This is a paperback edition of a major contribution to the field, first published in hard covers in 1977. The book outlines a general theory of rational behaviour consisting of individual decision theory, ethics, and game theory as its main branches. Decision theory deals with a rational pursuit of individual utility; ethics with a rational pursuit of the common interests of society; and game theory with an interaction of two or more rational individuals, each pursuing his own interests in a (...) rational manner. (shrink)

Despite being co-opted by economists and politicians for their own purposes, ‘welfare’ traditionally refers to well-being, and it is in this sense that L. W. Sumner understands the term. His book is a clear, careful, and well-crafted investigation into major theories of welfare, accompanied by a one-chapter defense of “welfarism,” the view that welfare is the only foundational value necessary for ethics. Sumner himself is attracted to utilitarianism, but he makes no commitment to it in this work, which will be (...) of interest to many moral philosophers. (shrink)

The essays in this volume, first published in 1986, examine the philosophical foundations of social choice theory. This field, a modern and sophisticated outgrowth of welfare economics, is best known for a series of impossibility theorems, of which the first and most crucial was proved by Kenneth Arrow in 1950. That has often been taken to show the impossibility of democracy as a procedure for making collective decisions. However, this interpretation is challenged by several of the contributors here. Other central (...) issues discussed in the volume include the possibility of making interpersonal comparisons of utility, the question of whether all preferences are equally to be valued, and the normative individualism underlying the theoretical tradition. Criticisms of social choice theory are advanced and suggestions for alternative approaches are developed. (shrink)

Is GDP a good proxy for social welfare? Building on economic theory, this book confirms that it is not, but also that most alternatives to it share its basic flaw, i.e., a focus on specific aspects of people's lives without sufficiently taking account of people's values and goals. A better approach is possible.

Abstract: Thought experiments about the self seem to lead to deeply conflicting intuitions about the self. Cases imagined from the 3rd person perspective seem to provoke different responses than cases imagined from the 1st person perspective. This paper argues that recent cognitive theories of the imagination, coupled with standard views about indexical concepts, help explain our reactions in the 1st person cases. The explanation helps identify intuitions that should not be trusted as a guide to the metaphysics of the self.

1.1 In 1955, John Harsanyi proved a remarkable theorem:1 Suppose n agents satisfy the assumptions of von Neumann/Morgenstern (1947) expected utility theory, and so does the group as a whole (or an observer). Suppose that, if each member of the group prefers option a to b, then so does the group, or the observer (Pareto condition). Then the group’s utility function is a weighted sum of the individual utility functions. Despite Harsanyi’s insistence that what he calls the Utilitarian Theorem embeds (...) utilitarianism into a theory of rationality, the theorem has fallen short of having the kind of impact on the discussion of utilitarianism for which Harsanyi hoped. Yet how could the theorem influence this discussion? Utilitarianism is as attractive to some as it is appalling to others. The prospects for this dispute to be affected by a theorem seem dim. Yet a closer look shows how the theorem could make a contribution. To fix ideas, I understand by utilitarianism the following claims: (1) Consequentialism: Actions are evaluated in terms of their consequences only. (2) Bayesianism: An agent's beliefs about possible outcomes are captured probabilistically. (3) Welfarism: The judgement of the relative goodness of states of affairs is based.. (shrink)

In what follows, I wish to discuss empathy and sympathy’s relevance to ethics, taking recent findings into account. In particular, I want to consider sympathy’s relation to the idea of a person’s good or well-being. It is obvious and uncontroversial that sympathetic concern for a person involves some concern for her good and some desire to promote it. What I want to suggest is that the concept of a person’s good or well-being is one we have because we are capable (...) of care and sympathetic concern. Well-being is normative for care in the sense that it is intrinsic to the very idea of a person’s good that threats to it are what it makes sense to be concerned about for that person for her sake. (shrink)

Imagining that I am Napoleon is not (normally) imagining an impossibility. It is (or at least may be) just adopting a first person way of imagining Napoleon. The images and bits of narrative using 'I' are intended to refer to Napoleon and his surroundings, in something like the way that a salt shaker can stand for a regiment of troops when the general says "This is the third regiment' while explaining his plans at the breakfast table.