We extend in a natural way the operation of Turing machines to infinite ordinal time, and investigate the resulting supertask theory of computability and decidability on the reals. Everyset. for example, is decidable by such machines, and the semi-decidable sets form a portion of thesets. Our oracle concept leads to a notion of relative computability for sets of reals and a rich degree structure, stratified by two natural jump operators.

Applying Woodin's non-stationary tower notion of forcing, I prove that the existence of a supercompact cardinal κ in V and a Ramsey dilator in some small forcing extension V[G] implies the existence in V of a measurable dilator of size κ, measurable by κ-complete measures.

Infinite time Turing machines extend the operation of ordinary Turing machines into transfinite ordinal time. By doing so, they provide a natural model of infinitary computability, a theoretical setting for the analysis of the power and limitations of supertask algorithms.

The essays in this collection treat historical, literary, and philosophical topics related to Ayn Rand's Anthem, an anti-utopia fantasy set in the future. The first book-length study on Anthem, this collection covers subjects such as free will, political freedom, and the connection between freedom and individual thought and privacy.

The Anthropology of Sport and Human Movement represents a collection of work that reveals and explores the often times dramatic relationship of our biology and culture that is inextricably woven into a tapestry of movement patterns. It explores the underpinning of human movement, reflected in play, sport, games and human culture from an evolutionary perspective and contemporary expression of sport and human movement.

Problems about the accidental properties of properties motivate us--force us, I think--not to identify properties with the sets of their instances. If we identify them instead with functions from worlds to extensions, we get a theory of properties that is neutral with respect to disputes over counterpart theory, and we avoid a problem for Lewis's theory of events. Similar problems about the temporary properties of properties motivate us--though this time they probably don't force us--to give up this theory as (...) well, and to identify properties with functions from world, time pairs to extensions. Again, the replacement theory is neutral with respect to a metaphysical dispute that the old theory (arguably) forces us to take a stand on--the dispute over whether objects have temporal parts. It also allows us to give a smoother semantics for predication, to better accommodate our intuitions about which objects temporary properties are properties of, and to make temporally self-locating beliefs genuinely self -locating. (shrink)

David Lewis (1941-2001) was Class of 1943 University Professor of Philosophy at Princeton University. His contributions spanned philosophical logic, philosophy of language, philosophy of mind, philosophy of science, metaphysics, and epistemology. In On the Plurality of Worlds, he defended his challenging metaphysical position, "modal realism." He was also the author of the books Convention, Counterfactuals, Parts of Classes, and several volumes of collected papers.

Comments on Andy Egan’s "Second-Order Predication and the Metaphysics of Properties," presented at California State University Long Beach, CA 2003.

The Handmaid’s Tale depicts a United States taken over by a fundamentalist dictatorship called Gilead that also resembles Plato’s ideal city. Attempts to explain Gilead’s debt to Plato face two challenges. First, aspects of Gilead that recall Plato also contain features that differ, at times dramatically, from the Platonic original. Second, Gilead invokes distorted versions of ideas from philosophies other than Plato’s. I explore two ways of making sense of Gilead’s distorted philosophical appropriations. The explanations differ over whether such distortions (...) are best explained by the nature of the philosophies they misrepresent, or by the nature of Gilead. The explanation that emphasizes Gilead’s own agency is ultimately best able to make sense of how illiberal regimes misappropriate philosophical concepts, both in the novel and in reality, in order to limit the political imagination of their subjects. (shrink)

This book is a defense of modal realism; the thesis that our world is but one of a plurality of worlds, and that the individuals that inhabit our world are only a few out of all the inhabitants of all the worlds. Lewis argues that the philosophical utility of modal realism is a good reason for believing that it is true.

It is advisable to treat some sorts of discourse about fiction with the aid of an intensional operator "in such-And-Such fiction...." the operator may appear either explicitly or tacitly. It may be analyzed in terms of similarity of worlds, As follows: "in the fiction f, A" means that a is true in those of the worlds where f is told as known fact rather than fiction that differ least from our world, Or from the belief worlds of the community in (...) which the fiction originated. (shrink)

Reprint of the ed. published by Viking Press, New York.

A lineage of prominent philosophers who have discussed the second-person relation can be regarded as advancing structural accounts. They posit that the second-person relation effects one transformative change to the structure of practical reasoning. In this paper, I criticise this orthodoxy and offer an alternative, substantive account. That is, I argue that entering into second-personal relations with others does indeed affect one's practical reasoning, but it does this not by altering the structure of one's agential thought, but by changing what (...) reasons can become available. The importance of second-personal thought for action is heterogenous. Second-person relations make possible the emergence of a wide variety of different kinds of practical reasons: creating some, revealing others. Recognising this diminishes the appeal of the traditional, structural accounts of the practical significance of such second-personal relations. Moving away from structural accounts facilitates a more thorough understanding of the intersubjective form of action. (shrink)

In his note "can there be vague objects?" ("analysis", 1978), Gareth evans presents a purported proof that there can be no vague identity statements. Some readers think that evans endorses the proof and its false conclusion. Not so. His point is that those who put vagueness in the world, Rather than in language, Will have no way to fault the proof and no way to escape the false conclusion.

This paper is about the similarity between the appreciation of a piece of art, such as a cherished music album, and the loving appreciation of a person whom one knows well. In philosophical discussion about the rationality of love, the Qualities View (QV) says that love can be justified by reference to the qualities of the beloved. I argue that the oft-rehearsed trading-up objection fails to undermine the QV. The problems typically identified by the objection arise from the idea that (...) love-worthy qualities could be coarse-grained, when in fact they must be fine-grained. The analogy with appreciation of aesthetic qualities helps to draw out this point. Once the fine-grained nature of love-worthy qualities is properly understood, it is clear that critics of the QV cannot rely on the trading-up objection to motivate its rejection. Moreover, the paper’s core argument helps to illuminate the persistently aesthetic nature of interpersonal affections. (shrink)

This book examines the formation of the Chinese empire through its reorganization and reinterpretation of its basic spatial units: the human body, the household ...

I discuss the knowledge account of legal proof in Moss (2023) and develop an alternative. The unifying thread throughout this article are reflections on the beyond reasonable doubt (BRD) standard of proof. In Section 1, I will introduce the details of Moss’s account and how she motivates it via the BRD standard. In Section 2, I will argue that there are important disanalogies between BRD and knowledge that undermine Moss’s argument. There is however another motivation for the knowledge account: combined (...) with auxiliary claims, that is probabilistic knowledge and moral encroachment, it can provide a general solution to the puzzle of statistical evidence. Section 3 spells out the details. In Section 4, I suggest to combine the knowledge account with pragmatic encroachment, instead of moral encroachment, in order to stay clear of the thorny issues whether corporations have moral rights. In Section 5, I argue that the verdicts of Moss’s account in cases of false justified beliefs and non-luminous knowledge conflict with the BRD standard and thus call for abandoning the account. Based on the social function of the BRD standard, I suggest a replacement for the knowledge account that is also just as potent as a general solution for the puzzle of statistical evidence. While I will grant that knowledge is neither always necessary nor always sufficient for convictions, I will argue that the concept of knowledge nonetheless plays a significant and ineliminable role in legal decision-making. (shrink)

“There’s no disputing about taste.” That’s got a nice ring to it, but it’s not quite the ring of truth. While there’s definitely something right about the aphorism – there’s a reason why it is, after all, an aphorism, and why its utterance tends to produce so much nodding of heads and muttering of “just so” and “yes, quite” – it’s surprisingly difficult to put one’s finger on just what the truth in the neighborhood is, exactly. One thing that’s pretty (...) clear is that what’s right about the aphorism, that there’s no disputing about taste, isn’t that there’s no disputing about taste. There’s heaps of disputing about taste. People engage in disputes about which movies, music, paintings, literature, meals, furniture, architectural styles, etc. are good, beautiful, tasty, fun, elegant, ugly, disgusting, etc. all the time. This is obvious to anyone who has watched dueling-movie-critics shows, read theater reviews, or negotiated with a group or partner about which movie or restaurant to go to, or which sofa or painting to put in the living room. It takes great care and good aim to fling a brick without hitting somebody who’s engaged in a dispute about taste. (shrink)

According to a recent paper by Tim Maudlin, Bell’s theorem has nothing to tell us about realism or the descriptive completeness of quantum mechanics. What it shows is that quantum mechanics is non-local, no more and no less. What I intend to do in this paper is to challenge Maudlin’s assertion about the import of Bell’s proof. There is much that I agree with in the paper; in particular, it does us the valuable service of demonstrating that Einstein’s objections to (...) quantum mechanics have nothing to do with its indeterminism. But I do think that Maudlin’s conclusion is overly cut-and-dried. Quantum mechanics is far from a unified edifice, and what Bell’s theorem shows depends on what version of quantum mechanics you look at. In particular, I’ll try to make the case that there’s an interesting, if ultimately uncompelling anti-realist construal of the import of Bell’s theorem. And I also want to suggest that locality isn’t quite as decisively defeated as Maudlin claims. (shrink)

The bibliography lists about 10.000 titles of monographs, collections and articles in the field of the philosophy of religion and philosophical theology that ...

This is the first of a three-volume collection of David Lewis's most recent papers in all the areas to which he has made significant contributions. The purpose of this collection (and the two volumes to follow) is to disseminate even more widely the work of a preeminent and influential late twentieth-century philosopher. The papers are now offered in a readily accessible format. This first volume is devoted to Lewis's work on philosophical logic from the last twenty-five years. The (...) topics covered include: deploying the methods of formal semantics from artificial formalised languages to natural languages, model-theoretic investigations of intensional logic, contradiction, relevance, the differences between analog and digital representation, and questions arising from the construction of ambitious formalised philosophical systems. The volume will serve as an important reference tool for all philosophers and their students. (shrink)

A very simple contextualist treatment of a sentence containing an epistemic modal, e.g. a might be F, is that it is true iff for all the contextually salient community knows, a is F. It is widely agreed that the simple theory will not work in some cases, but the counterexamples produced so far seem amenable to a more complicated contextualist theory. We argue, however, that no contextualist theory can capture the evaluations speakers naturally make of sentences containing epistemic modals. If (...) we want to respect these evaluations, our best option is a relativist theory of epistemic modals. On a relativist theory, an utterance of a might be F can be true relative to one context of evaluation and false relative to another. We argue that such a theory does better than any rival approach at capturing all the behaviour of epistemic modals. (shrink)

I think that there are good reasons to adopt a relativist semantics for epistemic modal claims such as ``the treasure might be under the palm tree'', according to which such utterances determine a truth value relative to something finer-grained than just a world (or a <world, time> pair). Anyone who is inclined to relativise truth to more than just worlds and times faces a problem about assertion. It's easy to be puzzled about just what purpose would be served by assertions (...) of this kind, and how to understand what we'd be up to in our use of sentences like ``the treasure might be under the palm tree'', if they have such peculiar truth conditions. After providing a very quick argument to motivate a relativist view of epistemic modals, I bring out and attempt to resolve this problem in making sense of the role of assertions with relativist truth conditions. Solving this problem should be helpful in two ways: first, it eliminates an apparently forceful objection to relativism, and second, spelling out the relativist account of assertion and communication will help to make clear just what the relativist position is, exactly, and why it's interesting. (shrink)

Synthesizing decades of influential research and theory, Michael Lewis demonstrates the centrality of consciousness for emotional development. At first, infants' competencies constitute innate reactions to particular physical events in the child's world. These "action patterns" are not learned, but are readily influenced by temperament and social interactions. With the rise of consciousness, these early competencies become reflected feelings, giving rise to the self-conscious emotions of empathy, envy, and embarrassment, and, later, shame, guilt, and pride. Focusing on typically developing children, (...) Lewis also explores problems of atypical emotional development. (shrink)

This essay investigates consequentialist reasoning in law. It begins with a brief exposition of the structure of consequentialist reasoning. It then turns to the role of consequentialist reasoning in two aspects of legal decision-making. Legal officials must reason both about ends and about the choice of means to achieve those ends. Legal instrumentalism, however, takes many forms, and different forms identify different officials to engage in the task of reasoning consequentially to choose means. The essay then considers the difficulties posed (...) by the fact that legal decision-makers choose policies or institutions that structure the outcomes they hope to achieve. Finally, the essay considers the role that consequentialist reasoning may play in choosing ends. (shrink)

This essay disentangles the complex relations between economic logic and legal logic. It distinguishes economic logic as a social process from economic logic as economic reasoning; economic reasoning to explain behavior from economic reasoning to evaluate behavioral outcomes; and legal reasoning in judicial contexts from legal reasoning in other contexts such as legislation and legal enforcement or compliance. It then argues first that economic logic as the logic of social processes deepens our understanding of how law develops and how it (...) influences behavior. But the essay argues second that economic logic plays at best a limited role in the logic of legal reasoning for two reasons. Much legal reasoning seeks to identify the goals we should and do pursue while economic logic takes such goals as given. Further, the instrumental role of economic logic will vary with the institutional context in which legal reasoning occurs. (shrink)

J.M. Coetzee’s book, 'Elizabeth Costello' is one of the stranger works to appear in recent years. Yet if we focus our attention on the book’s two chapters dealing with animals, two preoccupations emerge. The first sees Coetzee use animals to evoke a particular conception of ethics, one similar to that of the philosopher Mary Midgley. Coetzee’s second theme connects animals to the phenomena of scapegoating, as it has been characterized by the philosophical anthropologist René Girard. While both themes involve human (...) interactions with animals, each transcends application to that particular issue and raises deeper questions, respectively concerning the foundations of morality and the therapeutic allure of political violence. Making explicit these two preoccupations enhances our understanding of Coetzee’s fiction, particularly Disgrace. However, when Coetzee’s two philosophical strands are analyzed in their own terms, the ethics of sympathy is shown to be a more coherent notion than the understanding of politics he takes over from Girard. (shrink)

The moral status of animals is a subject of controversy both within and beyond academic philosophy, especially regarding the question of whether and when it is ethical to eat meat. A commitment to animal rights and related notions of animal protection is often thought to entail a plant-based diet, but recent philosophical work challenges this view by arguing that, even if animals warrant a high degree of moral standing, we are permitted - or even obliged - to eat meat. (...) class='Hi'>Andy Lamey provides critical analysis of past and present dialogues surrounding animal rights, discussing topics including plant agriculture, animal cognition, and in vitro meat. He documents the trend toward a new kind of omnivorism that justifies meat-eating within a framework of animal protection, and evaluates for the first time which forms of this new omnivorism can be ethically justified, providing crucial guidance for philosophers as well as researchers in culture and agriculture. (shrink)