How the woman with the world’s highest IQ silenced her critics with the Monty Hall Problem
Marilyn vos Savant took on 10,000 angry letters to prove her controversial answer.

Door 1, 2, or 3? Choose carefully, there's a Pontiac Tempest on the line.
A recent thread on X by @iamluismalheiro has reignited interest in a fascinating problem. In his thread, Luis recounts the 1990 controversy sparked by Marilyn vos Savant, who famously tackled the puzzle in her “Ask Marilyn” column. Before we get to the controversy, let's play the game. Ready? There are three doors. Behind one is a car—a gleaming, shiny, make-your-friends-jealous car. The other two? Goats. What happens to the goats if you win is anyone’s guess, but let’s stay focused.
Pick a door. 1, 2, or 3. Got one? Great. Let’s say you picked door 1. Now, the host opens door 3 to reveal…a goat. Now comes the big moment. The host gives you a choice: stick with your original pick, or switch to door 2? What do you do?
If you switched, congrats—you just won a brand new 1965 Pontiac Tempest! If you didn’t, well…enjoy your new goat.
But why? Why does switching lead to victory twice as often as staying with the original door?
The puzzle that stumped millions
This is the Monty Hall Problem, named after the host of the classic game show Let’s Make a Deal. It’s simple enough to explain, but the math behind it has baffled people for decades. Even PhDs and mathematicians have gotten it wrong.
The question boils down to this: When Monty opens the door to reveal a goat, does switching increase your odds of winning the car? The answer is yes—switching doubles your chances of winning.
Marilyn’s bold answer—and the backlash
In 1990, Marilyn vos Savant, recognized for having one of the highest recorded IQs, confidently declared, “Yes, you should switch.” Her answer was based on solid math, but it provoked a storm of criticism. She received over 10,000 letters, including nearly 1,000 from PhDs. Many accused her of misunderstanding the problem or even being incapable of basic logic. Others resorted to personal attacks:
"You are the goat!"
— Anonymous critic
Some critiques veered into outright sexism:
"Maybe women look at math problems differently than men."
— Anonymous critic
But Marilyn stood her ground, unwavering in her confidence. Over time, her answer was proven right by computer simulations run by MIT, as well as by experiments conducted by MythBusters. Eventually, many academics who had criticized her publicly apologized for their errors, acknowledging her insight and logic. The ordeal transformed Marilyn into a symbol of intellectual resilience, and her calm persistence in the face of hostility continues to inspire people today.
Marilyn’s lasting legacy
Marilyn often reflected on her experience, noting how the backlash revealed deeper issues with how we approach learning and problem-solving. She attributed much of the confusion—and the vitriol—to flaws in the education system. “Our schools teach us to memorize answers, not to question them,” she argued, advocating for an approach to education that encourages independent thinking.
Despite the loneliness that sometimes accompanied her intellect, Marilyn saw her gift as a blessing. “It’s not easy being this smart,” she admitted, but she never shied away from using her platform to challenge conventional thinking. Her Monty Hall response remains one of the most famous examples of sticking to the truth in the face of overwhelming opposition.
Today, her story is a reminder that being right doesn’t always mean being popular—but it’s worth standing firm. As Luis Malheiro’s viral thread shows, the Monty Hall Problem continues to fascinate people, thanks in no small part to Marilyn’s courage and conviction.
Here’s the math
Let’s break it down. When you first choose a door, you have a 1/3 chance of picking the car and a 2/3 chance of picking a goat. If you’ve picked a goat (which happens 2/3 of the time), switching after the host reveals another goat guarantees the car.
It's a numbers game backed up by MIT supercomputers and the Mythbusters alike:
- Pick the car (1/3 chance): Switching loses.
- Pick a goat (2/3 chance): Switching wins.
So, by switching, you win 2/3 of the time.
"Switching wins 2/3 of the time."
— Luis Malheiro
Why is it so hard to grasp?
The Monty Hall Problem messes with our intuition. Most people reset the odds after the host reveals a goat, assuming it’s now a 50/50 choice between the remaining doors. But the math doesn’t work that way—the odds of your initial pick being correct stay at 1/3.
In her defense of the solution, Marilyn criticized the education system for fostering passive learners who lack the tools to think critically. It’s a critique that feels just as relevant today.
The thread blowing up on X
Luis Malheiro’s thread has reignited the debate, drawing millions of views and sparking conversations about math, intuition, and education. Many users shared their disbelief at the backlash Marilyn endured, while others admitted they’d initially gotten the problem wrong themselves.
"It’s not easy being this smart."
— Marilyn vos Savant
Why it matters
The Monty Hall Problem isn’t just a fun game show puzzle—it’s a reminder of the importance of critical thinking and the courage to stand by the truth, even when it’s unpopular. Threads like Luis’s help bring these lessons to a new audience.
So, the next time you’re faced with a tough choice, consider the Monty Hall Problem. Sometimes, the smartest move is to switch.
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An Irish woman went to the doctor for a routine eye exam. She left with bright neon green eyes.
It's not easy seeing green.
Did she get superpowers?
Going to the eye doctor can be a hassle and a pain. It's not just the routine issues and inconveniences that come along when making a doctor appointment, but sometimes the various devices being used to check your eyes' health feel invasive and uncomfortable. But at least at the end of the appointment, most of us don't look like we're turning into The Incredible Hulk. That wasn't the case for one Irish woman.
Photographer Margerita B. Wargola was just going in for a routine eye exam at the hospital but ended up leaving with her eyes a shocking, bright neon green.
At the doctor's office, the nurse practitioner was prepping Wargola for a test with a machine that Wargola had experienced before. Before the test started, Wargola presumed the nurse had dropped some saline into her eyes, as they were feeling dry. After she blinked, everything went yellow.
Wargola and the nurse initially panicked. Neither knew what was going on as Wargola suddenly had yellow vision and radioactive-looking green eyes. After the initial shock, both realized the issue: the nurse forgot to ask Wargola to remove her contact lenses before putting contrast drops in her eyes for the exam. Wargola and the nurse quickly removed the lenses from her eyes and washed them thoroughly with saline. Fortunately, Wargola's eyes were unharmed. Unfortunately, her contacts were permanently stained and she didn't bring a spare pair.
- YouTube youtube.com
Since she has poor vision, Wargola was forced to drive herself home after the eye exam wearing the neon-green contact lenses that make her look like a member of the Green Lantern Corps. She couldn't help but laugh at her predicament and recorded a video explaining it all on social media. Since then, her video has sparked a couple Reddit threads and collected a bunch of comments on Instagram:
“But the REAL question is: do you now have X-Ray vision?”
“You can just say you're a superhero.”
“I would make a few stops on the way home just to freak some people out!”
“I would have lived it up! Grab a coffee, do grocery shopping, walk around a shopping center.”
“This one would pair well with that girl who ate something with turmeric with her invisalign on and walked around Paris smiling at people with seemingly BRIGHT YELLOW TEETH.”
“I would save those for fancy special occasions! WOW!”
“Every time I'd stop I'd turn slowly and stare at the person in the car next to me.”
“Keep them. Tell people what to do. They’ll do your bidding.”
In a follow-up Instagram video, Wargola showed her followers that she was safe at home with normal eyes, showing that the damaged contact lenses were so stained that they turned the saline solution in her contacts case into a bright Gatorade yellow. She wasn't mad at the nurse and, in fact, plans on keeping the lenses to wear on St. Patrick's Day or some other special occasion.
While no harm was done and a good laugh was had, it's still best for doctors, nurses, and patients alike to double-check and ask or tell if contact lenses are being worn before each eye test. If not, there might be more than ultra-green eyes to worry about.