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?

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

Spot the hidden chick among sheep in this optical illusion challenge. Test your observation skills by finding the chick in 7 ...

Straining blocks clarity. The harder we force things, the more we limit creativity, connection, and insight. Wu-wei is the ...