What is the Monty Hall Problem and how does it work?

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In summary, there is a famous scene in the movie where the professor asks Ben a question and he goes into analysis. Ben's answer seems to defy logic, as he says that if he changed his decision, he would have a higher chance of getting the right choice. This is known as the Monty Hall Problem, and it has sparked much discussion and debate. For a better understanding, you can read about it on Wikipedia or visit a recent forum thread on the topic.
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jaredmt
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im just curious. it has been bugging me about the beginning of the movie where the professor asks Ben a question and he goes into analysis. it didnt make sense to me

he said that if u had to pick from 3 choices u have a 1/3 chance. but then they take away 1 of the incorrect choices. so the professor asks "would you change your decision?" and Ben said "yes" because if he does, he would have a 2/3 chance of getting the right choice. it seems to me like it would be a 50/50 chance regardless of which choice he picked. or maybe i didnt hear the explanation correctly i don't know, can any1 explain this to me?

maybe i should watch that scene again cus that logic doesn't make sense to me at all, i must have heard it wrong
 
Physics news on Phys.org

1. What is the movie "21" about?

The movie "21" is about a group of MIT students who use their mathematical skills to count cards in order to win millions of dollars in Las Vegas. However, their success soon catches the attention of the casino owners and they must outsmart the security systems to avoid getting caught.

2. Is "21" based on a true story?

Yes, "21" is based on the true story of the MIT Blackjack Team, a group of students and graduates who used card counting techniques to win large sums of money at casinos in the 1980s and 1990s.

3. Who stars in the movie "21"?

The main cast of "21" includes Jim Sturgess, Kevin Spacey, Kate Bosworth, and Laurence Fishburne. Other notable actors in the movie include Aaron Yoo, Liza Lapira, and Josh Gad.

4. What is the significance of the number 21 in the movie?

In the game of blackjack, the goal is to get a hand with a value of 21 or as close to it as possible without going over. The movie's title "21" alludes to this number and the main characters' success in counting cards and winning at the game.

5. Is "21" a good representation of the real events?

While the basic premise and some characters in "21" are based on real events, the movie takes creative liberties and changes certain details. Overall, the movie is a dramatized version of the true story and may not accurately depict all of the events that took place.

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