Our brain and eyes can play tricks on us—not least when it comes to the expanding hole illusion. A new computational model ...

Today’s optical illusion is challenging viewers to find a hidden "5" among a sea of "2s." The tricky pattern plays with human perception, making it hard to spot the odd number. Can you find it?

Are you self-confident or overanalytical? There will be two elements in the picture, and depending on the first thing that ...