Pocok5
Pocok5 t1_jeacz6y wrote
Reply to comment by SiCon6 in Eli5 Why is there still a famine in Africa despite the fact that they have been receiving foreign aid for decades? by Illustrious-Pen9569
You joke but one of the biggest problems of actually delivering aid to the hands of the people who go hungry is that along the way it passes through the hands of a local warlord and magically turns into AK-47s. Trying to skip the warlord also has drawbacks, in the form of said AK-47s being used to convince aid workers to hand over the rest of the goods. It mostly boils down to a catch 22 of "effective delivery of aid needs a stable and competent government to support it" and "people mostly experience famines because they don't have a stable and competent government".
Pocok5 t1_je21hqt wrote
Reply to comment by remorsefulDownfall in ELI5 How do scientists know probes (Like Voyager I) aren't going to get swept up in the orbit of another celestial body? by remorsefulDownfall
Planets are hard to miss and they do not take unexpected turns like some drunk git on a highway. If you know where Mars is now and its velocity, you can predict where it'll be in exactly a thousand years, probably down to a few tens of meters of accuracy.
Pocok5 t1_jaeuygn wrote
Reply to comment by KeyStomach0 in ELI5: why are male to male USB-C cables not dangerous like male to male wall plugs are? by KeyStomach0
> why can't do the same with wall plugs.
There is absolutely no scenario when a properly used wall plug is exposed when energized. Is is only possible when utter morons use "suicide cords":
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for extensible christmas lights they installed backwards so the socket end is near their wall socket. In that case, the user needs to suck it up and take it down then put it up the right way. It's an educational experience.
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for plugging in generators to a wall socket when the power goes out. This is illegal as fuck and dangerous to linemen working on the pole outside. An excellent way to bumble your way into manslaughter. When generators are used for a home, a generator inlet socket and transfer switch is used The house side is male with exposed pins, but due to the transfer switch it is physically impossible to have it connected to the house wiring while the house is fed from the mains, so it is safe.
Pocok5 t1_ja7prep wrote
Reply to comment by propably_not in Eli5: how do circuit board works by ots125
> a plastic board covered in fibreglass
The board is the fiberglass+resin. Usually. That is called FR-4. Sometimes you see ultra cheap boards that use paper and resin (FR-2) substrate. On top of that is one or two layers of copper foil, glued down, then after etching the traces it is coated with UV setting liquid plastic called solder resist.
Pocok5 t1_j6mkuar wrote
Reply to comment by NotJoeMama727 in ELI5: Why is having a lower refresh rate on a display better for battery? by NotJoeMama727
OLED also incurs extra power cost when switching stuff around faster (at the minimum, there are a bunch of multiplexers and a logic driver to convert from the display input signal - a serial protocol over a couple wires - to the thousands of pixel row/column lines) but power save mode on it is usually switching to a dark color theme which lets it turn off pixels and reducing overall brightness.
Pocok5 t1_j6mjprs wrote
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Lower power consumption from the CPU and GPU as they don't need to prepare and render that many frames
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Lower power consumption from the LCD panel - it takes power to flip the little crystals from transparent to opaque, and generally the faster you want something to work, the more power you need to pump in it, though I think that last part is only relevant if the screen also switches to a slower response time.
Pocok5 t1_j62yj3p wrote
Reply to Eli5: how does stomach acid not exit with feces when we have diarrhoea? Isn't it just a sphincter which should in theory not be infallible? by Thtanilaw1113
Stretched out, your intestines are about 3 times as long as you are tall. Even if you have the runs, it works well enough to digest food most of the way - at least it shouldn't be just chewed sandwich coming out, if it is, you might wanna hop over to the ER yesterday -, which includes reclaiming the acid.
Pocok5 t1_j2ds4ts wrote
Reply to comment by PofanWasTaken in ELI5: What makes the rust on a rusty nail different from the rust on shaving razors to where one needs an immediate tetanus shot and the other happens daily by DrySyllabub2563
Turns out there's only so much padding you can fit in a helmet, so competitive in-situ blacksmithing sessions were the go-to method of settling disputes for a good while.
Pocok5 t1_j2dplxg wrote
Reply to comment by PofanWasTaken in ELI5: What makes the rust on a rusty nail different from the rust on shaving razors to where one needs an immediate tetanus shot and the other happens daily by DrySyllabub2563
You can stick caltrops in dung so they are more dangerous than "3cm nail in the foot" would ordinarily be. For actual handheld weapons, keeping them in good, sharp condition is kind of a priority, since it's small comfort to know the dude you scratched had a bad time a week after he partitioned your ass like it's Poland. Of course peasant armies often went to war with whatever pokey tool they had, and you can absolutely get tetanus from getting stabbed by a hay fork or a straightened scythe. Against armored opponents, sharp weapons are of little use, so knight vs knight combat would have been maces and hammers mostly, and those don't do deep stab wounds anyway (except war picks and morning stars
Pocok5 t1_j2dgde8 wrote
Reply to ELI5: What makes the rust on a rusty nail different from the rust on shaving razors to where one needs an immediate tetanus shot and the other happens daily by DrySyllabub2563
Tetanus is not related to rust. Tetanus lives in the soil outside and only infects you if the object you get stabbed by was outside, exposed to contamination by rain splatter and such. Exposure and rain also happens to make metal rusty. Getting tetanus from a rusty nail outside is correlation not causation. You can also get tetanus from a completely rust free garden tool if you stab yourself with it.
Pocok5 t1_j2dahp1 wrote
Reply to comment by Blautopf in Eli5: what stops separatists from just declaring there independence? by BeautifulAd2418
Not much to debunk about it anymore, there have been many studies about how it does squat. People don't vote for it because it is effective.
Pocok5 t1_j2d9l01 wrote
https://en.m.wikipedia.org/wiki/Sherman%27s_March_to_the_Sea
https://en.m.wikipedia.org/wiki/Yugoslav_Wars
https://www.reddit.com/r/europe/comments/spf1zl/the_ruins_of_grozny_chechnya_after_it_was/
Depending on the country, nothing stops people from declaring anything. Trying to actually act on it however tends to invite a lot of dudes with guns and explosives to help your body parts declare independence from each other.
Pocok5 t1_j2ajxdq wrote
Reply to comment by EaddyAcres in ELI5: 1.5 liters of softdrink (coca cola) 1.5 kg as well? by kz21n
> a pint is a pound the whole world around
> US pints not the UK
So that was a fucking lie.
Pocok5 t1_iy90a4l wrote
Reply to comment by phiwong in ELI5:Why aren't ultracapacitors used more often as range extenders in Hybrids? by EvolutionVII
Plus the extra efficiency loss of mechanical-electric-mechanical conversion.
Pocok5 t1_ixq2k5l wrote
Reply to comment by blry2468 in ELI5: Whats does compute credits in Google Colab actually do to the code running speed as opposed to normal free Colab by blry2468
If it's just that then it's no issue, in fact it is integral to how CUDA works (I'm assuming loop step is constant over one run of a loop). You get the index of the current thread and you can use it - for example the CUDA prime check example is "check the first N integers for primes" -> start N threads and do a prime check algorithm on the thread index. The only problem happens if your loop #n+1 uses data calculated during the #n loop.
Pocok5 t1_ixpxqo9 wrote
Reply to comment by blry2468 in ELI5: Whats does compute credits in Google Colab actually do to the code running speed as opposed to normal free Colab by blry2468
A GPU can do a shitton of data-parallel stuff. If you find yourself doing the same operation over a ton of data points, it's worth thinking about whether you can do it all at the same time. Since you are doing python, check Numba https://carpentries-incubator.github.io/lesson-gpu-programming/03-numba/index.html
https://numba.readthedocs.io/en/stable/cuda/cudapysupported.html
Pocok5 t1_ixpumno wrote
Reply to comment by blry2468 in ELI5: Whats does compute credits in Google Colab actually do to the code running speed as opposed to normal free Colab by blry2468
> It is completely conventional python code.
So, you're not doing any GPU compute at all? Only CPU? See if your algorithm can be parallelized on a GPU (a good sign that you can do so is doing the same operation over elements of huge arrays where computing the result depends only on the input array - a convolution is such, trying to do fill a vector with a fibonacci sequence is not).
Pocok5 t1_iuh8z6j wrote
Ever heard of Second Life? It's basically an online 3D role-playing game where you can make an avatar character and go hang out with others. Zuck wanted to make a Facebook-flavored VR version and marketed it hard to companies as the "future of customer engagement". Zuccboi just happens to have forgotten to check whether people are actually stoked about spending a thousand dollarinos for a VR kit only to spend their time in 3D Facebook Advertisement-Land. So, you know, people who would have been interested stuck to their usual haunts in SL, VRChat etc.
Of course it didn't help that when their actual software came out it had such shitty graphics that it made early 2000s games look photorealistic.
Pocok5 t1_iuh812r wrote
Reply to comment by frakc in ELI5: Why are computers more vulnerable to hackers than phones? by TeaTime7079
They can at most test if it's still UNIX-like. In fact the two diverged as early as what version of UNIX they were based on. BSD -> Berkeley Software Distribution. Linux was modeled after AT&T's UNIX.
Pocok5 t1_iuh6ono wrote
Reply to comment by breckenridgeback in ELI5: if Earth rotates so fast, why does it always look still from outer space? by ShesOver9k
From low orbit the rotation is basically unnoticeable. The ground moves under you at 400-something m/s but you yourself are flying by at 7000+ so you're just trying to spot the ground move by under you slightly slower than expected.
Of course at near GSO you'd observe the earth being almost completely motionless because you have almost the same rotation period over it as the surface (you'd get to watch the dusk/ dawn line move over the surface at the expected speed though)
Pocok5 t1_iuh699s wrote
Reply to comment by frakc in ELI5: Why are computers more vulnerable to hackers than phones? by TeaTime7079
Linux and BSD are different operating systems. They both took inspiration from UNIX hence the similarities.
Pocok5 t1_iueja0t wrote
Reply to ELI5 how can a hacker crack a password but avoid the "login attempt lockout" timers? by otherother_Barry
You don't crack passwords sitting in front of the login prompt. You use some exploit that lets you get into the backend of the system without the password then copy the whole ass database to your own computer. Or you do some social engineering and ask somebody who has a password that lets you get at the database to tell you. From there you can poke at the hashed (hopefully lmao) passwords at your leisure.
Pocok5 t1_iuadvsa wrote
Reply to comment by Natural-Bear-1557 in Eli5: Anyone who knows their military history. Why was ‘going over the top’ used in WW1? by [deleted]
*pyrrhic
Punic is when you try three times, get flattened and your backyard gets salted.
Pocok5 t1_iu1maj8 wrote
Reply to comment by Frisky_Picker in PsBattle: This deep-sea anemone by omnidot
How about you read the bot post in its entirely?
Pocok5 t1_jefef4t wrote
Reply to comment by remarkablemayonaise in eli5: Why do seemingly all battery powered electronics need at least 2 batteries? by OneGuyJeff
> very specialised single use.
You mean coin cells. CRxxxx coin cells are all single use Li-MnO2.