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Why are many trains not designed very aerodynamically? | To add what has been said, trains in the underground ventilate the station and tunnels by pushing air. This is called the [piston effect]. If the trains wouldn't do it, some other ventilation system would be needed, so it probably wouldn't save much money. |
why do Indian IT firms like Infosys, wipro and TCS get a bad reputation in USA, when american firms like IBM indulge in similar, if not worse practices? | I am a mainframe engineer for IBM, and though I agree IBM's practices are horrible, they are no where near as bad as India. I have to work with Indian firms on a daily basis and the obvious lack of knowledge from the employees is mind blowing. They hire these people to manage their entire IT infrastructure and they hav... |
Why can't we, as a country, decide to have Obama for another 4 years? | Obama can't appoint a new judge to the supreme court due to congress blocking him, it would be near impossible for him to get the law changed to allow him an extra term.We, as a country, would also have to agree we want him as a president again. His average approval rating to date for his latest term was 48%. |
Why does Easter change dates every year? | Easter doesn't change dates, it just uses a calendar that's different than the one we use for most other things. It's a lunisolar calendar, and at the time it was the most popular type of calendar, as the Hebrew, Hellenic, and Babylonian all work that way. In 325 the Christian church set a specific lunisolar date, to d... |
why do defendents on TV court shows defend their case so vigorously if they don't pay settlements out of pocket? | One, it's an act. Two, they get the appearance money if they don't have to pay it in court.Everyone has their own personal sense of justice and outrage. Have you ever heard siblings or lovers bickering, even though there is nothing at stake other than pride? Also, the appearance money is first used to pay the judgment,... |
Why aren't all North and South Americans referred to as Americans the way Europeans are all European? | Western Hemisphere" or "New World" to refer to them together. Eurasia is used to refer to the continental landmass of both Europe and Asia. Afro-Eurasia is also used. |
Why does tubberware never dry properly in the dishwasher? | Plastic dumps it's heat way faster than glass and ceramic because it's far less dense, thus the water doesn't dry off. and this topic comes up a lot in ELI5. |
What would happen to a Nuclear Power Plant if everyone just got up and walked away and never came back? | it should just shutdown. the reactor needs constant input from the control room to stay active. otherwise the control rods would automatically lower and prevent the nuclear reaction from becoming hot. if the rods mechanically failed to lower, then you'd have a meltdown |
Why does it take so much longer to use a phone/laptop's charge than it does to actually charge it? | You can push charge into a battery at as high a rate as you like *but* the faster you do it, the more you shorten it's life. For older NiCd cells, the rule of thumb was to use a current of 1/16th of the amp-hour figure for gentle charging, ie charge fully in 16hr. However consumers are more attracted by promises of fas... |
How does Netflix afford to pay Dave Chappelle 20 million a special? | I mean, shit they basically print money. Everyone who has a netflix account is paying $8-$15 *a month*. ~~From an estimated 30 million subscribers that's $240,000,000 a month .~~ Whoops 2012 data is bad, the 2016 data is **93 million**. That is 93,000,000 people paying $8 a month for a total of $744,000,000 **a month**... |
Why do companies ask for billing address on credit cards? I don't want invoices or anything in the mail | It's to help prevent identity theft. If your card gets stolen, the thief has your name, your account number, the expiration date, and the security code. The one thing they don't have is the billing address. Thus, when they run your card, many companies will ask the credit card company if the address they have matches t... |
Why is it so hard to stay hydrated? | I think this varies by what you've conditioned your body to. I drink around 5 liters of water a day and find being thirsty as, if not more, distracting than being hungry. When I was younger though, I would probably drink less than a third of that a day and it didn't bother me. I think our bodies are very adaptable but ... |
Why are some metals magnetic and others are not? | A lot of metals on the periodic table are transition metals. This means that their number of outer shell electrons can vary, allowing them to choose their orientation accordingly. Other metals however are more stable, which makes it difficult for them to switch orientation without artificial input. I know that doesn't ... |
How do you protect from a ddos attack? | There are a few people in this thread who talk about VPNs and other ways of stopping people from knowing the IP address of your server. Let me use a metaphor to ELI5 why this is no way to combat a DDoS attack. A DDoS attack is like mass prank calling a company with a front desk. The phone would keep ringing and the fro... |
the difference between 32 and 64 bit. | So far everyone has missed the expanded instruction sets. It's well and good to able to address more memory, but you have to be able to do something cool with it. There are extra tools available to 64 bit processors that aren't available to 32bit processors. These allow you to do things in one operation that used to ta... |
Why famous people seem to date and marry other famous people. | If you are worried that someone only cares for you because they want to be famous, a great way around that is to be with someone who's *already* famous and doesn't need your fame. But also, people in similar jobs tend to meet each other at events and through mutual friends. |
What factors contribute to cultures advancing at different rates? | If we are talking about culture in the sense of human civilizations, I highly recommend that you check out *Guns, Germs and Steel* by Jared Diamond. By and large the most important factor contributing to differing rates of advancement is geography. For example, although agrarian societies arose in both Eurasia and the ... |
- when people cut people open in surgey, why dont they bleed everywhere? | I sell tools to the doctors, and I can tell you that it's not only the way the doctor cuts on someone, it's also because of the tools he uses! I sell one knife that uses electricity to lightly burn the place where the doctor is cutting as he does it! That way it cuts and seals the person at the same time, which keeps t... |
Why did Western countries set up foreign missions to modernize other countries military? | Most military tech being exported isn't all that secret or impressive . We can be sure that if we sell X to somewhereistan, we have a countermeasure for that tech should it be used against us. We seem to think American gear is the best and is our primary advantage against our enemies, but it's not. Leadership, command ... |
what do hard drugs do that cause a permanent change to a person's looks. | The drugs themselves often do not have an effect on your physicality. Its the lifestyle that most people have to turn to to obtain said drugs. This leads to poor nutrition and hygiene, crime, incredible stress levels and such. The folk who also tend to be users are not rich, thus the drugs they can afford are not pure.... |
TIL that Earth’s ancient magnetic field originated from several poles rather than the familiar two. What would be the impact to our daily lives/infrastructure/electronics if this happened again today? | Are you sure that it had more than two poles at any one time? That doesn't sound right. It's well known that the earth's magnetic field [occasionally reverses] but still only has one north and one south, except during the turbulent period of reversal. |
Why is it illegal in some states to wear headphones/ear buds while driving, but deaf people can drive legally? | As a deaf person, I'd like to thank you for giving me way more credit than I probably deserve. |
When sending a letter abroad, how does the receiving country's mail service get paid for their work? | how the hell can i order a product from china for $3 and have it shipped free halfway across the world? but if i'm in america i can't ship anything to anyone else IN america for less than $3.Except countries like China completely abuse the system by sending out en-mass small packages and charging the senders almost not... |
Why some foods completely unrelated to animals contain fat (olives, nuts, avocado), please. | Ok, fats are a wide group of compounds that are generally insoluble in water , and are well defined as Triglycerides. A triglyceride is just the name given to a molecule thats made up of a glycerol molecule, and three Fatty Acid molecules; and a fatty acid molecule is a fairly simple hydrocarbon molecule made up of a c... |
How Do Cell Phone Towers Connect to the Network? | Generally cell towers connect to the network via direct wire, but sometimes they will relay their calls through a direct line-of-sight microwave antenna when a ground connection is unavailable or unreliable. While towers may be in remote locations they at least need to have a power supply so they can't be *that* remote... |
How the hell do the companies making all those free (and generally shitty) apps afford prime time television commercial slots? | In Germany you will see **many** different mobile **games** advertised, but in the end it's all from **one** **publisher**. My guess is that it's the same in the US. 20+ games advertised, ONE firm behind them all. |
The real differences between MacOS and Windows | OSX is a Unix-based language. Windows has its own proprietary kernal . They are just two different 'languages' trying to do similar things, but in different ways. I assume Macs are preferred in 'arty' crowds for 2 reasons: 1. Apple *specifically* marketed themselves to this demographic, so that's what you'd expect to h... |
Why has the weather been so Hot in North America? | I take it you're not from Southern California? It is FREEZING here. Sometimes it gets down to 55 degrees Freedom at night! Seriously though: On average global temps for 2015 appear to be the highest they've ever been, but really it's local influences that determine how unusual of a winter you may be having wherever you... |
Why am I way hornier the more hungover I am? | Man, I must be weird, then, because when I'm hungover, having sex is pretty low on my list of priorities. |
Why have humans not returned to the moon since 1972? | The same reason you wouldn't pay $80 for a taco - because it would cost more to go there than could possibly justify the minimal benefit that would result from it. |
Why aren't women required to register for Selective Service in the US? | It's a holdover from back when women weren't legally equal to men, and generally couldn't do things like join the military. Today, it's mostly a moot point because there is no draft. The Selective Service is mostly a formality, so there's not much of a push to change it. If we were ever somehow in a situation where the... |
why do we get grumpier the more tired we are? | I really only get grumpy when people try to impede my sleep. Whether that's waking me up, or doing something that delays me getting into bed. |
Can someone explain to me like im 5 why we have to pay income tax and where that money goes in america? | Simply put, if you didn't pay taxes then the government would not have enough money to keep the country running. The government needs lots of money to pay for things the public needs and that money has to come from somewhere.If you want to see where the money goes, this is probably the best visual: _URL_2_16th Amendmen... |
Why does night come gradually and not right at that moment the sun disappears? | I'll leave the technical responses to those more knowledgeable, but I will mention it has something to do with the fact that a certain well-known rapper is incorrect about his assertions that the earth is flat :) |
Why are chips and salsa a million times better in a restaurant? | The chips are warm and the salsa is likely made there at the restaurant. If you did this at home, you'd probably like it more. |
Do your grades in highschool really affect you in the real world? | Professor here. It's all a matter of context. High school grades really do not matter in life, generally speaking. If you want to get into a specific college a select few may consider it for freshmen with no other college experience. However, if you're not just starting college and have some 2 year college credit at a ... |
What is going on with the GOP apparently trying to block the Pope from speaking to congress? | They are? I haven't seen that the Republicans have taken any such action. There is at least one individual Republican boycotting the speech is that what you're talking about? He wrote a whole article on his reasons.They are worried he might remind them and the Americans in general what the Christian values actually are... |
How the first human beings were able to translate from one language to another. | In addition to other's answers: In the worst case, you could raise children among speakers of both languages, and then use the bilingual children to translate stuff. |
Do low gas prices (such as ~$1.50 like today) have any negative connotations in regards to the global economy? | you'd think with companies saving millions trucking their products around the country that the consumer would see either cheap cost of goods or wage increases.Look at the state of Alaska, a place where the economy is almost completely dependent on the oil industry. With prices plummeting, the state is facing serious pr... |
How does "glow-in-the-dark" stuff work? | Depends what kind of glow in the dark you mean. Some compounds glow when exposed to ultraviolet light invisible to humans, that's usually what glowing paint at clubs does. Others when exposed to radiation - that's the stuff inside old tube TV or in glowing paint on military compasses/sights Others glow when reacting wi... |
Why can't human eyes slowly pan from side to side? | Eyes are capable of panning from side to side. A quick jump of the eyes from point to point, such as when reading or looking around a room is called a saccade. This develops first in a human. As we further develop we are capable of tracking an object within a specific rate of movement smoothly. This is the panning that... |
How can McDonalds sell hot and spicy chicken sandwich for only about $1.19 and still make a profit on it? | They don't make a lot, a couple percent but they are a volume business. They sell 75 sandwiches a second, or 6.5 million per day, every day of the year. |
If a 75 gallon fish tank can hold 626 pounds of water, will a 3 pound fish affect the overall weight even though it's floating in the water? | Yws it will increase it by 3 pounds. Think of it instead of adding a fish to a tank of water what if we just placed it on a table. Despite the fact that there is a force holding the fish up. The weight of the table will still increase. The same holds true for the fish tank. This is what you'd expect from Newton's third... |
Why does the 2nd train face backwards? | There may be some confusion of term here. > I always see two trains pulling lots of cargo Do you mean two trains, or two locomotives? If you mean two locomotives, it doesn't make any difference which way a diesel-electric locomotive faces. They can drive their wheels in either direction with equal efficacy, as easily a... |
Why do mobile phones get worse over time? | All components are susceptible to wear, and computer components are no exception. A smartphone that'll face a lot more diverse and extreme conditions than your average desktop, and may be sporting cheap hardware to lower initial price at the cost of longevity, will fail faster. |
Why do so many games now not have local LAN? Is it hard to implement? | If people will buy the game without it then then they won't put it in. It seems nowdays it's all about doing the least amount necessary, market it like crazy, get hype and purchases, then after that they're home free with your money. |
How will self-driving cars be able to determine the amount of friction there is on the surface of roads? | The cool thing about intelligent vehicle is that they will use each other as information nodes along a freeway. So if a car half mile ahead detects a patch of black ice, it will relay that information backwards down the freeway to prepare upcoming drivers. How the cars will deal with the actual ice is probably dependen... |
Why did humans in ancient Europe/Asia form modern civilizations faster than the ones in the Americas? | They didn't. Human development is a hugely complex thing, and while you can say that in some areas Europeans had the upper hand, in other ways the peoples of the Americas were more advanced. When it comes down to it, they were really just vastly different forms of civilization who developed along differing trajectories... |
How did scientists first hypothesise that an meteor killed the dinosaurs? | The fossil record tells the story. Rock layers deposited before the iridium layer contained fossils from many large dinosaurs. But the layers of rock above contained none. His conclusion was to associate the dinosaur extinction event to the iridium. The theory wasn't popular until a crater from an asteroid impact was f... |
how long are skyscrapers built to last? If they are too old and needs to be put down, how will they be demolished? | There are a few approaches to dismantling buildings. It depends on the building, cost, and companies involved. Basically, you can work bottom up, top down, or use explosives. Each has its merits. If you 'start at the top, basically you put a crane on top, and do the reverse of building it, take off pieces and carry the... |
Why is it that video games have loading screens after deaths? | Game State is actually a really finicky thing, when the player dies and resets, everything that should reset, needs to actually reset, this means enemies, destroyed terrain, power ups, score, time and a dozen other things. The one thing a game dev must avoid at all cost, is a soft-lock. A soft-lock is when the game sti... |
Why do we get impulses to do bad things? | We can't control the thoughts that pop into our head. All we can do is contro our reaction to them. |
how would human body react to hot water slowly rising in temperature? | The story about frogs is an old wives' tale as far as I know. I don't think a human would survive significantly longer if the change was gradual. The heat would feel lower at first since we primarily detect changes in temperature rather than absolute temperature, but fact still is that our bodies need to be around body... |
When a new coin is introduced how do shops re-calibrate their machines to recognise them? | Work in large UK supermarket in the convenience sector of the business in middle management - we count our change/notes using a generic 'cashmaster' set of electronic scales. When the new plastic 5er came out this year we received a memory card to put into the cashmaster and it uploaded the necessary weight information... |
What is Computer Vision, and how does it work? | If you think about a face there are some things that are broadly similar to each other. We generally have two eyes, a nose, and a mouth. Faces are generally kind of oblong, and all of those bits are in a similar ratio distance to each other. That is, the distance between your eyes is approximately proportionate to the ... |
Why the Democratic party demanding Romney's tax documents is different than the Republican demanding Obama's birth certificate. | Romney is running on the idea that he is a successful business man and therefore is qualified to run the country. This being said, his tax returns should be evidence supporting this idea, but him not releasing them seems to point in the other direction. His tax returns are relevant to his platform. Asking Obama for his... |
Why do computers need cooling for their processors and tablets and smartphones don't? | They have cooling, just fanless cooling. You can run a computer with a passive heatsink for cooling too if you want to, it's just not as effective. |
How do trees create oxygen when they've lost all their leaves in winter? | Little known fact. Most of the planet's oxygen doesn't come from plants. It's actually produced out in the ocean by phytoplankton", 'So is this where all the Maple syrup comes from? Maple trees being bled for their antifreeze in the springtime? Frosty nights and warm sunny days bring down the most sap anyway. |
How is it possible for my exact speed to be accurately determined from a vehicle moving in the opposite direction? | It works the same as if the cop car was sitting still or moving in the same direction as you. The math the allows the speed guns to work can handle all these scenarios as long as it can determine the relative speed and direction of the cop car. Remember radar uses electromagnetic waves which travel at the speed of ligh... |
Explain like I'm 5. Why won't the US government say that the Ft. Hood shootings were an act of terrorism? | It is entirely possible it is for legal reasons. Because the shooter was a member of the military, he is subject to the jurisdiction of the Uniform Code of Military Justice and is being tried under that, with a court martial, rather than typical civilian law and courts. The UCMJ has very specified definitions of crimes... |
Why do we need to test our smoke detectors, and how exactly does the test button work? | When you press the button, you're checking to make sure that the bits of hardware that make the alarm noise are still functional and that the batteries have a decent charge. **Not** the smoke detector's ability to actually detect smoke. A lot of people don't do this step as part of their safety check, but you're actual... |
The athletic part of being a car racer | > anyone unathletic can drive Anyone unathletic can drive a street car to work and back, it takes a serious amount of muscle to work with the g forces for 2 hours solid with no stops. It's very intensive on the body |
Why is there ice in some urinals? | it is to stop the strong odor from urine sticking around. whether or not it works, i'm not sure. |
What is an API? And what is it commonly being used everywhere. | An Application Programming Interface is a way for one person's code to talk to another person's code. It's commonly used to refer to websites that provide a machine-readable way to access their information. For example, _URL_0_ is a part of Reddit's API- it allows me to get a machine readable version of your question a... |
What caused the recent decline of Detroit? | For what it's worth, the city has had a massive population reduction and is just now getting settled into it's new size as it were. Much of the city has actually experienced a bit of rebirth. It can be quite pleasant in areas, but there are whole neighborhoods that are wasting away as the homes have become abandoned an... |
The Paradox of Two Charged Capacitors | It's sometimes helpful to think of circuits as water pipes rather than electrical wires - identical equations apply, and it helps with intuitive thinking. In this case, the situation would be a full water tank of height h connected to an empty water tank. The potential energy in the full tank is m *g *, or 1/2 *ρ *g *A... |
What will happen to local PDs when autonomous vehicles reduce income though speeding tickets? | They'll likely have fewer officers tasked with dealing with traffic and vehicle related stuff. That could mean shrinking the police department or an increased headcount of officers in other areas. In either case, the organization will be funded so perhaps taxes will be raised or an alternative revenue stream used. |
What's the difference between Coke Light, Coke Zero and Diet Coke? | Not an answer to the question , but am I the only one who thinks Coke Zero tastes like I'm drinking random chemicals? Coca Cola claims it tastes the same, I hope they're willing to bet on that since IMO Coke Zero doesn't even remotely taste like cola anymore. Let alone like Coca Cola.Diet Coke was created with its own ... |
Why do so many people think prostitution is bad? | Originally, prostitution led to illegitimate children. These children grew up poor and fatherless and were likely to become criminals. Making laws to prevent prostitution was a way to decrease the crime rate. Society has advanced a lot since then. Our views on morality haven't. |
why do cell phones need to be put into airplane mode on airplanes and is it completely necessary? | There is no danger. Nothing about cell phones interferes with radio equipment on airplanes, but it is a throwback law that airlines have to appeal to the FAA to overturn so that is why on some of the bigger airlines you can use electronics but on the short connecting flights you can't since they haven't completed their... |
How are "Prostitution" and/or "Bicycle Theft" stings from law enforcement not entrapment? | Entrapment has a very specific legal definition. For it to be entrapment, the officer needs to convince you to commit a crime you would not otherwise commit yourself. If they just leave a shiny new bicycle out there without a lock on it, that is not entrapment. They are not telling you to do something. You are making t... |
what are moles and why do we have them? | If you're referring to skin moles, a mole is also known as a melanocytic nevus, which is a less confusing term. Anyway, ELI5: Moles are kind of like tiny cancers. But they're not as scary as cancer because they're harmless. People can have moles either because they're born that way or because they grow moles because th... |
Where do prototype cars go after the filming of a commercial? | The do experiments on them. Sometimes, they issue them to employees to run up the mileage so that experiments can see how they wear out. They don't get sold to customers. |
How do dogs interpret human language? | This brings me to another question, what do baby's think in if they don't know a language? |
Why humans are attracted to butts and why we find them sexually desirable? | Not sure, it seems rather primal. But, do you know the reason why men are attracted to cleavage? It's because it reminds us of a woman's buttocks. Because I suppose, presumably when we were cavemen we used to do girls from behind, so we like the And then we evolved and probably turned girls over when language came in t... |
Why do videos uploaded to YouTube seem to lose their video quality over time? | My guess is that you are now used to the better quality available today and are misremembering the quality of the old videos. I sometimes see this when I go back to an old game. They felt amazing at the time but look terrible compared to today's games. |
What makes Reddit features take so long to develop? | > This is referencing the quotes that say new mod-mail could in no way be done in 2015. Well, mod-mail is currently backed by the same messaging system as private messages. It's my understanding that it's a sort of cobbled-together Frankenstein of a tool right now. So they have to develop a completely new messaging sys... |
- Why does a mirror only reflect backwards but not also upside down? | A normal flat mirror actually reflects front-to-back. Reflecting something front-to-back is the same as first rotating it around 180 degrees, and then rotating it side to side. Most people tend to mentally gloss over the implicit step of rotating 180 degrees when they say that a mirror reverses sides, or switches side ... |
What are the advantages of 70mm film over digital? | Regular 35mm film has a digital equivalnce of ~4K, 4096x2160. 70mm is just 2x as wide a 35mm, so about 8192x2160. 70mm IMAX is 2x as wide and 2x as tall, so about 8192x4320. This of course doesn't deal with the aspect ratios, The Hateful Eight is 2.76:1 , so about 5961x2160. |
How did futurama win 6 emmys but got canceled twice? | Television shows stay on the air because they are successful, not because they are good. Futurama got canceled. Two and a Half Men was still the #1 show with Ashton fucking Kutcher. A great example would be the old Sci-Fi channel's show Farscape. Excellent show. One of the best science fiction shows ever made. But it w... |
Why does the Korean War get much less attention in history and modern culture than other wars? | It is wedged between the Good War and the Bad War. There's no good place for it in our narrative. |
When I have an overwhelmingly familiar dream, have I actually dreamed it before, or does it simply feel "familiar" because my brain knows what's going to happen next? | Not an answer, but I've had dreams that felt familiar and ended up happening in the future. I wouldn't realize it until it actually happens that it occurs to me that it had happened in my dream a couple days ago. It's kind of like a deja vu feeling, but actually being certain about the familiarity. |
Why does a good pair of headphones/earphones make it feel like the sound is coming from inside the middle of your head? | A good pair of headphones *doesn't* make it feel like the sound is coming from the middle of your head. A good pair of headphones makes it feel like the sound originates from well outside of your head, with a good soundstage. |
Why is vinyl considered the gold standard for music quality? | It isn't, CDs are better sound quality than Vinyl. I think people want that not to be true for nostalgia and the experience, but digital sound is higher quality. |
Why is PETA considered evil? | they kill a lot of pets that didn't need any killing, some of which are just lost and dead before their families can find it back. |
How did embassies secure telecommunications before satellites and prevent their phones from being tapped by their host countries? | You just use [encryption on your diplomatic cable], a one time pad is unbreakable if done right. Otherwise, international treaties say diplomats can carry a [diplomatic bag], they can put anything they want in their bag and it's totally exempt for any form of search. So before electronics/radio/etc they would write a l... |
Why does Netflix streams HD videos so much better than other video streaming websites? | The simplest answer Netflix does not send a copy of Stranger Things to you from it's HQ in California. Instead, Netflix stores a copy of it on a computer *in every city* So they only have to send the video ten miles, instead of a few thousand miles from California. Not only does a short trip take less time, there aren'... |
How do sugar substitutes, like saccharine, taste sweet but have no calories like a true carbohydrate? | Artificial sweeteners can't be digested to produce energy. But they get detected by sweet sensors on your tongue just as well. |
Why are there so many WWII and Hitler documentaries on history channels and Netflix when there were so many other grand world atrocities in history that are overlooked or under reported on? | The west is the prime market for documentaries. The west is also the biggest producer of documentaries. The west is most interested in the most recent world war. Therefore, we get a metric fuckton of WW2 documentaries. It also really helps that WW2 had so much stuff going on that you can make documentaries about. There... |
How can a disease cost amount $X to the US government a year if healthcare is provided by private companies? | Well as you've pointed out, there's no direct link so it depends on the source of the figure but things like lost tax revenue from people who aren't working due to illness will contribute. Also, while the government may not directly pay hospital fees it still spends money combatting disease through organisations like t... |
Why does a weak am/fm radio signal result in a consistent static/fuzzy sound while a weak satellite radio signal results in intermittent high quality sound? | Broadcast radio is analog. That means if you get a partial signal, you can get a partial. Satellite radio is digital, which means all or nothing. It is kind of like talking in a noisy room. If we are just having a conversation and you miss a word or two, you can probably guess from the context what I am saying. Bit if ... |
Do hallucinogens like LSD have any effect on people who are blind since birth? | It kind of depends on why they're blind and when they became blind. If you acquire blindness as a result of injury or ocular degeneration, your brain still knows how to interpret images, and those people still dream and would presumably experience visual hallucinations on LSD. If you're blind from birth then you'd expe... |
Why can't software developers, like Microsoft, just put a straight end to malware? | assuming that a system was 100% secure, there remains user error which is how most of malware gets through. malware includes, ransomware, spyware, adware, scareware, etc. the only way MS can prevent this stuff is if they blocked execution of programs. but they don't know which is malware and which isn't. even making a ... |
What is the purpose of the FBI's most wanted list? | I think there should be an FBI LEAST Wanted List. Then we'd know who the sanest, most reliable people are, and then go to them for crowdfunding", 'because everyone on the 10 most wanted carries at least a $100,000 reward . this encourages people to dime them out. |
How does Samsung and Apple release updates that "increase system peformance" if they cannot physically take each phone and change the Processors, Ram etc..? | They tweak the operating system to optimise it's performance on their hardware. Note that by and large these increase some things at the expense of others. An example would be; changing the amount of RAM usable by toggled apps. This is good because you have more RAM available for the active app, however it means you ca... |
How do two different colors combine to make a completely different color? How does our mind process this (instead of just seeing a mix of blue and yellow we see green)? | Light has a smooth range of colors, but your eyes only have 3 kinds of color sensors. Each sensor just tells your brain how strongly it is absorbing the light. Each of the three sensors absorbs certain colors of light very strongly and others very weakly. [Here's an illustration.] Your brain compares the relative stren... |
What does the process of quitting smoking do to your body? | Be prepared for fatigue, headaches, body aches, shaking, cold sweats, pain, increased appetite and weight gain. Different people experience the symptoms at varying degrees. When I quit cold turkey, it was absolute hell but I used that as a reminder of how much control nicotine had over me. I just passed one year and fe... |
How come reptition doesn't always make one better? | Repetition improves consistency. We're not perfect and we are prone to make mistakes even though we have done it flawlessly countless of times before. Someone who practices only once a week is much more susceptible to make mistakes than someone practicing every day. There's also tons of other factors such as health, co... |
American here - what does 'o levels' and 'a levels' mean? | O Levels are an old version of what is now called GCSEs - you take these when you are ~16. Almost everyone does these. You usually need good GCSE grades to get a decent first 'real' job after school. A Levels are the higher level qualification- you take these when you are ~18. Not everyone does these. You usually need ... |
Why do clothes shrink in the wash? | It only happens with cotton. Happens because when cotton is spun, it's stretched out. Hot water makes it relax into something closer to its original form. |
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