The Checkershadow Illusion is one of the coolest illusions that I’ve seen.
The point is that A and B are the same shade.
Brian Weatherson, one of the philosophy professors here, is preparing for PHIL 101 and has a powerpoint presentation on the illusion. It’s worth downloading from his blog post on the subject.
– Sydney
Alan Schmierer
If you squint they actually do look the same.
Hmm … doesn’t do it for me.
– Sydney