is cleaned and returned to the water supply, right? Same thing with toilet water, dishwasher, sink, washer, etc? S... | [
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25wg9s | Why is there such a large Insane Clown Posse (Juggalo) following? | explainlikeimfive | {
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],
"text": [
"A lot of it is because the group tries to make its fans into a \"community\" (Juggalos). Like, fans of a band like, say, the Black Keys, are just people who happen to like the Black Keys. But ICP specifically e... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Why is there such a large Insane Clown Posse (Juggalo) following?
| [
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627lss | What's the best/safest/quickest way for a relatively skinny but unhealthy guy to get big using weights (w/ or w/o protein powder)? | [removed] | explainlikeimfive | {
"a_id": [
"dfkd3nk",
"dfkdd7q"
],
"text": [
"The gist of it is to lift weights and eat a **lot** of food. A program like Stronglifts is great for beginners. \n\nProtein powder isn't magic, it's just a cheap and easy source of protein. Most people find it easier to drink a protein shake than to eat a... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | What's the best/safest/quickest way for a relatively skinny but unhealthy guy to get big using weights (w/ or w/o protein powder)?
[removed] | [
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17geb3 | Why metal at room temperature feels cold while, say, fabric at room temperature doesn't | My room is probably in the mid-60s and my metal nail-clippers and metal spoon feel very cold to the touch, but if I touch a blanket sitting on my couch it feels the same temperature as the rest of the room. Why is this? | explainlikeimfive | {
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],
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"I believe it has something to do with the rate at which heat from your body is transferred to the material. Your body is hotter than both the fabric and the spoon, which are at the same temperature, but the spoon conducts the heat at a fas... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Why metal at room temperature feels cold while, say, fabric at room temperature doesn't
My room is probably in the mid-60s and my metal nail-clippers and metal spoon feel very cold to the touch, but if I touch a blanket sitting on my couch it feels the same temperature as the rest of the room. Why is this? | [
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49vbyw | A neighborhood cat comes to your home and you feed it. A day/week later, other cats appear at your house looking for food. How did the other cats find out that you're a food giver? | This has happened to me before. My neighbor's cat was in my yard and I fed it a slice of salami, and a day or so later there were at least five cats hanging around my house.
I figured it's because cats can smell the food that other cats eat (on other cats' breath or something), and then they learn where that food come... | explainlikeimfive | {
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"Kitties talk among themselves, just like humans. They may not make a sound, but they do communicate ... and follow each other around.\n\nSeriously: you can/should check out [Alley Cat Allies](_URL_0_) for all sorts of info ab... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://www.alleycat.org/page.aspx?pid=431"
]
} | train_eli5 | A neighborhood cat comes to your home and you feed it. A day/week later, other cats appear at your house looking for food. How did the other cats find out that you're a food giver?
This has happened to me before. My neighbor's cat was in my yard and I fed it a slice of salami, and a day or so later there were at least ... | [
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1xrsvm | Why do southern states freak out over a little snow? | It snowed like 3 inches in NC and there were abandoned cars everywhere. | explainlikeimfive | {
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"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Why do southern states freak out over a little snow?
It snowed like 3 inches in NC and there were abandoned cars everywhere. | [
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4r24rs | What is the origin and meaning of "Strange women lying in ponds distributing swords is no basis for a system of government." | I see this come up quite a bit on Reddit. I understand that it's likely a metaphorical reference to the imperfections of democracy, but what exactly does it mean and where does it come from? | explainlikeimfive | {
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"It's a quote from Monty Python and the Holy Grail. The \"strange woman lying in pond\" is the Lady of the Lake from the Arthurian legend.\n\n_URL_0_",
"It is talking about the legend of King ... | {
"url": []
} | {
"url": []
} | {
"url": [
"https://www.youtube.com/watch?v=dOOTKA0aGI0"
]
} | train_eli5 | What is the origin and meaning of "Strange women lying in ponds distributing swords is no basis for a system of government."
I see this come up quite a bit on Reddit. I understand that it's likely a metaphorical reference to the imperfections of democracy, but what exactly does it mean and where does it come from? | [
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1ql953 | What are those bastardly little tongue sores you get from eating too much salt or sugar, and how do you get rid of them? | After I eat too many sweets or salty snacks, sometimes I get a little bump (in rare cases, a few) near the tip of my tongue. Grazing it against my teeth or gums is almost itchy, but it's slightly painful if I apply harder pressure. What are these things called, how exactly do they form, and are there any reliable met... | explainlikeimfive | {
"a_id": [
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],
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"The condition is called aphthous stomatitis, or commonly, canker sores. They are NOT inflamed tastebuds. Rather, they are small ulcers (areas of inflamed, healing tissue) that are characteristically painful and confined to the mucosa (soft tissue) of the ... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://www.reddit.com/r/explainlikeimfive/search?q=canker+sore&restrict_sr=on&sort=relevance&t=all",
"http://link.springer.com/article/10.1007%2Fs00005-013-0261-y/fulltext.html#Sec2"
]
} | train_eli5 | What are those bastardly little tongue sores you get from eating too much salt or sugar, and how do you get rid of them?
After I eat too many sweets or salty snacks, sometimes I get a little bump (in rare cases, a few) near the tip of my tongue. Grazing it against my teeth or gums is almost itchy, but it's slightly pai... | [
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4gtubr | Why are swearing words related to genitals and/or sexuality? | explainlikeimfive | {
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],
"text": [
"Swear words come from things we consider taboo or distasteful. In English-speaking society, we have a lot of taboos surrounding sex, even in this day and age. We also put a very high level of importance on hygiene, so words relating to waste and where the... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Why are swearing words related to genitals and/or sexuality?
| [
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15epd0 | How does a bird know to not sit on its unfertilized eggs? | And what's happening to all these unfertilized eggs in the wild? Do they just rot? I'm haunted by nightmares of a lonely hen sitting on eggs that will never hatch. | explainlikeimfive | {
"a_id": [
"c7m0az9"
],
"text": [
"They don't...They will sit on plastic eggs. The hen eventually gives up and deserts the nest and will try again...Yeah,the eggs rot if something like a squirrel, or another bird does not eat them before they go bad.\n\n_URL_0_"
],
"score": [
2
]
} | {
"url": []
} | {
"url": []
} | {
"url": [
"http://www.theeggshop.com/"
]
} | train_eli5 | How does a bird know to not sit on its unfertilized eggs?
And what's happening to all these unfertilized eggs in the wild? Do they just rot? I'm haunted by nightmares of a lonely hen sitting on eggs that will never hatch. | [
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5ww96o | Why does Basic Income Decrease "Werkgelegenheid" and is this the same metric as "Job Opportunities"? | [removed] | explainlikeimfive | {
"a_id": [
"dedau1t"
],
"text": [
"> isn't employment rate supposed to reflect how many people are voluntarily employed compared to unvoluntarily employed?\n\nIf you consider those who need the money to live but if they didn't wouldn't work as \"involuntarily employed\" and not part of the employment ra... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Why does Basic Income Decrease "Werkgelegenheid" and is this the same metric as "Job Opportunities"?
[removed] | [
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w4mgs | How does Task Manager's "Set Priority" work, does it increase performance significantly, and how/should I use it? | I've done a few google searches and it's shown me forums, which all say in one way or another "DO NOT SET A PROGRAM TO REAL-TIME", in which I'll heed that advice. I just want to know, would setting something to above normal effect anything? Someone said to set Steam's Overlay to Above Normal to prevent it from crashing... | explainlikeimfive | {
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"Windows is built for multitasking. The 'Set Priority' feature is intended for managing what processes have a higher priority for resources (CPU) than other processes.\n\nApplications set to normal will go 50-50 on the resourc... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | How does Task Manager's "Set Priority" work, does it increase performance significantly, and how/should I use it?
I've done a few google searches and it's shown me forums, which all say in one way or another "DO NOT SET A PROGRAM TO REAL-TIME", in which I'll heed that advice. I just want to know, would setting somethin... | [
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3vral0 | the Venezuelan election results | [removed] | explainlikeimfive | {
"a_id": [
"cxq0bm1"
],
"text": [
"Not the exact answer you're looking for, but might provide context if you'd like it - _URL_0_"
],
"score": [
2
]
} | {
"url": []
} | {
"url": []
} | {
"url": [
"http://caracaschronicles.com/2015/12/04/venezuelas-election-the-basics/"
]
} | train_eli5 | the Venezuelan election results
[removed] | [
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3ceo9f | How can Pewdipie make $4M a year? | explainlikeimfive | {
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],
"text": [
"Most of his money would come from Youtube views and advertising. Having as many views as Pewdipie gets would certainly net you a lot of money from Youtube.",
"Youtube gets paid by advertisers to show their ... | {
"url": []
} | {
"url": []
} | {
"url": [
"https://youtu.be/IJhrpAWkASU",
"http://videopower.org/how-many-views-to-make-money-on-youtube/"
]
} | train_eli5 | How can Pewdipie make $4M a year?
| [
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3otc7z | Where exactly is a woman's G-spot located, and how do you find it? | explainlikeimfive | {
"a_id": [
"cw0b3fl"
],
"text": [
"Straight in, stick to the top, two o clock (yes always) until about the second bend in your fingers, if you've hit your knuckles that's way too far. It all generally feels the same to you but it has sort of an interesting texture. So I know perhaps you've always been to... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Where exactly is a woman's G-spot located, and how do you find it?
| [
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2wt5wm | Why do we hear static from radios and TV's when there's nothing being broadcast? Shouldn't we just hear silence? | explainlikeimfive | {
"a_id": [
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"cotv08v"
],
"text": [
"Because there isn't nothing there.\n\nEvery spectrum is full of random noise from stars, radioactive decay, all sorts of things like that. It's just terrestrial broadcasts are so much stronger that it overwhelms the random noise. This is why when you st... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://en.wikipedia.org/wiki/Holmdel_Horn_Antenna"
]
} | train_eli5 | Why do we hear static from radios and TV's when there's nothing being broadcast? Shouldn't we just hear silence?
| [
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3sx35l | why you can't put metal in the microwave but nothing happens to the metal that it's built from | [removed] | explainlikeimfive | {
"a_id": [
"cx13i0y"
],
"text": [
"You can put metal in microwaves, which is a lot come with racks, you just can't put metal with sharp edges/points such as forks and aluminum foil. As for the interior, most microwaves have their interior painted to prevent these issues."
],
"score": [
3
]
} | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | why you can't put metal in the microwave but nothing happens to the metal that it's built from
[removed] | [
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1s3m9h | How do street lights know when cars are there? | The street lights where I live switch green on all the main roads, and change whenever someone wants to left turn onto one at night. So, I was curious as to how the lights know you're there. Bonus: On the topic of street lights, what are the small black cylindrical boxes on top of most street lights? | explainlikeimfive | {
"a_id": [
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"cdtk14r"
],
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"There's a couple ways that traffic lights know there are cars there. \n\nThe first (and probably most common) is sensors under the road. They use coils of wire to detect when something magnetic (like the steel in a car) passes overhead. You can actuall... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | How do street lights know when cars are there?
The street lights where I live switch green on all the main roads, and change whenever someone wants to left turn onto one at night. So, I was curious as to how the lights know you're there. Bonus: On the topic of street lights, what are the small black cylindrical boxes o... | [
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17akbb | Why do people age? | Please try to explain as simply as possible. | explainlikeimfive | {
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],
"text": [
"Nothing is perfect. Even our bodies, the result of billions of years of evolution from the simplest single-celled life forms, begin to fail after awhile. All of the things that make our body run, our stomachs, hearts, brains,... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://www.reddit.com/r/explainlikeimfive/comments/17akbb/eli5_why_do_people_age/c83q2qh",
"http://en.wikipedia.org/wiki/Hydra_%28genus%29",
"http://en.wikipedia.org/wiki/Senescence"
]
} | train_eli5 | Why do people age?
Please try to explain as simply as possible. | [
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1kl1mu | The size of the universe. | How does, 'Special Relativity' factor in to the size of the universe?
I keep reading that the universe is 13 billion or so years old. But the size of it is 93 bil. light years in size? How do we presume this? How do we even presume the age of the universe? If everything is expanding, then maybe the OLDEST light REACHI... | explainlikeimfive | {
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"There's more than one way to measure cosmological distances.\n\nOne way is to use what's called the \"lookback distance.\" It's just the distance measured in units of time. If light from an galaxy has been in transit for a billion years, then you can quit... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://en.spaceengine.org/"
]
} | train_eli5 | The size of the universe.
How does, 'Special Relativity' factor in to the size of the universe? I keep reading that the universe is 13 billion or so years old. But the size of it is 93 bil. light years in size? How do we presume this? How do we even presume the age of the universe? If everything is expanding, then mayb... | [
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1wzq91 | Why do school hours not match working hours? | I know that a lot of working people struggle picking their kids up after school, so why does school finish so much earlier than an average 9-5 day job! | explainlikeimfive | {
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"That means teachers would go home at 7 or 8pm, school buses would have to contend with commuter traffic, and students would be walking home in the dark most of the time.",
"It's because when the times were setup it was to take into acco... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Why do school hours not match working hours?
I know that a lot of working people struggle picking their kids up after school, so why does school finish so much earlier than an average 9-5 day job! | [
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11hg3m | Why do dogs go absolutely crazy after getting a bath? | explainlikeimfive | {
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} | {
"url": []
} | {
"url": [
"http://perfectpuppycare.com/why-do-dogs-get-excited-after-a-bath/",
"http://petsadviser.com/behaviors/why-does-my-dog-go-crazy-after-bath/"
]
} | train_eli5 | Why do dogs go absolutely crazy after getting a bath?
| [
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1jhugs | What was the warsaw uprising | explainlikeimfive | {
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"Warsaw was under Nazi rule. People didn't like that, especially the Jews living in the ghetto. People were purposely starved, killed in the streets. The Polish Underground State was formed - a resistance paramilitary which wa... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://www.amazon.com/Rising-44-The-Battle-Warsaw/dp/0143035401"
]
} | train_eli5 | What was the warsaw uprising
| [
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2citow | How did the Romans express numbers in speech and/or calculation? | Did their way of thinking about numbers match Roman numerals? Would they say something like hundred-less-than-thousand for 900 (the Roman numeral would be CM where C=100 and M=1000) or did they have a different system for speech/calculation? | explainlikeimfive | {
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"This is a really good question, you should probably chuck it over onto /r/AskHistorians, they'd be more likely to have an actual, factual answer.\n\nEDIT: Someone has already asked it over there, the best answer last year came from /u/rosemary85 and goes as follows:\n >... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://www.reddit.com/r/AskHistorians/comments/1gh4ol/how_did_romans_say_numbers_aloud/"
]
} | train_eli5 | How did the Romans express numbers in speech and/or calculation?
Did their way of thinking about numbers match Roman numerals? Would they say something like hundred-less-than-thousand for 900 (the Roman numeral would be CM where C=100 and M=1000) or did they have a different system for speech/calculation? | [
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26uc9v | What's the difference between Genetic Drift and Natural Selection? | I looked at the wikipedia articles, but it was a bit too complex, can someone explain simply? | explainlikeimfive | {
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"text": [
"Both of these concepts deal with traits within a population changing over time. With natural selection, one trait is more advantageous, so organisms with that trait survive and reproduce more effectively, resulting in more organisms with that trait. Genetic drift is w... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | What's the difference between Genetic Drift and Natural Selection?
I looked at the wikipedia articles, but it was a bit too complex, can someone explain simply? | [
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1howcd | Why do professional athletes have a significantly lower pulse than the average person ? | explainlikeimfive | {
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"text": [
"Because they have increased stroke volume. Their hearts are strengthened so that they are able to move more blood with each pump, so their hearts don't need to pump as many times.",
"You have an empty pool and you need to... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Why do professional athletes have a significantly lower pulse than the average person ?
| [
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36j482 | Pirate Bay Megathread | This is the megathread for all things Pirate Bay related, included the recent court-mandated domain closures.
Please post all Pirate Bay related topics in here for the time being. | explainlikeimfive | {
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"url": []
} | {
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} | {
"url": [
"ThePirateBay.se",
"PirateBay.se",
"thepiratebay.se",
"piratebay.mn",
"piratebay.se"
]
} | train_eli5 | Pirate Bay Megathread
This is the megathread for all things Pirate Bay related, included the recent court-mandated domain closures. Please post all Pirate Bay related topics in here for the time being. | [
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460pvq | How, with the proliferation of free porn websites like youporn, does any porn production make money? | [removed] | explainlikeimfive | {
"a_id": [
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"text": [
"You like pink crayons a lot. There is this place where you can get free pink crayons, but you have to deal with ads and possibly malware. Also the pink crayons are low quality and the place may not have the specific type or model of pink crayon you are lo... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | How, with the proliferation of free porn websites like youporn, does any porn production make money?
[removed] | [
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20evkj | How do landlords make money | I rent a house with 2 other people and between us we pay around £750/month for a three bedroomed house. I used an online calculator to work out roughly what the mortgage would be for a property like mine and it comes out around £1500/ month. How does anyone make any money out of this? | explainlikeimfive | {
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"so essentially making money from letting requires a large amount of time and/or starting capital?",
"You're making the assumption that the market price of the house today (which is presumably... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | How do landlords make money
I rent a house with 2 other people and between us we pay around £750/month for a three bedroomed house. I used an online calculator to work out roughly what the mortgage would be for a property like mine and it comes out around £1500/ month. How does anyone make any money out of this? | [
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tndup | Why do DVDs in widescreen format play with black bars on top and bottom on my widescreen TV | explainlikeimfive | {
"a_id": [
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],
"text": [
"Just because it's \"widescreen\" doesn't mean that it's the same exact aspect ratio as your TV. A movie with black bars on the top and bottom was filmed in an aspect ration that's even wider than your widescreen TV.\n\n\nLook [here](_URL_1_). Most widescreen TV's are 1... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://en.wikipedia.org/wiki/Pan_and_scan",
"http://en.wikipedia.org/wiki/Aspect_ratio_\\(image\\)"
]
} | train_eli5 | Why do DVDs in widescreen format play with black bars on top and bottom on my widescreen TV
| [
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7yy4pa | How do spammers spoof a cell phone number to make scam calls? | [removed] | explainlikeimfive | {
"a_id": [
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"text": [
"When you make an outbound call, the calling system gives the phone system the caller ID information. The reason this can be (legitimately) different from the actual call is for example a business that has both direct lines to each extension and a main line. An employee ... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | How do spammers spoof a cell phone number to make scam calls?
[removed] | [
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5xokvr | How have wolves impacted Yellowstone? | How have they affected the biosphere, lithosphere, hydrosphere and atmosphere? I'm in geography so i would like answers. | explainlikeimfive | {
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"This is just one example. \n\nMore grazing animals means less vegetation for other animals to use as a home or shelter from prey.\n\nThey also took vegetation away from the river banks causing more erosion. (The roots held the soil in place)\n\nThe reintr... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://www.nationalgeographic.org/encyclopedia/keystone-species/",
"https://youtu.be/ysa5OBhXz-Q"
]
} | train_eli5 | How have wolves impacted Yellowstone?
How have they affected the biosphere, lithosphere, hydrosphere and atmosphere? I'm in geography so i would like answers. | [
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xr9iz | How do we move our body? | I understand that we use our brain to control the muscles and tendons to manipulate movement. But i'd like to know how we actually use our brain to do so. I mean, think about it, do the following: lift your right arm up, now your left leg, now look to your right and now up at the ceiling. Did you tell your brain to do ... | explainlikeimfive | {
"a_id": [
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],
"text": [
"Planning and decision making for motor movement happens in the [premotor cortex](_URL_0_). To see where it is, find a spot on the top of your head that's about three inches back from your hairline. This is the section in your brain that makes the decisions about lifti... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://en.wikipedia.org/wiki/Premotor_cortex",
"http://en.wikipedia.org/wiki/Motor_cortex"
]
} | train_eli5 | How do we move our body?
I understand that we use our brain to control the muscles and tendons to manipulate movement. But i'd like to know how we actually use our brain to do so. I mean, think about it, do the following: lift your right arm up, now your left leg, now look to your right and now up at the ceiling. Did y... | [
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1x0nfz | What is the difference between a CEO and the President of a company? | explainlikeimfive | {
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"text": [
"\"President\" is a term that is often based on the law of the place where the company is created. For example in the United States, most states require that a corporation have a person with the title President. That title carries with it some legal obli... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | What is the difference between a CEO and the President of a company?
| [
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3783a1 | Why does smoking cause some people to lose limbs/develop cancer while there are lifelong smokers who never have these problems? | explainlikeimfive | {
"a_id": [
"crkfusa"
],
"text": [
"The short answer is that at the chemical level biology is very complicated. We tend to think of all sickness and injury the same way we think of, say, a bullet wound---a single, distinct harm that directly interferes with how something in the body works in a simple way... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Why does smoking cause some people to lose limbs/develop cancer while there are lifelong smokers who never have these problems?
| [
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38vqhs | Why is it, that when I get really tired, everything is so much funnier? | explainlikeimfive | {
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... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://en.wikipedia.org/wiki/Pseudobulbar_affect",
"http://en.wikipedia.org/wiki/Sleep_deprivation#Treatment_for_depression",
"http://www.scientificamerican.com/article/why-sleep-deprivation-eases-depression/"
]
} | train_eli5 | Why is it, that when I get really tired, everything is so much funnier?
| [
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2r9rpr | Why you need to be grounded to get an electric shock? | Why doesn't the electricity go through your body and then return to the source where it came from? If it does do this then why do you not feel it?
Does the electricity somehow know you aren't touching the ground so just doesn't bother you? | explainlikeimfive | {
"a_id": [
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],
"text": [
"Electric currents aren't like Austin from middle school, they don't come out, wander around, bug people, and then go back home. \n\nElectricity flows from negatively charged objects, to positively charged objects, until the system is neutra... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Why you need to be grounded to get an electric shock?
Why doesn't the electricity go through your body and then return to the source where it came from? If it does do this then why do you not feel it? Does the electricity somehow know you aren't touching the ground so just doesn't bother you? | [
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0.037077... | |
67xqzm | How do people get infected with plaque? | Plaque is bacteria, right? If so, how is it that everyone has it in their mouths, even if they've had no contact with another person's mouth, even indirectly? | explainlikeimfive | {
"a_id": [
"dguad7z",
"dgu1409"
],
"text": [
"Plaque isn't just one bactera it is what is known as a biofilm. Layers and layers of diferent bactera and their extracellular matrixs. Pretty much any bactera can eventually form biofilms. Everyone has bactera on and in their bodies called their natural f... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | How do people get infected with plaque?
Plaque is bacteria, right? If so, how is it that everyone has it in their mouths, even if they've had no contact with another person's mouth, even indirectly? | [
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7lgolq | Why is it that a hard drive disc can have a capacity of 5TB+ but DVDs can only have a maximum of 9GB? | [removed] | explainlikeimfive | {
"a_id": [
"drm6rbg",
"drm33ak"
],
"text": [
"In addition to what's already been said about the actual technological differences, one major difference is working conditions.\n\nHard Disks are produced and sealed in clean factories to ensure there is no contamination. They are encased in thick unbend-... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://www.circuitstoday.com/wp-content/uploads/2010/03/Blue-ray-Disc-BD-vs-DVD.bmp"
]
} | train_eli5 | Why is it that a hard drive disc can have a capacity of 5TB+ but DVDs can only have a maximum of 9GB?
[removed] | [
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... | |
50cjak | How much racism/discrimination do Europeans who live in India or Africa face? | [removed] | explainlikeimfive | {
"a_id": [
"d72wwui",
"d72y354"
],
"text": [
"Maybe it's not racism or discrimination in the traditional sense, but I've heard anecdotally that whites in Sub-Saharan Africa are more likely to be targeted by robbers because they stand out it's presumed that they have money.",
"A fair amount, depen... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | How much racism/discrimination do Europeans who live in India or Africa face?
[removed] | [
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3o6lfy | Why does a company like Boeing need to make a commercial? It's not like anyone watching is going to buy one. | explainlikeimfive | {
"a_id": [
"cvuhwgw",
"cvuhvac",
"cvuiemd",
"cvui6xt",
"cvujrr5"
],
"text": [
"Companies that have to choose between Airbus or Boeing still consist of people (who can be manipulated through commercials), and they can sadly often do so with bias even though they're supposed to run the numb... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | Why does a company like Boeing need to make a commercial? It's not like anyone watching is going to buy one.
| [
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1lz78h | How do American football have bruised lungs without also having broken ribs? Isn't that the point of ribs? | I tried some googling, but the results more frequently discuss the symptoms and treatment of bruised lungs. American football players Barkevious Mingo and Eddie Royal are listed as having bruised lungs, but did not break their ribs. How can this happen? | explainlikeimfive | {
"a_id": [
"cc47h31",
"cc4744x"
],
"text": [
"This is actually one of the major issues with American football. The padding protects from the blunt hit and spreads out the impact so you aren't taking a lot of force to a particular place on your body, but your body is still being shoved really hard as... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | How do American football have bruised lungs without also having broken ribs? Isn't that the point of ribs?
I tried some googling, but the results more frequently discuss the symptoms and treatment of bruised lungs. American football players Barkevious Mingo and Eddie Royal are listed as having bruised lungs, but did no... | [
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30uvdy | What are dentists actually doing when they scrape at your teeth with those metal picks? | explainlikeimfive | {
"a_id": [
"cpw7axi",
"cpw05o0",
"cpw07zh",
"cpw0evc",
"cpw7f2x"
],
"text": [
"I think my dentist was counting money while my hygienist was scraping my teeth.",
"Scraping off the plaque build up. And it is usually the dental hygienist not the actual dentist.",
"Most of the time th... | {
"url": []
} | {
"url": []
} | {
"url": []
} | train_eli5 | What are dentists actually doing when they scrape at your teeth with those metal picks?
| [
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0.0... | ||
lpywz | When did we stop having to type in 'www.'? Why did we have to to begin with? | explainlikeimfive | {
"a_id": [
"c2unym7",
"c2uon0c"
],
"text": [
"It's because servers where traditionally named according to the services they provide. So a world wide web server had www., a file transfer protocol server had ftp., et caetera. We stopped having to type it because nowadays, the www._URL_0_ and _URL_0_ UR... | {
"url": []
} | {
"url": []
} | {
"url": [
"example.com",
"www.example.com"
]
} | train_eli5 | When did we stop having to type in 'www.'? Why did we have to to begin with?
| [
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0.03203200548887253,
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64o7nd | What is the difference between real and imaginary numbers? | explainlikeimfive | {
"a_id": [
"dg3r2ri",
"dg3t28k",
"dg3wydv",
"dg3qngj"
],
"text": [
"\"Imaginary\" is a bad word for them because they definitely exist, they're just part of the complex plane.\n\nImagine the number line, which contains all \"real\" numbers going off left and right into infinity. Left is nega... | {
"url": []
} | {
"url": []
} | {
"url": [
"https://www.youtube.com/watch?v=3BR8tK-LuB0"
]
} | train_eli5 | What is the difference between real and imaginary numbers?
| [
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0.006719321943819523,
0.0869... |
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