If you haven’t heard of it, the Thatcher effect is a phenomenon where facial distortions are difficult to perceive when a face is upside-down. It affects most humans and it’s even been studied in monkeys. It’s VERY trippy. I’ve gone ahead and PhotoShopped the faces of 12 celebrities. Each distorted face is side-by-side with the original photo, and they’re each upside-down. You’ll have to pick which photo is distorted. Afterwards, you’ll get to see each photo right-side up, and the difference is astounding. Good luck!
