If you and EY think that the PD players don’t like to rat on their friends, all you are saying is that those standard PD payoffs aren’t the ones that match the players’ real utility functions, because the real functions would include a hefty penalty for being a rat.
My point was that I previously agreed with EY that the payoff matrix doesn’t accurately represent how people would perceive the situation if they were in a LPDS, but that I now think that people’s reaction to it could just as well be explained by assuming that they accept the canonical payoff matrix as accurate, but pursue those utilities under a constrained decision theory. And also, that their intuitions are due to that decision theory, not necessarily from valuing the outcomes differently.
Ok, I think I see the distinction. I recognize that it is tempting to postulate a 2 part decision theory because it seems that we have two different kinds of considerations to deal with. It seems we just can’t compare ethical motivations like loyalty with selfish motivations like getting a light sentence. “It is like comparing apples and oranges!”, screams our intuition.
However my intuition has a piece screaming even louder, “It is one decision, you idiot! Of course you have to bring all of the various kinds of considerations together to make the decision. Shut up and calculate—then decide.”
Also, I should clarify another point:
My point was that I previously agreed with EY that the payoff matrix doesn’t accurately represent how people would perceive the situation if they were in a LPDS, but that I now think that people’s reaction to it could just as well be explained by assuming that they accept the canonical payoff matrix as accurate, but pursue those utilities under a constrained decision theory. And also, that their intuitions are due to that decision theory, not necessarily from valuing the outcomes differently.
Ok, I think I see the distinction. I recognize that it is tempting to postulate a 2 part decision theory because it seems that we have two different kinds of considerations to deal with. It seems we just can’t compare ethical motivations like loyalty with selfish motivations like getting a light sentence. “It is like comparing apples and oranges!”, screams our intuition.
However my intuition has a piece screaming even louder, “It is one decision, you idiot! Of course you have to bring all of the various kinds of considerations together to make the decision. Shut up and calculate—then decide.”