> -----Original Message-----
> From: Louis Newstrom [mailto:nnewstro@bellsouth.net]
> Sent: Monday, 20 August 2001 1:16
> To: extropians@extropy.org
> Subject: Re: FWD (SK) Re: The night side of science
>
>
> From: "Mike Lorrey" <mlorrey@datamann.com>
> > What we don't know is whether Newton was or was not one of
> those rare
> > people with four types of color cones in their retinas. If
> he was, this
> > could explain the seven color statement.
>
> Probably not. People who can detect four colors (called
> "tetrachromates")
> see two shades of what we would call "green" (near the middle of the
> spectrum).
>
Also, all tetrachromats are female, AFAIK.
Emlyn
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This archive was generated by hypermail 2b30 : Fri Oct 12 2001 - 14:40:11 MDT