The Prisoner's Dilemma

I was wondering if you might give us an outline of the prisoner's dilemma, because I think this sort of applies to what happened between Greece and the Troika. The other academic point I want to ask you about before we move on to some more personal backgrounds is about game theory - that's the topic of your famous textbook. Should we go right here? And I think game theory will be familiar to a lot of our listeners, but for the benefit of people who aren't familiar, I was wondering ifyou might give usan outline of the prisoners' dilemma.