Our perception of how large or small things are in the world is systematically influenced for how we perceive distance or depth. This is most famously shown by the Ponzo Illusion (discovered by Mario ...

Optical illusions designed to challenge perception test perspective and depth cues.

Visual illusions that challenge depth perception show how perspective and angles mislead the eye.

This is an updated version of an article published on July 15. Hannah Hampton was not supposed to make it as a professional athlete. The doctors told her it would not be possible. That professional ...