Recent comments in /f/explainlikeimfive
lsquallhart t1_iuh2b88 wrote
A panic attack is when fight or flight is activated, but there’s no apparent danger. This can be overwhelming because your body is amped up to fight or flee something like a … bear attack … or a car crash
But it ends up being useless and you’re consumed with and overwhelming feeling of dread.
I used to suffer from them and someone told me to “imagine a huge dog on a leash that’s trying to bite you, and it’s right in front of your face, gnarling and gnashing … but even though it looks scary … it can’t hurt you, because it’s at the end of its leash”
I used that mental trick for years until they subsided. I still get them now and again but people don’t even notice it’s happening anymore
averysillyman t1_iuh2a5d wrote
Reply to Eli5 Government Bonds - interest rate? by Snacktapus
> Bonds are sold on the secondary market at market value but that is just between private investors right?
Let's say the market value of a government bond on the secondary market is a 4.5% yield. (If it's a bond that pays exactly 4.5% then it will cost 100. If it pays a higher or lower coupon then its market price will be adjusted so that it yields 4.5% when purchased)
If the government goes and offers to sell new bonds on the market at the par price of 100 and is only offering 4% interest, who is going to buy them? If you're an investor, it's much better for you to just buy the existing bonds on the market which give you a 4.5% return. If the government wants to sell new bonds it's going to have to offer a rate that is competitive with the bonds that are currently on the market.
frakc t1_iuh28js wrote
Reply to comment by IronCraftMan in ELI5: Why are computers more vulnerable to hackers than phones? by TeaTime7079
Ios is based on mac os, which is linux bsd operation system.
Linux F1 exploit was around at least 20 years, but was discovered around 5 years ago
Lunux is more localized not in terms of supporting less, but in terms of access. Eg on windows application is spread to many different places, which has different access levels
Have you seen phone which supports floppy disk? There are so many more protocols which computers support. Especially on system level.
rasa2013 t1_iuh22a9 wrote
There's a lot of things that can spontaneously kill anyone. Random blood clot in the wrong place, for example. And old age predisposes you to having those kinds of events and also not recovering from those kinds of events.
E.g., say an otherwise healthy person gets an active heart attack. Some people, for unknown reasons, their heart will try to power through the problem and keep pumping. It hurts and is not good obviously, but it could buy them time to get treatment. But strangely, some people's hearts will encounter this problem and just stop functioning. We don't really know why every time. It's partly genetic luck though.
Otherwise, death is usually from a chronic condition of some kind, not entirely unexpected. It's a process. You don't just die all at once. Your body exhausts itself slowly building from the primary chronic problem, like a bad liver. And it's in your sleep because eventually, your body doesn't have the resources to actually keep your brain fully conscious.
For example, my grandma was around for two weeks after we all agreed to stop the main healthcare and go for hospice instead. She was awake and "fine" in the beginning. no real bad pain or anything. You wouldn't know just from looking at her that she was dying. we could chat. But she no longer felt hunger and her body didn't really produce waste normally. as the time went on, she spent more time asleep. And eventually she didn't wake up much at all.
IronCraftMan t1_iuh1ovt wrote
Reply to comment by frakc in ELI5: Why are computers more vulnerable to hackers than phones? by TeaTime7079
Almost none of that is true.
> Computers has much more legacy code to support and that create a lot of vulnerabilities.
Not necessarily.
> Also computers have to support much more protocols, which also create some vulnerabilities
What protocols do computers support that your phone doesn't? On the other hand, phones support many protocols related to cellular connections, texting, calling, nearby communications, etc.
> ios uses linux cores
Nope.
> which are more localized and have less attackable structure.
The Linux kernel is anything but localized, it supports many more architectures than Windows.
> But most importanly linux problems are much less known, because it became popular relatively recently and some thing maynot be found yet.
You say that as if you need 10 years to develop an exploit. Not even close, many exploits are found due to new features with poor implementations. In any case, I'm not sure how true the claim that Linux has only recently became popular.
The real answer is defense in depth. App Stores provide a much higher barrier to entry, you can't just build an app and release it, you must sign up to a developer program and sign your program (even then, there's no guarantee that your app won't be immediately blacklisted after being found to be malicious). Even on Android, users need to explicitly allow apps from outside of the Play store. In addition, every app is sandboxed and has limited to access to files as well as hardware and software resources. Pair that with an immutable, signed system volume along with signing and verifying every program that runs and it becomes extremely difficult to attack.
All of these tactics could be applied to PCs, it's just that some of them significantly limit the user's control of the PC (and thus the usability), while phones have never really had that freedom in the first place.
Kaitlyn_The_Magnif t1_iuh1k45 wrote
When our DNA strands are replicated during cell duplication, the very ends of the strands are destroyed. That's ok because on these ends, there are caps called telomeres. The telomeres are very long, so they can be broken down bit by bit over decades of replicating. But eventually, the caps run out and our actual DNA begins getting destroyed. Our cells and organs can no longer replicate and function, so the cells die.
Interestingly, there are a few organisms that have a protein that repairs telomeres. This allows them to live forever, as long as they aren't killed by something.
The lobster, for example, and a more recently-discovered jellyfish that can actually reverse its aging and go back into its younger forms using this process.
ttubehtnitahwtahw1 t1_iuh1hrh wrote
Reply to comment by varialectio in eli5. why is snow white but ice is clear?? by Divide-Pretend
Probably similar to polar bear fur.
[deleted] t1_iuh1g1i wrote
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Piepally t1_iuh1aza wrote
Reply to comment by Talik1978 in ELI5 Why are airport ceiling so high? by TrShry
You mean jed mosely?
Jackhow123 OP t1_iuh18qn wrote
Reply to comment by oblivious_fireball in eli5: why can't humidifier be in direct sunlight? by Jackhow123
fair point
frakc t1_iuh13p0 wrote
Reply to comment by Writerro in ELI5: Why are computers more vulnerable to hackers than phones? by TeaTime7079
Where it was mostly in embeded forms, with greatly reduced features, which hackers could exploit.
waylandsmith t1_iuh1065 wrote
You may not want to know the answer to this question: Poorly.
Writerro t1_iuh0z6f wrote
Reply to comment by frakc in ELI5: Why are computers more vulnerable to hackers than phones? by TeaTime7079
> linux problems are much less known, because it became popular relatively recently and some thing maynot be found yet.
Not true. Linux was very populary for a loooong long time. But not on a customer devices but on routers, servers et cetera where often it is much more popular than Windows. So there was an incentive to find bugs and exploits in linux/unix operating systems for a long time. And I would argue that it's easier to find them in linux because it is open source.
[deleted] t1_iuh0y98 wrote
Reply to comment by wilbur111 in ELI5 How did knights participate in tournaments like jousting without killing themselves? by QuantumHamster
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SirDooble t1_iuh0x1i wrote
Reply to comment by Uselessmedics in ELI5 How did knights participate in tournaments like jousting without killing themselves? by QuantumHamster
So, I guess the trope of two rival jousters going at each other, one unhorses the other, and both get on foot to duel, is probably quite impractical.
Jason_Peterson t1_iuh0ixj wrote
If you made a stack of the particles next to or on top of one another, then you still wouldn't see them because the whole stack would be only 1 unit wide. If you had a pile of a significant width, the particles would probably be easily disturbed by wind and rise up like smoke. If the substance could burn, it would catch fire and explode easily, or settle down and cover surfaces like soot.
waylandsmith t1_iuh0gmp wrote
Reply to comment by Purplekeyboard in ELI5: Why are you more likely to get sick if you get drenched in the rain? by Rockin_N
TIL that one of the rules of the sub is "Questions with a Flawed Premise" and you can flag these!
No-Conference-8451 t1_iuh0e8b wrote
Reply to comment by deep_sea2 in ELI5 Why Can't Modern Europeans treat this winter like medieval Europeans? by KgPathos
But back then, there were real men Not pussies like today
/s
Clannishfamily t1_iuh0dd5 wrote
Reply to comment by lsc84 in ELI5 How did knights participate in tournaments like jousting without killing themselves? by QuantumHamster
I’m glad to see someone talking about CTE. I’ve only just become aware of it from a Ted Talk and it’s horrible.
Reinventing_Wheels t1_iuh0845 wrote
Reply to comment by cipher315 in ELI5: How exactly do we get some much power from engine now, than we did 40, 50, 60 years ago? by Micromashington
There's a big difference between how airplane engines and automobile engines are rated for power output. Airplanes have to be able to put out their full rated power for extended periods of time, without suffering any ill effects. Cars only put out peak power for a few seconds at a time while accelerating. Once the car reaches cruising speed, it may only be using a tiny fraction of the peak power output the engine is capable of.
RSA0 t1_iugzw3c wrote
Reply to ELI5 how can a hacker crack a password but avoid the "login attempt lockout" timers? by otherother_Barry
Most hackers don't hack one specific account: they try to get any account. So instead of trying many passwords on the same account, they try the same password on many accounts. And because accounts have separate lockout counters, they are not getting triggered.
Of course, good websites also count attempts per IP, but a hacker can buy a botnet (a lot of computers infected with a virus) to get a lot of disposable IPs.
When hackers target a specific account, they usually come prepared with a short list of possible passwords - which they could get by hacking the same person on a different website with bad security. That's why experts recommend you to never use the same password on several websites - if one of them get hacked, they'll come for all the others too.
SnakeBeardTheGreat t1_iugzvd6 wrote
Reply to comment by shinginta in ELI5 How did knights participate in tournaments like jousting without killing themselves? by QuantumHamster
Yes however if you look it up people died on the field of play.
WRA1THLORD t1_iugzswg wrote
Reply to ELI5: if Earth rotates so fast, why does it always look still from outer space? by ShesOver9k
also as well as what others have already said, some space craft often orbit in geosynchronous orbit, which means they hold position above the earth by moving at the same speed as the rotation, so if you and the earth are rotating at the same relative speed it will look like it's not moving
[deleted] t1_iugzro6 wrote
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Luckbot t1_iuh2boa wrote
Reply to Eli5 Government Bonds - interest rate? by Snacktapus
The government has to match the secondary market. If they bring out bonds that perform worse than existing bonds then noone will buy them and instead grab existing ones from the secondary market instead.