Abstract

Kevin Sauvé has recently argued in this journal that David Gauthier's conception of ‘morals by agreement’ is inimical to the development of long-term productive investment and sustainable levels of resource exploitation. According to Sauvé, this is because society is confronted with an intergenerational interaction problem whose strategic equilibrium is suboptimal. However, unlike the ‘contemporaneous Prisoner's Dilemma’ that Gauthier analyzes, the intergenerational version cannot be solved by an appeal to constrained maximization. As a result, Sauvé claims, Gauthier cannot effectively address the question of intergenerational justice.The portion of Sauvé's argument that concerns me is the following:Gauthier solves the contemporaneous Prisoner's Dilemma by ensuring that each person will cooperate only if all others cooperate, and indeed his conception of morality is aimed at ensuring that all individuals incur the costs as well as the benefits of social cooperation. But the contemporaneous solution cannot be applied to the Intergenerational Dilemma: if each generation will save for the next only if the previous generations have also saved, none will ever save.