Piers Rawling

Rationality has long been a central topic in philosophy, crossing standard divisions and categories. It continues to attract much attention in published research and teaching by philosophers as well as scholars in other disciplines, including economics, psychology, and law. The Oxford Handbook of Rationality is an indispensable reference to the current state of play in this vital and interdisciplinary area of study. Twenty-two newly commissioned chapters by a roster of distinguished philosophers provide an overview of the prominent views on rationality, with each author also developing a unique and distinctive argument.

According to Newton, the goals of natural philosophy comprise quantitative generalizations and causal knowledge, the latter being paramount. Quantitative generalizations are sometimes explanatory, in psychology as elsewhere . However, in psychology, they are not explanatory when the human subject is considered qua bearer of psychological states , but only when she is considered qua physical system. In the former case quantitative generalizations are, rather, to be causally explained. In this sense, psychology may be closer to the Newtonian methodological mark than contemporary physics

Scanlon suggests a buck-passing account of goodness. To say that something is good is not to give a reason to, say, favour it; rather it is to say that there are such reasons. When it comes to wrongness, however, Scanlon rejects a buck-passing account: to say that j ing is wrong is, on his view, to give a sufficient moral reason not to j. Philip Stratton-Lake 2003 argues that Scanlon can evade a redundancy objection against his (Scanlon’s) view of wrongness by adopting a buck-passing account of wrongness. We argue that this manoeuvre does not succeed. Scanlon’s notion of wrongness rests on the idea of a reasonably rejectable principle. As Stratton-Lake points out, Scanlon offers two accounts, one in terms of permission, the other in terms of proscription. The permission account is tricky to formulate. Scanlon’s account (quoted in Stratton-Lake 2003: 71) might suggest any of the following four formulations (where the principles in question are principles ‘governing how one may act’ (Scanlon..

The context-free weak ordering principle is viewed by many as a cornerstone of rational choice theory. McClennen, for example, claims that this principle is one of a pair on which '[t]he theory of rational choice and preference, as it has been developed in the past few decades by economists and decision theorists, rests', and Sen characterizes a version of context freedom as ‘a very basic requirement of rational choice’. But this principle is certainly not uncontroversial: there are examples of principle is certainly not apper irrational

significant role for accomplishment thereby admits a ‘Trojan Horse’ (267).1 To abandon hedonism in favour of a conception of well-being that incorporates achievement is to take the first step down a slippery slope toward the collapse of the other two pillars of utilitarian morality: welfarism and consequentialism. We shall argue that Crisp’s arguments do not support these conclusions. We begin with welfarism. Crisp defines it thus: ‘Well-being is the only value. Everything good must be good for some being or beings’ (264). The first part of this definition is potentially misleading, since it makes it sound as if welfarism adopts a monistic account of value, in which well-being is the only good thing. But well-being, as Crisp notes, when discussing hedonism, is best understood as consisting in a balance of good things over bad in one’s life. So understood, welfarism is silent on the issue of what things are good; it places a structural restriction on what kinds of things can be good: they must be things that are good for beings. It is a separate task to supply the content to fit this structure by determining what things are good, and welfarists differ in their answers: hedonists traditionally assert that pleasure alone is good; others add further items such as knowledge and virtue. Why is the thought that a person’s well-being depends importantly on what they accomplish a threat to welfarism? An accomplishment is judged both by its outcome or product and by the manner of the performance itself. But an activity or outcome is only an achievement if it is worthwhile, and whether it is worthwhile will depend on whether it exhibits what Crisp asserts to be ‘non-welfarist values’ (266), such as beauty, grace, importance, or style - excellences which welfarism, in Crisp’s view, cannot accommodate because they cannot be ‘cashed out in welfarist terms’, or ‘reduced to the value of well-being’ (266). Here Crisp rests his case, but it is worth trying to get clearer about the difficulties in order to see if the welfarist can meet them..

The two envelopes problem has generated a significant number of publications (I have benefitted from reading many of them, only some of which I cite; see the epilogue for a historical note). Part of my purpose here is to provide a review of previous results (with somewhat simpler demonstrations). In addition, I hope to clear up what I see as some misconceptions concerning the problem. Within a countably additive probability framework, the problem illustrates a breakdown of dominance with respect to infinite partitions in circumstances of infinite expected utility. Within a probability framework that is only finitely additive, there are failures of dominance with respect to infinite partitions in circumstances of bounded utility with finitely many consequences (see the epilogue)

Integration and coherence are central values in human existence. It would be a serious objection to any proposed way of life that it led to us being alienated or cut off from others or from some importan part of ourselves. Morality, with the strenuous demands it makes on us, is one area in which alienation is both particularly threatening and peculiarly undesirable. If morality cuts us off from some important part of ourselves then it appears unattractive, and if it cuts us off from others then it seems self-defeating. While there are few philosophers who take the radical view that morality is, by its very nature, an alienating force, a more common complaint has been that some particular moral theories should be rejected because the picture of moral thought which they offer inevitably leads to the alienation of moral agents. The main target of criticism has been consequentialism, but some deontological theories, especially Kantianism, have also come under attack

This paper comprises three sections. First, we offer a traditional defence of deontology, in the manner of, for example, W.D. Ross (1965). The leading idea of such a defence is that the right is independent of the good. Second, we modify the now standard account of the distinction, in terms of the agent-relative/agentneutral divide, between deontology and consequentialism. (This modification is necessary if indirect consequentialism is to count as a form of consequentialism.) Third, we challenge a value-based defence of deontology proposed by Quinn (1993), Kamm (1989, 1992), and Nagel (1995)

There is a substantial literature on the Bayesian approach, and the application of Bayes'' theorem, to legal matters. However, I have found no discussion that explores fully the issue of how a Bayesian juror might be led from an initial "presumption of innocence" to the judgment (required for conviction in criminal cases) that the suspect is "guilty beyond a reasonable doubt". I shall argue here that a Bayesian juror, if she acts in accord with what the law prescribes, will virtually never reach such a judgment. In section I, I discuss Bayesianism, Bayes'' rule and the relation between them. Section II addresses the two legal notions key to my worries about Bayesian jurors: the presumption of innocence and the reasonable doubt criterion. Section III explores what a Bayesian is to make of these notions, and how the legal system requires her to reason in their light. If I am right, there emerges a conflict between current legal prescriptions and the Bayesian approach. Section IV explores the import of this conflict and how it might be resolved.