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. Scientists from the Laboratory of ...

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

Twelve black dots dance about this grid. They never actually move or vanish, but no matter how fast you twitch your eyes back and forth, you can’t seem to trap them all in your gaze at once.