In comparing notes with my Philosopher I am chagrined at my own color-blindness.
Color-blindness is not a defect of the eye, but a defect of the brain.
In color-blindness, the system is reduced to one or two dimensions, instead of three.
It is a case of color-blindness, as it were—supposing you two were colors.
Apart from color-blindness and such possibilities, we see the ...