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URL:  https://boards.fool.com/the-only-way-this-is-not-true-is-if-monty-hall-30398680.aspx

Subject:  Re: 5 Statistics Problems To Change Your View Date:  11/25/2012  8:16 PM
Author:  JonathanRoth Number:  409579 of 567338

The only way this is not true is if Monty Hall knows which is the right door and you can game his psychology in which door he shows you. Otherwise, you are in a new game, 2 doors, equal odds.

Monty Hall knows which is the right door and will not open it. Because if he opens the door with the car the game is over. How do we know he knows? Because if he didn't know, then some of the time when he opened the door the car would be behind it. And since that doesn't happen, he knows.

Monty Hall not only knows, he opens the doors behind your back.
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