October 10th, 2007

hat

Was obsessing over this illusion yesterday...

Check it out. It took me FOREVER to see it going counter-clockwise. At first I refused to even believe it was possible. Key is to squint or just focus on her foot, see that going the other way, then the rest pops into place. What's weird is how final the rotation looks once your brain decides on a direction. Not like those illusions (Necker cube etc.) where it's constantly popping back & forth even as you look at it.

Your brain is constantly running a program that converts a two dimensional array of light/color data into a three dimensional representation of the world. Optical illusions are essentially hacks that exploit bugs in the program.