In my personal life, I've learned the hard way that when people seem to be acting irrational with regard to an iterated game, before ascribing irrationality to

In my personal life, I've learned the hard way that when people seem to be acting irrational with regard to an iterated game, before ascribing irrationality to them it can be very helpful to examine if they're short timers, acting rationally with regard to a game that won't be iterated.