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Why do most sleep paralysis stories involve the "victim" seeing some kind of demon-like creature? What makes the brain see these figures? | Not positive about this, but I read that it's your body's way of protecting itself. Your brain recognizes that you're exceptionally vulnerable so it creates something terrifying to jumpstart your body. The shot of adrenaline is supposed to make the paralysis wear off quickly. If it's true, it's very cool |
How do organs know at which part of the body they should develop (left or right)? Are there people with 'flipped' organ arrangements? | I'm sure it's been mentioned before, but yes organs can be mirrored. I actually had a great uncle that died a few years back that donated his body to science because he lived to almost 90 with a flipped heart. |
When a part of the body aches, we as a reflex immediately apply physical pressure using hands. Why? | It may be related to when you scratch somewhere, if it itches, it's because that particular part of your body is in some kind of pain and when you scratch it, you cause another pain on top of it, so your nerves tell your brain to send chemicals to alleviate that pain. Whenever I'm getting a tension related headache I i... |
Why is there not a movement to ban junk mail that is equivalent to the movement that banned plastic straws? | My brother works for an internet security company. They go to a few big carrier networks, the guys who actually own the physical wires that makes up the internet, and pitch a sale that hey, if you buy our service, we can help you cut out all your criminal and illegitimate traffic. Their response: & #x200B; > Why? & #x2... |
Why do you get better performance when playing a PC game in Windowed (Borderless) than you do in Fullscreen? | One more explanation that I can think of is two GPUs. For instance if your processor has integrated graphics, but you also have a card installed. If your monitor is plugged into your motherboard instead of the card, exclusive fullscreen can only use the integrated graphics to render , whereas windowed mode can render o... |
Why can't all plastics be recycled? | Thermoplastics can be recycled because during their shaping only physical changes happen. Thermosets can't because during their shaping an irreversible chemical change occurs. Grocery bags are usually polyethylene afaik which is recyclable, so in this case it might be about cost, not about whether it's possible or not. |
If blood is circulated only in veins, then why do you bleed of any part of your body is cut? | Veins are the highways and freeways, but there's all sorts of little side streets and cul-de-sacs making sure the blood can get to every cell in your body.Blood is circulated in arteries, veins and tiny blood vessels called capillaries which are found throughout your skin. |
why are plastic bottles such a hot topic for pollution but glass bottles are never mentioned? Is glass better for the environment? | Something that hasn't been mentioned yet is what happens to glass vs plastic in the wild. Glass gets broken down until it is basically a little rock. Because it is heavy, it sinks in water quickly and does not get eaten by anything, and even if it does get eaten it is effectively just a sharp rock and so it gets passed... |
The saying goes “never add water to acid”. How come your stomach acid does not react when you drink water? | this rule has nothing to do with chemistry itself, but with operational safety. Adding water to acid makes the acid splash around. Adding acid to water makes water splash around. It doesn't take much of a guess which way is safer to handle. |
How is the Gold Standard a fiat currency, and how does Gold Standard currency go through inflation? | order". Even a gold backed currency has no value in itself, the paper notes are only valuable because a bank or sovereign *decrees* that it has value. In a gold backed currency the decree is on the form of "this piece of paper can be exchanged for a set amount of gold", which isn't that much different from the decree i... |
What causes animals to die of old age? | Some animals, like the lobster, can live forever, but die when the strain of molting become too great. For other animal, it's not the old age itself that kills: it's the problems that old age brings. Getting old mean accumulating small problems in our body, even in our cells, which replicate less and less well. So even... |
How do places like Churches or MacDonald's avoid losing internet over illegal download copyright strikes from ISP's due to random folks who use their net? | The church I attend had to shut down their guest/public wifi completely, because they received a letter from Disney saying that they would be fined a horrendous amount of money if the torrenting didn't stop. They suspected a particular neighbor, but there was no way to lock it down and not have it be a huge hassle for ... |
Is "yawning because of boredom" a cultural thing that is (unintentionally) taught to us or is it natural? And why? | The mechanism of yawning isn't known yet . One theory is that we yawn to supply oxygen to the brain. So imagine sitting in a room with many people for some time, poor ventilation, you sit still, no physical activity makes your blood flowrate slow down and this lowers the oxygen supply in the brain. So the brain trigger... |
Do baby hairs on our hairlines grow to full length if we let it grow? And why do they exist? | Also the hairs on your scalp, arm pits eyebrows etc are called Terminal hairs. The tiny peach fuzz on our face, stomach etc are called vellus hairs. Typically balding individual's terminal hair follicles turn into vellus hair follicles. And sometimes random vellus hair follicles can become terminal.. for example I deve... |
How does cruise control work? | [Proportional-integral-derivative], this is the secret sauce to any continuously regulated system. It's how your toaster toasts, how your oven cycles on and off, and how a lot of industrial applications regulate what is variable but has to hold, temperature, pressure, speed, intensity, flow rate, rotational rate In sho... |
how jumping in to water from a high place is a suicide | It's not the fall that kills you, it's the sudden stop that does. As you fall you continue to accelerate until you reach terminal velocity. Once you hit the water, you stop extremely fast. This can result in broken bones, punctured organs, and unconsciousness which, even if you survive, will still lead to drowning. |
Tuition Reimbursements and what it entitles. | Hi, I am an HR Benefits Advocate at a State college in Michigan - I process these all the time. The tuition benefit we offer for employees breaks down like this: - For 2 terms you can take 2 classes, greater of 6 credits and for the remaining term 1 class/4 credits - The classes obviously still cost money, and these fu... |
why is bacon so different from the rest of the pig? | The meat is same.. bacon isn't just meat. It's salt cured pork belly. You can cook just plain pork belly and it'll be like really fatty pork meat |
Why does the planet Venus rotate in the opposite direction than most other planets in the solar system? | I read about this many years ago. I believe the answer is we just don't know. At least when I was reading about it. There are theories about the thick atmosphere, or just with where it formed and tidal forces, but as far as I remember there are only theories and no answers. |
Why do restaurants bother serving free bread/chips etc.? | Because it's cheap and it keeps customers happy. Customers are already going to be ordering food anyway, but if you fill them up with carbs you can make the dishes slightly smaller, but customers will still leave feeling full. |
How can a photon have energy if it has no mass? | To answer your question in a purely mathematical sense You're probably familiar with the classical representation of Kinetic Energy as: KE = 1/2 x mass x velocity^2 and also Potential Energy as: PE = mass x gravitation acceleration x height Therefore, your assumption that a massless particle like a photon would have 0 ... |
Why are blueprints blue? Rather than black on white paper or any other color. | The blueprinting process was developed in the mid-1800s, when scientists discovered that ammonium iron citrate and potassium ferrocyanide created a photosensitive solution that could be used for reproducing documents. The process goes like this: Someone creates a drawing on translucent tracing paper or cloth. The drawi... |
Why do horses have horse shoes | Wild horses run around on grass and dirt, working horses often find themselves on rocks, cobblestone, gravel, or pavement. Working horses may also walk around a lot more than a wild animal would, depending on what they're doing. Not all domesticated horses need shoes, but those in high-wear, high mileage, or high step-... |
If Ethernet cable can transfer so much data, why not use this instead of HDMI and other cables for data. | There's one crucial reason that hasn't yet been addressed: the end user. Let's say that, as an experiment, a motherboard manufacturer decided to do this very thing, and replace all the ports with RJ-45 ports. The most obvious and glaring problem with this is how would you determine where to plug in any given cable just... |
Why does the US have squatters rights? | Because it can be difficult to determine if they have a legal right to live there. Especially if they've been paying electric and water bills for a while. That's not something the police can just roll up and determine quickly. So they have to go argue it in court, but in the meantime they're allowed to remain on the ch... |
If we go to the stars and look with a telescope can we see dinosaurs in earth? | No, and yes. But mostly no. When we look at a star, what we're actually seeing is the light that was emitted X years ago, where x depends in the distance to the star. This is due to the fact that the speed of light is finite. That means that it takes light a certain amount of time to travel from A to B. And so, if we w... |
What are the laws for if a man gets a women pregnant but wants to abort the child, but the mother refuses? Is the father still required to pay child support? | It all depends on the country and even regions within countries there isn't a set rule which covers them all. |
How can drummers/pianists have completely independent limbs/fingers? | As a drummer I can say that it's not so difficult, and if you have any desire to learn, you will. If you can slap your right thigh with your right hand1,2,3,4, and slap your left thigh with your left hand on 2 and 4, you're on your way. |
Why does looking into bright light sources damage your eyes? | Thought I'd add: Ionizing radiation also basically sunburns your retinas. This means that looking at certain light sources deal significantly more damage than they would through heating alone. This includes sunlight and hotter electrical arcs, as well as tube lights if you look directly at them for long enough. |
what's the difference between organic and inorganic molecules, and why is it important? | Organic = containing carbon. That's literally it. Steel is organic because it contains carbon. Water is not because it's just hydrogen and oxygen. Carbon is the most versatile element we know of. That's why it's the source of all life. There are other elements out there that are nearly as good, and they're strong conte... |
Is there a reason the color blue doesn’t appear very often in nature? | I found this article cause I also wanted to know, if you're in for some reading: _URL_0_", 'There is a really interesting podcast about colour that I listened to a few years back. It talks about the colour blue, and how even in literature it doesn’t come up until a lot later than you’d imagine because maybe we just cou... |
How do medical examiners know that a victim was still alive when cuts/bruises etc occured? | Antemortem injuries will become inflamed, but injuries made after death won't. Bleeding wont occur postmortem except in the scalp where there is a lot of blood or due to gravity. It can also occur if the head becomes bloated due to drowning. _URL_1_ _URL_0_ |
How does body clock work? | Our body releases a hormone called Melatonin which controls our body clock. In the night time its production increases which initiate all the sleep-related functions in the body. In the day time, its production decreases. So even if you sleep in the day you won't notice much difference as you get from sleeping at night... |
How can the furthest galaxy(GN-z11) be 25 billion light years away, when the universe is 13.77 billion years old? | Because the universe is expanding. The speed of light only applies to things *within* the universe, not the universe itself. So reality can expand at rates that exceed the speed of light. It should also be noted that the universe goes beyond what we can see. There are galaxies so far away we haven't seen them and, beca... |
how does a cowl around aircraft engine help with efficiency at high speed? | In a high bypass turbofan, the type of engine most commonly used on airliners, is 'high bypass' because most of the air is 'bypassed' around the combustion chamber/turbine. The turbine turns a massive fan at the front that focuses the moving gas molecules around the engine. If you removed the cowling, you would have a ... |
Why do common household items (shampoo, toothpaste, medicine, etc.) have expiration dates and what happens once the expiration date passes? | Cosmetics are tested using stability testing. You generally don't want to use cosmetics past the exp date as the preservative system can lose strength over time. Spreading something filled with microbes over your skin can make you sick if it gets in a cut etc |
Besides wealth, what other things seperate the upper class from the other classes? | It's just the wealth, fundamentally. Everything else - travel, hobbies, exclusive education, social experience, etc. - are all opportunities that only exist because of the wealth. Even better diet and access to healthcare leading to just a healthier person is wealth-based in many jurisdictions. Take two people of equal... |
Why do people freak out over sugary drinks but not all of the sugar in food? | Because you don't get full from drinking a 12 oz coke or even a 64 oz superbig gulp at 7-11 which if you don't add ice has over 500 calories from all the sugar in it. |
Since electrons flow from negative to positive, why are cars grounded to the negative terminal on the battery? | For historical reasons, positive and negative were defined before we knew about electrons. The convention was set that electrical current flows from positive to negative. Most electrical current is transmitted by electrons which we now know are negatively charged - so while the current flows from positive to negative, ... |
how does a bone marrow transplant work? | A\xa0bone marrow transplant\xa0takes a donor's healthy blood-forming cells and puts them into the patient's bloodstream, where they begin to grow and make healthy red blood cells, white blood cells and platelets. Patients receive high doses of chemotherapy to prepare their body for the\xa0transplant. |
Why when it's cold outside do you get a runny or blocked nose? | I never looked that up before. I always assumed it was a condensation thing. Cold, wet air condenses on the inside of my nose. Which is why it's very runny and not snotty. 🤷 |
Why does pouring warm soda into a glass of ice flatten it? | Warm soda gives up its carbonation faster. That's why opening a cold cans stays carbonated longer. The act of pouring out a soda speeds up the process of releasing its carbonation. When you pour a warm soda over ice you're gonna loose carbonation before the ice can cool the soda down enough to make it keep its carbonat... |
If adrenaline boosts our mental quickness and physical strengths, how come it isn't always pumping through our veins? | TL;DR at bottom Adrenaline is a vasocontrictor- basically decreases diameter of blood vessels where blood is not required at the time of emergencies Sustained vasoconstriction increases blood pressure- leading to hypertension. Moreover, it leads to increased heart beat- increased load on heart, susceptiblity to skipped... |
How do tattoo parlors get around copyright laws? | They are very small businesses, producing very few copies of any one design, so they generally just don't get caught. |
If humans as a species have less genetic variance than some small chimpanzee populations, how come we look so different from each other? | It's because environment are differents all around the world. I'm pretty sure if chimpanzees were all around the world , they would be different in each continent. |
If we use electron microscopes to see atomic nuclei but we can't see the electrons because they're smaller than the nuclei how do we use electrons in the microscope? | we don't see nuclei in electron microscopes, we see atoms. we use elections because they are charged and very light. The charge does two things: we can shape the electron beam by electric and magnetic fields , and charged particles interact with the charged electron hull on the atoms. |
if lactic acid is toxic to our bodies, why do our bodies produce it in the first place? | As i understand it when we push our muscles to far our body produces it as a boost to help push them the extra bit. Sort of like a stamina potion that has negative effects. I'm no expert that's just how it was described to me by a friend studying sports science. |
Why can the US government not just ban robocalls? | It's already banned, the problem is that the FCC isn't putting in enough effort enforcing the ban to actually stop them all. How much of that is up to the current FCC chairman not wanting to stop robocallers vs. just not having the budget to do it vs. having other priorities vs. stopping them being legitimately difficu... |
Since it's been proven that we can detect and harness brain waves to control objects in the virtual world, would it be insane to think that with further engineering we could create artificial telekinesis? | Do you consider radio controlled quadcopter drones to be telekinesis? If so, then yeah sure that's plausible. |
Why is Mercury poisonous? What exactly is it doing to the body, and why can it not be resisted? | Our bodies have lots of tiny, tiny machines inside our cells. These machines often have a bit of metal in them, which they use to do their jobs. For example, there's something called Haemoglobin in your blood. This has a tiny piece of iron at its centre. It uses this iron to latch on to oxygen and carry it around. Othe... |
How much does it really matter where I buy my gas? Are “name brand” gas stations any different? | Not really, gas stations don't profit much off of gasoline sales. Also many times the regulations are pretty high and the standard is controlled. There really isn't much competition for gasoline itself, the competition is all about getting you inside to buy things. |
Where does gravity even come from? | Matter creates a distortion in space-time, creating a gradient. The more condensed the matter the greater the distortion and the steeper the gradient. A good analogy is two people stretching a bed sheet out. Then a third person places a bowling ball in the middle. The bowling ball distorts the bed sheet. Then place a t... |
Why are we more susceptible to sicknesses and runny noses when we are cold? | Short answer, we aren't. We do however, gather together more closely. Spend more time inside so germs travel more easily. The biggest thing that really impacts the spread of diseases is the drier air. Your mucous membranes rely on water to protect you. In the winter time and any time when the heaters are pumping out al... |
Why can’t veterinarians work on humans? | Animals are *similar* but not identical to humans so not everything is the same. Plus we have licensing for actual human doctors and veterinarians didn't go through that; they might be better equipped to learn to qualify than the average person but they still don't have a medical license to work with humans. |
- Why do our muscles "burn" when lifting? What causes that burning sensation? | Inquisitor gave a good high level answer. The more detailed answer is muscles use a chemical called ATP for fuel. Storing energy as ATP is hard, so our bodies make it when we exercise. We first convert creatine phosphate to ATP. This is a quick conversion, but we only have enough stored for about 10 seconds worth of ef... |
How do my solar power calculators that I never expose to direct sunlight work for so long. | Calculators require very little energy to work so very little light is needed to make them work and it doesn't have to be sunlight any light will do. |
Why aren't there many naturally occurring liquid substances on Earth? Does matter have a "preference" for being in a solid and gaseous state? | Yes liquid state is much harder to maintain than solid or gaseous state. We even are lucky we have some liquid substances on Earth. Outside Earth liquids are rare. You need the right balance of pressure and temperature for a given matter to be liquid, outside that it's either solid or gaseous . |
what does tax withholding mean? | So essentially what this means is your employer will withhold an amount of money from your paychecks in order to pay to the different levels of government that pertain to the job you are working so you don't get a huge bill every year. Essentially it makes sure that more taxes get paid than would if you got your whole ... |
What's with all the hate towards Nestle recently? | Recently? No clue. But people hate them because they're pretty evil and want to strip people of basic rights, like drinking water. Also child labor. |
What happens to the sex chromosomes during meiosis? How are they divided up in daughter cells? | In each cell one of the x chromosomes remains dormant. The interesting thing is that the final product isn't composed entirely out of cells with the same dormant x chromosome. So women are composed of clumps of cells with different active x chromosomes. The method for isolating one x chromosome is the same method used ... |
What is the purpose of a USB killer? | Is there a positive application to throwing a brick through a store window? Is there a positive application to putting a flaming bag of poop on somebody's doorstep? There's not really much more to it than that. If you wanted to actually destroy your own computer for security reasons, this would be pointless. |
If we've discovered recently that modern humans are actually a mix of Homo Sapiens Neanderthalensis and Homo Sapiens Sapiens DNA, why haven't we created a new classification for ourselves? | Categorizing species is subjective as there aren't definitive lines between species throughout evolutionary time. Every child has always been the exact same species as it's parents but due to insanely minute changes eventually after thousands of generations we'll notice enough of a change to decide to name something di... |
How does skin tan? Why is it so dangerous without proper sunscreen? | Tanning is dangerous because the UV radiation in sunlight can penetrate the membranes of your skin cells and damage their DNA. When those cells multiply, there's a chance that they turn cancerous. To prevent that from happening, your skin tries to shield itself from the UV radiation through a substance called melanin, ... |
What are the differences in the degrees of murder? | I would like to say: My only experience with law is High School Mock Trial, and about 5 minutes of research, so I may be very wrong. I'm confident with first, but 2nd and 3rd I'm not so confident about, so grains of salt all around. 1st Degree: Premeditated murder. The murderer knew his intentions were to murder someon... |
How do you store medicine properly when it's hot?. | It's not that humid in your refrigerator. Particularly inside the air-tight bottles of medication. You can't leave the bottle open with refrigerated pills once you take it out, due to condensation, but inside the bottle inside the fridge, all is golden. |
How hasn’t natural selection weeded out individuals with bad eyesight, fatal allergies, and everything of the sort? | It's interesting that you bring up eyesight and allergies. Both of these may actually be more environmental than inherited. There's a lot of evidence that as a society becomes more industrialized, eyesight gets worse. It seems to be that the amount of light that we are exposed to as we grow up affects how our eyes deve... |
How are emergency numbers (e.g. 911) handled near borders of countries? | I assume you're talking about cell phones in this case. The issue exists not just on country borders but locally as well and is handled the same way. When cell phone companies deploy new towers they have to submit paperwork to 911 centers with am address and coordinates for the tower as well as showing antennas and the... |
why a diesel engine is so much more powerful than an gas engine. | It mostly comes down to compression ratio differences. The much higher compression of diesel engines causes combustion to go faster and hotter, which results in higher thermodynamic efficiency and more power. There are smaller factors, such as diesel fuel having higher energy density and diesel engines not suffering pu... |
why does a broken leg essentially mean a death sentence for a horse? | Essentially, for a bone to heal it needs a lot of rest. A heavy animal that spends all day on its legs cannot let the bone fully heal. It's going to be a very expensive operation and the horse will most likely be in pain for the next years. At this point, it's more humane to not let it suffer for years on end at every ... |
why is it that when you massage your own scalp/body you feel no satisfaction vs. the pure satisfaction when someone else massages you? | Right now I'm massaging my back using the corner of a wall and it feels really good, I do it regularly and it has helped me with back, neck pain and also headaches. |
- Why do nightmares cause you to get bad/poor sleep even though you are sleeping? | It's not exactly that nightmares are a cause of sleep loss but are more a symptom of things that do cause it. Overactive metabolism, extreme stress, chemical imbalance, Anxiety, Depression, Chemical withdrawal, Sleep Apnea, Restless Leg Syndrome, all of these can be disruptive of a regular sleep cycle and cause nightma... |
why are statues of men in the Roman time period always portrayed with tiny genitals? | I'm pretty sure that having small genetalia was a sign of intelligence and big ones where not. Kind of interesting to think about. |
why is using cruise control more efficient than simply maintaining the speed manually? | Because the ECU is better at it than you are. There are situations where a good driver can be more efficient than the cruise control but normally the cruise control will fluctuate less than a human. The power required to maintain a certain speed goes up as the square of the speed so the if you go a little above then a ... |
Why does our skin prickle when we start to sweat? | I notice half of the people know this sensation and half doesn't. I cannot explain for sure, but it has to do something with dry/clogged skin pores. I had an awful itching/prickling sensation on my face whenever I went outside, exercised or it was generally a hot day . I went to the dermatologist and she recommended me... |
how did Einstein realize that light will bend near heavy objects? | The curvature of space and time was something that was implicated in a lot of mathematics before Einstein, so there were a lot of hints that straight things were actually curved. It took him 10 years from special to general relativity so it took a genius 10 years to sort out the implications of special relativity. Spec... |
Why does CGI in recent movies not seem as realistic/detailed as Avatar (2009) with recent developments in filmmaking and computer animation? | It is all art. It isn't like this stuff is automatic. It still requires tons of skilled artists spending lots of time to pull off. Not every movie is going to have the time built into the schedule or the money to pay for it.time, budget, money, time, skill level of artist, did I mention time and money? Time and money, ... |
Why haven't we been back to the moon in almost 50 years? | I attended a talk by astronaut Chris Hadfield and he had this answer: Because we don't have the technology to do it safely. Currently, the only way we have of getting into space is to strap ourselves to an explosion, and hope it takes us there. It's not elegant. It's shear brute force. The Apollo astronauts were insane... |
what is happening when the computer loading bar takes way longer to complete the final 1% during the installation process. | loading bars are manually programmed, and not based in any quantitative value on your PC. Sometimes they are based on the amount of data downloaded compared with the filesize of what you're trying to get, but you also have installation loading bars - How do you know what exactly is 20% of the bar? Or 10%? How does sett... |
how can documentaries show illegal activity without any repercussions? | Dunno about Mexicans gov, but US gov can't force you. There is no crime to leverage you against for not saying anything. You have the right to remain silent. That is unless you're hiding a terrorist. Then it's free game to detain and interrogate you indefinitely. |
What are the applications of studying the fourth dimension? | It's not always directly related to the real world. If you take vectors as an example. You have which is a 2D vector, you have which is a 3D vector but you could also have without any issues. It doesn't always directly relate to physical properties. And even if it does relate to the physical world it doesn't have to re... |
Why are animals that are much stronger, faster and can easily kill us afraid of us? | For many thousands of years, we killed the animals that did try to attack us. The ones that didn't attack us survived, reproduced, and it's their descendants which flee from us now. Evolution in action. This is not the only reason , but it's a big part of it. |
How do fat burner pills work? | No. They don't work. Most modern ones are full of caffeine and caffeine makes you work harder. |
how do climbing vines find structures or trees to climb up? | It's not that they find them, it's just the successful ones are by something they can climb. If a vine starts growing in a field, it will die before it gets very big simply because nothing is around to let it grow tall. |
Why do hunters bother wearing any kind of camo when they have orange vests on? | The deer don't see in color, but they are smart enough that a big area of all one color with defined edges and boundaries, that's out of the ordinary. Also, it is literally much easier to see a person wearing one solid color than something that is broken up into different shades.It makes the human outline harder to see... |
Since CO2 is basically food for trees, won't extra CO2 make trees grow faster and bigger so earth will self-adjust the level like other cycles in nature? | Yes, the extra CO₂ does promote more pant life, and is *a* negative feedback effect that could limit the effect of global warming. But our positive forcing, burning so much old carbon, outweighs it; and there are also plenty of positive feedback effects to further complicate matters. So, if we stopped burning all that ... |
Why are our bodies so sensitive to even small temperature changes? | chemistry. temperature matters *a lot* to proteins . think of how a few degrees changes how meat cooks. *you're made of meat* the only reason it's not a big deal for you to be in different temperature places is because your body does *a lot* of work keeping your insides at the right temperature. |
How does Netflix stay in business? | It's not unusual to be in debt. Banks *normally* don't just give loans to anyone. They weigh the options, if history shows that you've always made good on your debts and your future looks clear, then you're highly likely to be approved for a loan. In the case of Netflix, they've been making money for a long time and th... |
Why do young people nowadays look more their age, than young people 40-50 years ago? | That's just selection bias. On the other end of the spectrum, Ringo Starr and Lars Ulrich looked like teenagers for forty years. Substance abuse definitely doesn't help though, and we never got to see what Hendrix and Morrison would have looked like as old guys to compare.It was a completely different era, for one. The... |
Why are gold, silver, gemstones, etc. considered valuable? | > Is it just because it's pretty? Yes. As much as we like to think we're evolved and civilized we are just monkeys with delusions of grandeur. We like shiny stuff. > Is it because it takes a substantial amount of effort to acquire, thereby making it not something the common person can get their hands on? Also correct. ... |
Why is it parrots can talk but other animals can't? | language is an evolved phenomenon from several dedicated neural structures in your brain. If you removed your Broca's area for instance, you would lose the ability to produce fluent speech. Animals lack the neural structures that are dedicated to linguistic abilities, and thus they are not able to create or comprehend ... |
how is it so difficult to go to the moon in 2019 even after all the technological advances - why haven’t we been back? | There was a massive incentive to get to the moon during the space race. It was a matter of national pride and both the Americans and Russians were trying to get there first. Now that getting to the moon has been checked off the bucket list so to speak, what's the incentive to go back? |
When does our brain decide which hand will be dominant and why? | No one really knows for sure. There may be a genetic component to it, but it may also come down to congenital conditions . There have been some studies in pregnant women that have found that handedness may actually develop before the spinal cord and brain are fully connected during gestation. We do know that left-hande... |
How 64bit OS run 32bit programs? | At least in regard to Windows, special software runs that sits between the OS and the 32-bit program. This software tricks the 32-bit program into thinking it is running on a 32-bit OS. The processor itself continues to contain the 32-bit instruction sets so the software doesn't have any issues running it. The OS emula... |
Why is it a big challenge to get people back on the Moon again? | 1) The equipment we used to do it in the 60s and 70s isn't around anymore, and the things we've invented since then are designed to do other tasks. It's not like buying a car where you can drive to the store, or drive across the country if you want, in the same car. The vehicle is designed specifically with the job in ... |
Why does fire turn from orange to blue the hotter it gets and why is the sun (a very hot thing) stay orange? | The fire isn't blue because it's hot, it's blue because it's burning methane or other chemicals that give off a blue flame when they burn. The color that it gets from its *temperature* ranges from red to orange, maybe a golden yellow if you've made it hot enough to melt glass. For a flame to appear blue due to temperat... |
Why did it take the entirety of human history to even figure out how electricity works, but then only 200 years to get to where we are now? | Since you could ask that about any discovery during the age of enlightenment, it's important to note the technological innovations happening at the time. Even before the Industrial Revolution the tools at the hands of scientists were getting really precise: this is the time of clocks, telescopes & microscopes, etc. A s... |
Why does grass die when it gets urinated on? | If it is spread out it is quite good for fertilizer, especially if you drink lots of water. If it is too concentrated, and you put it all in one spot, it's too harsh. That's why I piss walking backwards, while waving my hose back and forth for the environment. |
Why haven’t we returned to the moon in recent history if we were able to decades ago? | Because we've been there and done that. We surpassed that peak and on to the next one. It's like playing the same level over and over on a video game without moving on to the next one. No need to waste time and resources on something we did already and will get very little out of for doing it over and over. Time to mov... |
Why just landing on the moon is a big deal and how will it benefit us? | Landing on the moon is incredibly complex. & #x200B; It's only a scant 280,000 miles from Earth, but in our current ability, that journey still takes a long time, relatively. Thus, the problem becomes of where the moon will be. Not only that, but we don't have the ability to efficiently carry enough fuel to just make a... |
Why do skyboxes break when going out of bounds? | The designers make the sides of a texture that you're not supposed to ever look at invisible so that your GPU doesn't waste effort rendering something that doesn't matter. |
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