Marilyn vos Savant, who was briefly listed in the Guinness Book of World Records as having the highest I.Q. on record, has a column in Parade magazine in which she answers readers’ questions.
In September 1990, Marilyn vos Savant devoted one of her columns to a reader’s question, which presented a variation of the Monty Hall Problem:
“Suppose you’re on a game show, and you’re given the choice of three doors. Behind one door is a car, behind the others, goats. You pick a door, say #1, and the host, who knows what’s behind the doors, opens another door, say #3, which has a goat. He says to you, “Do you want to pick door #2?” Is it to your advantage to switch your choice of doors?”
“Yes; you should switch,” she replied. “The first door has a 1/3 chance of winning, but the second door has a 2/3 chance.”
via pricenomics.
She received thousands of answers, almost all much like this one.
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