Well that is the point I was making, but when I see how badly my mind has to misinterpret color in order to make sense of an image, I begin to doubt whether anything I see is valid or not. Bob On Jul 1, 2011, at 11:27 AM, Nonsanity wrote: > Go with the math. You can't trust your eyes. > > http://boingboing.net/2008/02/08/color-tile-optical-i.html