Alan Carter; XIII*—Moral Theory and Global Population, Proceedings of the Aristotelian Society, Volume 99, Issue 1, 1 June 1999, Pages 289–314, https://doi.org/.

Though the revised edition of A Theory of Justice, published in 1999, is the definitive statement of Rawls's view, so much of the extensive literature on Rawls's theory refers to the first edition. This reissue makes the first edition once again available for scholars and serious students of Rawls's work.

It has been argued by some that the present non-existence of future persons entails that whatever obligations we have towards them are not based on rights which they have or might come to have. This view is refuted. It is argued that the present non-existence of future persons is no impediment to the attribution of rights to them. It is also argued that, even if the present non-existence of future persons were an impediment to the attribution of rights to them, (...) the rights they will have when they come into existence constitute a constraint on present actions. Both arguments build on a suggestion of Joel Feinberg's. Next, three arguments are considered which, while they do not highlight the non-existence issue, are related to it. The view that the causal dependence, of (some) future people on present policies, erodes or weakens the claim that rights considerations should constrain our present actions concerning them, is considered and rejected. The view that future people can only have rights to what is available at the time at which these people come into existence is considered and rejected. So too is the view that the attribution of rights to future people involves, in virtue of resource scarcity, an unacceptable arbitrariness. (shrink)

The paper considers the morality of nuclear energy development as it concerns future people, especially the creation of highly toxic nuclear wastes requiring long?term storage. On the basis of an example with many parallel moral features it is argued that the imposition of such costs and risks on the future is morally unacceptable. The paper goes on to examine in detail possible ways of escaping this conclusion, especially the escape route of denying that moral obligations of the appropriate type apply (...) to future people. The bulk of the paper comprises discussion of this philosophical issue, including many arguments against assigning obligations to the future drawn both from analyses of obligation and from features of the future such as uncertainty and indeterminacy. A further escape through appeal to moral conflict is also considered, and in particular two conflict arguments, the Poverty and Lights?going?out arguments are briefly discussed. Both these escape routes are rejected and it is concluded that if the same standards of behaviour are applied to the future as to the present, nuclear energy development is morally unacceptable. (shrink)

Robert Nozick (1938-2002) was Pellegrino University Professor at Harvard University. His early book in political theory, Anarchy, State, and Utopia, was very influential, and he followed it with Philosophical Explanations, The Examined Life, The Nature of Rationality, Socratic Puzzles, and Invariances: The Structure of the Objective World.

Ascertaining the optimum global population raises not just substantive moral problems but also philosophical ones, too. In particular, serious problems arise for utilitarianism. For example, should one attempt to bring about the greatest total happiness or the highest level of average happiness? This article argues that neither approach on its own provides a satisfactory answer, and nor do rights-based or Rawlsian approaches, either. Instead, what is required is a multidimensional approach to moral questions—one which recognises the plurality of our values. (...) Such an approach can be formalised by employing multidimensional indifference-curves. Moreover, whereas classical utilitarianism might be thought to enjoin us to bring about a larger global population, a multidimensional approach clearly suggests a significant reduction in human numbers. (shrink)

In A Theory of Justice, Rawls attempts to ground intergenerational justice by "virtual representation" through a thickening of the veil of ignorance. Contractors don't know to what generation they belong. This approach is flawed and will not result in the just savings principle Rawls hopes to justify. The project of grounding intergenerational duties on a social contractarian foundation is misconceived. Non-overlapping generations do not stand in relation to one another that is central to the contractarian approach.

Andrew Dobson has outlined three conceptions of environmental sustainability: the ‘critical natural capital’ conception; the ‘irreversibility’ conception; and the ‘natural value’ conception. He has also attempted to map out the various ‘dimensions of social justice’– his purpose in so doing being to analyze the ‘encounter’ of each conception of environmental sustainability with the points on his map. Not surprisingly, Dobson concludes that as one moves from the ‘critical natural capital’ conception through the ‘irreversibility’ conception to the ‘natural value’ conception of (...) ‘sustainability’, the ‘points of contact’ with his map of ‘the dimensions of social justice’ are found to ‘become fewer and further apart’. In this article I argue that Dobson is fundamentally confused in his reason for thinking why this is so. I also argue that a core argument he deploys concerning future generations cannot do the work he requires of it. (shrink)

How many people should there be? Can there be overpopulation: too many people living? I shall present a puzzling argument about these questions, show how this argument can be strengthened, then sketch a possible reply.