The crazy thing about this game is how illogical it is to stop contributing just because someone in the group is free riding. If everyone else is still being a good citizen of the game, everyone will still win. The old emotional brain kicks in, however, when you see cheating. It’s an innate response that served your ancestors well. You know deep down that cheaters must be punished because it takes only one cheater to make the economy sputter out. You would rather lose the game than help someone who isn’t helping you.
