This is not really about money tho...,(reply>), at the end mia says that they eventually got trust, thats not true, they cooperated in the last game because it was beneficial to all of them, there was really no trust at play there.,(reply>), like, its just a bunch of people trying to maximize a reward (money, points, fish, MEDALS, anything that people want would work just fine), the games are deliberately designed to create a conflict of interest and they cannot negotiate about what happens with the reward after the game, so it forces the players to be short-sighted (if you let the people negotiate about what happens with the money at the end, the whole game would have just been like round 1). It is tho a great game about trust and conflict of interest... (oh, and you don't let people physically prove stuff)