My fiancee' and I have the exact same disagreement
about Cray J90
racks. We'll both be standing in front of one, I'll say "this is
brown!" and she'll say "you're nuts, that's gray!"
Is there some difference in visual perception going on
here?
There very well could be. There are multiple alleles for many of the
genes behind colour perception, and at least one of them is on the X
chromosome and thus a woman may have two different copies (though it's
not entirely clear whether that would actually give her tetrachromatic
vision). But yes, it is entirely plausible that the same incoming
spectrum produces clearly different percepts in different people - and
of course it's also possible that different people have learned to use
different words even when the percepts are as similar as they can be.
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