FAO EVIL: The Boxes Paradox

Wolff

New Metal Member
May 9, 2001
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You have entered a competition and won. The problem is that you have to chose your price from three boxes and two of the boxes contains nothing, while the third box contains something you really want.
The rules are quite simple; you have to chose one of the boxes. After you have chosen a box the host will open one of the remaining boxes and show that it contains nothing. Now he (or she) offers you the chance to change box.

2 questions:
What would you do and why?
What are your chances of winning?