The new illusion looks simple, showing intersecting grey lines on a white background. But looking closely starts it moving – and though there are actually 12 black dots in it, it’s only ...

And with this regular pattern of gray lines on a white background, the brain guesses that there’ll just be more of the same, missing the intermittent black dots. Those dots disappear and ...

featuring gray crisscrosses on a white background, 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 ...

So when we stare at a black dot surrounded by a pattern of gray lines against a white background, our mind assumes what the intersection of the gray lines will look like without adding a black dot ...