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Before the age of discovery, how "Asian" are/were Native Americans? | Fairly Asian I suppose. Even today, when the skulls of Native Americans are examined by forensic experts, they are classified as "Asian". |
Why do people get tatoos? | Same reason people cut thier hair a certain way, wear certain clothes, say certain things, pierce thier body. They like the way it looks, it's the "cool" thing to do. |
What makes superballs so bouncy? | The [material they're made from] and being formed under high pressure gives them what's called a high coefficient of restitution. All that means is that it returns most of the energy used in squashing it when it's allowed to spring back. Little is wasted as heat. |
Do your arms get sore in space if you hold them up? | Short answer- no As previously mentioned there is no"up" in space. To us - to everything really - "up" is simply "against gravity". With no gravity, there is nothing to work against. This work against gravity is what tires your muscles. Astronauts have often commented that sleeping is much more comfortable because noth... |
Why are masking/duct tape used on windows during hurricane? | It's so if the glass breaks it stays together in large chunks instead of breaking into a thousand tiny pieces. |
Why do people type, when typing Arabic with the Latin alphabet, use numbers in the middle of words? | Arabic text on the internet is a bit smaller than English letters, and Arabs usually find it easier using Latin letters because of the keyboards some don't have arabic letters on them , but mainly because it is just faster because typing in Arabic can still be challenging since you mix up where the letters are on the k... |
Why can’t the Panama Canal just dig a deep canal and remove the locks? | Oceans are in constant motion. This means that they surge up and down. Because the Pacific and Atlantic Ocean aren't connected anywhere *but* the Panama Canal, you're channeling the entire difference in wave height at any given time through the canal. Without the locks, that means you'd mostly get a fast running channe... |
Does "Kids Songs" actually benefit kids over other music? | Generally it's about the kids recognizing the words and the subjects of the songs. Wheels on the bus? Kids understand it's a song about a bus and the things on the bus. Nothing overly complicated there. It teaches them association between these things and also teaches a sense of melody. But if you look at adult songs, ... |
Why was D-Day so successful? And were the Germans ill prepared? | It's worth reading/watching up on D-Day, and not just the landing scenes. The Allies put phenomenal effort into D-Day. Prior to the operation they built huge fake military bases prepping for an invasion and planted fake information for German spies. Just before the landings they started air presence towards the fake la... |
What is lint and where does it come from? | Your clothes are disintegrating, and that's where lint comes from. Cotton fabric is a big source of lint, and it makes sense, when you think about it. Cotton fibers come from soft, puffy flowers a couple of inches across; the very longest fibers are, well, a few inches long (they're a little bit curled up in the cotton... |
Why does a woman have to be awake while giving birth? | That used to be common, actually. From the 1930s on, women were routinely put in a sort of [twilight sleep] through a combination of drugs. Women were also routinely tied down during this because there was a risk of hallucinations and thrashing. The practise fell out of fashion because not only did it have negative eff... |
What is unique enough about eyes to make them work like fingerprints when using retinal scans? | Its just the pattern in your retina. It is, however, a common misconception that these are unique to you. It's pretty likely that there are other people with the same fingerprint or retina. So to answer your question, there is nothing about either that is inherently unique, but there are so maby possible variations tha... |
Why does water taste delicious and refreshing, but watered-down drinks taste disgusting? | You're used to the "taste" of water, and you expect what you get when you drink it.Likewise, you're used to the flavor and sweetness of sodas/juices/teas you get in stores. Your body likes sugar. If you dilute it, your body isn't used to the reduced sweetness and it won't taste as good. If you drink a diluted stuff for... |
Why do we spin our arms when we lose balance? | Its the brain's attempt to alter your body's center of gravity by changing its shape . I can get into some detail, but I'm sorry, this is as ELI5 friendly as I can come up with right now. |
Why is there little to no atheist representation in US congress? | Atheists won't vote for atheists just because they share a lack of belief, religious people will more often vote against atheists because the lack of said belief. Also, religious people congregate, atheists might leave extremely religious areas, but they won't specifically seek out atheist communities. and given that t... |
Why is it a sports team's responsibility to punish players for their actions off-field? | The NFL, as an organization, has chosen to hold its players to a certain standard, and the players association has agreed to this. They feel that incidents like this harm the leagues image, and wealthy players often aren't motivated by strictly legal consequences. That said, the punishments are often arbitrary, and are... |
when it comes to fresh asphalt and rain, why do some roads absorb the water better while other freshly paved roads leave all the water on the surface? | Most asphalt is impermeable: it doesn't absorb water at all. There are permeable paving materials, but either expensive or not strong enough for heavy or high-speed traffic. Impermeability also helps protect pavement from trees growing through it and keeps the road subbase dry. That's important because the subbase is t... |
Hoe does it actually feel to be deaf and what do you see when you are blind? | I'm not sure about deafness. Apparently, because they have never experienced the sense of sight, someone who was born blind has eyesight akin to looking out of your armpit. |
Why is a website url recognizable from any computer? | There are DNS servers which translate a address like _URL_0_ to the IP-address of the server. It goes a bit like this: your browser sends a request to your router to translate the address. If the router doesn't know it he asks a bigger server and so on. The IP-address is a unique identifier for every computer in the in... |
Why does vision in one eye get worse than the other? | If I punch you in the right eye, does the left eye get swollen and puffy? No. Both eyes are under different circumstances, and these affect them individually.It would be amazing if two bits of your body which aren't connected managed to stay the same. Almost none of your symmetrical bits are actually like one another w... |
How do weather systems work against wind direction? | The gulf stream does not carry weather patterns, although to a degree they are governed by the same forces. Weather patterns such as pockets of low pressure or high pressure are pushed to Europe by tropospheric winds ). These flow from west to east, but can meander significantly. The tropospheric winds are a result of ... |
PDD-NOS Pervasive developmental disorder not otherwise specified | I'm not exactly sure how to explain PDD-NOS, other than similar to autism, but there can be major differences. I've worked with children and adults with special needs for quite a while and I just want to offer some support by saying give your child your all. It will help him/her immensely. It's hard to stick by routine... |
If the certain kind of food tastes the same for different persons, why some people like it and some people don't? | How you experience something is not based only on how your body physically experiences it but also how your brain perceives those sensations. The way your brain interprets your physical experiences is not based only on the innate structure of the brain but also on the experiences it had based on things like upbringing,... |
Why can something be #14 on the front page, and also be #26 on page two? | I was told to consider the 'front page' it's own subreddit. So when you're viewing 'front page' youre actually viewing the most popular stuff on reddit + all your sub reddits that your subscribed to . So if you see two of the same posts that's because it's posted not only in the 'front page' subreddit but also the subr... |
Why do these emergency switches require you to break something first? | So you don't accidentally activate it and they know exactly which one was activated.So they are used only in emergency and no one sets it off just for the heck of it or by mistake |
What do we know about the effects of long exposure of the human body to high gravity? | Nothing. The highest gravity setting we have is 1G. We have studies on less than 1G. But we would have to go to jupiter or any planet with a higher gravity field to get long term studies. Being in a cockpit and pulling 4Gs isn't the same. It last just mere seconds. |
The difference between orthogonal and Perpendicular | in general the two are the same; but orthogonal refers to general objects or sets of objects at right angles with each other while perpendicular usually is used to mean vectors or lines. . In practice they mean the same thing, but it changes a bit depending on what you're talking about.Orthogonal can be used in a gener... |
What is the difference between a remote controlled helicopter and a drone? and why not call a drone a remote controlled helicopter? | Most 'drones' aren't actually drones. A remote controlled vehicle is exactly what is sounds like, it's a vehicle that is directly controlled by a person from a remote location . A drone has some level of autonomy and can control itself with minimal input from an operator. Basically, if you have a quadcopter that you ha... |
How come sport cars in general do not use the technology of a (cvt) continuous variable transmission? Wouldn't it make it more economical and have more torque when it's needed? | The main issue with CVT gearboxes is that they aren't capable of transmitting huge amounts of power. That's why they're very common on tiny little sub 10 horsepower scooters, but you don't see them on supercars. Development on them hasn't been particularly quick, but that's partly because they've never been that well r... |
How do CDFIs work? Specifically, how are they financed and how do they serve to invest money into blighted communities? | Oh, oh, I know this one, because I am working at a cdfi right now . As far as I can tell, most cdfi's are financed through a grant from the Treasury department. They then leverage that money to make loans / do other things. Their purpose is to serve as a lender to low income communities / projects banks won't touch. Th... |
Do horses really need to be put down if they break a leg? If they do, then why? | not any more, with modern tech. the pain can be abated and bones mended. Shooting an injured animal in the old days was mostly for mercy because ordinary people don't care to see an animal suffer. |
What is a "confirmed kill"? Is this a real military term or more a Hollywood myth? | It's real. The military keeps records of sniper kills, the range, the weapon used etc. Traditionally it wasn't publicly discussed and was sort of a "don't talk about fight club" rule among snipers, but Hollywood has popularized the termTo add to what others have said. A confirmed Kill is a kill that has been witnessed ... |
How can Steam have so many sales and still make money? | * Low costs due to virtual distribution rather than manufacturing physical copies* Usually only reduce older products they have already made profit onBecause Valve / Steam is acting more like a credit card company than a store. That is to say, they get a percentage of every sale, regardless of what the cost of the prod... |
Why is it so hard to come up with a cure for cancer? | because there isn't just one type of cancer . and cancer is essentially your body cells deciding they want to just multiply a lot more than usual. it's not like a bacteria or virus or something. it's difficult to have something that attacks the cancer cells without attacking all your other normal cells as well. |
Why does the letter 'a' look different, in default computer fonts, from the one we write? | [15th-century Italy saw the formation of the two main variants that are known today. These variants, the Italic and Roman forms, were derived from the Caroline Script version. The Italic form, also called script a, is used in most current handwriting and consists of a circle and vertical stroke. This slowly developed f... |
Undercover testimony in court, why not bugs? | Mick and Mairead Philpott were convicted of the murder of their kids partly by a conversation they had in a bugged police van. |
Why can one not see 3d with monocular vision (one eye) | We can, just not as well. When judging depth your brain uses several clues. One is simply knowledge of how big things are and comparing that to how big they appear. Big things far away look small. This works just fine with one eye. Another method is by watching what comes in front of what. Close things can obstruct thi... |
Why is Floria Man a thing? | Florida man is a thing because the [Sunshine Law] in Florida makes it easier for journalists to access the police reports that detail all of the hijinx that people in Florida get into. It's not necessarily that they have the craziest criminals, it is just that it is much easier to find out about them. |
Why are the veins in the back of my hands not identical? | Blood vessels don't follow an identical path. There is a general pattern, but aside from that, as long as the blood gets to or from where it needs to there is a lot of room to vary. The major vessels are pretty consistent, and arteries are generally more consistent than veins, but when you get to minor vessels, it beco... |
What makes the new Reddit privacy policy different from the existing? Anything in there to worry about? | The primary substantial difference is that IP addresses will be stored for 100 days, up from 90 days; according to Reddit, this is to allow for convenient quarterly analysis of usage. The other revisions are mostly rewording intended to make the policy easier to read, without affecting its substance.Don't worry about i... |
What chemical reaction happens when you mix milk with coca cola | I don't think its a matter of a reaction per se. Coke is acidic wheras milk contains protein . Casein precipitates in acidic environment and falls to the bottom of the bottle. This process is used as a method for preparing soured milk._URL_0_ |
How do physical disk readers identify music "tracks" on the disc? How do they know where to stop/start? | The same way your computer knows how to read files on your hard disk. Audio CDs have a specific format called CDDA for Compact Disk Digital Audio. The format specifies a Table of Contents section that indicates the location of each track on the disk. The CD player is just a small special purpose computer. It has been p... |
Why does iron rust faster in the presence of saltwater? | Rust is iron oxide, the result of oxygen interacting with iron in the presence of water. When this happens, the iron oxide forms a barrier to the rest of the iron behind it, so other factors, like wind erosion, need to remove the rust to get to the iron underneath, to then change that to rust. With salt water, there ar... |
Why is it that you can cough up a storm all day, yet not cough in your sleep? | The main reason for coughing is some sort of stimulus touches a receptor in your throat that says "hey there is something in here that shouldn't be, please get it out", at which point you cough to remove this foreign contaminate. During the "sick season" this is often times caused by nasal drippage. As for why you don'... |
why we can see colonies on agar, (for example, from your keys), but not on the keys themselves? | Because they are allowed grow on a plate . They are on your keys, but at very low levels because you can't eat a key. |
the state of being so drunk you'll not store memories of anthying that happens during it | Alcohol easily crosses the barrier protecting your brain and causes the release of a chemical called GABA. All of the messages being sent between cells in your brain are sent by using neurotransmitters that are either excitatory or inhibitory. One brain cell may get several excitatory and inhibitory messages at the sam... |
The six different cameras pointed at your car at a U.S. border crossing | Pictures of you, pictures of your car, scan your license plate, photo recognition of your passengers, ; there is an almost unlimited set of things that might be desired, and single function devices are cheaper and more maintainable than a does-everything scanner. |
What happened to the Scumbag Stacy meme? | Looks like she started sending out Cease & Desist notices and possibly also DMCA takedowns to sites using her image. |
How do soft drink companies fit so much sugar into a bottle without increasing viscosity? | You'd be surprised how soluble sugar is in water, simple syrup is equal volumes sugar/water for example. |
Entering the password twice while making an account | You can't *see* the password you're typing, so entering it twice means it's less likely you entered it wrong when you set up the account. Of course, if you enter it wrong in exactly the same way twice, and then try to enter it correctly later, you won't be able to log in.All the reasons below but also it also prevents ... |
Is it possible to write an algorithm that corrects a low-quality speaker to sound good? If so, why is it not done? | It's not quite that simple, yes you can fix a nonlinear response with an equalizer, but you also need to deal with distortion. With a cheap speaker you might put in one frequency, and get a whole bunch of weird frequencies out, due to the resonances of the different parts the speaker is made of. There's also the issue ... |
Why do they use a helium/oxygen mixture when scuba diving? Why not normal air? | [To avoid the bends]: nitrogen from 'normal air' gets into the bloodstream at high pressures, but then bubbles out when pressure drops; helium doesn't have that problem, and, being a noble gas it's not reactive with other elements, so Helium doesn't have any other major health issues from breathing it, it's not flammab... |
Why are so many youtube videos not available on mobile devices | The licenses for the mobile and browser version are different I thought. To solve it just request the browser version instead of the mobile version.The real question is why videos you can't play are even shown in the search results .nothing more frustrating then trying to find a video and you keep clicking on ones not ... |
If nothing can escape a black hole, how come there are two jets coming out of it? | The polar jets associated with an active black hole aren't actually coming out of the black hole itself - they're formed by the accretion disk of matter falling towards the black hole. Some of that matter is accelerated and energised by the gravity of the black hole and blasted away from the accretion disk before it re... |
How are humans able to recognize attractiveness or 'cuteness' in another species? | My guess is that attractiveness should correlate with fertility because that would help make the most babies. The traits we perceive as young are similar for other species too. Big eyes. Smoother skin. Good hair. Good health. In a good mood. Attractive dogs really have a lot in common with attractive humans. |
why sex offenders are required to "register" for the safety of their community, but not anyone else? | The core of the idea is that we adults can defend ourselves from other dangerous adults, but our kids can't defend themselves from this specific kind of predator that preys on kids. The laws kind of get more and more extreme because no politician wants to stand up and champion the side of sex offenders.* When people he... |
Why do bags form under our eyes when we don't get enough sleep? | It's because of gravity. When you're awake for a long time you're almost entirely in an upright position so gravity continuously pushes the retained fluids downward and it creates the bags. When you lay down facing up the fluid is then pushed into your body and travels to the air cavities where the body will do what it... |
Why is it often only possible to focus on one eye when trying to look someone in the eyes | Having two eyes never meant we were able to focus on two things simultaneously. Our sight converges on whatever it is we're focusing on, and the stereoscopy provides us with depth perception. |
How do peoples lives get ruined by a game like WoW? is this for real? | People get addicted to the game, to the point that it badly affects their priorities. Have a college class? Nope, got a big raid! Need to go to work? Nah, I'll call in sick and gain some levels! There are plenty of examples in the exact thread you linked to. |
How does hookah water filtering work? | It doesn't really do much. The purpose of the water is to cool the smoke before it's inhaled. Only the smoke at the surface of the bubbles contacts the water, so anything inside the bubbles can't be affected by the water. Technically a small amount of filtering is being done by the water, as evidenced by the fact that ... |
When a woman cries, why does it have a powerful effect on men? | Human instinct makes us alert when we hear a high-pitched sound such as a woman crying, kids screaming or cries of a dying animal. It's similar to the "fight or flight" instinct and takes advantage of our muscle memory. The ears let the brain know something dangerous is afoot. The shot of adenaline makes us more percep... |
Uber and why do cab drivers hate them | In many places, you have a to have a licence to become a cab owner or run a cab business. Usually the drivers are required to get a special education before you can apply, too. There tends to be other requirements too, like driving non-critical patients between hospitals for cheap. Uber avoids all that, doing basically... |
Studies say that the human body is completely replaced every eight years. If this is true, how do tattoos stick around? Wouldn't they disappear? | It's not entirely accurate to say that every cell in the body is replaced every 8 years. Some cells like heart cells and neurons seldom regenerate. Tattoos are injected into the layer below the epidermis, called the dermis, which is far more stable than the epidermis. I kinda just googled it ", 'When cells die, your bo... |
Why does coughing hurt my head? | Not an expert, but I'd guess it's due to rapidly over-tightening muscles in your head and neck. If it concerns you, ask your doctor. |
Why do some TV commercials last for a second or two before being cut off? | If you are watching a national network they are most likely broadcast from a local station . The local stations are allowed to put in local ads over the national ad running on the channel. If the national ad is 32 seconds and the local is only 30, or if the sync is off, you might catch the beginning or end of one of th... |
how does a zipper work? | The tips of the teeth of a zipper are larger than the shafts of the teeth, sort of like an **Ω** in shape. Once the Y in the center and ramps on the side of the zipper pull force the tips beyond each other, the teeth actually want to stay locked together. |
How come when laying in bed, or sitting in a chair, a really comfortable position will become uncomfortable over time? | Our body is wired to resist "static positions". Essentially, blood flow paths are "imperfect" and a static posture will allow for good flow in some paths and not great in others. We 've got a good adaptation to this called PAIN which will encourage us to move a little to get the blood flowing. This is preferable to the... |
Historically, what events have lead to such poor relations between the US and Iran? | Iran has historically been mistreated by Western countries . During the early 20th century, Britain and Russia fought for power and control of Iranian oil and land while the people began to call for nationalizing Iranian resources and having a democratic government. Soon enough, the US wanted in on Iranian resources an... |
How come a confession isn't considered a strong enough basis for a prosecution after a mistrial ? | The acquittal was valid. An acquittal doesn't mean 'You were found innocent', an acquittal means that you were found 'not guilty'. All that means is that the prosecution failed to prove that you were guilty beyond a reasonable doubt. As such, a subsequent confession doesn't override a previous criminal acquittal, and d... |
What's holding us back from truly photorealistic cgi? Lack of computing power or artistic skill? Both? | I think we have both the computing power and the artistic skill. Conquering the uncanny valley is going to require a perfect understanding of exactly how we perceive the movements in a human face. It's taking the time to encode all the subtlety properly that's making it a non-profitable venture at the moment. But we ar... |
Why is it ok to smash pennies, but not deface currency? | Burning a dollar bill is legal. It's not legal to deface currency with the intent of counterfeiting it or defrauding someone with it. Smashing a penny into a commemorative souvenir isn't either of those, so it's valid. Illegal would be tearing a $20 bill in half and trying to spend each half in two different stores as ... |
What's the purpose of vote obfuscation on Reddit? | Vote spammers will create dummy accounts to upvote or downvote whatever they want. When the system detects these fake accounts it doesn't delete them, it simply doesn't count their vote. To the account holder it looks like the vote worked, but on the backend it gets discarded. If the vote count was always 100% accurate... |
recurve bow vs compound bow | Recurve bows get the name from being curved the "wrong" way when unstrung, ie with the tip away from you when held as if you were going to shoot with it. That means that when you do string them, they have more tension in them than they would have had if they were straight. Other than that it works precisely as you migh... |
Why do prebuilt computers cost more then building one with the same specs. | Same reason a pre cooked meal costs more than cooking an identical one yourself. That, and often times manufacturers will offer warranty/support beyond or outside of the hardware manufacturers warranty. They also pay for advertising, warehousing, supply chains, etc on top of the ones paid for by the equipment manufactu... |
why is a man/boy required to lower the toilet seat? | Here's an easy compromise: everyone put the LID down when you're done, because it looks nicer. Now it's not about who wins, because everyone has the same rules, and it is not about gender, it is about aesthetics :-)", 'I too once felt this way. All up until around a year ago, my very sleepy self decided it was toilet t... |
What makes stuff that is sweet stick to things? | Because of sugar. Sugar makes everything sticky.Copied from an /r/AskScience post:Sugars are comprised of Carbon, Hydrogen, and Oxygen. The negative electrons on Oxygen balances itself out by attracting Hydrogen. Water breaks these bonds so the sugar molecules no longer bond just to each other. Hydrogen from the sugar ... |
How do photoshoots like the "ESPN body issue" not have a ton of leaks yet the movie industry leaks a movie seemingly once a year. | Perhaps you 've heard the saying, "Three may keep a Secret, if two of them are dead." - Benjamin Franklin In a photoshoot, only the photographer, and maybe a photo editor, occasionally someone in IT, will have the photos before they're sent to the magazine. Even then plenty of celebs have had photos leaked, or intentio... |
In this day in age with all the knowledge of how harmful it is, why would anyone choose to take up smoking? | Humans are really bad about long-term risk assessment. Sure, smoking increases the odds of dying of cancer. But that's in the future! Right now it makes you feel better! Plenty of people do things that make no sense in the long run, but make sense short term, because humans often struggle with long-term thinking and ru... |
How did my first generation get the last name? | It depends on your last name. Most often it either came from a job that your ancestor had, or another relationship that they had. Names like Smith, Carpenter, Hunter, etc. came from jobs. Names like Johnson literally meant "this guy is John's son."', "That depends on where you're from and what your last name is. [Wikip... |
Why do people brush their teeth BEFORE they have breakfast? | Because food acids can weaken the tooth enamel, it's better to wait half an hours after your meal to get your pH back to normal.Brushing your teeth is meant to clean the bacteria in your mouth that grew overnight, not to clean your mouth.I do it so I can taste my food, rather than devil's breath. |
How does a medicine for lowering your body temperature work ? | I assume you're referring to medications that help reduce fevers. They're called antipyretics, or at least they're medications with an antipyretic action. Our temperature is regulated by our hypothalamus. Antipyretics cause the hypothalamus to set the threshold for increasing our body temperature higher, effectively ca... |
In light of George Washington University dropping SAT and ACT admission requirements, what are the socioeconomic inequalities regarding standardized tests? How are minority groups adversely affected by the tests? | I can tell you from the perspective of someone who was raised in a well-off environment that plenty of my peers would have done very poorly on their SATs if they hadn't spent a butt ton of money paying for tutors. Most of them wouldn't had gotten close to their college of choice w/o such personalized attention, which t... |
When people faint, do they wake up refreshed like from a nap, or tired, or something else entirely? | Speaking from personal experience, fainting is kind of like accidentally falling asleep and then waking up confused, disoriented, unwell, and even more tired than you were before. Also, head injuries are far more likely especially if you faint while standing. What's interesting is that some people dream while they fain... |
A car A/C blows the air into a car through a fan in the front. How does the air go out from the car? | Car cabins are generally not airtight; there are dozens of holes throughout the cabin allowing the air to escape.Generally there will be hidden vents to let air out. Many cars will have them in the trunk. On my car, it's two rectangular openings with thin rubber flaps designed to let air out but not let air back in. Th... |
Why do big dogs act like lap dogs while lap dogs tend to be so territorial and violent? | Training. 100%. People with bigger dogs spend more time training, because if they don't their big dog will do big damage. Whereas small dog owners get away with less training because their small dogs are more annoying than destructive. That said, no dog should go untrained. |
Why do people have only pubic and head hair? | []We evolved. Early humans learned how to keep warm using animals pelts so hair for insulation became more of a burden as it provided a home for parasites. Thus there was now an evolutionary advantage to having less hair . Hair on the head still helped to insulate against heat loss , and pubic hair helps to reduce chaf... |
Why do you feel a shock from a live wire even if you're insulated? | Standing on concrete or wood is not considered insulated. Those materials are porous and capable of holding water, which can allow a path to ground. There are many types of rubber soles on shoes, a lot of them have an open cell structure that could allow water to be retained creating a path to ground. Special electrica... |
What's the deal with movie theater shootings? | Like any mass shooting, they get tons of Media attention, inspiring the next round of mentally unwell individuals to become copycats. Combine that with virtually non existent security in movie theaters, and you've got an easy target full of people. |
Why are computer keyboards designed qwerty instead of abcdef? | If you think of a writing machine, they had little sticks attached to the letters. You press a key, stick raises and hits the paper, comes back. Now, you need to distribute the letters in such a way that the most common letters are not side by side, or this can cause a trouble with the little sticks hitting each other ... |
Why the US majority vote in presidential elections matters if we have the electoral college. | There is no point to the presidential popular vote but knowledge. It has no constitutional powerThe overall vote is meaningless, it only matters how each state votes. The electoral college is designed to represent states. Because of really heavy leanings in most states only about 9 states even matter, so called swing s... |
Why when TV shows use computers do they use fake operating systems? | Two reasons: 1. Product placement. Companies pay good money for movies and TV shows to show their products, so the shows\' producers wouldn't want to "give it away for free". They would also wish to avoid any possible legal and business complications if by any chance the company doesn't like its products appearing on a... |
Why does nobody play man to man defense in soccer? | It's also not practical to cover all the space on the pitch. As a basic rule of thumb your team is compact on defense and expanded when you have the ball. Being compact in the space between you and your teammates allows the formation to hold more firm which provides cover to the immediate player pressuring the ball and... |
Everyone seems to like Harry Potter, can someone explain to me what's good about it without giving spoilers? | > is Harry Potter good? Or is it like the Twilight of fantasy? This attitude annoys me. It trivialises quality to the extremes of 'good' and 'incredibly bad', along the single axis of 'is it like Twilight?'. Harry Potter is a great story about an interesting world wrapped up in our own, where ordinary people may really... |
Do courts check if photographic/video evidence is real? If so how? | There are various tests one can do that can help to determine if a photo has been manipulated, usually based on how much random noise or fuzz is present in the image. The idea is that an altered image will be cleaner than it should be in the area where it has been altered, though there is debate over whether or not thi... |
Did they ever (actually) open the safe? | Not as of yet. The original poster of the thread is actually a friend of the person who lives in the place that houses the safe. The last news reported was that they were going to try and crack the safe themselves, rather than hiring a professional. The rationale behind this was that, because of the house's history wit... |
why do electrical circuits make noise occasionally? | Buncha weird answers here. Switch mode power supplies use a transistor to switch the current on and off through a coil of wire, generating different voltages which can be more useful for low voltage DC circuits. As this coil of wire is repeatedly energised and de-energised at a high frequency, causing a changing magnet... |
Why is having a high bypass ratio on a jet engine more efficient? | The core of the engine has very high speed exhaust, it takes a relatively small quantity of air and speeds it up to high speed. This is a large change in momentum for a large amount of energy The bypass fan takes a large amount of air and speeds it up just a bit. This gives a large change in momentum but doesn't waste ... |
What criteria do dogs use to do their business? | A lot of it is where other dogs go. You'll notice that they love to go on stop signs and light poles at intersections. That's because it's a kind of crossroads where all the passing dogs will be able to stop and sniff each other's scent. Then they leave their own for others to smell. I always watch my dog as she does t... |
Why Margaret Thatcher privatised national industries and why it was so bad. | In the decades following the Second World War there was a general consensus amongst all the political parties in Britain to follow an economic system that involved State control of many key industries. So for example by the mid-1970s just about all the railways, coal mines, shipyards, the telephone companies, the oil c... |
why is a horse "without a leg, not a horse at all" if the leg would be required to have amputation, but animals like elephants are ok with prosthetics? | Because some people put value on a a horse based on that horse's ability to make them money , which gets harder once they're so significantly injured and using a prosthetic. I don't know if they even make prosthetics for horses, and if not, WHY not, but I know many horses who have been injured to the point of being una... |
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