>        >About 4kx4k pixels 
>        >springs to mind ...
>That would mean we could distinguish between 16 million objects without 
>moving our eye at all! 
I commented:
>estimate of the retina's total receptivity as being about a million pixels.
Anders spoke of 2 million axons from the retina.
It seems we were all understating the case.  According to Richard Dawkins,
in MOUNT IMPROBABLE, 
`the human retina has about 166 million photocells' (p. 160).
Why am I bothering to post this `We Were Wrong'?  Like, who really cares?
I dunno, just habit I guess.
Oh, and about that cherry tree--
Damien Broderick