with twelve black dots scattered throughout. But there’s no way you’ll see all the dots at once. The image above comes from a 2000 study on the Hermann grid published in the journal Perceptions.

Can you find the black dot in this grid illusion? Only very high IQ people could beat this grid illusion challenge. The scintillating grid illusion, a variation of the Hermann grid illusion ...

To be clear, there really are 12 black dots in the image ... If you look at the grid pattern closely, you might be able to see faint white squares where the gray lines meet.