A bored king wanted to find out which of his advisers was the wisest, so he summoned his three oldest wise men.
“I am going to sit you in a triangle and blindfold each one of you,” he said, “and paint either a red or a blue dot on your foreheads. I will then take the blindfolds off, and if you see at least one red dot, you will raise your hand. The first man to determine the color of his own dot is the wisest.”
The king then blindfolded them and painted a red dot on each man’s forehead. When the blindfolds were taken off, all three looked at each other and raised their hands.
Ten seconds later one of the wise men proclaimed, “I have a red dot.”