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Why is it dangerous for one blood type to be given to another person with a different blood type? | You should note that not all blood types are incompatible with different blood types. O- can be given to anyone, but O- can only receive O- blood. AB+ can accept anyone's blood, but can only donate to AB+. [Wikipedia]. Edit: grammar |
Why aren't there any conservative news-based comedy shows in the mold of Stewart/Colbert/Oliver? | Of course there are. Rush Limbaugh is one of the longest running radio comedians in history. His audience just doesn't get the joke's on them .This is only my opinion but I'm not sure whether something along those lines would be funny; of course, this could be just my own personal biases speaking. Also, a lot of humor ... |
Is Jupiter a failed star? | It has components needed for a star, but not enough of them. It needs to become bigger in order to shine. You might think of it as a failed star, but I'm not sure it is proper. Stuff does not have ultimate purpose. You could say, that Earth is a failed star, or Moon is a failed planet. It just happens, that Jupiter is ... |
why is reddit so obsessed with Weird Al? | I'd guess that a lot of redditors grew up in the 80's and 90's when he was huge and it's nice to see a performer from their youth doing well. |
What were airports like in the 1990s? | The airport experience hasn't changed that much in my opinion, yes security is more intense but other than that it's pretty much the same. We used to have to book flights through travel agents which in hindsight seems silly, but a good agent in those days was like having a good stockbroker or a decent mechanic. Biggest... |
What a producer/executive producer/director/etc. role is in a movie. | There is also the music composer and the sound designer who decides how the film should sound. They're often ranked has highly as the DP. |
Isn't there *anything* the general public can do to stop bills like CISA from passing? | It's proven that government in US does not respond to public opinion. The country is not a democracy anymore. |
FCC and net neutrality megathread. | From what I understand net neutrality was put into place in June of 2015. So if ISPs can now do whatever they want with speeds and packages, why weren't they doing it before net neutrality was in place?", 'Why do ISPs want to repeal net neutrality when they are already able to charge differing price points for internet... |
Why does the 72 hour hold for a voluntary psychiatric commitment exclude weekends and holidays? | Your question has been answered by several other people, but I just wanted to say I'm so sorry your girlfriend is having a hard time. I hope she gets some help, I found that the coping skills I learned there were not too bad. Please make sure to take care of yourself, I'm sure this is hard on you. Forewarning: When she... |
Why are antibiotic resistant bacteria such a big deal? Shouldn't the immune system be able to fight bacteria without the aid of antibiotics? | The immune system does a good chance of fighting bacteria. The fact that we're not all sick 24/7 is testament to that. But it can't win every war. Just read up on disease in the past. Massive epidemics that wiped out populations. More soldiers dying to infection than gunshots. Smallpox and Polio being rites of passage ... |
How do cousins work? Is my dad's uncle's child my first cousin once removed or my second cousin? | The easiest way to think about it is based on your grandparents. First cousins share a set of grandparents. Second cousins share a set of great grandparents. Third cousins great great grandparents etc. When your first cousin has a kid the kid is your first cousin once removed. When your first cousin has a grandkid that... |
Why do police use only two types of dogs for their work? | As others have pointed out, they use lots of breeds. GSDs and Mals get picked because they're better suited as dual purpose dogs. If your PD has just enough money for one dog, they'll train it to do the two most needed things: patrol and narcotics. While bloodhounds are great at scent detection, they're not awesome at ... |
Why is Norton hated so much? What makes an antivirus/antimalware program good or bad anyway? | As others have said, Norton AV was viewed as bloatware and noticeably slowed down your computer. As far as how effective it is this should be the site to use: _URL_6_ They've been around for over 15 years and have links to all kinds of free tools that all the AV companies make |
Can you own land on the moon? Could a nation form on Mars? | When you buy or sell a piece of land on earth you do so with the permission of someone who has both the willingness and ability to control the land. I.e., the sovereign government. There is no one that has the willingness and ability to control the Moon. Compare the high seas . These are vast wet areas that states eith... |
How are people able to paint graffiti on hard to reach places like freeway overpasses or the center divide on a busy freeway with no shoulder without getting injured or caught? | They use ropes and ladders depending on the spot. Sometimes all it takes is the ability to climb and some balls. Most people have lookouts to spot upcoming cars. Once they see a car coming they hide, unless they don't give a shit.I was at a stop light near a freeway overpass late one night. I saw a car on the freeway q... |
How come you can't really taste the food that's in your mouth if you don't breathe through your nose? | Because they've discovered that your [sense of smell is tied into your sense of taste]. In the same way that depth perception is an amalgamation of the sensory input from both eyes, our sense of taste is an amalgamation of the input from sensors in our nose and mouth. |
How do seemingly uneducated people come up with very complicated recipes of household products to create recreational drugs? | Easy: uneducated doesn't mean stupid. Common misconception. Education is just the acquiring of information. College educated people aren't necessarily smarter than non-college educated people. They just haven't gone to classes for 4 years to get a piece of paper. Intelligence is the ability to learn and innovate. A hig... |
A 4GB Micro-SD card and a 500GB micro-SD card are the same size physically, but what makes the difference in storage capacity? | One way they can do it is to make them all initially for the higher capacity. But when you're dealing with such a microscopic scale, the manufacturing process is not perfect, and parts of the chip will have faults. After the chip is made, they test it and find where the faults are. Any parts which are faulty, the chip ... |
Why do we wake up from sleep? | Sleep is split into stages which come in cycles 1 to 4 and REM . As you fall deeper into sleep you're actually progressing down from stage 1 to 4 which is deep sleep, then you move back up into stage 1 and without waking will enter REM sleep. Dreaming takes place of waking up. This cycling continues but gets shallower ... |
Pre 9/11 involvement in other countries. | I'm not sure exactly how the terrorists behind 9/11 came to despise the US, but I do know somewhat about our involvement in both Iraq and Afghanistan pre 9/11. So the United States had invaded Iraq during the Gulf War in the early 1990s in response to Saddam Hussein threatening to invade Kuwait. It was a short war and ... |
What do DJs actually do besides select the next song? | Your common every day DJ doesn't do much more then selects songs to set the mood. The classic concept of a DJ that made DJs so popular where artists who would take record tracks and right there on the spot make a remix out of them. |
is the way we walk genetic? | Also the way we walk is called your gait. Don't know if that's helpful, I just wanted to comment. |
how the Great Barrier Reef is now considered "dead" and what factors lead to it? | Basically, it's made up of thousands of organisms. Each absorb some chemicals and release some others. Pollution has changed the saturation of chemicals, killing some organism and making others thrive waaaay to much. Also, global warming makes enzymes inside of bacteria not work correctly. Which means, bacteria can't e... |
when cooking meat, why is it ok to use the same utensils at the end when the meat is cooked as you used at the start, when the meat is raw? | Uhm, usually I change it but sometimes I fortet, I actually never thought this, but I guess the meat it's super controlled and It's not so bad. I like the meat raw when I season the it before cooking it, I do it in the same plate I'm gonna use to serve it. I find it more tasty. I'm not saying it's the right thing to do... |
Why do some fabrics get softer when they're washed a lot, while others get rougher? | Think of the fabric like different types of hair, say your friend has really oily hair and you don't. You wash your hair about every other day, if not 2 days, while your friend has to wash her hair every day. If you guys switched routines, your hair would become dry and brittle from over washing, because you've strippe... |
When giving an IV or a getting a shot, how does the nurse/doctor know they're in the vein and haven't pushed the needle out of the back of the vein? | As a hemophiliac I have been giving myself injections since I was nine. When pushing to the needle your flesh gives a slight resistance. When you hit the vein you feel that resistance change. It's almost like pushing a loose brick out of a wall. This is the best way I can describe it. |
Why do airplane engines rev up so fiercely upon landing? | Or, if you're talking about an aircraft carrier, the engines revving up so fiercely as soon as the wheels hit is actual forward thrust, which will be very helpful in case you miss the wire that normally stops you. You don't have room on a carrier deck to stop yourself, and by the time you could notice that you missed t... |
How did we get out last names? | Why is it so hard .to use the search function..? Started as an occupational thing. You'd have your smiths give metal, tailors making clothes, millers refining grain, mssons refining stone, etc. And it evolved from there. People started having the same surnames so they changed for a more personal professional work becam... |
Why do companies often buy other companies for "Undisclosed" amounts while others buy them and openly say what they bought them for? | I business you generally do not disclose information that could be used against you. Let's say you own a business apparently worth $10 million, and I buy it from you. If I paid $5 million, people might wonder what's wrong with the company, and shy away. If I paid $15 million, people might wonder what's wrong with my an... |
Why are Piranhas so aggressive against other creatures, but not against their own? | They are generally not all that aggressive, except for when they are very hungry. In fact, during the wet season, they are found to be mostly herbivorous. It's during the dry season, when water level drops and thus cuts off food supplies, that they are mean. Most of their reputation is based on myths and a thing Teddy ... |
How can open sourced encryption algorithms be safe from hackers? (i.e. Bitcoin) | Let's say that you know how to make a key to open a lock. Could you build a key that perfectly fits a specific lock out in the world that you know absolutely nothing about, that you're not allowed to inspect, or even see? How many keys would you have to make before you made the one that perfectly fit this random lock? |
how come we did not hear anything about the meteorite before it hit? | The particular meteor that came down over Russia today was not very big. Likely only a couple of meters across. Maybe the size of a small car. While that seems like a decent size if you imagine it sitting on the ground next to you, it's pretty insignificant when it's hundreds of thousands of kilometers away, and moving... |
Why are the Republicans winning so many seats (in the both houses)?/ or why are the democrats losing them? | Senate seats are up for election every 6 years. All the seats up for grabs today were won when Obama overwhelmingly won his first election, and many Democratic senators rode along on that momentum . 6 years later, that enthusiasm that swept those Senators into power no longer exists to keep them there. Just to opposite... |
Why is gold and silver so valuable when it has very little practical use in everyday life? | During the gold rush, gold was essentially money in metal form. The US dollar was backed by gold. Historically, people needed a common medium of exchange . If you were a fisherman, you couldn't carry around a bunch of fish with you wherever you went to trade for other goods. Gold was soft and easy to work with. It was ... |
Why Bluetooth is not exceptional in delivering quality music to wireless headphones? | audio over bluetooth is just a digital transfer unlike analog p2 audio, bluetooth audio is first encoded and compressed , then transmitted and decompressed on the receiving end there are at least 3 encoding types.. the most common is called SBC. it is as good as a good mp3 file, if it is badly implemented, it will soun... |
How does "slingshotting" around a planet or star work? It seems like entering the body's gravity well would require you to expend additional energy to escape it again... | This thought experiment can be verified by physical experiment. Imagine an empty sink. A round sink with curved walls. The drain is at the bottom in the middle. Roll a ball into the sink. If the ball is rolled slowly it will circle the drain and soon drop into the drain. Roll the ball faster and faster into the sink an... |
Why do we get dizzy / lightheaded after breathing fast? | Random fact: the reason you will eventually have to stop holding your breath isn't that you need more oxygen, but more that you need to expel CO2. Of course, you do need more oxygen, it's just not the primary reason your body makes you exhale |
since knowledge can only be past down from generation to generation through communitcation, how does evolution know when it needs to adapt to a change in the environment. | It doesn't. Evolution does not work that way. Evolution suggests that, should an environment suddenly change, those who survive and can pass on their genes will make progress. Say for some reason it's evolutionary advantageous for a species to have a long neck, due to all the food only being at the top of tall trees al... |
Why do librarians need to have a Masters degree? | A librarian needs to have advanced information gathering and organizational skills. You need to know how to research, and how to begin looking for answers to questions you never thought of. You need to know how to organize information so that others can easily access it. There's a lot of esoteric skills that require sp... |
Why is adding acid to water safer than adding water to acid? Thinking of the rhyme "acid to water just like you oughtta, water to acid you might get blasted". | Because adding one liquid to another can cause it to splash. It's better to be splashed by water with a little acid than acid with a little water. |
Are power lines dangerous to the touch or do they have to be damaged to be of any danger? | Depends on where you are and the type of power line. In virtually all countries, the high voltage distribution lines will be uninsulated, and therefore extremely dangerous to touch - unless by some miracle you managed to grab onto one without being in contact with an earthed or grounded structure, such as the supportin... |
why do republicans argue that Obama and liberal policies will destroy the economy when the NASDAQ is just shy of breaking a new record high? | Should be noted Obama isn't really a liberal. It's just that conservatives are so far into the crazy right he seems liberal in comparison.the stock market is not a good indicator of economic successFew thoughts; * Many people are aware that the president has limited influence over short term economic cycles and do not ... |
Why do you get heatstroke in 98F weather if your body is 98.5F? | Body produces too much heat when winter isn't trying to kill it. 98F air isn't very good at removing the excess heat fast enough |
When/How do 24/7 stores do inventory? | I worked at a Walmart. We weren't a 24/7 location but they still had us do inventory during the day. Always a weekday, starting in the morning. When I was produce manager we did a lot of estimating, since our I hand quantities could be crazy. But one inventory the store manager decided we couldn't estimate. My usual 6 ... |
Why does it take hours to install big programs and games but seconds to uninstall it? | When you install a game it's like writing a book, you have to fill all the pages. When you Uninstall the computer cheats and just erases your table of contents and pretends the pages are blank for your next book. |
Why can't we do lethal injection by just injecting air into the bloodstream? | There's a constitutional ban on cruel and unusual punishment contained in the eighth amendment which has been applied to the states through the fourteenth amendment. This ban prevents excessively painful or indecent execution methods. This has shaped the way executions are carried out. for more information [click here] |
Why is it acceptable to wait an hour to see a doctor when you have an appointment? | It's not acceptable for doctors who don't see emergent cases. In most instances it's a question of practice management. If you don't like waiting, leave and find a new practice. We did that, and ended up landing at an awesome practice with folks who are not only great doctors, they're never late on appointments. There ... |
How do nurses avoid illness when they're so often exposed to contagious viruses? | Early on, they don't. They do in fact catch illnesses and bacteria and viruses. Being in a profession that exposes you to either sick people or a population without a great immune system gets you sick early on. Then you build immunity and a stronger system. I work in a school, and while I had a great immune system befo... |
Why chemical weapon is considered a red line and use of conventional weapons isn't? | Yes, but there's an international treaty that specifically prohibits the use of ANY chemical weapons, and a govt using it on its own people, is absolutely a red line I believe any civilized nation should have.I guess because in a war, having a severely poisoned soldier that needs long term medical attention is worse th... |
When a mammal gives birth to a litter, are all of the offspring "twins" i.e. have identical dna? | In animals that give birth to litters, the females release multiple eggs that are each fertilized by individual sperm. Each embryo has it's own unique DNA. There have been cases, however, where there will be two puppies born in the same sac/sharing a placenta. Those would be your 'twins'. |
Are our hobbies and interests entirely a result of our upbringing, or are we predisposed to take pleasure from certain things? | I read an article about identical twins who were separated at birth. They ended up with the same job with the same facial hair. Kinda neat. I'd look up the story, but I'm at work and I don't want to anyway.I think this is more of a /r/askscience question with emphasis on psychology. Good luck getting your answer! |
if Satan punishes bad people, why is he the bad guy? | In the Bible it says Satan is a prisoner, not the ruler of Hell. I think that's a misconception.Well, I'm a bit out of touch with the whole "Is Lucifer essentially the same guy as Satan" discussion, but I think according to Christianity they are the same. To bring a little diversity to the answers, I'll include the Isl... |
why do a lot of people prefer a salary over contracted hourly wage? | 1) A salary is dependable. It's much less likely than an hourly wage to get cut, and if it does you'll have substantial warning. If you're earning an hourly wage, you could come in tomorrow to find out you're only working half days until further notice. 2) A salary is steady. An hourly wage can change from week to week... |
Why do we "freeze" in life-threatening situations? Shouldn't our bodies be doing the exact opposite in those moments? | He's not freezing. He's trying to slow down and go in the opposite direction once he noticed the oncoming vehicle. He even manages to take one step backwards |
why do ADHD medications have the opposite effect on people who aren't prescribed them? | I'm sure it's much more complicated than this but a simplified version is: in a brain with ADHD the part of the brain that's supposed to slow everything down is not functioning up to speed, so other parts of the brain are acting before they can be coordinated Activate that part with a small dose of stimulant and it wor... |
My Drivers license doesn't have a blood type on it, also i'm a donor. | As stated by the others, you're unlikely to be given a transfusion in an ambulance, but it should also be added that they can test your blood type pretty much instantaneously. I had mine tested in front of me and it took seconds. So once you've got them to the hospital, you really don't lose much time doing so. |
When factories produce things like high amounts of carbon dioxide as a bi-product, why can't we chemistry them back into less harmful chemicals for the environment? | > why can't we chemistry them back into less harmful chemicals for the environment? In many cases this is both energetically unfeasible as well as technically difficult to perform. For example consider if you are burning a fossil fuel you are combining oxygen with the carbon of the fuel to release energy. To create bon... |
why shouldn't i have made this post at the gas station from my phone? | They don't, there's no recorded case of DOT finding a cell phone to actually cause ignition of gas vapors as the others have stated, but companies don't want to pay for the UL testing to prove every phone they design is safe. Interestingly enough there is currently only one company that makes intrinsically safe iPhone ... |
My washing machine has 4 sections: Perm Press, Heavy Duty, Knit and Delicate, and Pre-wash. What's the difference? | Pre wash is where you soak really dirty/stained clothes. The other settings are all about the level of agitation. Delicate: very little agitation, best used with a cold water washPerm Press: average agitation, warm washHeavy Duty: very vigorous agitation, if using with sheets/towels hot wash is best If you don't have w... |
Is there an advantage to parking diagonally compared to vertically? | Diagonally saves more space. In order to back out from a perpendicular parking space you need to leave more room between the rows, so people don't hit each other backing out. Diagonally, your angle of attack is more obtuse, so you need less space between rows.Each method has advantages, and good designers select the mo... |
Why do some towns still use fire whistles to alert emergency workers when we have cellphones, beepers and radios? | A complicated solution is not always better than a simple one. Especially if you would have to keep the simple system as backup, anyway. What if there is a major disaster and your primary system is down? Whistles don't go down. Unless they are dirty, dirty whistles. |
What computer viruses are and how they work. | It is a piece of computer code that tells the computer to 1) copy the code of the virus 2) most probably send it on to as many other computers as possible through various means and possibly 3) perform some other miscellaneous action, perhaps malicious, perhaps only simply annoying. It is really very similar to a biolog... |
How can the dollar be "too" strong and how does it negatively impact the U.S? | Some good answers here but let me boil down the essential symmetry: * A **strong** dollar is good for Americans traveling abroad , and it is good for imports . Top trading partners sorted by imports _URL_1_ * A **weak** dollar is good for the American tourism industry and it is good for exports . Top trading partners s... |
Why when one sees, or thinks of, something physically painful do they get a sensation in their junk? | You are an empathetic person and for some reason that pain's going straight to your balls. This may be because a kick to the balls is the most painful thing you've experienced. |
Why are there so many rectangles all around us? | I'd say it is just due to saving space. A rounded doorway is the same as a rectangular doorway, except for all of the extra, useless space it takes up. Oval cabinets are the same as rectangular cabinets, except the opening isn't as forgiving when you try to fit a large toaster oven into it. Straight lines allow for the... |
why do some people sweat substantially quicker/more often than others? | Omg this is me at work. Its 70 degrees and I will break out sweating. Our ac broke one time and it got into the high 70s. Having to wear a smock I was sweating like it was a fucking sauna Edit - everyone at work thinks I'm seriously fucked up. Its hard to talk when sweat is running down your face while customers are lo... |
Can the FBI continue to investigate the President even if the President does not want that investigation? | Technically? No. All Executive power in the U.S. is given to the President, who simply delegates away most of it to the various Federal agencies. This is the concept of the Unitary Executive which became kind of controversial under Bush Jr. However, everyone agrees that the U.S. Constitutionally has a Unitary Executive... |
Why is there so little religion in China? | When the CCP took power, they were militantly atheist. They destroyed a lot of religious establishments, severely restricted religious practice, and encouraged everyone to be atheist. While some people obviously maintained their religious beliefs and traditions, many did not. Also, religiosity is expressed very differe... |
Why does it look like car wheels are spinning backwards when the going fast and on film? | On film pictures are taken in series which, when viewed, give us an impression of movement. Essentially it is a lot of still-shots in series. What you are asking is an artifact of this process. You take a picture. Object rotates. Take another picture . It all depends on the timing of the camera's shutters. It may seem ... |
The point of high fashion | Fashion shows like those are not there to show how you are supposed to wear the clothes, it just shows what the designer's visions and inspirations are. You are supposed to take elements from it and make it work for your everyday wardrobe. For example, no one would wear a tull dress with huge holes in them, but I might... |
why do squirrels and other small animals run across the road in front of cars when they're safe where they were? | I've read before that if an animal is crossing or has crossed the road they will run back to the side of the road they came from because they know it is safe. They don't run in the direction they haven't explored yet because there may be unknown dangers they haven't had time to check for yet. |
why are most medications ingestion based, when Injection and inhalation both work faster? | If you need medication to act really fast, the doctor will not give you a pill! Pills are for medications that you take regularly , or when convenience and ease of use is more important . Sure, I like the pain killer to act quickly, but if it means I have to punch a hole in my skin first, or sit with an inhaler for 5 m... |
where does fat "go" when we burn it? | We exhale it. We literally breath it out. It's a common misconception that we dispose of it by means of excretion. Partly because it seems so ridiculous that we simply just breathe it away.Google " ted talk mathematics of weight loss " for a great demonstration and explanation of how we burn body fat and the byproduct ... |
Why do most STDs spread via sexual intercourse and not through other actions like making out? | A bunch of STDs only spread through blood & sexual fluids, but not saliva. So most STDs won't be transferred through kissing unless your mouth or lips are bleeding somewhere. |
Why are hot cola and cold coffee so gross? Why is almost every drink best hot or cold but never room temperature? | Nerve receptors are very sensitive to temperature. In case of taste receptor, their activity is altered by temperature, either reduced or increased depending on temp. If I had to guess I think an item like coffee is best served cold or hot or the activation of the bitter taste-receptor won't be suppressed. The phenomen... |
The missile knows where it is because it knows where it isn't. | Its an odd way of describing a PID controller. Basically the PID controller will use math to smoothly bring an input towards another signal . The size of the difference can be thought of as the missile knowing where it isn't . The strange wording for the video is trying to convey that the values can be positive or nega... |
What is better, holding back a sneeze or letting it out and why? | Letting it out. A sneeze is your body's way of expelling an irritant. Generally, if you sneeze, there's something that needs to come out. |
How places like the UK have amazing download speeds but places like the US have very low download speeds. | The cable network run by Virgin Media only reaches about [55% of the country]. Mostly in cities and large metropolitan areas. They recently [bought out] a smaller operator, Smallworld Cable. Virgin are the only cable TV and Internet provider in the UK - the two previous operators NTL and Telewest merged and were then b... |
how the Chinese water drop torture was such a cream and effective form of torture | Ever have a leaky faucet or tub? And the drip drip drip drip sound is unbearable? Well picture that, but it's dripping on your head. |
How come when you stand up on a train you're completely still, but when you stand on a bus you have to hold on to something to stay upright? | Train tracks are generally much smoother than roads. Trains don't do steep hills or sharp corners, so tracks have only very gradual changes in slope or direction. |
How do people at the NYC ball drop go into the pens starting at noon and not leave for beverages or to pee before midnight? | I have some friends that are staying there this year during that time, and the restroom breaks are assured by some sort of reservation they have with a local restaurant inside that area. So if they really have to use the bathroom, they use that shortly before they go outside, and they had a reservation to be in the res... |
Why has samurai swordfighting (kendo/kenjutsu) consistently survived while European knightly swordfighting has little practitioners? | The knightly swords were designed to combat armored opponents on a battlefield. They were poor duelling weapons compared to the rapier. They had long, heavy straight blades to punch through heavy armor . Despite what you might see on TV, the katana was NOT designed to penetrate heavy plate mail. Japanese armor was ligh... |
How do I get spam from my own email address? | To-address" etc. Spam emailers falsify these data fields to make it appear as though you are emailing yourself . and it avoids spam filters either on your email server/service or in your email client. The servers or "mail relays" that bounce the emails between email servers etc. have no way of knowing the email has a b... |
Why are lie detectors used during a police hiring process when they cannot be used in a court of law to determine someone's guilt? | A skilled examiner can get quite a bit from a polygraph. When I was at fort Jackson several of us got selected to go to the school where they train federal agents to administer polygraphs. It was pretty interesting. They basically gave is a thumb drive and had us install a virus on a computer. Then hooked us up to a po... |
How, and why do operating systems, and software become outdated? | Well, the windows 98 machine at my work says that neither become outdated if you don't want to pay for an upgrade. |
Why is it easier to follow a line when cutting something? | I assume it's to do with the fact that you're almost actually inside the material instead of on top of it, meaning there's sort of a guideline, not sure of the physics of it though, even then I can't cut a straight line to save my live but that's just me |
How the Western White men who join ISIS do not end up getting their head cut off once they're in ISIS territory? | They sometimes do. But ISIS is more than willing to let these guys fight for them. So they just choose not to cut their heads off. It's not like ISIS has some sort of requirement to cut off the heads of all westerners. |
Why is it not efficient to build mechanical batteries for grid-scale storage ? | > It would seem that you could build a dam with 2 reservoirs where you pump up the water to store and you use it as a normal dam when the grid needs it. It's called [pumped water storage] and we're already doing it. |
Why is it that I really want to be productive, but my brain literally does everything it can to stop me? | I recently found out that I could have ADD . Despite this likely being over-diagnosed everywhere, I believe it, after reading descriptions of living with it. When I'm at work, i really want to get something done, but instead i flip between monitors and windows for hours, trying to settle my mind to work on SOMETHING pr... |
When/where did the idea of prisons arise? | I think prisons have been around for as long as recorded history. They probably started more as a place to keep captives from war or a raid. But it's impossible to say. |
How does hunting (legally) benefit animals? Particularly those that are endangered? | One way is to cut down on mouths to feed. If there are too many of one species in an area with not enough food, if you kill one hungry lion then ten won't starve. That's an oversimplification, but hopefully helps provide a little insight. Also, licence fees can help pay the wages of the gamekeepers. And yes, I think sh... |
How do EMPs actually work? I know WHAT they do, I just don’t know HOW they do it. | Electromagnetic induction - if a conductor moves through electromagnetic field or the field shifts then an electric current appears in it. At low strength it can be enough to flip a bunch of 0s to 1s in electronics and glitch it out until it's restarted, at higher strengths it can cause permanent damage by overloading ... |
Why is rice so readily available and cheap? | -Rice is grown partly in flooded fields. This reduces the need for pest control as most weeds can't grow underwater. -Because of this rice is only hard to grow when first planting; afterwards controlling the flow of the water is all that is really needed. -Rice is harvested multiple times per year. -Rice is very easy t... |
How can anesthesiologists tell that patients are truly out, rather than merely paralyzed and unable to remember, but fully able to feel? | It's a thing. Anesthesia awareness. IIRC Stuff you should know/how stuff works mention it in one of their podcasts/articles on anesthesia. |
If we can store up to 128GB on a micro SD card, why are we still using big bulky hard drives in computers? | Micro SD cards aren't built to last very long. They're usually used in a camera or phone; somewhere where you will just want to retrieve files sometimes. The hard drive on your computer is being written to and read from constantly by the operating system. A MicroSD card would fail much faster in this scenario. They're ... |
Why no nuclear *research* subs? | Combat subs are built for combat. They're ill suited for research, which itself is a very vague. Research requires specialized hardware designed for the task at hand. That said, everything operates on a finite budget. Nuclear subs are expensive. Why pay 1000x the price of standard equipment to do the exact same job? It... |
If morphine overdose can be used to euthanize, why can't it be used in death penalty executions? | I vote for Nitrogen. It's the way I plan to go. Takes about 1/2 hour and is peaceful. Another option for execution - air bubble? No cost!", 'In Ohio, they use Dilaudid which is about 15x more powerful than morphine. |
How does the Earth's rotation effect an Aeroplane in terms of distance travelled? | It doesn't affect it because of conservation of momentum. The plane is still moving as fast as the surface of the earth, plus or minus whatever the jets do. So there technically would be a small difference between flying easterly or westerly, but that's insignificant. The earth is about 25000 miles around, so you would... |
Why can't I hear myself snore? | ELI5: Why can **I** hear myself snore? Sometimes when I'm taking a nap I hear my snores and wake up. |
Why is it so hard to study 1 hour straight, but you can spend 8 hours gaming or doing sth else with no problem? | Because you lack motivation and interest in the subject. As you progress in your studies, you should find yourself passionate about your area of specialty. If you don't, then pick another major. I'm not saying that every assignment will be a joy or that studying will become your favorite pastime. But, if you honestly d... |
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