You stand before three doors. Behind one of them lies the grand prize: that which you most desire in the world. Behind the other two there's only worthless junk to be found. After you choose your preferred door, the game master opens one of the two other doors, revealing nothing but junk. Now, he offers you the ability to either stick to your initial choice or switch to the other remaining door. Once you make your decision, the game master will open that door and whatever is found behind it will be yours. Would it be wise to switch your initial choice?

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