Split (3)

train · 273k rows

title stringlengths 0 299	text list
How does radar blocking technology work and are there more advanced systems which can get around those hardware systems?	[ "Radar relies on a signal bouncing off the target and returning to the radar dish.\n\nIf you can deflect or absorb the signal instead of reflecting it, you're effectively radar invisible.\n\nModern stealth aircraft rely on a combination of the two - angular surfaces to deflect radar pings off at odd angles and rada...
Why do diesel trucks often keep their engines running while refueling despite it being illegal for gas cars to do so?	[ "Gas vapors will ignite if you provide a source of ignition, diesel won't. Diesel fuel is basically a very light oil that only combusts when a vapor of it is mixed with air then compressed until it explodes. Diesel is so stable it's not as dangerous to work with as gasoline.", "Well, depending on your jurisdictio...
What's the difference between a warm light and a cold light?	[ "warm and cold has to do with color difference in lights. a warmer light is more orange or fire like, a cold like is whiter more like crisp snow", "This is known as color temperature.\n\n* Warm White: A slightly orange color light. This is what incandescent light bulbs create. It is thought to create a more c...
. What is the psychological reason people are terrified of rodents or other small animals/insects that will not harm them?	[ "What makes you think rodents are harmless?\n\nRodent-carried (or rather the fleas they carried) bubonic plague wiped out a third of Europe's population. Areas where rodents and insects are aplenty generally point to less sanitary conditions which in turn has an association with human health. Is it an entirely rat...
Why didn't the bones get destroyed?	[ "Either the bones are from creatures that went into the crater much later, or were bones that were underground/in adjacent areas that were later displaced from either surface or subsurface geological activity.\n\nAs you suspected, anything in or remotely close to that crater would have been completely vaporized. No...
Why are gold, silver, gemstones, etc. considered valuable?	[ "Pretty much what you said. Gold and silver are also valuable in their own right as components of manufactured goods.", "[This article](_URL_0_) does a good job explaining it in terms of gold & silver as currency but I'll do my best to sum it up.\n\n & #x200B;\n\nFirst the currency part: \nIt's basically just ...
What happens with out of duty nuclear reactors?	[ "The fuel is removed from the reactor and everything that can be decontaminated is removed. \n\nAll the buildings and structures outside the containment vessel are torn down or taken apart\n\nAnd the core of the reactor is moved to a safe place, encased in concrete and buried." ]
Why is it parrots can talk but other animals can't?	[ "They physically can't. Dogs, gorillas, pigs, elephants, dolphins - a lot of highly intelligent mammals can learn limited vocabulary and be taught various sounds or gestures to interact with handlers, but none of them have a vocal/respiratory structure that can form sounds approximating human speech.\n\nParrot phy...
Why are old photos warmer in color than more modern photos?	[ "The color temperature of a photo is determined by the white balance. Nowadays, with digital cameras, this white balance can be adjusted on-the-fly in software. A warm, yellow color room with incandescent light bulbs can be adjusted to have a cool, blue temperature.\n\nMost photos and print are set to a color tempe...
how is it so difficult to go to the moon in 2019 even after all the technological advances - why haven’t we been back?	[ "It’s expensive and useless. What would we go back for? Another publicity stunt? \n\nDrones and rovers are leagues cheaper and more scientifically useful. We went once to prove it could be done, there is no practical reason to go back. \n\nIt would be easier than it was the first time with modern equipment, but the...
Why is it common practice for music streaming services like Apple Music, Spotify and Pandora to have an overlapping catalogue but video streaming services like Netflix and Hulu are seemingly all done through exclusive contracts?	[ "Music companies (the record companies and artists) get paid on a per use basis. Each time a song is played, they get paid. Thats how the pay works. So the goal is to get your music in as many places as people could possibly listen to it, to rack up maximum plays.\n\nFrom a further standpoint, there are 3 main re...
How do scientists date prehistoric footprints? Wouldn’t the stone with the imprints be much older than the footprint?	[ "Prehistoric footprints are not made in stone, because of course you can't leave a footprint in a rock. What you can do is leave a footprint in something like mud, ~~with~~ which over millions of years mineralizes and becomes rock(y). You can date the footprint by dating the resulting rock if you're lucky, or with ...
How can bronze hold an edge, but brass can't?	[ "Brass can hold an edge but not very well.\n\nBrass is a softer, more malleable metal than bronze so any edge won't keep as long. It also oxidizes more easily, forming the green-blue patina associated with it. The oxidation will ruin the edge much like how rust ruins iron edges.\n\nBrass was also discovered in 500 ...
What exactly happens in the body during drug withdrawal that makes you so sick?	[ "you are being starved of dopamine activity, which is required for many more neural processes other than pleasure. These other functions that aren't receiving the activity they should are what causes these withdrawal side-effects. Dopamine downregulation occurs when a neural synapse is saturated by the neurotransmi...
Why do microphones occasionall make high-pitched ear-pearcing noise?	[ "this is called feedback and occurs when the signal from the microphone is amplified through a speaker and fed back to the microphone, which is then amplified again in a loop. As you already know, this cycle gets very loud very quickly." ]
(how) Do the veins in our palms or traps not get damaged/crushed when we hold a heavy barbell or place one on our backs? All that weight in pushing down on them, right?	[ "because they are elastic. You can squash and bend them and they will deform and return to their original shape when you release the pressure." ]
How can something be "anti-microbial"? Cant germs and bacteria grow on any surface?	[ "Antimicrobial surfaces are usually impregnated with a chemical that deters bacterial growth, such as silver or Triclosan. These substances interfere with the bacterial life cycle, preventing growth and reproduction. These surfaces are not used for everything because they are more expensive, and Triclosan in partic...
Why are there different types of police forces in the US vs just one type of police?	[ "Law is complicated. Being knowledgeable about all law is impossible, and more specialized topics like fish and game law is not something you want your run of the mill officers worrying about. Specialized agencies can do their particular job better, so you save by having a more effective force. Training, equipme...
How can an LCD panel independently control every pixel without having one signal wire for every sub-pixel?	[ "Lets keep it simple and use a 3x3 grid of LCD cells. In front of the cells, there are 3 horizontal electrical conductors, behind the cells there are 3 vertical conductors. \n \n1v 2v 3v\n\n[ ] [ ] [ ] 1h\n\n[ ] [ ] [ ] 2h \n\n[ ] [ ] [ ] 3h \n\nIn order to actually change what a cell is displaying, you need to...
How is it possible that there are fish in isolated bodies of water? Like in a lake in the crater of a volcano with no rivers going in or out. Wow did they get there?	[ "Eggs can hitch a ride on birds feet. People could have put them there. Freak weather has been known to suck up fish and frogs. only to drop them somewhere else. Some fish, like eels, can move quite a distance over land, especially if the ground is wet. Sometimes the \"isolated\" lake will be connected to other bod...
When does our brain decide which hand will be dominant and why?	[ "\"handedness\" and \"dominance\" are nebulous terms that have no set meaning even though anyone reading this would have not trouble stating whether they were left or right handed. \n\n & #x200B;\n\nFor example, I am left handed, I write, shoot pistols and throw baseballs left handed. I shoot rifles and bows right ...
How is the antivenin CroFab® sheep-derived?	[ "It's made from sheep antibodies.\n\nYou can expose live sheep to snake venom, but not enough to kill them. Over time, the sheep make antibodies that bind to the venom molecules and prevent them from causing harm. You can isolate these antibodies from the blood, and in this case, the antibodies are further processe...
What do people exactly mean by "images" in relation to virtualization/emulation-related discussions?	[ "It's basically a backup of an already installed and setup OS which can be copied to another system all in one go, instead of the slow \"install process\" where everything is unpacked and put into place step by step." ]
We often see inter-species friendships in the wild, but it's always seems to be 2 animals. Why aren't there entire groups hanging out together?	[ "TL;DR: law of the jungle\n\nYou are talking about a Timon-Pumbaa-Simba kind of group, with 3 or more species involved? Starting from the begin, you would need 2 individuals A and B that finds each other to start with, that are already in a stable friendly relationship meaning all basic needs (e.g. eating, drinking...
How is it that the United States has the top ranked universities in the world, while simultaneously having a high school system that underperforms compared to other developed countries?	[ "The US also has a large number of underperforming universities as well. When you look at the top ranked universities, you're mostly looking at very well-established private institutions or the very top-tier of state-sponsored schools. That ignores hundreds and thousands of other institutions that would bring dow...
William Barr is in Contempt. What is contempt and how severe is it?	[ "Being held in contempt of Congress is a meaningless charge. 'Contempt of Court' in general means the witness is uncooperative." ]
How 64bit OS run 32bit programs?	[ "64 Bit mainly refers to the size of the memory bus on the motherboard. If a system has a 64 bit memory bus then it can address memory spaces that are much much bigger than 32-bit systems. It also means the internal registers in the CPU are 64 bits wide. That means the CPU can work on larger chunks of data at the ...
Why is it a big challenge to get people back on the Moon again?	[ "Money is the biggest issue. \n\n It wasn't cheap to get to the moon before (in fact it was wildly expensive), and it still isn't going to be cheap now. Technologically, its not that insane a task, we have the knowledge, expertise, and means to do it and build the items... however its gonna take a TON of money to ...
Why does fire turn from orange to blue the hotter it gets and why is the sun (a very hot thing) stay orange?	[ "The sun isn't orange. It's white. It emits the entire visible spectrum (ie. A rainbow).\n\nDifferent things burns at different colors. Potassium chloride, for example, makes a purple flame.", "The fire isn't blue because it's hot, it's blue because it's burning methane or other chemicals that give off a blue fla...
How does sunscreen make you stay longer in the sun? How does the higher number change things.	[ "> Does it block a certain percentage of UV rays? \n\nThat's exactly what it does, more specifically it blocks UV-B rays, which are the type that cause sunburns. To my knowledge it doesn't \"last\" a certain amount of time, but rather it is worn away due to water, sweat, etc over time, which is why you need to re...
Why did it take the entirety of human history to even figure out how electricity works, but then only 200 years to get to where we are now?	[ "So I think where you want to look is the age of Enlightenment as the beginning of the rapid development of change. A big part of what drove scientific progress was the printing press, being able to reliably pass information across time and space helped the spread of ideas and as ideas spread and people could recr...
How does one computer use another computer's IP address to find and talk to it?	[ "You are very much on track with your post office analogy.\n\n\nI am going to focus on public IPs only and ignore private or internal IPs for this explanation, although the process is similar. For the most part, the internet is just a large group of independent machines that talk to their neighbors, and know how to...
Why do trees stop growing?	[ "They don't. As long as there is water, nutrients and sunlight and as long as it is not getting infected or damaged it will technically grow forever. There is however some limitations to how high a tree can pump the water and nutrients from its roots. This means that there is a height limit where its branches can n...
How to analyse statistics in quantitative research. (What's strong and what's weak?)	[ "This question is far too broad to be properly answered. For different types of research it’s completely different.\n\nHowever if you want a super general explanation.\n\nAdult version: Generally when conducting research you have a hypothesis or an idea of what is going to happen/what you expect to happen. You then...
Large chains distributing to other companies	[ "Walmart specifically is known for having some of the most advanced sales metrics gathering of any company in history.\n\nEvery single sale Walmart does is recorded and sent in real time back to their servers for analysis. They have been a company on the absolute cutting edge of sales analysis for a long time. You...
What is bioinformatics and what is it used for?	[ "Basically the idea of analyzing huge amounts of data. These days in biology, we generate unbelievably massive amounts of data. For example, researchers in any field of bio might do an RNA-seq, in other words sequence all of the RNA in 2 different cultures and compare to see what changes between them. You'd get a d...
Does the mirror make you more attractive, or does the camera make you look ugly?	[ "The image is flipped with a camera, and since your face probably isn’t symmetrical you look different. I’m guessing the fact you see your face everyday in the mirror is why it seems more attractive, because it’s more familiar to you." ]
How can something like the big bang to start the universe come from nothing?	[ "It didn't. The Big Bang was because of a Singularity, containing all known matter, exploding and spreading into the universe.\n\nWe just don't know where that Singularity came from.\n\nSome believe it was created by a God, some believe it is the remnants of an older universe, some believe it to be the collision of...
Why is intubation necessary for general anesthesia?	[ "General anesthesia usually includes a muscle relaxing or paralyzing component. No muscle function = no breathing. Tube is attached to a machine that provides the patient with oxygen and ventilation." ]
What's the situation with Area 51?	[ "Area 51 is a very secretive military base in a desert, with huge amounts of conspiracy about them having alien technology and such. What we know is that they do R & D for various military planes. The \"situation\" in the popular culture is a mostly meme meetup to \"storm\" the base to \"find the aliens\". It's mos...
what does it mean if a currency is ‘strong’ or ‘weak’	[ "A strong currency is a currency that has an increased value compared to other currencies. But this has little to do with the numerical value of the currencies, despite what other commenters above said.\n\n1 dollar is usually worth 100-120 yen. If the dollar becomes worth 80 yen, then it means the yen has become st...
Why is rabies so deadly and can remain “dormant” for so long?	[ "Rabies take a long time to move through the nervous system from the bite site to the brain. During that trip, it tries to stay as sneaky as possible because a strong immune response would kill it.\n\nWhen it gets to the brain where it \"takes over\" it essentially short circuits the brain. Because the brain is a p...
If heavier elements need to be formed in stars bigger than our sun, there must have been at least another star in this region of space before our solar system formed, right? What was there? Do we know anything about it?	[ "Stars are born in gas clouds called nebulas.\n\nIt is believed the universe is 14 billion years old. How long a star lives is dependent on its size.\n\nThe sun will live about 10 billion years, we're about halfway through our suns life.\n\nA star much bigger than the sun will blow through its fuel in a few million...
What is biologically happening inside the body when you feel an urge to take a leak or dump but unable to atm and you "hold it in" - is there harm in this practice if you repeatedly hold back defecation or urination say for hours or a day?	[ "The urge to take a dump or a leak is just a suggestion. It’s your body saying “Hey, you should go soon.” But of course if the situation dictates your body hands over control to your conscious decision making systems and allows you to hold it off for a while.\n\nThe only problem with holding it in is your body will...
If the average person drinks around 60 gallons of water every year, and Joe drinks almost 100 gallons per year, does Joe’s liver or Kidneys have to work harder to process it all? Are there long term issues from drinking an excess amount of water?	[ "Including water, coffee, and other drinks I drink at least 90oz of liquid in a day (around 65oz of water). That works out to a little over 250 gallons per year (~182 of pure water). I think Joe is going to be just fine with only 100 gallons per year. \n\n(And before anyone thinks this is an absurd amount) I drink...
when drunk, if you eat you feel sober again (you probably aren't, but you feel like you are)?	[ "Dopaminergic mesolimbic pathway activation signaling \n\n_URL_0_\n\nOr...\n\nYou drink, feel pleasure, and brain signals salivation and desire for food, sex, sleep (primary functions). Your brain stem is tied in to this vagus nerve that controls feeling full or hungry. \n\nIm a lay person on this.", "Food absorb...
How are hand sanitizer companies able to claim their product is better or more effective than their competitors when they all kill 99.9% of all germs?	[ "No government oversight or enforcement of false product claims. Assume all copy on products is a lie.", "They don't. They may claim 99.9% but not of all germs. If you look at the fine text it's usually one or two organisms only and usually the easiest organisms to kill. Plain soap, water and scrubbing may give...
Do amputees with bionic appendages become less fatigued from physical activity?	[ "usually the opposite. the rest of their body still has to bear the load of whatever they push or carry, and the lack of fine control usually means they have to work harder to accomplish the same task." ]
What causes the variability in digestion/gut health?	[ "It is complicated.\n\n & #x200B;\n\nSome reasons it is complicated.\n\n1. Digestion has a lot to do with your gut biome, a lot of work breaking things down in your gut is done by bacteria that can be affected by tons of different things. The more parts a machine has the more opportunities for something to go wrong...
why does decibel level multiply way past the point of the source when there are multiple sources even though they all have the same decibel.	[ "Throw a pebble in a pond, and it will make waves. \n\nThrow two pebbles in that pond and when their waves meet, they'll make extra big waves and extra big troughs. \n\nThe bigger waves in this case and troughs are bigger pressure differences we hear as sound. \n\nSame idea. \n\nYou can actually align the speakers ...
Why is beef okay to eat if it's not fully cooked through, but not other meats like chicken or pork?	[ "Undercooked chicken can carry salmonella. Undercooked pork used to have the propensity to carry trichinosis, although I believe that’s no longer an issue in the US pork supply. Ecoli can exist in undercooked beef.", "Please, if you know a restaurant that will will serve me a medium-rare hamburger, lemme know!"...
What happens when you drink too much water and what should you do?	[ "What happens: You will loose all the minerals in your blood as it becomes diluted with all the water you drank and pissed away. This could result in fainting or worst case in cardiac arrest.\n\n & #x200B;\n\nWhat you should do: Call an ambulance, stop drinking, eat salt, rest.", "People have died from drinking ...
Why does grass die when it gets urinated on?	[ "As the other commenter said, yes nitrogen. \n\nBut to add to that, if the lawn has actually been recently fertilized sometimes all it takes is one pee and you have a totally burned out section of grass.", "There is nothing better for grass than urinating in the rain on it. \n\nMale dogs cock their leg to pee, th...
Why haven’t we returned to the moon in recent history if we were able to decades ago?	[ "Because it’s horrifically expensive and there is no material value on the Moon.\n\nIt’s a dead planetoid with no real resources to speak of.\n\nMars is of interest because since it’s core is mostly inactive it will be a mineral gold mine literally and figuratively.", "Last time we did it, it was to prove we were...
Why just landing on the moon is a big deal and how will it benefit us?	[ "So imagine the earth is surrounded by a thick soup (our atmosphere) it takes literal tonnes of fuel just to be able to break through that soup and get into a zone that's soup free (space). The moon has no soup whatsoever. If we could set up a launch pad on the moon the amount of fuel it would take to launch and ...
Is there a reason some days “feel” like they go faster or longer, when the same passage of time is passing?	[ "It depends when you are contemplating the duration of the day.\n\nMost of the time when people look back on a day and say “that was a long day,” the day in question was filled with memorable moments. Thus, retrospectively days with more going on will seem longer because of how many notable moments were when re...
Do memories occupy a physical space in the brain?	[ "Memories are pretty much connections between nerve cells, the more numerous \n(edit: and stronger) the connections the better you can remember something. \n\nSince this is a physical connection, theoretically there is a limit to how much we can remember. However we dont know how much of our brain is available to s...
If bugs always fly towards things like porch-lamps and streetlights, why wouldn’t they just all fly toward the sun?	[ "The sun is so far away that it appears stationary when they are flying, so they use it as a reference point.\n\nIf you do the same thing with a light that is close to you, you tend to spiral in towards it until you hit it.\n\nAs an example, If it's off to one side in front of you, then as you move past it, it star...
How come sometimes we feel more awake after 5 or 6 hours of sleep than I do after a "full 8 hours"?	[ "Your brain's sleep time works in cycles, it cycles between stages 1 and 3, with REM cycles.\n\n & #x200B;\n\nStage 1 isn't exactly sleep, it's the process of your body falling asleep or waking up. Stage 2 is when your body is actively asleep, and stage 3 is \"deep sleep\", when the brain does most of the work it n...
How does a buoyancy device (like a submerged airbag) work?	[ "Because the surface area is the critical component of buoyancy. Buoyancy is the result of a pressure differential. When there's gravity, pressure isn't actually the same from all sides. The pressure underneath a submerged object is slightly higher than the pressure above it. This results in a net upwards force. If...
Why can’t some animals be domesticated?	[ "Your friends, Carl, Paul, and Doug in your kindergarten class are all different kinds of boys. Carl is a very aggressive angry boy who bites, Paul is a nervous wreck who gets very uneasy around people who aren’t in his immediate family, but Doug is super easy going and easy to keep happy with a few snacks every no...
Why are our bodies so bad at fighting cancer?	[ "Cancer cells are human cells that have mutated out of control. Human cells have tags on them that tells your immune system not to attack it. Cancer cells will have these tags so your body just ignores it.", "Your body is extremely good at fighting cancer.\n\nEvery day, a few of your cells become cancerous but yo...
Is rabies naturally occurring? Or if every organism that had rabies died at once, would it be wiped out?	[ "Rabies is a natural virus has been around for a very long time. An animal (mostly bats, sometimes raccoons or other mammals, only occasionally dogs) that has the disease caries rabies virus particles in and on its body, and their saliva or claws transmits it when they bite or scratch someone. Those particles repro...
What’s the difference between paranoia and reasonable suspicion?	[ "Reasonable suspicion is based on, well... reason. It's something that your average person would understand as being suspicious.\n\nParanoia is irrational and based on somebody's twisted perception of reality.\n\nLet's say you're walking around at night & some dude has been following you for the last 5-6 blocks....
How is a species determined to be extinct? How can we truly verify whether or not there are other members of a species still present in nature, especially small creatures such as insects?	[ "I can answer the first one. If a species is not seen for a large amount of time (and was thought to be endangered already) especially in places that it once lived, it can be assumed that there may not be any of its kind remaiming. There are actually a couple instances of us assuming something is gone but finding i...
how can someone die from a shockwave?	[ "A shockwave is essentially a wall of compressed air (or some other medium, but the same principle applies to other fluids). Although you do not notice air normally as you breathe it, exist in it, etc., it can be quite like a solid when compressed adequately. An injurious or lethal shockwave is essentially the extr...
why are phone calls still low quality?	[ "Better quality calls requires better phones and better carrier networks, both of which would cost money. Not enough people are demanding better quality to make it profitable enough for most phone companies to pursue.", "There hasn't really been a need to make it better. Good alternatives exist if they are necess...
How did post pigeons worked?	[ "“Homing” pigeons do just that, they always fly home. So you’d raise pigeons in each town and then once they established a home “nest” they always fly back to it. \n\nOnce pigeons reached adulthood they would be transported over land to various towns so each town would have a few pigeons from various others. If you...
A few nights ago late at night, I was alerted by a bright light on the side of my house which was possibly a person. My congested nose almost instantly became clear and I was able to breathe freely until I calmed down and it became congested again. Why did that happen?	[ "Fight or Flight kicked in, and the spike of Adrenaline will have caused the constriction of your nasal membranes, opening up the passageway, and allowing air to travel more freely." ]
- Electromagnetic waves: if the electric part is inseparable from the magnetic part, do magnets have electric fields?	[ "Yes. A charged particle (an electron) is what creates your electric field. When that charged particle is put in motion, it creates a magnetic field.\n\nIn the case of magnets, the field is created by the orbit of electrons around the nuclei. In most cases the nuclei are pointing in random directions, so the indivi...
Why do skyboxes break when going out of bounds?	[ "What should the video card display in those areas where there aren't any objects or textures? There is no information to be shown so that part of the display register just isn't updated, meaning it keeps whatever value was put in their last. That is what you are seeing with the \"broken\" areas of the image.", "...
why doesn’t everyone have an eidetic memory? And what is the difference between a “photographic” and eidetic memory? (If there is one)	[ "Photographic memory is Just the popular term for eidetic memory, the scientific term.\n\nEveryone does have eidetic memory to some extent. It just means retaining a picture of something in your memory. You may've played a game in which a bunch of items were placed on a table, then covered after thirty seconds or s...
How did humans manage and balance accounts before the concept of zero?	[ "Before the concept of zero, most exchanges of goods and services weren’t backed by money. One person would bring some items, which they would discuss the value of with someone else, and decide on an exchange that both parties found mutually beneficial." ]
How is calculus used in machine learning?	[ "Calculus is most prominently used when dealing with backpropagation: calculating how you should change the weights and biases of the network to move towards your goal. \n\nThis is a complicated subject, so the brief version is:\n\n* you have a network, that is feed some input, and gives some output. this is essen...
Why do old movies and videos have this sorta staticky sound in the background and modern ones don’t?	[ "A lot of reasons: \nOld movies had the soundtrack imprinted on the film, it was analogue and intrinsically noisy - like cassettes, the same was true of video. Also copying the film to make a new print or change the format would introduce more noise. To deal with that Cinemas had quite sophisticated analogue noise ...
Why does brass squeak so loudly when it is machined on a lathe?	[ "It shouldn't, but squeaking is a pretty common problem with lathes. Typically it is caused by starving the lathe (feedrate is too low), setting your lathe too slowly for the material, or setting your bit too high/using the wrong bit size in general. When correctly set up, a lathe won't squeak with brass. \n\n \nI...
How did Area 51 get associated with aliens?	[ "Because of the secrecy around the base which wasn't recognized as existing by the CIA until the 90s and because of the 1947 Roswell incident where the US claimed it was a weather baloon that crashed in New Mexico but conspiracy theories soon arose claiming it was an alien UFO taken to Area 51." ]
Why doesn’t the severity of ptsd and anxiety attacks decrease after each episode?(Like facing a fear)	[ "Because the brain is complicated. It’s mental trauma. Some people never recover from physical trauma, same with mental.", "Because the brain doesnt differentiate between experiencing trauma and remembering trauma, to the brain it's all the same thing.\n\nAlso, I'm not sure what you mean by dealing with it \"natu...
when betting in sports like MMA what does it mean when someone is -135 vs +155?	[ "It’s called a money line.... -135 means you wager $135 to win $100. +155 means you wager $100 to win $155" ]
What pushes strong wind into existence?	[ "You are on the right track. Air flows from high pressure to low pressure, and the atmosphere is constantly being disturbed by things like the sun heating up the ground, which heats the air, which then rises, which leaves a low-pressure spot for air to flow into. Heating and cooling happens unevenly, partly because...
Since depression damages the brain, is there any way to repair or gain back what was lost? Like, physical therapy for your mind?	[ "Yes, absolutely, that's the idea behind cognitive therapies, which have been shown to be very effective (and getting better with further developments) in treating depression.\n\nThe brain isn't a static thing, it's always changing and adapting. New connections are formed, strengthened, and weakened in every moment...
How does diabetes appear in your body if you are healthy?	[ "Being “healthy” reduces the chances of you getting a disease, it doesn’t eliminate it.\n\nDiabetes has 2 forms, Type 1 and Type 2. Type 1 is an autoimmune disease, where your body wrongly identifies your insulin-producing cells as foreign and attacks them. The exact trigger is unknown, and it can happen to anybody...
What will happen if we pass electricity through a magnet?	[ "You mean a permanent magnet? Then you induce a weak magnetic field following the Hall effect, it adds to the existing field but at the end it is irrelevant magnetically. So nothing more than passing electricity through a piece of metal.", "You induce a magnetic field. An electric current generates a magnetic fi...
During the PS1 era, one of the upsides the N64 had that the PS1 didn't was that cartridges had no loading times as opposed to CD's which had more capacity but had to load all the data. Why do now the cartridges on the Switch, for example, have to make use of loading screens?	[ "Back then, the ROM storage on the cart was about as fast as the RAM in the console. So there wasn't really a need to load data, because it was already readily accessible by the CPU.\n\nSince then CPU and RAM speeds have increased significantly. The speed of permanent storage has also increased a lot, but not by as...
How does mysophobia work?	[ "Phobias are diseases. Mental illness is literally defined by rationality, cognition, and/or perception not working properly." ]
Why do things go darker when they get wet?	[ "Let’s think about this. Both surfaces you mention are very porous. And if you think about the ones that don’t get darker they are usually the ones that are very smooth like plastic or buffed steel. We know that the difference between dark and light things is the amount of light they reflect. So I’m thinking that i...
What exactly does a 360 Record Label deal entail and why do artists keep signing them if they’re bad for them	[ "It's a kind of holdover from back in the day where there was no path to fame that didn't go through a record label.\n\nIf you were an artist, you would toil away in your local music scene, perhaps doing some small club tour, but your goal was always to \"get noticed\". That notice would involve someone from a rec...
what is r/lounge?	[ "A subreddit only accessible by premium users.\n\nIt doesn't have strict content rules. Mostly people just post random questions, pics, or what they are doing right now.", "if you get a medal from someone or buy it yourself you gain access to the r/lounge. there is nothing interesting in there, mostly people acti...
how do certain substances cause your skin to feel cold or hot without changing temperature?	[ "Sports rubs have natural and chemical ingredients that cause a reaction from the skin and nerve endings. For the heat many products contain capsaicin. This is the active ingredient in peppers that cause your mouth to burn, but we know that it isn't actually burning. Our nerve endings are pretty simple, they cann...
How do Generators in GAN work?	[ "Imagine it like a competition between the classifier (CLASS) and the generator (GEN). GEN has the job of \"Take a random input, and use that to make an image that fools CLASS\". CLASS has the job of \"Given an image, determine if that image is real, or created by GEN\". \n\nInitially GEN only produces random noise...
Why does English have different suffixes for languages (-ese, -ish, -an)?	[ "The \"true\" English demonym suffix is -ish, e.g. Spanish, Turkish, Welsh, Swedish.\n\nHowever sometime in the last few centuries English speakers stopped applying that suffix, and instead started borrowing existing demonyms from other languages, mostly French.", "[\"English is a Germanic language, its native su...
How are trig functions able to model things like waves?	[ "Watch this video\n\n_URL_0_\n\nTriangles, circles and waves are all related. it's misleading to call those math functions \"functions that originated from the ratios of right triangles are able to be used to show waves\" The reality is that those functions describe all 3 things, they did not come from one or ano...
What is gaslighting?	[ "Gaslighting is a psychological manipulation technique. The core idea is that through denial, manipulation of events, and other methods you cause a person or group of persons to doubt their own memory, perception and sanity.\n\nIn other words - you make people not believe their own thoughts.\n\nThe end goal is to ...
Why do some trees have bad odor? A big tree near my house has a very bad odor, like a dirty towel kinda smell. Is it a defense mechanism or something?	[ "A lot of trees rely on insects to pollinate them. What smells really bad to you probably smells delicious to some type of flying insect.", "Yeah but are there any notoriously stinky species? Like there are trees near my house that smell like straight up butts, if I could recognize them I would avoid them" ]
how do “dead spots” on tennis courts happen?	[ "They develop over time. As it gets colder and warmer the court expands and contracts. These movements form cracks in the generally immobile structure of the court. You’ll quite often see these open cracks on older courts. There’s also subsurface cracks too. Those are the unseen dead spots. Just like how potholes f...
Why is metric time not used in science outside of computing?	[ "It isn't clear what you mean. The usual unit of time used is the second which is part of the SI system. Nearly everyone uses decimals of time and use things like nano seconds and pico seconds etc which are exponents of 10. \n\nWhat is your understanding of non \"metric time\"?" ]
How much of our forgotten memory/memories can we access through hypnosis?	[ "The most likely result from hypnosis would be the creation of fake memories you then believe to be real." ]
The gun argument in the USA	[ "These are not my personal feelings, just my observations of how some people in the US feel:\n\n & #x200B;\n\n* Some folks are worried that when we start to restrict guns, in any meaningful way, its the beginning of much stricter rules down the road.\n* It's far easier to slowly increase gun restrictions once some ...
What happens when you're suddenly not hungry anymore?	[ "Read up on Intermittent Fasting or One Meal a Day diets. They discuss this quite a bit.\n\nBasically we aren’t “hungry” by the definition most people with internet access know the word because we are out of energy. We are hungry because hormones (?) in our body tell us that it is time to eat. Those release on a...
Why does a yawn trigger teary eyes?	[ "When you yawn, the facial muscles around your eyes can tighten, occasionally putting pressure on your lacrimal gland. This gland is what keeps your eyes moisturized throughout the day, so when excess pressure is applied to them, it can cause tears.", "ELI5: Why did I read the title to this thread and immediately...

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