The Woman With the Highest IQ in the World: Marilyn vos Savant and the Phenomenon of Human Irrationality

A clever response to a seemingly simple question led to one of the biggest scientific controversies of the 1990s. Marilyn vos Savant, who holds the highest IQ in the world according to Guinness World Records (228), should have known exactly what she was talking about. But when she published her solution to a math puzzle, she was declared wrong by thousands—including many academics. Her story is not only about intellectual achievement but also a lesson on how even smart people can be fooled by their intuition.

From Childhood to Genius Status

Marilyn vos Savant was not an ordinary child from the start. At just ten years old, she could memorize entire pages of books and had read all 24 volumes of the Encyclopædia Britannica. These early signs of her extraordinary potential pointed to a life as an intellectual powerhouse. But her path to public recognition would be unusual.

Despite her unparalleled cognitive abilities, she initially attended only a regular public school. Later, she dropped out of the University of Washington to support her family. For a long time, she remained hidden from the world—not because of a lack of talent, but because societal structures and gender biases overshadowed her abilities. This changed dramatically in 1985 when Guinness World Records recognized her as having the highest IQ ever recorded—228 points—far higher than Einstein (160-190), Stephen Hawking (160), or Elon Musk (155).

The Monty Hall Paradox: A Mathematical Provocation

Suddenly in the public eye, Marilyn began a regular column in Parade magazine titled “Ask Marilyn” in 1989. An ideal platform for someone who loved answering complex questions—until September 1990, when a reader submitted a mysterious scenario.

The so-called Monty Hall problem is based on a game show scenario: Three closed doors are in front of you. Behind one is a car; behind the other two are goats. You choose a door—say door one. The host (Monty Hall, known from the show “Let’s Make a Deal”) then opens another door, definitely revealing a goat. The question now is: Should you switch to one of the remaining doors, or stick with your original choice?

Marilyn simply answered: “Yes, you should switch.” This answer sparked a storm. Over 10,000 letters flooded the magazine, about 1,000 of them from people with PhDs. The consensus was unanimous: Marilyn was completely wrong. The accusations ranged from rude to outright insulting: “You’re the goat!”, “You totally messed up!”—and there was always the suspicion that women understood math problems differently than men.

The Mathematical Solution: Probability Instead of Intuition

But Marilyn was right. Let’s look at the probabilities:

If you initially chose the door with the car (probability: 1/3), switching would make you lose. But if you initially chose a door with a goat (probability: 2/3), switching would make you win—because the host has already revealed the other goat. The statistical probability of winning by switching is therefore 2/3, not 1/2 as many intuitively assumed.

MIT conducted computer simulations to confirm this mathematical reality. The TV show MythBusters also performed practical tests, proving that Marilyn was entirely correct. Some skeptical scientists eventually admitted their mistakes and publicly apologized.

Why Do Millions Fall for This Mistake?

The psychological component of this puzzle is just as fascinating as the math. People tend to mentally “reset” a situation when new information is presented. After the host opens a door, many treat the remaining situation as if they just made their first decision: two doors, 50:50 chances.

Three additional factors play a role: First, the small sample size (only three doors) makes intuitive understanding difficult. Second, people overestimate the significance of their initial choice. Third, human intuition ignores the fundamental asymmetry of the problem—that the host does not reveal a door at random but intentionally reveals a goat.

Marilyn vos Savant’s story is a powerful reminder that even the highest IQ does not shield one from societal prejudices and that intelligence alone is not enough to overcome collective misconceptions. At the same time, it shows that rational thinking and mathematical accuracy will ultimately prevail—even if it takes tens of thousands of people to accept this truth.