Newcomb's Paradox

 Rules:

• Two closed boxes, B1 and B2, are on a table.

• B1 always contains $1,000.

• B2 contains either nothing or $1 million --- you do not know which.

• You have an irrevocable choice between two actions:

A week before the test a superior Being made a prediction about what you will decide. You know that in the past the Being's predictions have been "almost certainly" correct. (You may think of the Being as God, as a superior intelligence from another planet, or a supercomputer capable of probing your brain and making highly accurate predictions.)

If the Being predicted you would choose both boxes, he has left B2 empty.

If the Being predicted you would choose only B2, he has put $1 million into B2.