There is an interesting article in the Discover magazine for June about Mike
May of GPS fame.  As soon as I see it on the web site, I'll post it.
However, the point of the article is that, even though the physical process
of seeing can be enhanced, the interpretations made by the brain from the
images presented is at least as important as the physical seeing of those
images.  This sounds very reasonable to me.  How many times have we, as
blind people, interpreted a sound that we have heard and have our sighted
colleagues and/or friends say "boy, your hearing is good."  But, in fact,
all that has happened is that our brains have learned to interpret a certain
sound as, for example, a quarter dropped.

          Bud


VICUG-L is the Visually Impaired Computer User Group List.
To join or leave the list, send a message to
[log in to unmask]  In the body of the message, simply type
"subscribe vicug-l" or "unsubscribe vicug-l" without the quotations.
 VICUG-L is archived on the World Wide Web at
http://maelstrom.stjohns.edu/archives/vicug-l.html