Quote Originally Posted by mklotz View Post
Fascinating.

Given the conventional wisdom that the structure of the body was determined by natural selection, one has to wonder what our earliest ancestors were doing that so depended on such visual acuity that those that lacked it were "selected out", so that the genes governing it could survive until today.
The more one thinks about the conventional wisdom, the more holes get poked into it. Best not to think about in the first place. Theory's don't like to be questioned. They are only a question in the first place looking for validation.

The part about our being able to detect a single photon really is interesting.