And so, in near perfect equilibrium, we are back to that magic number.

The director never lost hold of the narrative thread, however, and kept the comic and serious aspects in perfect equilibrium.

In the unique subgame perfect equilibrium, each player chooses to defect at every opportunity.

The main result gives conditions under which the game has a unique subgame perfect equilibrium and characterizes this equilibrium.

In contrast, for a certain two-player voting game no extensive-form trembling hand perfect equilibrium describes admissible behavior for both players.