AdrianTheFrog

I'm on 4gb of ram right now (travelling so I'm away from my desktop) and firefox is using ~2gb I think (only 4-6 tabs open though)

founding fathers?

yea, there's also the afterimage / auto white balance factor

also those are fun optical illusions

mildly unrelated, but have you seen https://en.wikipedia.org/wiki/Caf%C3%A9_wall_illusion and https://www.shadertoy.com/view/4dBfWK

IDK, I can't tell from looking at the 2015 CIE CMFs (I think these are the most accurate? also I used the firefox plugin "unpaywall" to see them as sci-hub wasn't working) if there are any completely identifiable red colors or not. I initially assumed there were, but I guess I don't really know (I had assumed any perceived color could be made from a standard red green and blue, but now I also don't know if that's true).

edit: if that assumption is true than there would be no way to produce photons of different wavelengths in a way that looks like a fully saturated red

also the falloff at the end of the spectrum might mess with that a little, it looks like there is a continuously varying ratio of red to green along the end of the spectrum, but I can't really tell

edit2: it also varies somewhat with age and among individuals apparently, so that might complicate things further

I don't really understand how USB stuff works (what is the difference between a hub, interface, and controller?) but from what I've seen I think a hub supporting 20gbps would probably be in the 5-15$ range and probably not larger than a few centimeters

If you have multiple ports driven off the same internal hub, they will share bandwidth.

I'm usually happy with increased efficiency as it represents an increase in performance in the future. Cost is something that seems much more inevitable to go down than performance is to go up, so the two metrics I look for in the state of the CPU market are peak single core performance and performance per watt. Of course, this only applies to observing the industry from outside, I'm sure if I was actually in the market for a new CPU right now I'd probably be happier with a worse performance per watt chip as long as it was cheaper.

yea I know thats why I called it a slippery slope, because if you know for certain that there's only one wavelength in the scene then you could tell its cyan, but if it could be any spectrum then you would have no idea

I called black a real color because if we see black, we know for certain there’s actually no light.

And yes I know all that other stuff.

Wikipedia calls metallic colors colors, which implies that any arbitrary brdf is now a color. Personally I would only call the photons travelling through the air at any specific point in space a color, and say that the object's color changes when you move it around. I guess you would still say that a red metal sphere is red though, so my definition doesn't really work.

I was saying there are times when you can't treat other colors as being made form primaries, specifically when the spectrum will later be separated. (by diffraction or by materials with a complex spectral response)

for example, you could have 2 clear yellow sheets that look identical when placed in front of a full spectrum white light. However, one lets through red and green and one lets through yellow wavelengths. Suddenly now they behave very differently when you put them in front of a green light - the one that only lets through yellow looks black and the one that lets through green looks green.

going back to the part where I labeled yellow as a slippery slope, its because we can't really see whether there are yellow wavelengths or not in examples like these or others

also, a fun side note, you can actually see diffraction patterns by looking through any aperture (but a diffraction grating will make it more obvious) and these respond noticeably differently to all wavelengths and look wrong if you only consider the primaries. So, technically, if you're looking at any scene through any sort of camera/lens system/eye, you can't treat the scene as only having 3 primaries as it would look (imperceptibly) different if you considered all wavelengths. Actually, recreating this video in Python is what got me thinking about this. If you look at a very bright white point of light made of very specifically only red green and blue wavelengths you might actually be able to see this, it should look like

instead of

(its very subtle and you might need to zoom in but it looks a lot more noisy)

sometimes suddenly you can't pretend color is just red green and blue, once you get diffraction or are using a spectral renderer or smth, but yea it works 99% of the time