Alan Carter

Michael Tooley defends infanticide by analysing ‘A has a right to X’ as roughly synonymous with ‘If A desires X, then others are under a prima facie obligation to refrain from actions that would deprive him [or her] of it.’ An infant who cannot conceive of himself or herself as a continuing subject of experiences cannot desire to continue existing. Hence, on Tooley’s analysis, killing the infant is not impermissible, for it does not go against any of the infant’s desires. However, Tooley’s argument in support of his analysis seems to justify, instead, a slightly more subtle analysis—namely, ‘A has a right to X’ is roughly extensionally equivalent with ‘Unless A expresses his or her desire that not‐X, then others are under a prima facie obligation to refrain from actions that would deprive him or her of X.’ But given this analysis, the infant’s purported lack of any capacity to conceive of himself or herself as a continuing subject of experiences implies that we cannot be released from any duty that we might have not to harm him or her. In short, Tooley’s argument in support of his analysis actually implies that infanticide may well be impermissible.

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.

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.

Three interlocking features appear to underpin Rawls’s justification of political compliance within the context of political liberalism: namely, a specific territory; a specific society; and a specific conception of what it is to be reasonable. When any one feature is subject to critical examination, while presupposing that the other two are acceptable, Rawls’s argument for political compliance may seem persuasive. But when all three features are critically examined together, his justification of political compliance within political liberalism can be seen to lack cogency. Thus, political compliance fails to be justified by a free-standing political liberalism. Key Words: philosophical anarchism • political duties • political liberalism • political obligation • Rawls.

There has been a process of moral extensionism within environmental ethics from anthropocentrism, through zoocentrism, to ecocentrism. This article maps key elements of that process, and concludes that each of these ethical positions fails as a fully adequate, environmentalist ethic, and does so because of an implicit assumption that is common within normative theory. This notwithstanding, each position may well contribute a value. The problem that then arises is how to trade off those values against each other when they conflict. The solution here proposed is to employ multidimensional isovalue-contours along with a multidimensional practicability-frontier. This would result in a rich, value-pluralist environmentalist ethic that enjoined different outcomes to those enjoined by purely anthropocentric, zoocentric or ecocentric ethics.