This article defends novel approaches to what we are and how we persist. First it is claimed that we have disjunctive persistence conditions: we can persist by way of either biological continuity or psychological continuity. Then it is claimed that we are neither human beings nor persons essentially. Rather, we are essentially bio-psycho-continuers, a concept to be explained along the way. A variety of objections are considered and found wanting.

Simon Cushing conducted the following interview with Elizabeth Anderson on 18 June 2014.

Vihvelin argues that Frankfurt-style cases should be divided into two kinds, according to when the trigger for the intention takes place: either prior to the agent's choice or after it. Most agree that only the former, which I call pre-decisional intervention, stands a chance of removing all of an agent's alternatives. Vihvelin notes that both sides in the dispute over whether there is a successful case of pre-decisional intervention assume that if there is a successful case, then it will be (...) a case where the agent has no alternative. Vihvelin thinks this is a mistake: agents subject to pre-decisional intervention still have alternatives, and the intricate discussion and development of ever more complex Frankfurt-style cases is beside the point. She argues for this by presenting a case, purportedly analogous to Frankfurt-style cases, where it is clear that there are alternatives available. Fischer has replied by disputing the analogy. In this paper I argue that Vihvelin is right to think the cases are analogous, but that both Fischer and Vihvelin are wrong to think that Vihvelin's parallel case is one where there are alternatives. Despite appearances, this is not the case, and I construct a Fischer-inspired argument to show this. (shrink)

The relationship of part to whole is one of the most fundamental there is; this is the first and only full-length study of this concept. This book shows that mereology, the formal theory of part and whole, is essential to ontology. Peter Simons surveys and criticizes previous theories, especially the standard extensional view, and proposes a more adequate account which encompasses both temporal and modal considerations in detail. 'Parts could easily be the standard book on mereology for the next twenty (...) or thirty years.' Timothy Williamson, Grazer Philosophische Studien. (shrink)

Which political principles should govern global politics? In his new book, Simon Caney engages with the work of philosophers, political theorists, and international relations scholars in order to examine some of the most pressing global issues of our time. Are there universal civil, political, and economic human rights? Should there be a system of supra- state institutions? Can humanitarian intervention be justified?

Scientific realism driven by inference to the best explanation (IBE) takes empirically confirmed objects to exist, independent, pace empiricism, of whether those objects are observable or not. This kind of realism, it has been claimed, does not need probabilistic reasoning to justify the claim that these objects exist. But I show that there are scientific contexts in which a non-probabilistic IBE-driven realism leads to a puzzle. Since IBE can be applied in scientific contexts in which empirical confirmation has not yet (...) been reached, realists will in these contexts be committed to the existence of empirically unconfirmed objects. As a consequence of such commitments, because they lack probabilistic features, the possible empirical confirmation of those objects is epistemically redundant with respect to realism. (shrink)

I argue that mass produced artifacts are ontologically distinctive. If we think of the making of an artifact as the imposition of a creative intention on to some matter, usually through intentional manipulation of the matter, then in the case of mass production, one could say that there is not enough mind to go around! Batches of mass produced objects will have a distinctive essence, lying in the creative act by which they are made, but within a batch, the objects (...) will be distinct from each other, but not essentially distinct. (shrink)

Proceedings of the Aristotelian Society, Volume 115, Issue 3pt3, Page 211-233, December 2015.

Intentionalism is the view that the phenomenal character of a conscious experience is wholly determined by, or even reducible to, its representational content. In this essay I put forward a version of intentionalism that allows (though does not require) the reduction of phenomenal character to representational content. Unlike other reductionist theories, however, it does not require the acceptance of phenomenal externalism (the view that phenomenal character does not supervene on the internal state of the subject). According the view offered here, (...) phenomenal characters essentially represent subject-environment relations that are relevant to the possibilities for causal interaction between the subject and the environment; relations of the kind that J. J. Gibson dubbed affordances. I argue for this view chiefly through an examination of spatial perception, though other cases are also considered. The view assumes that a phenomenal character has an essential functional role; though it need not be assumed that a functional role is sufficient for a phenomenal character. (shrink)

Saying ┌ that ψ is F ┐ when one should have said ┌ that φ is F ┐ involves making one of two different kinds of error. Either the wrong nominal term (┌ ψ ┐ instead of ┌ φ ┐) is ascribed to the right object or the right nominal term is ascribed to the wrong object. Judgments susceptible to one kind of error are immune to the other. Indexical terms such as ‘here’ and ‘now’ exhibit a corresponding pattern of (...) immunity and susceptibility to error, which suggests that they are complex demonstratives. This should also apply to ‘I’. (shrink)

This volume has its roots in two recent developments within mainstream analytic epistemology: a growing recognition over the past two or three decades of the active and social nature of our epistemic lives; and, more recently still, the increasing appreciation of the various ways in which the epistemic practices of individuals and societies can, and often do, go wrong. The theoretical analysis of these breakdowns in epistemic practice, along with the various harms and wrongs that follow as a consequence, constitutes (...) an approach to epistemology that we refer to as non-ideal epistemology. In this introductory chapter we introduce and contextualise the ten essays that comprise this volume, situating them within four broad sub-fields: vice epistemology, epistemic injustice, inter-personal epistemic practices, and applied epistemology. We also provide a brief overview of several other important growth areas in non-ideal epistemology. (shrink)

I explore the process of changes in the observability of entities and objects in science and how such changes impact two key issues in the scientific realism debate: the claim that predictively successful elements of past science are retained in current scientific theories, and the inductive defense of a specific version of inference to the best explanation with respect to unobservables. I provide a case-study of the discovery of radium by Marie Curie in order to show that the observability of (...) some entities can change and that such changes are relevant for arguments seeking to establish the reliability of success-to-truth inferences with respect to unobservables. (shrink)

The main purpose of this paper is to refute the metaphysicians ‘methodological continuation’ argument supporting epistemic realism in metaphysics. This argument aims to show that scientific realists have to accept that metaphysics is as rationally justified as science given that they both employ inference to the best explanation, i.e. that metaphysics and science are methodologically continuous. I argue that the reasons given by scientific realists as to why inference to the best explanation is reliable in science do not constitute a (...) reason to believe that it is reliable in metaphysics. The justification of IBE in science and the justification of IBE in metaphysics are two distinct issues with only superficial similarities, and one cannot rely on one for the other. This becomes especially clear when one analyses the debate about the legitimacy of IBE that has taken place between realists and empiricists. The metaphysician seeking to piggyback on the realist defense of IBE in science by the methodological continuation argument presupposes that the defense is straightforwardly applicable to metaphysics. I will argue that it is, in fact, not. The favoured defenses of IBE in scientific realism make extensive use of empirical considerations, predictive power and inductive evidence, all of which are paradigmatically absent in the metaphysical context. Furthermore, I argue that the metaphysician, even if the realist would concede to the methodological continuation argument, fails to offer any agreed upon conclusions resulting from its application in metaphysics. As a result, the scientific realist is not committed to believing that there is metaphysical knowledge. (shrink)

A distorted representation of one's own body is a diagnostic criterion and core psychopathology of both anorexia nervosa (AN) and bulimia nervosa (BN). Despite recent technical advances in research, it is still unknown whether this body image disturbance is characterized by body dissatisfaction and a low ideal weight and/or includes a distorted perception or processing of body size. In this article, we provide an update and meta-analysis of 42 articles summarizing measures and results for body size estimation (BSE) from 926 (...) individuals with AN, 536 individuals with BN and 1920 controls. We replicate findings that individuals with AN and BN overestimate their body size as compared to controls (ES= 0.63). Our meta-regression shows that metric methods (BSE by direct or indirect spatial measures) yield larger effect sizes than depictive methods (BSE by evaluating distorted pictures), and that effect sizes are larger for patients with BN than for patients with AN. To interpret these results, we suggest a revised theoretical framework for BSE that accounts for differences between depictive and metric BSE methods regarding the underlying body representations (conceptual vs. perceptual, implicit vs. explicit). We also discuss clinical implications and argue for the importance of multimethod approaches to investigate body image disturbance. (shrink)

Imagine that you are a farmer living in Kenya. Though you work hard to sell your produce to foreign markets you find yourself unable to do so because affluent countries subsidize their own farmers and erect barriers to trade, like tariffs, thereby undercutting you in the marketplace. As a consequence of their actions you languish in poverty despite your very best efforts. Or, imagine that you are a peasant whose livelihood depends on working in the fields in Indonesia and you (...) are forcibly displaced from your land by a biofuels company because corrupt government officials have stolen the land and sold it to the company. Or, suppose that you work on the coast of Bangladesh but find that increasingly you are unable to cope with salination resulting from sealevel rise – a product of anthropogenic climate change. These, I believe, are cases of global injustice. My question is: What are those who bear the brunt of global injustice entitled to do to secure their, and other people’s, entitlements? Often people focus on the duties of the affluent to respect and uphold the rights of the disadvantaged. This is understandable. But there is a striking omission. Rarely do people analyze, or even mention, what those who lack their entitlements are entitled to do to secure their own rights. This is my focus in this paper. More specifically, I examine what agents are entitled to do to change the underlying social, economic and political practices and structures in a more just direction. (shrink)

The thought-experiment presented by Bernard Williams in 'The self and the future' continues to draw the attention of writers in the debate about personal identity. While few of them agree on what implications it has for the debate, almost all agree that those implications are significant ones. Some have even claimed that it has consequences not only for personal identity, but also concerning the viability of thought-experiment as a method. This paper surveys what these consequences might be at both levels (...) - as a substantive contribution to the debate on identity, and as to what it shows about the usefulness of thought-experiments. It argues ultimately that thought-experiments like Williams's do provide a useful philosophical tool as long as we temper our expectations of them, and that it offers some support to a view of personal identity but one which is at odds with Williams's own view. (shrink)

This paper considers John Doris, Stephen Stich, Alexandra Plakias, and colleagues’ recent attempts to utilize empirical studies of cross-cultural variation in moral judgment to support a version of the argument from disagreement against moral realism. Crucially, Doris et al. claim that the moral disagreements highlighted by these studies are not susceptible to the standard ‘diffusing’ explanations realists have developed in response to earlier versions of the argument. I argue that plausible hypotheses about the cognitive processes underlying ordinary moral judgment and (...) the acquisition of moral norms, when combined with a popular philosophical account of moral inquiry—the method of reflective equilibrium—undercut the anti-realist force of the moral disagreements that Doris et al. describe. I also show that Stich's recent attempt to provide further theoretical support for Doris et al.'s case is unsuccessful. (shrink)

There is no interesting entailment either way between theism and various forms of realism. Taking its cue from Dummett's characterisation of realism and his discussion of it with respect to theistic belief, this paper argues both that theism does not follow from realism, and that God cannot be appealed to in order to secure bivalence for an otherwise indeterminate subject matter. In both cases, significant appeal is made to the position that God is not a language user, which in turn (...) is motivated by an account of understanding as aptitude possession. The resulting picture sits comfortably with the apophatism common within living religious traditions and with the view that the philosophy of religion ought to reorientate itself away from metaphysics towards more practical questions. (shrink)

If science fiction is a genre, then attempts to think about the nature of science fiction will be affected by one’s understanding of what genres are. I shall examine two approaches to genre, one dominant but inadequate, the other better, but only occasionally making itself seen. I shall then discuss several important, interrelated issues, focusing particularly on science fiction : what it is for a work to belong to a genre, the semantics of genre names, the validity of attempts to (...) define genres, and the connections between genre and normativity. One important but neglected clue to the nature of genres lies in the kinds of disagreements they generate over the assignment of works to genres. I conclude by explaining why these disagreements tell us something about the nature of genres, and discussing in some detail two famous cases of disagreement about whether some work or works are science fiction. (shrink)

In this paper I argue that there are different ways that an agent may be able to do otherwise and that therefore, when free will is understood as requiring that an agent be able to do otherwise, we face the following question: which way of being able to do otherwise is most relevant to free will? I answer this question by first discussing the nature of intrinsic dispositions and abilities, arguing that for each action type there is a spectrum of (...) intrinsic abilities. I suggest that recognising this allows us to articulate two ways in which an intrinsic ability is general (such that there are two kinds of non-general ability). And I argue that the abilities most relevant to free will need to be non-general in both of the ways identified. Along the way I show why these points threaten to undermine Vihvelin’s dispositionalist account of free will. (shrink)

The author argues that Plato’s “proof” that happiness follows justice has a fatal flaw – because the philosopher king in Plato’s Republic is itself a counter example.

Philosophers disagree over whether dispositions can be intrinsically finked or masked. Choi suggests that there are no clear, relevant differences between cases where intrinsic finks would be absurd and those where they seem plausible, and as a result rejects them wholesale. Here, I highlight two features of dispositional properties which, when considered together, provide a plausible explanation for when dispositions can be subject to intrinsic finks and when not.

Despite well-established results in survey methodology, many experimental philosophers have not asked whether and in what way conclusions about folk intuitions follow from people’s responses to their surveys. Rather, they appear to have proceeded on the assumption that intuitions can be simply read off from survey responses. Survey research, however, is fraught with difficulties. I review some of the relevant literature—particularly focusing on the conversational pragmatic aspects of survey research—and consider its application to common experimental philosophy surveys. I argue for (...) two claims. First, that experimental philosophers’ survey methodology leaves the facts about folk intuitions massively underdetermined; and second, that what has been regarded as evidence for the instability of philosophical intuitions is, at least in some cases, better accounted for in terms of subjects’ reactions to subtle pragmatic cues contained in the surveys. (shrink)

The paper investigates the epistemic conception of quantum states---the view that quantum states are not descriptions of quantum systems but rather reflect the assigning agents' epistemic relations to the systems. This idea, which can be found already in the works of Copenhagen adherents Heisenberg and Peierls, has received increasing attention in recent years because it promises an understanding of quantum theory in which neither the measurement problem nor a conflict between quantum non-locality and relativity theory arises. Here it is argued (...) that the main challenge for proponents of this idea is to make sense of the notion of a state assignment being performed correctly without thereby acknowledging the notion of a true state of a quantum system---a state it is in. An account based on the epistemic conception of states is proposed that fulfills this requirement by interpreting the rules governing state assignment as constitutive rules in the sense of John Searle. (shrink)

In this paper, I interview Francesca De Vecchi (Full Professor of Theoretical Philosophy in Vita-Salute San Raffaele University) about her qualitative ontology and its social and normative implications. If at the foundation of our lifeworld there are significantly qualitative experiences, phenomenology can investigate the most important contemporary issues, such as gender disparity, socio-virtuality depersonalizations and political urgencies.

This paper discusses two distinct questions of distributive justice raised by climate change. Stated very roughly, one question concerns how much protection is owed to the potential victims of climate change (the Just Target Question), and the second concerns how the burdens (and benefits) involved in preventing dangerous climate change should be distributed (the Just Burden Question). In Section II, I focus on the first of these questions, the Just Target Question. The rest of the paper examines the second question, (...) the Just Burden Question. To answer this question, I argue, it is necessary to address two important methodological questions (one concerning the choice between what I term Integrationism and Isolationism and the other concerning the choice between what I term Holism and Atomism). Sections III-V, thus, set out and explore these two methodological issues. Having done so, the paper then turns from methodological issues to substantive analysis, and in Section VI it examines three principles of distributive justice that, it has been suggested, should determine how the burden of addressing dangerous climatic changes should be distributed (the Polluter Pays Principle, the Ability to Pay Principle and the Beneficiary Pays Principle). (shrink)

Social scientists have paid insufficient attention to the role of law in constituting the economic institutions of capitalism. Part of this neglect emanates from inadequate conceptions of the nature of law itself. Spontaneous conceptions of law and property rights that downplay the role of the state are criticized here, because they typically assume relatively small numbers of agents and underplay the complexity and uncertainty in developed capitalist systems. In developed capitalist economies, law is sustained through interaction between private agents, courts (...) and the legislative apparatus. Law is also a key institution for overcoming contracting uncertainties. It is furthermore a part of the power structure of society, and a major means by which power is exercised. This argument is illustrated by considering institutions such as property and the firm. Complex systems of law have played a crucial role in capitalist development and are also vital for developing economies. (shrink)

Recent advances in natural language processing have given rise to a new kind of AI architecture: the language agent. By repeatedly calling an LLM to perform a variety of cognitive tasks, language agents are able to function autonomously to pursue goals specified in natural language and stored in a human-readable format. Because of their architecture, language agents exhibit behavior that is predictable according to the laws of folk psychology: they function as though they have desires and beliefs, and then make (...) and update plans to pursue their desires given their beliefs. We argue that the rise of language agents significantly reduces the probability of an existential catastrophe due to loss of control over an AGI. This is because the probability of such an existential catastrophe is proportional to the difficulty of aligning AGI systems, and language agents significantly reduce that difficulty. In particular, language agents help to resolve three important issues related to aligning AIs: reward misspecification, goal misgeneralization, and uninterpretability. (shrink)

The descriptions 'good' and 'bad' are examples of thin concepts, as opposed to 'kind' or 'cruel' which are thick concepts. Simon Kirchin provides one of the first full-length studies of the crucial distinction between 'thin' and 'thick' concepts, which is fundamental to many debates in ethics, aesthetics and epistemology.

In this paper I argue for a particularist understanding of thick evaluative features, something that is rarely done and is fairly controversial. That is, I argue that sometimes that the fact that an act is just, say, could, in certain situations, provide one with a reason against performing the action. Similarly, selfishness could be right-making. To show this, I take on anti-particularist ideas from two much-cited pieces (by Crisp, and by McNaughton and Rawling), in the influential Moral Particularism anthology (eds.) (...) Hooker and Little (OUP). My paper has already been cited by other people working in the field. (shrink)

While pluralism in ontology of art improves on various monistic views, through its eclectic approach it lost a lot of their simplicity, parsimony, unity and intuitiveness. The dualistic theory presented in this paper offers an alternative – it shares the advantages of the monistic views while retaining the wide scope of pluralism, and thus should be preferred for methodological reasons. On this view all artworks are at the same time abstract universals which are called recipes, and particular physical objects – (...) realisations. The fact that various artworks seem to differ in their ontology is due to certain fairly consistent culturally determined biases which cause people to prioritise the above compounds differently in cases of different arts. Thus the diversity of arts should not be considered on the level of ontology, as the pluralists would hold, but epistemology, or even further – socially determined phenomena concerning customary perception of various artworks. (shrink)

This chapter discusses the notion that time passes, along with two major families of objections to this notion. The first kind of objection concerns the rate at which time passes; it has often been suggested that no coherent rate can be given. The alleged problems for the standard view, that time passes at one second per second, are discussed. A positive suggestion is then made for a way of making sense of the claim that time passes at one second per (...) second, based on the notion of ‘stretching’ properties such as ‘being future’ across a time series made up of events. The second family of objections concerns the experience of time passing. Two arguments are discussed, one of which concerns epistemological issues while the other concerns the intentionality of experience. Overall the arguments from experience weigh against the passage of time. (shrink)

This paper develops an information-sensitive theory of the semantics and probability of conditionals and statements involving epistemic modals. The theory validates a number of principles linking probability and modality, including the principle that the probability of a conditional If A, then C equals the probability of C, updated with A. The theory avoids so-called triviality results, which are standardly taken to show that principles of this sort cannot be validated. To achieve this, we deny that rational agents update their credences (...) via conditionalization. We offer a new rule of update, Hyperconditionalization, which agrees with Conditionalization whenever nonmodal statements are at stake but differs for modal and conditional sentences. (shrink)

Many agents have failed to comply with their responsibilities to take the action needed to avoid dangerous anthropogenic climate change. This pervasive noncompliance raises two questions of nonideal political theory. First, it raises the question of what agents should do when others do not discharge their climate responsibilities. (the Responsibility Question) In this paper I put forward four principles that we need to employ to answer the Responsibility Question (Sections II-V). I then illustrate my account, by outlining four kinds of (...) action that should be undertaken (Section VI). Pervasive noncompliance also raises a second question: Given the lack of progress in combating climate change, should existing governance structures be maintained or changed (and if they should be changed, in what ways)? (the Governance Question). The paper briefly outlines a methodology for addressing this question and outlines what a nonideal response to the existing institutional structures would be (Section VII). It does so with reference to the Paris Agreement, and in particular the creation of a "global stocktake" (Article 14, Paris Agreement) and the "facilitative dialogue" (paragraph 20 of the ‘Adoption of the Paris Agreement’). The aim, then, is to set out an account of a nonideal theory of climate justice. (shrink)

A short play wherein three pregnant (previously) anti-abortion men consider the arguments for and against abortion.

‘Transplant’ thought-experiments, in which the cerebrum is moved from one body to another, have featured in a number of recent discussions in the personal identity literature. Once taken as offering confirmation of some form of psychological continuity theory of identity, arguments from Marya Schechtman and Kathleen Wilkes have contended that this is not the case. Any such apparent support is due to a lack of detail in their description or a reliance on predictions that we are in no position to (...) make. I argue that the case against them rests on two serious misunderstandings of the operation of thought-experiments, and that even if they do not ultimately support a psychological continuity theory, they do major damage to that theory’s opponents. (shrink)

Governments are often so focused on short-term gains that they ignore the long term, thus creating extra unnecessary burdens on their citizens, and violating their responsibilities to future generations. What can be done about this? In this paper I propose a package of reforms to the ways in which policies are made by legislatures, and in which those policies are scrutinised, implemented and evaluated. The overarching aim is to enhance the accountability of the decision-making process in ways that take into (...) account the interests of persons in the future. (shrink)

Stump and Timpe have recently proposed Thomistic based solutions to the traditional problem in Christian theology of how to relate grace and free will. By taking a closer look at the notion of control, I subject Timpe’s account – itself an extension of Stump’s account – to extended critique. I argue that the centrepiece of Timpe’s solution, his reliance on Dowe’s notion of quasi-causation, is misguided and irrelevant to the problem. As a result, Timpe’s account fails to avoid Semi-Pelagianism. I (...) canvass two alternatives, each of which adheres to the broad theological assumptions made by Stump and Timpe, including the positing of only one “unique” grace. I conclude that each of these proposals fails, although I argue that one comes as close as it is possible to get to a solution given the assumptions made. -/- . (shrink)

The paper sets forth an argument against Kim's distinction between levels and orders.

En el siguiente artículo se estudiarán tres estrategias argumentativas para abordar un tópico reciente de debate en la filosofía de la religión conocido como el "Gap Problem". En él se procura estudiar la "fase II" de los argumentos cosmológicos, en la que se busca establecer propiedades o atributos teístas que identifiquen a la primera causa o ser necesario con el concepto de Dios. La contribución única de este estudio consiste en la presentación formalizada y sistemática de las distintas soluciones propuestas (...) por autores del ámbito filosófico, sintetizando sus ideas centrales y presentándolas en forma de argumentos. (shrink)

According to philosophical orthodoxy, there are informative criteria of identity over time. Anti-criterialism rejects this orthodoxy and claims that there are no such criteria. This paper examines anti-criterialism in the light of recent attacks on the thesis by Matt Duncan, Sydney Shoemaker and Dean Zimmerman. It is argued that those attacks are not successful. Along the way, a novel strategy to defend anti-criterialism against the critics’ most challenging objection is developed. Under-appreciated difficulties for criterialism are also raised which, I claim, (...) there is no obvious way to solve. It is concluded that anti-criterialism may be a much stronger rival to criterialism than is often supposed. (shrink)

The aim of this chapter is to test the degree to which Deleuze’s philosophy can be reconciled with the subject naturalist approach to pragmatism put forward by Macarthur and Price.

According to the B-theory, the passage of time is an illusion. The B-theory therefore requires an explanation of this illusion before it can be regarded as fullysatisfactory; yet very few B-theorists have taken up the challenge of trying to provide one. In this paper I take some first steps toward such an explanation by first making a methodological proposal, then a hypothesis about a key element in the phenomenology of temporal passage. The methodological proposal focuses onthe representational content of the (...) element of experience by virtue of which time seems to pass. The hypothesis involves the claim that the experience of changeinvolves the representation of something enduring, rather than perduring, through any change. (shrink)

There are two currently popular but quite different ways of answering the question of what constitutes personal identity: the one is usually called the psychological continuity theory (or Psychological View) and the other the narrative theory.1 Despite their differences, they do both claim to be providing an account—the correct account—of what makes someone the same person over time. Marya Schechtman has presented an important argument in this journal (Schechtman 2005) for a version of the narrative view (the ‘Self-Understanding View’) over (...) the psychological one, an argument which has received an overwhelmingly positive response from commentators (Gillett 2005; Heinemaa 2005; Phillips 2006). I wish to argue that .. (shrink)

The quantified argument calculus (Quarc) is a novel logic that departs in several ways from mainstream first-order logic. In particular, its quantifiers are not sentential operators attached to variables, but attach to unary predicates to form arguments – quantified arguments – of other predicates. Furthermore, Quarc includes devices to account for anaphora, active-passive-voice distinctions, and sentence- versus predicate-negation. While this base system has already been shown to be sound and complete, modal extensions still lack such results. The present paper fills (...) this lacuna by developing a modal extension of Quarc, including identity. The semantics will invalidate the Quarc-analogues of the Barcan-formula and its converse, as well as treat identity as contingent by default. Furthermore, an unlabelled Gentzen-style natural deduction system will be presented, which includes the full expressive power of Quarc. It will be shown to be strongly sound and complete with respect to relational frames. The paper closes off with considerations on how to extend the system to cover other normal modal logics as well as extensions to suitable three-valued semantics that capture relevant types of presupposition-failure. (shrink)

We can introduce singular terms for ordered pairs by means of an abstraction principle. Doing so proves useful for a number of projects in the philosophy of mathematics. However there is a question whether we can appeal to the abstraction principle in good faith, since a version of the Caesar Problem can be generated, posing the worry that abstraction fails to introduce expressions which refer determinately to the requisite sort of object. In this note I will pose the difficulty, and (...) then propose a solution. Since my solution appeals to a plausible constraint on the introduction of new expressions to a language, it is of interest independently of the particular case of terms for pairs. Since these provide the occasion for discussion we should nonetheless review the use of abstraction for pairs before the argumentative business of the paper commences. (shrink)

This paper explores the principle that knowledge is fragile, in that whenever S knows that S doesn’t know that S knows that p, S thereby fails to know p. Fragility is motivated by the infelicity of dubious assertions, utterances which assert p while acknowledging higher-order ignorance whether p. Fragility is interestingly weaker than KK, the principle that if S knows p, then S knows that S knows p. Existing theories of knowledge which deny KK by accepting a Margin for Error (...) principle can be conservatively extended with Fragility. (shrink)

Under what conditions would an artificially intelligent system have wellbeing? Despite its clear bearing on the ethics of human interactions with artificial systems, this question has received little direct attention. Because all major theories of wellbeing hold that an individual’s welfare level is partially determined by their mental life, we begin by considering whether artificial systems have mental states. We show that a wide range of theories of mental states, when combined with leading theories of wellbeing, predict that certain existing (...) artificial systems have wellbeing. Along the way, we argue that there are good reasons to believe that artificial systems can have wellbeing even if they are not phenomenally conscious. While we do not claim to demonstrate conclusively that AI systems have wellbeing, we argue that there is a significant probability that some AI systems have or will soon have wellbeing, and that this should lead us to reassess our relationship with the intelligent systems we create. (shrink)