Progress and conservation under Rawls's maximin principle

I argue the compatibility of progress with Rawls's maximin principle when applied to individual utility functions which are "nonaltruistic" in the sense that any transfer of consumption goods from old to young (resp. from young to old) lowers (resp. increases) old people's utility. The paper shows that necessary conditions for that compatibility are: (A) a bound on the feasible transfers from young to old, and B) a positive intergenerational stock externality. The analysis implies that the maximin principle has the drawback of making, under mild assumptions, conservation incompatible with progress.