This optical illusion will blow your mind!

Ok, maybe it won't actually blow your mind, but it does make straight-moving balls seem wriggly, which is pretty awesome. If white circles on a black field are moved in straight lines and allowed to intersect, they (not surprisingly) appear to move in straight lines. However, if those lines are designed to avoid intersections, the balls appear to to wriggle instead. The scientists who discovered this don't know why it's true, but who cares -- it's wiggly! http://youtu.be/goPR7PI9-EA (A) Collision condition. All dots are moving in random directions in straight trajectories, and the dots are allowed to collide with each other on their paths. http://youtu.be/KfYh1mvC7bA (B) No-collision condition with wriggling motion trajectory illusion. All dots are moving in random directions in straight trajectories without colliding with each other.Wriggling motion trajectory illusion. "In this paper, we report on a novel visual motion illusion. When hundreds of dots move in straight trajectories ...