There was some discussion a short time ago about this particular round of a game show called "Golden Balls". The particular round they're playing here is called "Split or Steal", known in philosophy or game theory circles as "The Prisoner's Dilemma". The host will explain everything. You should watch it first.
Now, all the discussion I've seen so far talks about how brilliant this strategy is, or the exact reasoning behind why it works. My question, however, is this: given that we've been talking about this problem for such a long time, why has nobody ever figured this out before? Given how well it works, this should be the answer in the back of the textbook about this problem.
Mokalus of Borg
PS - The first trouble might be that the traditional Prisoner's Dilemma involves being unable to communicate.
PPS - And this strategy has communication as a vital component.