Unbelievable illusion 1

One part of this image is gray and the other one is white. One is darker than the other. They obviously are two blocks with two different colors… WRONG!

In this unbelievable illusion, the two blocks have the exact SAME color. They are actually the same shade of grey.

Just slip your finger over the join!

Unbelievable illusion 2

Unbelievable illusion 3

Illusion by David Smith and Kottke

via Dailymail