Re: Color constancy

[Larry Smith <Larry.Smith@SNOW.EDU>]

At 2:01 PM -0500 11/1/00, John Denker wrote:
> At 9:15 AM -0700 11/1/00, Jim Green wrote:
>
> > > 2) The assumption that each of us "see" the same color -- we all receive
> > > the same wavelengths but likely we do not all perceive the same colors.
>
> Then at 09:47 AM 11/1/00 -0700, Larry Smith wrote:
>
> > Jim, why do you say that #2 is "likely"?  Is there reason to believe we
> > don't perceive the same colors (especially given that eye and brain
> > chemistry is similar from person to person, and discounting the exception
> > Herb raised of color-blindness)?
>
> The variable perception that JG mentioned is not just "likely" -- it is
> 100% guaranteed.  There is abundant evidence that color perception is
> nonlinear and nonlocal;

But you haven't made a case for it varying from person to person (assuming
they have the same chemicals in their retina).

Why would you perceive a different color than I do under identical
circumstances?

Larry