An Optical Illusion...How Many Dots Do You See?

There are supposed to be 12 black dots in the image below. The trouble is, it is impossible to see them all at once. I find stuff like this fascinating. Reality escapes us. Maybe we are all living in a Matrix in the mind of God and none of us are here at all. That might be a considerable leap from not being able to see all the dots, but it is an indication that it's possible to conceal the truth that is, after all, in plain sight. Take a look.

 Don't be tricked.