You are thrown into a very simple, yet extremely complicated situation: You and another person you play together and each one of you have two options: Red = Decline Green = Accept If both of you accept, both of you get 3 coins. If both of you decline, both of you get 1 coin. If one of you accepts and the other one declines, the declining one gets 5 coins and the accepting one 0 coins. Will you be nice or greedy? Let’s see which strategy turns out to be best for you!