[BlogEntry] How I Met Your Mother : Prisoner's Dilemma

Was I hearing things Monday night, or did Robin actually tell Lilly not to "go all Prisoner's Dilemma on me" when she was about to confess something about Marshall's car? The line was delivered so quickly and quietly, with no reaction at all, that I'm left wondering if I just misheard it and the geeky part of my brain filled in the rest.

Prisoner's Dilemma, for those who've never heard of it, is something of a logic game where you have to figure out the optimal strategy for winning over time. The general idea is that two prisoners have been sentenced, and are offered a deal – if one of them betrays the other, then he goes free and the other one gets 10 years. If they both betray each other, they both get 2 years. But if they both stay silent, they both get 6 months. So it's a cooperation game. If they both go for the benefit that is best for them (potential freedom by turning the other guy in), then they both lose and end up with 2 years. But if they both stay silent, knowing that they could be on the hook for up to 10 years, they could end up winning and getting out with just 6 months.

Since the game is about betraying and not just about confessing, I'm not really sure that Robin's prisoner's dilemma reference was accurate. Anybody? Did I just imagine it?

Update: It was still on my Tivo, and yes that's absolutely what she said: "Don't you go all prisoner's dilemma on me." So hey, if one of the writers of this episode is out there trolling the blogs, I just want to say "Noticed it. Nice."