Simon Beck

The view that an account of personal identity can be provided in terms of psychological continuity has come under fire from an interesting new angle in recent years. Critics from a variety of rival positions have argued that it cannot adequately explain what makes psychological states co-personal (i.e. the states of a single person). The suggestion is that there will inevitably be examples of states that it wrongly ascribes using only the causal connections available to it. In this paper, I describe three distinct attacks on the psychological continuity theory along these lines. While I acknowledge that a number of interesting issues arise, I argue that the theory can withstand all three attacks.

Martha Nussbaum has argued in support of the view (supposedly that of Aristotle) that we can, through thought-experiments involving personal identity, find an objective foundation for moral thought without having to appeal to any authority independent of morality. I compare the thought-experiment from Plato’s Philebus that she presents as an example to other thought-experiments involving identity in the literature and argue that this reveals a tension between the sources of authority which Nussbaum invokes for her thought-experiment. I also argue that each of her sources of authority presents further difficulties for her project. Finally, I argue that it is not clear that her thought-experiment is one that actually involves identity in any crucial way. As a result, the case she offers does not offer any satisfactory support for her view on the relation between identity, morality and thought-experiments, but we do gain some insights into what that relation really is along the way.

The aim of this paper is to re-evaluate the manner in which the Ticking Bomb Scenario (TBS), a thought experiment in philosophical enquiry, has been used in the discussion of the justifiability or otherwise of forward-looking interrogational torture (FLIT). The paper argues that criticisms commonly raised against the thought experiment are often inappropriate or irrelevant. A great many criticisms misunderstand the way in which thought experiments in general, and the TBS in particular, are supposed to work in philosophical (and for that matter scientific) inquiry. The paper is not about the acceptability or otherwise of FLIT per se but rather an attempt to show that thought experiments such as the TBS are useful analytic tools and ought not to be rejected due to their inappropriate use by those engaged in the justifiability or otherwise of FLIT. By rescuing the TBS from its erroneous use the paper seeks to show its proper worth as part of an argumentative device in uncovering conflicting moral intuitions in our search for ethical truths.