Discusses one principle that has been suggested as a guide to the way we ought to take account of the interests of future generations, namely the principle of intergenerational ‘equity’ and its related claim of intergenerational equality, particularly in spheres such as the way we should share out ‘finite’ resources among generations. This chapter examines the possible arguments in favour of intergenerational egalitarianism and concludes that they are difficult to defend. It is proposed that egalitarianism should be replaced by the principle of ‘threshold prioritarianism’, so that our moral obligation to future generations should be based on a humanitarian concern to avoid policies that may impoverish them.
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