> So how do you know that what you perceive as red isn't perceived as a totally different colour by another person? Your eyes and brain define a certain wavelength of light as what you have been told is red, but maybe what everyone calls red is actually brown or blue. (Don't ask me to whom, though.)

I thought the exact same thing when I was in second grade (half a lifetime ago)! That is way moby that you would think the same thing! I thought, "Well, what if what I think is red is green to someone else, but they call it red because that's what they've been taught?" That would be spooky.

Morris Cecil "Deranged minds think alike" Glalet
Tue 12 Oct A.D. 1999