Katerina Deligiorgi

© 2013 The Editors of The Philosophical QuarterlyThe aim of this book, set out in the first chapter, is to offer an account of rational action that can accommodate both a model of rationality that is performance‐based and one that is agent‐based. On the former model, rationality is measured in terms of successful performance and amounts to fitness of the performance to the task at hand, so the performance is rational if it does the job it was supposed to do; on the latter, it is a feature of the deliberative processes that determine the choice of the action by the agent, so the action is rational if it is ‘the outcome of considered deliberation’. The proposed reconciliation is effected through the notion of expert opinion, which is authoritative because it is expert, and is accepted because it is authoritative. Fisch and Benbaji seek to show that...