Reasoning about situations we take to be impossible is useful for a variety of theoretical purposes. Furthermore, using a device of impossible worlds when reasoning about the impossible is useful in the same sorts of ways that the device of possible worlds is useful when reasoning about the possible. This paper discusses some of the uses of impossible worlds and argues that commitment to them can and should be had without great metaphysical or logical cost. The paper then provides an (...) account of reasoning with impossible worlds, by treating such reasoning as reasoning employing counterpossible conditionals, and provides a semantics for the proposed treatment. (shrink)

It seems that, whereas a person's death needn't be a bad thing for him, it can be. In some circumstances, death isn't a "bad thing" or an "evil" for a person. For instance, if a person has a terminal and very painful disease, he might rationally regard his own death as a good thing for him, or at least, he may regard it as something whose prospective occurrence shouldn't be regretted. But the attitude of a "normal" and healthy human being (...) - adult or child - toward the prospect of his death is different; it is not unreasonable in certain cases to regard one's own death as a bad thing for oneself. If this is so, then the question arises as to why death is bad, in those cases in which it is bad. (shrink)

The ancient philosophical school of Epicureanism tried to argue that death is "nothing to us." Were they right? James Warren provides a comprehensive study and articulation of the interlocking arguments against the fear of death found not only in the writings of Epicurus himself, but also in Lucretius' poem De rerum natura and in Philodemus' work De morte. These arguments are central to the Epicurean project of providing ataraxia (freedom from anxiety) and therefore central to an understanding of Epicureanism as (...) a whole. They also offer significant resources for modern discussions of the value of death--one which stands at the intersection of metaphysics and ethics. If death is the end of the subject, and the subject can not be benefited nor harmed after death, is it reasonable nevertheless to fear the ceasing-to-be? If the Epicureans are not right to claim that the dead can neither be benefited nor harmed, what alternative models might be offered for understanding the harm done by death and do these alternatives suffer from any further difficulties? The discussion involves consideration of both ethical and metaphysical topics since it requires analysis not only of the nature of a good life but also the nature of personal identity and time. A number of modern philosophers have offered criticisms or defences of the Epicureans' views. Warren explores and evaluates these in the light of a systematic and detailed study of the precise form and intention of the Epicureans' original arguments. Warren argues that the Epicureans also were interested in showing that mortality is not to be regretted and that premature death is not to be feared. Their arguments for these conclusions are to be found in their positive conception of the nature of a good and complete life, which divorce the completeness of a life as far as possible from considerations of its duration. Later chapters investigate the nature of a life lived without the fear of death and pose serious problems for the Epicureans being able to allow any concern for the post mortem future and being able to offer a positive reason for prolonging a life which is already complete in their terms. (shrink)

Decision theory has at its core a set of mathematical theorems that connect rational preferences to functions with certain structural properties. The components of these theorems, as well as their bearing on questions surrounding rationality, can be interpreted in a variety of ways. Philosophy’s current interest in decision theory represents a convergence of two very different lines of thought, one concerned with the question of how one ought to act, and the other concerned with the question of what action consists (...) in and what it reveals about the actor’s mental states. As a result, the theory has come to have two different uses in philosophy, which we might call the normative use and the interpretive use. It also has a related use that is largely within the domain of psychology, the descriptive use. This essay examines the historical development of decision theory and its uses; the relationship between the norm of decision theory and the notion of rationality; and the interdependence of the uses of decision theory. (shrink)

Challenging, with several powerful arguments, some of our deepest beliefs about rationality, morality, and personal identity, Parfit claims that we have a false view about our own nature. It is often rational to act against our own best interersts, he argues, and most of us have moral views that are self-defeating. We often act wrongly, although we know there will be no one with serious grounds for complaint, and when we consider future generations it is very hard to avoid conclusions (...) that most of us will find very disturbing. (shrink)

Unified theories of de se attitudes and de dicto attitudes, along the lines of David Lewis’s proposal, face a problem. Whether or not they are adequate for representing beliefs, they can misrepresent the content of many of our desires, which rank possible outcomes in which the agent with the desire does not exist. These desires are shown to play a role in the rational explanation of action, and recognising them is important in our understanding of ourselves. Lewis’s account of attitudes (...) de dicto and de se is shown to be unsatisfactory, and the lessons learned are applied more broadly. (shrink)

According to the “deprivation approach,” a person’s death is bad for her to the extent that it deprives her of goods. This approach faces the Lucretian problem that prenatal non-existence deprives us of goods just as much as death does, but does not seem bad at all. The two most prominent responses to this challenge—one of which is provided by Frederik Kaufman (inspired by Thomas Nagel) and the other by Anthony Brueckner and John Martin Fischer—claim that prenatal non-existence is relevantly (...) different from death. This paper criticizes these responses. (shrink)

Abstract: The symmetry argument is an objection to the 'deprivation approach'– the account of badness favored by nearly all philosophers who take death to be bad for the one who dies. Frederik Kaufman's recent response to the symmetry argument is a development of Thomas Nagel's suggestion that we could not have come into existence substantially earlier than we in fact did. In this paper, I aim to show that Kaufman's suggestion fails. I also consider several possible modifications of his theory, (...) and argue that they are unsuccessful as well. (shrink)

"[This book] proposes new foundations for the Bayesian principle of rational action, and goes on to develop a new logic of desirability and probabtility."—Frederic Schick, _Journal of Philosophy_.

This paper identifies two possible versions of the Epicurean 'Symmetry argument', both of which claim that post mortem non-existence is relevantly like prenatal non-existence and that therefore our attitude to the former should be the same as that towards the latter. One version addresses the fear of the state of being dead by making it equivalent to the state of not yet being born; the other addresses the prospective fear of dying by relating it to our present retrospective attitude to (...) the time before birth. I argue that only the first of these is present in the relevant sections of Lucretius (DRN 3.832-42, 972-5). Therefore, this argument is not aimed at a prospective fear of death, or a fear of 'mortality'. That particular fear is instead addressed by the Epicureans through the additional premise (found in the Letter to Menoeceus 125) that it is irrational to fear in prospect an event which is known to be painless when present. This still leaves unaddressed the related fear of 'premature death', which is to be removed through the acceptance of Epicurean hedonism. (shrink)

Perfectionism is one of the leading moral views of the Western tradition, defended by Plato, Aristotle, Aquinas, Leibniz, Hegel, Marx, Nietzsche, and Green. Defined broadly, it holds that what is right is whatever most promotes certain objective human goods such as knowledge, achievement, and deep personal relations. Defined more narrowly, it identifies these goods by reference to human nature, so the human good consistsin developing the properties fundamental to human beings. If it is fundamental to humans to be rational (Aristotle), (...) to labor (Marx), or to exercise power (Nietzsche), developing these traits is best. This book tries to formulate the most defensible version of perfectionism using contemporary analytic techniques. It first examines narrow perfectionism, asking what kind of properties human nature consists in (distinctive? essential?); how these properties are identified; and what they are. It then explores issues relevant to both broad and narrow perfectionism, including whether each person should pursue just his own perfection or everyone's; how perfectionist goods are compared and aggregated; and in what particular times they are. On the last topic it develops an “Aristotelian” theory of the value of theoretical and practical rationality, as embodied in beliefs and ends with specified formal properties. The book closes by examining perfectionism's implications for political questions about liberty and equality. (shrink)

We use “I’ll be glad I did it” reasoning all the time. For example, last night I was trying to decide whether to work on this paper or go out to a movie. I realized that if I worked on the paper, then today I would be glad I did it. Whereas, if I went out to the movie, today I would regret it. This enabled me to see that I should work on the paper rather than going out to (...) a movie. This looks like excellent reasoning: Paper argument: 1. If I work on my paper, I’ll be glad I did it. 2. Therefore, I should work on my paper. When we’re having trouble making a big life decision, we often try to picture what will happen each way we might choose, and imagine how we’ll feel in that outcome. When choosing between two jobs, we might use this reasoning. Suppose you are choosing between two jobs and you know quite a lot about what the two jobs will be like. In one, you will make a lot of money but have to work eighty-hour weeks and see little of your family. In the other, you will make considerably less money—though enough to support yourself and your family. You’ll have much more time for your family. The money is attractive. But overall, you realize you’ll be glad to have the time with your family if you take the second job—you’ll be glad you made that choice. It seems this is a good way of realizing that you should take the second job. (shrink)

Why do we wish to die later but do not wish to have been created earlier? There is no puzzle here. It is false that if we had been created earlier we would have lived longer lives. Why don’t we wish to have been created earlier but with our actual times of death? That wish simply is not mandated by the more general wish to have lived a longer life. Furthermore, one might prefer one’s actual life to the better, but (...) considerably different, life one would have lived at an earlier time. (shrink)

Most of us display a bias toward the near: we prefer pleasurable experiences to be in our near future and painful experiences to be in our distant future. We also display a bias toward the future: we prefer pleasurable experiences to be in our future and painful experiences to be in our past. While philosophers have tended to think that near bias is a rational defect, almost no one finds future bias objectionable. In this essay, we argue that this hybrid (...) position is untenable. We conclude that those who reject near bias should instead endorse complete temporal neutrality. (shrink)

In previous work we have defended the deprivation account of death’s badness against worries stemming from the Lucretian point that prenatal and posthumous nonexistence are deprivations of the same sort. In a recent article in this journal, Fred Feldman has offered an insightful critique of our Parfitian strategy for defending the deprivation account of death’s badness. Here we adjust, clarify, and defend our strategy for reply to Lucretian worries on behalf of the deprivation account.

Most of us are “time-biased” in preferring pains to be past rather than future and pleasures to be future rather than past. However, it turns out that if you are risk averse and time-biased, then you can be turned into a “pain pump”—in order to insure yourself against misfortune, you will take a series of pills which leaves you with more pain and better off in no respect. Since this vulnerability seems rationally impermissible, while time-bias and risk aversion seem rationally (...) permissible, we are left with a puzzle. (shrink)

An important feature of life is the temporal value asymmetry. Not to be confused with temporal discounting, the value asymmetry is the fact that we prefer future rather than past preferences be satisfied. Misfortunes are better in the past--where they are "over and done"--than in the future. Using recent work in empirical psychology and evolutionary theory, we develop a theory of the nature and causes of the temporal value asymmetry. The account we develop undercuts philosophy of time arguments such as (...) that of Prior (1959), but more importantly, also begins a serious study of an interesting but understudied feature of our valuations and emotional attitudes. While in the spirit of certain past sketches about the possible origins of the temporal value asymmetry, our theory improves on them in many significant respects and suggests many clear avenues of future study. More generally, our hope is that work on the temporal value asymmetry will eventually attain the degree of rigor and explanatory power that the discounting asymmetry presently enjoys, for like this latter asymmetry, we believe the temporal value asymmetry has relevance to many practical issues in decision-making. Our paper can thus be seen as a call for a more unified methodological treatment of the two temporal asymmetries. (shrink)

For most us, learning which quantum theory correctly describes human bodies will not affect our attitudes towards our loved ones. On the other hand, a child’s discovery of the nature of meat (or an adult’s discovery of the nature of soylent green) can have a great effect. In still other cases, it is hard to say how one would, or should, react to new information about the underlying nature of what we value—think of how mixed our reactions are to evidence (...) of cultural determinism or atheism, or of how mixed our reactions would be to learning that we all live in the Matrix. (Indeed, maybe there is no objective fact about how we should react. Derek Parfit’s (1984, section 95) fear of death diminished when he became convinced of certain theses about the metaphysics of personal identity. Perhaps there is no objective fact of the matter as to whether this was rational; perhaps it was rational for him but would not be for others.) What can metaphysics contribute to the question of the evil of death? It cannot, on its own, settle the question, since there is no simple rule telling us how to adjust value in light of new information about underlying nature. Given a clear view of the nature of death, there will remain the question of its disvalue. However, metaphysics can help us attain this clear view. Moreover, a clear conception of what metaphysical positions do and don’t say, and a clear conception of how metaphysics works in general, can remove impediments to a rational appraisal of the evil of death. (shrink)