By Mark English One of the most famous illustrations of the Dunning–Kruger effect dates back to 1995 in Pittsburgh where two men robbed a bank in broad daylight without wearing masks, sunglasses, fake mustaches or any form of disguise. Unsurprisingly, they were quickly identified on closed-circuit television and arrested. What stunned law enforcement — and later the academic community — was the explanation the suspects offered. They genuinely believed that by rubbing lemon juice on their faces, they would be invisible to security cameras. Their reasoning was that lemon juice …
