Recent comments in /f/explainlikeimfive
Ferocious_Armadillo t1_j6lf39v wrote
Reply to ELI5: why does low haemoglobin have such dangerous effects (stroke, heart attack etc.) by Away_Establishment45
Hemoglobin carries oxygen to every cell in your body. Low hemoglobin means less oxygen is getting to your cells. Different cells can go do long without the optimal level of oxygen they need, and so, those parts of your body get damaged. The amount of damage done to different parts of the body determines the effect on your overall health. Since certain parts of your body have really important functions and a high demand of oxygen (your brain, your heart) this could have especially bad long term effects.
phiwong t1_j6leyoy wrote
Yeah, well there are a lot of "natural" animal behavior that would be considered odd for humans. So it isn't clear why this would be normal for humans either.
Human psychology cannot be simply equated or compared to animal instincts or social behavior.
Abbot_of_Cucany t1_j6lep6z wrote
Reply to comment by Jiopaba in ELI5 why do your eyes adjust so fast to bright light but so slowly to darkness? by melig1991
I just have a night-light in my bathroom, aimed towards the toilet. That way I never have to turn on the main bathroom light at night.
BroscientistsHateHim t1_j6len76 wrote
Reply to ELI5: Why do computers need GPUs (integrated or external)? What information is the CPU sending to the GPU that it can't just send to a display? by WeirdGamerAidan
A matrix is a bunch of numbers arranged in a rectangle that is X numbers wide and Y numbers long
So if X is 10 and Y is 10, you have a 10 by 10 square filled with random (doesn't matter) numbers. A total of 100 numbers fill the matrix.
If you tell the cpu you want to add +1 to all of the numbers, it does them one by one, left to right, top to bottom one at a time. Let's say adding two numbers together takes 1 second, so this takes 100 seconds, one for each number in our square
If you instead tell a GPU you want to add +1 to all of the numbers, it adds +1 to all the numbers simultaneously and you get your result in 1 second. How can it do that? Well, it has 100 baby-CPUs in it, of course!
So as others have said a CPU can do what a GPU can do, just slower. This crude example is accurate in the sense that a GPU is particularly well-suited for matrix operations... But otherwise it's a very incomplete illustration.
You might wonder - why doesn't everything go through a GPU if it is so much faster. There are a lot of reasons for this but the short answer is the CPU can do anything the baby-CPU/GPU can, but the opposite is not true.
SilentMark1138 t1_j6led9v wrote
Reply to ELI5: when people give up red meat for lent, why do they always eat fish instead? Aren't chicken and turkey white meats too? by Inanimatepony
Like most religious practices, there are loopholes to allow rule breaking when someone with sufficient influence wants there to be.
Affectionate_Hat_585 t1_j6lec1r wrote
Reply to ELI5: Why do computers need GPUs (integrated or external)? What information is the CPU sending to the GPU that it can't just send to a display? by WeirdGamerAidan
One explanation I like is comparing cpu with superman and gpu with 1000 normal people. The cpu is powerful and can perform lots of instructions just like superman can lift heavy things easily. Gpu can perform simple calculations parallely just like 1000 children who are taught to do math calculation can outperform even superman or cpu if you can divide a task. The pixels need individual calculation. Cpu is slow because it is a single one or its cores are countable in hands which is doing the task. Gpu on the other hand has a lot of small micro cpu with a lot of core count. 1050 ti has about 768 cuda cores.
Pokemonobsessedlesbo OP t1_j6le9n1 wrote
Reply to comment by ItsAllAboot in ELI5 - why are bonded pairs okay in animals but not humans? by Pokemonobsessedlesbo
Of course, but the behavior we associate with pair bonding would be similar to the behavior we associate with codependency in humans. And I’m aware most animals do not pair bind but a considerable number of pair bonds have been noticed in both domestic and non domestic mammals, and many birds
Away_Establishment45 OP t1_j6le4vc wrote
Reply to comment by zgrizz in ELI5: why does low haemoglobin have such dangerous effects (stroke, heart attack etc.) by Away_Establishment45
Ok. I have another question. They did a blood test with 0.5 ml of the blood within 5 minutes of us entering the emergency ward and that’s where they found low hbg. Do they check for leukaemia in this test. Sorry if this is too particular
Aspy343 t1_j6le4cr wrote
Reply to comment by AbleReporter565 in ELI5: Why does the order of adjectives matter? by AbleReporter565
There's a super simple way of checking this, and that's to just say the sentence without the other person.
"Me and Joe went to the park" becomes "Me went to the park", which clearly sounds wrong.
"Joe and I went to the park" becomes "I went to the park", which clearly sounds right.
A lot of people think "Come upstairs with John and I" sounds right because of the "I" but when you remove the other person it becomes "Come upstairs with I", which is clearly wrong, so it should be "Come upstairs with me".
AdverseLuck8020 t1_j6ldxod wrote
Don't forget the nimbys. Places where a well to do land owner is so connected they say nah... put it somewhere else. Look for hard right turns in rural area highways. Also interest groups and neighborhood coalitions these days. Look at all the stink around I45 downtown Houston. Also keep in mind that turning a car 90 degrees at 70 miles per hour takes a lot of curved roadway. Think about how long the interchange ramps are around Beltway8 Houston.
ItsAllAboot t1_j6ldx5x wrote
1: Not all animals pair-bond. In fact, it's a minority of them that do
2: Co-dependent behavior involves FAR MORE behavior than just "a very close bond"
is_this_the_place t1_j6lds00 wrote
Reply to comment by Spiritual_Jaguar4685 in ELI5 why do your eyes adjust so fast to bright light but so slowly to darkness? by melig1991
Some headlamps have red and green lights — why also green??
Gigantic_Idiot t1_j6ldrul wrote
Reply to comment by neilk in ELI5: Why do computers need GPUs (integrated or external)? What information is the CPU sending to the GPU that it can't just send to a display? by WeirdGamerAidan
Another analogy I've seen. Mythbusters explained the difference by making a painting with paintball guns. A CPU is like shooting the same gun 1000 times, but a GPU is like shooting 1000 guns all at once
Musichord t1_j6ldney wrote
I think it might have something to do with what is described. Using your example, I read the first as a big wall, that is the colour brown, made of brick. The second one, I read a big wall, of brick brown colour (brick describing the colour) They provide different info- on the second sentence, I lost the info that the wall is actually made of brick.
darrellbear t1_j6ldbpy wrote
Reply to comment by AbleReporter565 in ELI5: Why does the order of adjectives matter? by AbleReporter565
Also, put others before yourself--it's not "Me and my friends went to the movies", it's "My friends and I went to the movies".
[deleted] t1_j6ldbej wrote
KeythKatz t1_j6lczdk wrote
Reply to comment by Likes_The_Scotch in eli5: Why do most airlines still use 2-pin audio jacks for the in-flight entertainment systems on their planes? by JJGLC92
Some are even 3-pin, where I believe the third pin is for power delivery for active noise cancellation. Then there's a level on top of that with metallic contacts between the pins, no idea what those are used for.
waltzinair t1_j6lcyg2 wrote
Reply to comment by My3floofs in ELI5: when people give up red meat for lent, why do they always eat fish instead? Aren't chicken and turkey white meats too? by Inanimatepony
I'm actually curious: Do you have a source of this historical fact?
I'm not Catholic by the way so I also know nothing about the story from within Catholic.
luxmesa t1_j6lcxv3 wrote
Reply to comment by WeirdGamerAidan in ELI5: Why do computers need GPUs (integrated or external)? What information is the CPU sending to the GPU that it can't just send to a display? by WeirdGamerAidan
Yeah, sort of. Another way of thinking about it is that the CPU is giving the GPU a bunch of legos and instructions because the GPU is faster at building legos than the CPU.
cmmosher t1_j6lcx1k wrote
Reply to ELI5: why does low haemoglobin have such dangerous effects (stroke, heart attack etc.) by Away_Establishment45
On top of hemoglobin carrying oxygen, it can also be a sign of an underlying condition. For example I was severely anemic and it was Leukemia.
RichardStinks t1_j6lcvfa wrote
Reply to ELI5: when people give up red meat for lent, why do they always eat fish instead? Aren't chicken and turkey white meats too? by Inanimatepony
"It's okay to eat fish because they don't have any feelings." Cobain 2:12
I can't say it's the most logical thing, but I do know that poultry is a no-no for Lent. The overall idea is sacrifice, fasting, and continued thoughts and prayers for Baby Jesus.
neilk t1_j6lcux6 wrote
Reply to ELI5: Why do computers need GPUs (integrated or external)? What information is the CPU sending to the GPU that it can't just send to a display? by WeirdGamerAidan
Think of it this way.
The CPU is like a chef in a restaurant. It sees an order coming in for a steak and potatoes and salad. It gets to work cooking those things. It starts the steak in a pan. It has to watch the steak carefully, and flip it at the right time. The potatoes have to be partially boiled in a pot, then finished in the same pan as the steak.
Meanwhile, the CPU delegates the salad to the GPU. The GPU is a guy who operates an entire table full of salad chopping machines. He can only do one thing: chop vegetables. But he can stuff carrots, lettuce, cucumbers, and everything else, into all the machines at once, press the button, and watch it spit out perfect results, far faster than a chef could do.
Back to the programming world.
The CPU excels at processing the main logic of a computer program. The result of one computation will be important for the next part, so it can only do so many things at once.
The GPU excels at getting a ridiculous amount of data and then doing the same processing on ALL of it at the same time. It is particularly good at the kind of math that arranges thousands of little triangles in just the right way to look like a 3D object.
Dog_N_Pop t1_j6lcqn3 wrote
Reply to ELI5: when people give up red meat for lent, why do they always eat fish instead? Aren't chicken and turkey white meats too? by Inanimatepony
Historically fish were actually considered closer to birds than land animals, and so their meat wasn't prohibited in the same way red meat was and is today on Fridays.
echaa t1_j6lckyo wrote
Reply to comment by WeirdGamerAidan in ELI5: Why do computers need GPUs (integrated or external)? What information is the CPU sending to the GPU that it can't just send to a display? by WeirdGamerAidan
Basically the CPU figures out what math needs to be done and tells the GPU to go do it. GPUs are then designed to be especially good at the types of math that computer graphics use.
neilk t1_j6lf4hb wrote
Reply to comment by WeirdGamerAidan in ELI5: Why do computers need GPUs (integrated or external)? What information is the CPU sending to the GPU that it can't just send to a display? by WeirdGamerAidan
The CPU is like "here are all the 30 thousand triangles that represent this thing, and here is the angle from which I would like to view it. Please do the complex mathematical transformations that a) rotate all 30 thousand triangles in space b) project all 30 thousand triangles from 3D space into 2D triangles on a screen"
There's also stuff to figure out what parts of the model are hidden from view, reflections, textures, shadows, etc, but you get it.