Online research in philosophy

In this paper I consider Derek Parfit’s attempt to respond to Rawls’ charge that utilitarianism ignores the distinction between persons. I proceed by arguing that there is a moderate form of reductionism about persons, one stressing the importance of what Parfit calls psychological connectedness, which can hold in different degrees both within one person and between distinct persons. In terms of this form of reductionism, against which Parfit’s arguments are ineffective, it is possible to resuscitate the Rawlsian charge that the utilitarian maximizing approach to matters of distribution ignores something that is of moral relevance, viz., the difference between the degrees of connectedness that hold between different stages of the same person, and between that person and his nearest and dearest, and the lack of connectedness between that person and distant others who may be benefitted at his cost. To Parfit’s charge that reductionism sees the differences between persons as being ‘less deep’, I reply that the sense in which they are less deep is not at odds with their retaining their original moral importance, perhaps now better understood.

The publication of Derek Parfit's Reasons and Persons in 1984 revived and reshaped the debate on personal identity in Western philosophy. Not only does Parfit argue forcefully and ingeniously for a revisionary Reductionist theory of persons and their diachronic identity, but he also draws radical normative inferences from such a theory. Along the way he also mentions Indian Buddhist parallels to his own Reductionist theory. Some of these parallels are explored here, while particular attention is also paid to the supposed normative implications of Reductionism.

Parfit’s well known book, Reasons and Persons, argues, among other things, that ‘what matters’ in regard to ‘survival’ is not personal identity but something he calls ‘relation R.’ On this basis, plus other considerations, he rejects the ‘Self-interest’ theory as to what should be our aim in life. Here I show, or try to show, that his over-all argument is seriously defective. In particular, he fails to prove that personal identity is not what matters for survival.

Philosophers have long suggested that our attitude of special concern for the future is problematic for a reductionist view of personal identity, such as the one developed by Derek Parfit in Reasons and Persons. Specifically, it is often claimed that reductionism cannot provide justification for this attitude. In this paper, I argue that much of the debate in this arena involves a misconception of the connection between metaphysical theories of personal identity and our special concern. A proper understanding of this connection reveals that the above-mentioned objection to reductionism cannot get off the ground. Though the connection I propose is weaker than the connection typically presupposed, I nonetheless run up against a conclusion reached by Susan Wolf in “Self-Interest and Interest in Selves.” According to Wolf, metaphysical theses about the nature of personal identity have no significance for our attitude of special concern. By arguing against Wolf’s treatment of self-interest, I suggest that her arguments for this conclusion are misguided. This discussion leads to further clarification of the nature of the link between theories of personal identity and our special concern and, ultimately, to a better understanding of the rationality of this attitude.

Before being able to answer key practical questions dependent on a criterion of personal identity (e.g., am I justified in anticipating surviving the death of my body?), we must first determine which general approach to the issue of personal identity is more plausible, reductionism or non-reductionism. While reductionism has become the more dominant approach amongst philosophical theorists over the past thirty years, non-reductionism remains an approach that, for all these theorists have shown, could very well still be true. My aim in this paper is to show that non-reductionism is actually either irrelevant – with respect to the practical questions we want answered – or logically impossible. In arguing for this conclusion, I draw from a case Derek Parfit has employed – the Combined Spectrum – and I provide a number of variations to it which ultimately reveal that we have no possible rational recourse other than to become reductionists.