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How does taking deep breaths in and out of brown paper bags ease the anxiety you’re feeling | Oh! I just saw this on Emergency! When you are anxious you can breathe too fast. This flushes the CO2 out of your body. Your normal breathing reflex is controlled by the amount of CO2 in your body, so without it, you don't feel the reflex to breathe. This makes you feel like you're suffocating and you panic and breathe... |
In moments of certain death people have played music , Why ? | 1. For many musicians, playing music is their favorite thing to do. Only an hour left to live? Do something you like!2. It keeps the crowd calmer, which helps to evacuate more safely, and if you do die, your last minutes weren't spent in a panicky mob. |
Why is it more expensive for me to fly non-stop a short distance, than it is for me to make a connection four states away and come back? | u/Kitworks touched on it, but I'd say it's probably the same reason UPS or Fedex send everything through major hubs. Even if your package is only coming from 100 miles away from you, chances are they couldn't reliably fill a truck/plane with stuff going from that place to your town. Instead everything goes into a big p... |
Dear ELI5: Why are some people upset with the Dali Lama? That guy seems like a pretty nice dude. | Historically, his position is not just that of a spiritual leader, but at times a political one. This has included significant positions in the government of Tibet. As the political status of Tibet is disputed , so too are some folks critical the Lama. Some are of the disposition that they are a dangerously positioned ... |
Why do cockroaches turn upside down when they die on their own? | Hello, resident entomologist here. Insect muscles are attached to the inside of the jointed exoskeleton, and when they die and rigor mortis sets in, their legs tend to straighten out. So they tip over. In other words, it takes effort for them to keep their legs tucked in. So if you see an insect upside down, but it's l... |
Why is it considered "childish" to like ketchup and put it on a variety of food? | Because it's essentially sugar and overpowers many flavors. Sweet is a predominate flavor in a child's palette", 'Because people are always looking for new ways to judge others and chastise them for having likes or dislikes dissimilar to their own.It ultimately depends on the types of food you're putting it on. For exa... |
Why can they lose 10lbs+ a week on the Biggest Loser when weight loss resources for us normals say not to lose more than 2lbs a week? | What's more discouraging is the more common scenario, where you think you're going to lose 10 pounds a week and then gain 1 because you don't realize how hard dieting is. The Biggest Loser, like all TV, is about entertainment. A realistic diet program would have half the people losing no weight and maybe the best 1% lo... |
Why do overweight people have trouble breathing after exercising, etc? | This seems pretty obvious no? 1 - they are out of shape so their cardiovascular system isn't great. 2 - They are putting in more work going up those stairs than you because they are moving more mass. Your muscles work on oxygen. They aren't so good at making that oxygen work and they need more of it to move more mass. |
How come poor people in the 1800s/early 1900s still wore what we would consider dress clothes regularly? | People who weren't wealthy had far fewer outfits. Some women would have a regular house dress and a dress for going to church, visiting, etc. many people married in their best clothes and didn't purchase wedding gowns, etc. And as u/ramblingmutt mentioned photographs were a very big deal being so rare, so you'd certain... |
How can my nose produce mucus at such an alarming rate when I have a cold? | Follow-up: if it's been a few days since my cold and I feel fully recovered, why am I still a snot factory and am I still contagious?", 'I searched this up when i had a cold. Your throat already produces mucus to line itself and protect against bacteria. When you have a cold, it produces lots of mucus to protect itself... |
Why are there 7 days in a week | A year is 365 days. A month is 28 days. A season is 3 months. It's useful to have a period smaller than a month. 7 splits a month into 4 parts evenly.There are 13 lunar month in a yearBecause God created the world in 7 days.> A month is the time it takes for the moon to go around the earth. That's also the amount of ti... |
How do illegal drugs become such a huge industry? | the target audience isn't really that small. it encompasses millions of people globally. Law enforcement isn't always an issue. People can be bought, they don't usually cooperate very well between departments, provinces, states, countries. Sometimes it's law enforcement that are the suppliers. There's also the distribu... |
Why don't wild animals (e.g. lions) get salmonella and other diseases from eating raw meat (e.g. zebras)? | Generally, raw meat doesn't contain any germs when it's fresh. All healthy animals are sterile on the inside The risk of salmonella comes from transportation and keeping meat for a long time. |
Why are exotic fruits like Salak and Hala not available in the US? | Transporting perishable goods like fruit is pretty difficult but demand is high enough for the common ones to make it profitable, but relatively unknown fruits like the ones you mentioned aren't profitable enough to buy and sell except in overpriced niche markets. You won't ever find a durian in a walmart but you'll of... |
Why doesn't FIFA fine floppers the way the NBA does? | I would guess that at a practical level, the NBA and players' union have collectively bargained to allow for fines on dives. On the other hand, FIFA is more splintered , so it is more difficult to pass legislation like this. How would you get England and Japan and Algeria and Trinidad all to agree on how much to fine p... |
why in the last 25 years have humans developed so much technology and electrical appliances. | Rapid technological progress started in the mid-1700s with the Industrial Revolution. Yes, there was technological progress before then, but it really took off after the mid-1700s. If you think there's been a lot of technological progress in your lifetime, consider that when the moon landing happened, there were living... |
Why are pelts worn with the fur outside? | There's a couple of reasons, AFAIK. Pressing the fur against your skin reduces the amount of trapped air, so it'd be less efficient. There's also some research suggesting that the main reason fur are such good insulators is that they scatter infrared radiation. In which case you definitely want the fur/feathers facing ... |
Why do women mostly have only antiperspirants to chose from while men have deodorant and antiperspirant options? Why the lack of deodorant options for women? | From a marketing stand point, which sounds better? Helping them stay dry or implying that women are stinky? Men are somewhat expected to get sweaty, as that's a sign of hard work and as we all know, you're not a -real- man unless you work yourself to death. So it's okay for men to be sweaty, just not stinky. Not saying... |
Why do computers take longer to register an incorrect password on login rather than a correct one? | They don't. They take longer on purpose in order to avoid people trying lots of passwords fast to guess the correct one. |
What's going to happen to me if I spend a day in Chernobyl without wearing any protective gear? | You'll turn into a superhero and proceed to fight crime.One may certainly visit the Chernobyl area, including even the exclusion zone, which is a 30 kilometre radius surrounding the plant, all of whose reactors are now closed. Although some of the radioactive isotopes released into the atmosphere still linger , they ar... |
Why are banks allowed to use money in way they cannot give people their own money back? | Because the alternative is that the bank charges you a bunch of money in order to have an account, which isn't something very many people would agree to or be able to afford, so banks would get really expensive and people wouldn't have a place to store their money safely. |
Why is sexual abuse so rampant in the Catholic Church? Is it as common in other organized religions? | It's not that it's more common in the Catholic Church. That's kind of a misconception based on its prevalence in the media, but I've heard that abuse by priests is no more or less common than abuse by other people in similar positions of authority. The issue and the reason it's so prevalent in the media is that there h... |
How did Reddit help to recruit 17,000 Macs for botnet? | According to the article infected machines are finding others using reddit search. There is no information how exactly they do that. There can be many ways. Those are all already infected machines. They don't get infected through reddit or infect anyone through reddit. They just use search engine to find each other. |
What's happening to our atoms when we're being shocked by electricity? (E.g. small static shock vs. Struck by lightning) | Their electrons are moving from atom to atom. Our bodies have natural electrical currents running through them all the time, to move our muscles , and sending and processing brain waves. If the path that the electricity takes through your body goes through your heart, the beat is disrupted and you'll fibrillate as the ... |
What happens to my trash? | Depending on what trash it is, here in the UK we've got separate bins now for different things. I think the household waste goes to landfill like it's always done. I know plastic and cardboard go to specialised warehouses run by these disposal companies, they have machines called Balers, that compress cardboard or plas... |
why it takes babies 2-3 years to be coherent in their first language, but it is much harder for an adult to learn a new language. | I'm not sure what you mean. I learned a second language at the age of 19. I was able to communicate reasonably well within 6 months and I was fluent enough that natives weren't sure if I wasn't also a native within about 18 months. The trick is to be immersed in the language and to use it almost exclusively while learn... |
How do companies with secret formula keep it secret when producing a product? | As far as food goes , it's all hype. Is there a Coca Cola recipe in a safe somewhere in Atlanta? Probably. Can only a couple of employees have access to it? Probably. Does Pepsi know EXACTLY what is in Coke? absolutely. Even before high tech analysis, you could reverse engineer products . Now you simply stick it in a m... |
why do movies and shows simulate phone/computer screens with poor quality apps rather than use the real thing? | All the issues already cited, AND, most computer applications simply don't show up well on screen. Imagine trying to film this very Reddit page? There's a lot of visual clutter, with logos and ads and bolded words and greyed out words. The first thing that leaps out at me when I glance at this page is the big 37 POINTS... |
Why doesn't youtube let you buffer through an entire video? | It used to buffer the entire video, but at some point they realised that a large amount of videos aren't watched all the way through, so they changed it up. IIRC this was around or after the time when fast internet was much more prevalent so a lot of people didn't really notice. I don't recall any major fuss being made... |
Why does NASA launch spacecraft from Florida when it has some of the stormiest weather in North America? | It's really far south. The closer you are to the equator, the easier space launches get. The parts of Texas that are that far south area pretty stormy too. |
Why don't people forget languages? | There are two main parts of the brain used in speech. Broca's area and Wernicke's area. Broca's area controls the production of speech and damage to this area would result in knowing what you want to say but being unable to produce the words. Wernicke's area controls comprehension of language an damage to this area wou... |
Why are churches allowed to give wine to minors for Communion? What's stopping me from starting a church and smoking pot or snorting crack as part of the ritual? | This isn't a silly argument. This is really at the heart of Employment Division v. Smith, a case about the denial of benefits for the religious use of peyote. The majority in that case said that neutral laws of general applicability do not violate the first amendment, so a law prohibiting the use of marijuana doesn't v... |
Why does it always feel like people in rural areas are more conservative while people in urban areas are more progressive? | I'll also interject that people in rural areas are more likely to be property owners, while there would be more renting in urban areas.I 've lived in both. Giving Sweden as an example there are a few trends I 've noticed. - Big cities have universities where young people attend. Young people are often more left leaning... |
Why do gender-designated single person bathrooms exist? | Culturally, westerners feel more comfortable doing their restroom activities in the presence of only people of their gender. This varies by culture; when I was in Japan a year ago I was surprised to see women cleaning the men's room while men were using it. This wouldn't really fly in the US but it didn't concern any o... |
Why do iPhone's retain their value as opposed to Android phones? | Apple generally does not make phones for the mid-range market, instead they market older models of the iPhone for that segment. They can do that because there are no competitors who can sell their own iOS phones for a lower price. This way, they can keep demand for these old models high, and sell off their stock for a ... |
What causes that sunscreen smell in everything with an SPF? | Sunscreen usually contains some kind of aromatic compounds to absorb the UV-light, some of these aromatic compounds also have smells, I can't say exactly which one smells like SPF but I would imagine it be either the aromatic they put in or some of the Derivatives of the degraded compound.Am I the only person that love... |
How a company like Urban Outfitters can repeatedly steal work from independent artists and face no consequences? | A lot of big-name companies engage in this sort of behavior. If legal action arises, they typically settle out of court. They don't care as long as the profits exceed the payment, and many independent artists either don't know about the theft or don't have the time and resources to push for legal action..) |
Why do people go to ridiculous lengths to block their license plate when selling their car online? | It's stupid, not sure where it came from. It's not like our plates are hidden in real life and only exposed online. Plus in real life I can drive by your house, get your plates AND your address. |
Why can't you read in dreams? | I feel like a lot of people are posting their experiences in dreams and assume that it's a universal condition. I have never experienced hardly any of the things posted. Dreams seem, to me atleast, to be pretty varied in nature.It's a myth from those people who are concerned that we need to be able to "prove" that we a... |
What the heck is an 'open source platform' for website building? | First, Open Source means the code used to build something is available for download or viewing. Usually it implies that improvements and fixes to said application may come from the community, but not necessarily. I won't go further so it's not confusing. A platform for website building would be a set of tools used to c... |
Why is procrastination so pervasive, and how does one overcome it? | I wrote this in another thread about animals sitting around looking bored or lazy. Put simply, we don't want to work because it's unnatural! It's something we invented to learn or make money etc but if you think about it in a completely animalistic way, we'd all prefer to do pleasurable things. I.e. lounging around, ta... |
Do manufacturers build low quality items for Cyber Monday deals? | Walmart does sell different Levi's than other stores. That's why some Levi jeans are $45 at a nice store and 10 or 15 at Walmart. Less quality, less stitching, poor denim. |
How do painkillers 'seek out' the source of pain? | This isn't 100% accurate but it's the best LI5 explanation I can do: When you get hurt , a soup of chemicals get released in the area from broken cells. When those chemicals come into contact with pain receptors, that causes the feeling of pain. One type of painkiller will block the formation of the pain-causing chemic... |
In video games, what exactly loads during the load screens of say, the transition from walking into a house from the outside or fast travelling/teleporting? | Depends on the game and how it's been coded in general it's assets being moved in into memory. Things like models, sounds, textures, and so forth that the game needs for the upcoming section. |
If you make money from short selling a stock, where does the money actually come from? | Say I borrow your bike, then sell it to a guy down the block for $140 bucks. I don't owe you that money. I owe you a bike. Later that year, the bike store has a sale. I buy back the same kind of bike for $135 and give it back to you. In the end, you have the same model bike, and I get to keep the extra $5 I saved buyin... |
If I step on a bug, why is there just a blob of goo? Do insects not have organs like mammals do? | You're just a blob of goo yourself. If something were to rupture your outsides, your insides would pour out the same as a bug's. |
Why do we sometimes see the Moon During Daytime ? | The Moon orbits the Earth once every 28-ish days. The Earth rotates under the Moon once per day. The Earth's rotation makes the Moon rise and set, and the Moon's orbit makes the times when the Moon rises and sets shift throughout the 28-day orbit. So every day, the moon rises a bit earlier and sets a bit earlier, until... |
Why can't we wear sports bra all the time instead of normal bra? | You can if you want. No ones stopping you. If a sports bra is what's most comfortable then go for it. Appearance while they're not considered the most attractive look but that's all subjective and what's attractive in clothing changes constantly. |
How come carnivorous plants know that insects actually exist? | I think you are asking the wrong question here. I don't think carnivorous plants *know* anything at all. They don't really have brains. They evolved to get nutrients from their environment that just happen to come from living insects. Same way plants evolved to use insects for pollination - those plants with mutations ... |
say if Kim Jon Un got assassinated; what would happen to the country? | North Korea is an unpredictable country in many senses so we're not completely sure what would happen. Likely, the military leadership would assume power and purge opponents out of the government. The North Korean government would likely blame the US or South Korea for the assassination and there'd be a strong possibil... |
How and why did humans think of keeping animals as pets in the first place? | Cats have interesting story. Human didn't adopt cats in the beginning, rather cats adopted us because we tended to live in groups, leave waste, and attracted mice and rats. Over time they self-domesticated and became became popular to keep as pets and also popular for funny video.IIRC there was a good explanation of do... |
How do submarines survive the pressure in the deep sea? | Take a can of beer. Try to crush it It's pretty hard right? Now open it and drink the beer. Try again and it's still hard if you don't bend the can a little first. You can't just push down on the lid and crush it into a puck. A submarine withstands the pressure because of structural strength, and by internal pressure w... |
what is the difference between rubbing alcohol and drinking alcohol | The carbon structure is different in isopropyl alcohol such that when an enzyme in your body called alcohol dehydrogenase metabolizes it it changes it into molecules that react with our bodies in harmful ways. The whole deal is that ethanol goes through less harmful intermediates as it's metabolized. If you want to see... |
Why are people who want to be amputees not allowed to have their limbs removed but people who want to be women can have their penises removed? | It comes down to what doctors think. A trans person doesn't just get to have gender reassignment surgery. It starts with a lot of therapy, and the therapist need to make a medical decision for them, and the treatment for their issues would be improved by the surgery. If they have BIID, doctors would need to determine t... |
Why do articles on mobile devices always have you click to continue reading an entire article? | I think it's different to what others are suggesting. I suspect what you're talking about is an article which isn't fully shown and you click for the rest. This is revealed, and isn't on a separate page with new ads. I suspect the answer is that they want to know how many clicks are genuine. You can follow a Twitter or... |
Why can't I get a soft drink with half the sugar? It's either sugar overload or artificial junk. | Both Coke and Pepsi tried this several times the last decade. They don't seem to be very popular. |
PCP, and why it gives you "superhuman strength." | * you ignore pain* you ignore injury* you lose the judgement quit fighting once you have been effectively subdued* cops tend to overwhelm with superior numbers when they can, so all ten of them might have been helpful, but not necessary Also, they don't tell stories about the PCP addict who tripped over his own feet an... |
Why are the Japanese and the Koreans so heavily into cosplay, video games, etc. but the Chinese are (at least seemingly) totally apathetic in comparasion? | Cosplay and videogames are hobbies that only people in wealthy countries can afford. The average income of a Chinese person is significantly lower than the average income of a Japanese or Korean person. There's just far fewer people who can afford to spend money on leisure and recreation like that. |
Why do people absentmindedly keep their hands busy- grass pulling, bubble wrap, tapping the keyboard? | This phenomenon is not easily understood, but there are several theories as to why people fidget. It's a coping mechanism for people with anxiety related disorders such as ADD or tourettes. Speech and movement are both processed in the same areas of our brain. Therefore, fidgeting can help reduce excess energy or anxie... |
Why do drivers ed. programs place so much emphasis on parallel parking? | It is still required by most States to know how to parallel park, and you can expect to be tested on it, even though it's not required, usually if you fail at parallel parking you likely will automatically fail due to the fact that you not only will lose points for failing parallel parking but a number of other driving... |
Why did early traders sail around the southern horn of Africa, when traveling to China and India, rather than make the *very* short land trip through what is now the Suez Canal? | While the vikings could move their longships a short ways on land, it turns out that it's a lot harder to drydock a galley, place it on a galley-sized ship moving contraption, and move it 120 miles overland. Alternatively: Because they didn't have a boat once they got to the other side. I'm not really sure why they did... |
How can individuals like the Whites from "The Wild and Wonderful Whites of West Virginia" and the Moonshiners from Discovery blatantly perform illegal actions on film and still get away with it? | Many have said that they have deniability to the acts being real but also the statute of limitations plays a role. Most of the illegal activities aren't fellonies or don't have a very long statue of limitations so if production waits until that time has passed to air the show there is nothing anyone can do about it. |
What is in the extra chromosome inside people with down syndrome? | All humans have two copies of each chromosome. But people with Down's syndrome have three copies of chromosome 21. It is not all junk DNA and encodes many genes. It is however the smallest chromosome in humans. There is a lot of interest and active research in trying to understand which genes are important for causing ... |
2016 Presidential election FAQ & Megathread | As someone who heard about the Hillary's leaked emails, what did they say, and what did they mean? |
Why do animals love to be pet/rubbed/scratched? | They're social animals. Social animals frequently enjoy physical contact, and use it to create bonds. Same as people. |
How can you tell if a large body of water is frozen enough to walk safely on? | You need to drill a hole. It's the only way to be safe. see [this chart] to know how much ice is safe to travel on. I go ice fishing a lot and i won't step out unless there is at least 5 inches. I went fishing yesterday and there was 26 inches of ice. |
why is Quebec's separatist movement often respected as legitimate, but Texas's is seen as laughable? | I think it is because most people's view of the Quebec separatist movement is based on the Referendum of 1995, a bunch of people going to a ballot box and expressing their opinion. The Texas separatist movement has been made up of groups like The Republic of Texas organization from the 90s who espoused Waco conspiracie... |
What makes a person left handed and why? How is it possible considering most people are right handed? | I have quite a handful of lefties on both sides of my parent's families. Including my mom. I had such a hard time learning to write and it wasn't until I was an adult that I realized in school I was forced to use my right hand when I feel like I'm left handed. I sucked my left thumb growing up and I noticed my other fr... |
Why do cars not have oil level sensors? | It would only work after the car has been turned off and sitting for a few minutes - I guess you could use it to check the level before you start the car, but you can already do that with the dipstick. As soon as you start the engine, the oil gets thrown everywhere inside the case. I don't know much about planes, but t... |
How does the International Space station maintain it's altitude? | The ISS moves at about 4.75 miles per second. The earth is round. This means that the ISS is moving sideways fast enough that the earth drops out from under it at the same rate it falls. Imagine you are standing on top of a pointed roof, and you are standing right at the point. If you jump in front of you just a little... |
Why can't someone who is HIV positive donate blood to be used by other HIV patients that need blood? | They'd rather not even have HIV positive blood in the system to avoid any mistakes. There are enough clean donors.HIV mutates at a very high rate. So the goal of each HIV+ patient, undergoing their own treatment plan, is to suppress the viral load as much as possible. Transfusing a whole different presentation of the v... |
What is/would be the clock in my CPU? How does it work? | The clock is just an electronic signal that alternates between off and on at a specified number of times per second . Based on the way computer chips are made, each individual circuit makes a change when it notices that the clock goes from 0 to 1 . That's when it reads numbers from registers ; does arithmetic ; and doe... |
Why do we allow the media to not source their findings/articles? | Because it would be a violation of freedom of press. What if a journalist wanted to post an anonymous contact's story about something that could put their life in danger, but they were forced to disclose the source? It would have a chilling effect on journalism. |
Why have cars in the past decade included more features for handsfree mobile phone use if talking on the phone while driving is dangerous? | Because two things primarily 1: it's more dangerous to talk on the phone while holding it compared to hands free, and many people will talk on the phone while driving regardless of the presence of these features OR the law. speaking of the law 2: The laws as they usually are written specifically ban using a phone unles... |
Can/Will there ever be a sub-species of humans? | It's not at all likely in the global environment we live in right now. But if -- for whatever reason -- a group of Humans becomes separate from the rest of Humanity for a long enough period of time, it may well happen.There used to be. Humans are Homo Sapiens Sapiens, which differentiates us from our direct ancestor, t... |
Why American's don't like soccer/football | Mostly because we already have more than a few sports that are very well organized and have large fan bases. There really are only so many sports that you can actively follow and keep track of. That and it's boring. Edit: sorry had to add that last part. Couldn't help myself! |
Why can't we treat all cancers similarly? | You're pretty spot on with an extremely superficial description of cancer. This is exactly why we can't have one universal treatment, because each cancer has different mutations, so in order to stop the uncontrolled cell division we have to fix different things. There are some semi-universal treatments, like irradiatio... |
What is Entropy and why can't it be decreased? | For an excellent story that talks about entropy, I would recommend [The Last Question]. It's one of Asimov's best works, and could help explain entropy a bit better. |
How come PC components can get fried with the static left from a simple brush, but take 220V steady current all day long? | Firstly, the only PC component that's taking 220 V is the power supply. It converts that to 12 V and some 5 V for the actual microelectronics to use, so that's what we're comparing against. As for static shocks? Those can easily get into the 10,000 V range and higher. That's the thing about static shock: you get a very... |
(actually 5): Depression | You know how it hurts when you fall, sometimes, and sometimes you cry? Sometimes you have a hurt inside you. It's not as easy to fix. |
Why do all supermarkets have the same layout? | That layout is the best for getting customers to buy a lot of stuff and to trigger impulse shopping It's a winning combination so they never change it and it's same everywhere", 'The exact layout is all about maximizing sales, milk is in the back same with eggs because it's the most commonly bought item, while you have... |
Islamic finance. What is it, how does it work, etc? | The other side of the spirit of the law is that money should be lent and borrowed with a purpose, meaning that financial transactions are linked with tangible investments. That takes away some of the mysticism of the financial services industry . Of course, the implementation isn't perfect, but greater application of t... |
Why do many biracial people such as black/white mix primarily identify as black when they are half black and half white? | Coloured", or whateverHistorically, there was "good" economic reason for that: One of the main reasons for owning slaves was to have sex with them, which meant that many of the next generation would be mixed race. Recognizing that mixture would a) make some awkward conversation around the dinner table and b) mean that ... |
How will the California transgender law work | Ever seen *Degrassi*? I mean I haven't, but there's a female-to-male character going to public school. He presents himself as a boy and identifies as a boy and uses the male bathrooms What this bill means is that he couldn't legally be barred from using the male bathrooms. His gender identity is male, so he would be al... |
Why is physical attraction so important when finding a partner? | Sexual selection, i.e. whether potential mates find each another attractive, is an important aspect of evolution. Loosely speaking, sexual attraction serves as a way to show off fitness. If you're beautiful, we're hard-wired to assume you have superior genes and your offspring will have a better time. Humans are somewh... |
If you're trying to burn fat, why do you need to eat? Can't you just not eat and your body would metabolize fat and not food you recently ate? | There are many negative effects of starving yourself. For example, your body needs proteins to function and without food it will break down your muscle to get them. Your body needs calcium to function and without calcium in your diet it will break down your bones to get it. Your immune system won't have the nutritional... |
Why are blackboxes not used in motor vehicles? | Black boxes are nearly ubiquitous in the North American market. People are just not aware that their vehicles have black boxes. _URL_0_ At the moment, they don't provide enough information to conclusively prove fault in all accidents though. |
How can arcade games possibly pay for themselves? | They don't go obsolete as quickly as you think. A lot of them get updated with kits. They spray paint it black, slap on some new stickers and a new circuit board and put them out again. If you see a game in a low traffic area there's a good chance that game was already in a high traffic area when it was new, and it's a... |
How do you establish a population/civilization with a few people and prevent inbreeding? | You can't with the amount of people being sent to Mars. Of course, they are not actually allowed to conceive children while there. For a population to be established without inbreeding problems, you need to hit something called the minimum viable population threshold. That is the minimum amount of animals you will need... |
Humans are incredibly uncomfortable when cold before hypothermia sets in. Do animals such as lobster feel such discomfort when stored in ice before consumption? | The definitive essay on lobsters and pain is, I believe, 'Consider the Lobster' by David Foster Wallace. I really recommend it for the joy of reading it. _URL_0_ |
How do mosquitoes know if one person has better blood than another? How do they even know where to find what they need in a blood source? | It isn't just having one blood type. Most people who have a negative blood type get bitten more often than people with positive blood types. I am A- and I look like I have chicken pox when I come back inside from being out for a couple of hours. |
How can you realistically tell whether you should stop or push yourself further during exercise? | I've been power-walking on a treadmill for the last 30 days after being massively out of shape. I'd see if I could raise the speed a bit, give it a few minutes and if I still felt OK, I'd speed it up a bit. If I started to feel like it was way too fast, I'd dial the speed back down a touch until I felt like I wasn't go... |
What are the technological advances that have caused diesel engines to become so efficient in recent years? Why can't these same principles be applied to gasoline engines? | Diesel fuel contains more energy than gasoline, so it is going to inherently provide more mileage per gallon. The issue wasn't one of efficiency, it was diesel engines had a power band that make them loud with excess vibration, plus they belched black smoke. All this was fine for a big truck, but not ideal for a passen... |
What would happen to the human body if I will stay in water? Forever? | For starters, unless it was temperature regulated, you'd most likely die of hypothermia. You wouldn't have to worry about the poo problem from the other comment so much if you were in an open body of water. If just a tank, however, then yes poo would definitely become an issue quickly. |
What is going on with the Syrian Civil War? Has it basically postponed? Are all factions tired of the fighting? Is there no major campaign or news because of Winter? | It's still going strong. But it became a bit more nuanced when it was no longer as simple as Bashar al-Assad's army against people revolting against him. Basically Iran and some folks the U.S. don't like or are a little icier in terms of international relations threw support to Syria who is now having to fight ISIL , p... |
How is brute forcing a password directly related to hashing? | First of all software should never allow you to brute force by attempting millions of logins. So that's not how brute forcing works. So how does it work? When a database is hacked, the hashes and usernames get sold on the internet, often for a lot of money. From the hashes, you can't reconstruct the real passwords. So ... |
What are the most common types of encryption, and which ones have likely been compromised by the NSA? | Thanks for all responses! So i guess it's most likely that they get a) into the endpoints and circumvent encryption altogether b) they exploit a weakness in certain cryptographic method or trusted point. From what I understand it's unlikely that they brute force their way in certain algorithms, unless they have a magic... |
Why do hangnails hurt so much? | I clicked this because I have a really annoying hangnail right now but it's not making it feel any better :How bout the hangnail bastards on your toe? Am I the only one? ---[AMA] I grow hangnails on my toes and yang them out without thinking. |
Why does money have value? | Sorry if this sounds a little flat, but your money has value because everyone around you will take it in exchange for something you want to have. Similarly, you accept money from people, so you make up the universe that gives their money value. Money has value because enough people agree that it does. It's a system of ... |
How this GIF, recently on the front page, is a visual representation of what the forth dimension looks like. | Imagine this; we live in a 3d world and we are able to perceive things in what we call the third dimension. for this, we are able to perceive depth in a 4d world, we would be able to see in front of and behind something all at once this concept is difficult to understand because our eyes don't work this way, and the on... |
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