that's not how real light works |
It is how the human eye works.
But that doesn't matter. What matters is how the
brain perceives light. You can take it in a single, pure wavelength, or you can take it as a mixture of actually distinct wavelengths. It all gets transformed to a hue somewhere along your brain's idea of the color spectrum.
yellow-blue is an impossible color. |
"Impossible colors" aren't real -- they are a trick played on your brain.
I don't actually understand what we're disagreeing on. |
I'm disagreeing with the idea that orange and red have no overlap (specifically, that our perception of red and orange have no overlap).
You stated that "They don't even look remotely similar to me" and posted images of very a distinct red and orange. But the Portal 2 orange is often a very saturated, bends towards red, on fire orange.
But even if you are looking at a very distinctly not-that-red orange, it is still redder than yellow, making for an easy red-yellow-blue -- '
it's red' kind of response. Hence my comment in Klingon:
Because they are the same color.
Of course they are distinct colors, but in terms of
perception, they are not so distinct as colors on opposite sides of the color wheel, which is what I thought your question was about in the first place: why do people say "red" when it's actually orange?
The human brain, when asked to make a quick judgement, will often choose the grossest degree of discrimination, particularly when further computation is irrelevant in context.