Optical Illusions

If these two pictures don't blow your mind, your mind is a lot more durable than mine.



I had a hard time coming to terms with the fact that that is not animated. But, it's really not. There are a ton more like this here.



I feel like the universe is going to come apart when I look at this one, because the squares marked A and B are the same shade of gray. Don't believe me? Three proofs: 1) Here. 2) Or, save it, open it in MS Paint, cut out sections of A and B and look at them seperate from the board. 3) Open it in MS Paint, use the Pick Color tool to pick color first from A, than B, checking the color attributes in Colors --> Edit Colors --> Define Custom Colors each time.