Optical illusions play tricks on your brain and can make you see things that aren't really there, from static images swirling around the page to images that stay with you even after you look away.

Jean-Paul Sartre, for instance, says that the moment we realize we are not immortal, we see the meaning of life as an illusion. This problem, what we may call the Big problem of the meaning of ...

A linguistic illusion is a phenomenon in which your judgment or understanding of a sentence or phrase conflicts with its actual meaning or structure. Like optical illusions, they reveal a little ...

This image is known as an optical illusion, meaning there could be other not-so obvious elements to be found. The challenge here is to spot the snake perfectly blended into this messy warehouse.

This image is known as an optical illusion, meaning there could be other less obvious elements to be found. The casino scene and the cards held in one player's hand, are clearly visible.