You See the Apocalypse, I See a Profit Opportunity
| Peter Klein |
Game theorists often discuss finitely repeated games by asking, “What if both parties know the world ends in period T?” If the principle of backwards induction holds, then I suppose no Mayans have been able to achieve cooperation in a repeated prisoners’ dilemma game for thousands of years — both parties know the other will defect in T-1, so each defects in T-2, and so on. . . . But where beliefs about the end of the world differ, there are potential gains from trade.
See also this Hummer commercial, one of my favorites in explaining how time preference and discount rates affect behavior.