Cross-posted from LessWrong. Suppose you regularly watch a popular TV show where contestants play a game just like Newcomb's Problem - before each contestant walks out on stage, the show's host sets out two boxes: box A containing nothing, and box B containing $1,000. Then, the host examines the contestant's profile in detail, and if she predicts they will walk away with only box A, she puts $1,000,000 in box A.