Abstract

One of the most commonly observed peculiarities of the instrumental conception of rationality is that when applied in contexts of social interaction it sometimes prescribes actions that will predictably result in suboptimal outcomes. Often these outcomes could be avoided if agents were able to credibly commit themselves to refraining from exercising certain options available to them. The prisoners’ dilemma is the classic example. This problem has generated a small growth industry of attempts to modify the instrumental model in order to incorporate commitments. The reason that philosophers are so attracted to this project is that it seems to offer them an opportunity to finish off the job that Socrates began, viz. to refute moral skepticism of the ‘rational egoist’ variety.1 None of this has worked very well, but enthusiasm for the project appears to continue unabated.