http://www.patmedia.net/marklevinson/cool/cool_illusion.html
from The LangaList Standard Edition 2006-05-18
A Free Email Newsletter from Fred Langa
That Helps You Get More From Your Hardware,
Software, and Time Online
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Hello, Fred! Just thought I'd send the link below to you for the Just for Grins section of the newsletter. It's an example of just how most of our brains work. We start out seeing one thing but, upon further inspection, we wind up seeing another. The page is suitable for all ages in all countries of the world. —Bob de Violini
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Sigh, now we can't depend upon what we see because of … evolution?
Reinke Faces Life 