Those are great, but I can't look at too many in succession. (Maybe a good rating system for optical illusions would be the number seizures induced per thousand

Those are great, but I can't look at too many in succession. (Maybe a good rating system for optical illusions would be the number seizures induced per thousand epileptics.) My favorite among the contest winners was absolutely stumped by the Monkey Business illusion: http://illusioncontest.neuralcorrelate.com/2010/the-monkey-business-illusion/ http://illusioncontest.neuralcorrelate.com/2010/the-monkey-b...