‘Puzzles and paradoxes’ discredits many of the fallacies which have developed in game theory. One of the most popular devices is the Prisoner's Dilemma. Many fallacies exist in people's understanding of this game, such as the categorical imperative, the fallacy of the twins, the wasted vote myth, and the transparent disposition fallacy. Other paradoxes in wider game theory exist, such as Newcomb's paradox, which makes it optimal to play strongly dominated strategies, and the surprise test paradox, which arises from people failing to ask the correct questions of a situation. People often think conventions need to be dispensed by another party, when they are actually established by cultural evolution.