Here's an edited version of a puzzle from the book "Chuck Klosterman four" by Chuck Klosterman.
It is 1933. Somehow you find yourself in a position where you can effortlessly steal Adolf Hitler's wallet. The theft will not effect his rise to power, the nature of WW2, or the Holocaust. There is no important identification in the wallet, but the act will cost Hitler forty dollars and completely ruin his evening. You don't need the money. The odds that you will be caught committing the crime are negligible. Do you do it?
When should you punish someone for a crime they will commit in the future? Discuss.
Indeed, you could have any mapping from pairs of (probability distributions over) actions to box-states, where the first element of the pair is what you would do if you saw a filled box B, and the second element is what you would do if you saw an empty box B. But I'm trying to preserve the spirit of the original Newcomb.