From: TURTLE              
To: OPUS                
Subject: Colors         
Date & Time: 05/14/91 00:46:29
Message Number 16796

>...if we have color blind people, why can't we have People Who See
>Colors Differently People?
 
Color-blind people have a physical problem with the receptors in their
eye or in the circuitry that processes color information in the optic
chiasm or the brain that results in information from some of the color
receptors not getting processed correctly. As a result, some of the
color information is missing. If the system works, it works the same way
in every member of a given species. If part of the system doesn't work,
you get color blindness or some other visual defect. Very simple, no?