This paper is a systematic exploration of non-wellfounded mereology. Motivations and applications suggested in the literature are considered. Some are exotic like Borges’ Aleph, and the Trinity; other examples are less so, like time traveling bricks, and even Geach’s Tibbles the Cat. The authors point out that the transitivity of non-wellfounded parthood is inconsistent with extensionality. A non-wellfounded mereology is developed with careful consideration paid to rival notions of supplementation and fusion. Two equivalent axiomatizations are given, and are compared to (...) classical mereology. We provide a class of models with respect to which the non-wellfounded mereology is sound and complete. (shrink)

This is a commentary on the use of squares in elementary statistics. One sees an ubiquitous use of squares in statistics, and the analogy of "distance in a statistical sense" is teased out. We conjecture that elementary statistical theory has its roots in classical Calculus, and preserves the notion of two senses described in this paper. We claim that the senses of the differentials dx/dy hold between classical and modern infinitesimal Calculus and show how this sense becomes cashed out in (...) both models. We suggest that the commonalities of both accounts can be used to find a informational realist account of Calculus. This account involves infinitesimal Calculus as acting as an epistemic mediator that expands our conceptual space and enables us to create new measures. (shrink)

This is an excerpt from a report on the workshop on multisensory integration at the University of Toronto, on May 9th and 10th, 2014, written by Kevin Connolly, Aaron Henry, Zoe Jenkin, and Andrew MacGregor, and available at: http://networksensoryresearch.utoronto.ca/Events_%26_Discussion.html This excerpt explores the question: What is multisensory integration?

This is an excerpt from a report on the workshop on multisensory integration at the University of Toronto, on May 9th and 10th, 2014, written by Kevin Connolly, Aaron Henry, Zoe Jenkin, and Andrew MacGregor, and available at: http://networksensoryresearch.utoronto.ca/Events_%26_Discussion.html This excerpt explores the question: Do multisensory percepts involve emergent features?

This is an excerpt from a report on the workshop on multisensory integration at the University of Toronto, on May 9th and 10th, 2014, written by Kevin Connolly, Aaron Henry, Zoe Jenkin, and Andrew MacGregor, and available at: http://networksensoryresearch.utoronto.ca/Events_%26_Discussion.html This excerpt explores the question: What can multisensory processing tell us about multisensory awareness?

This is an excerpt from a report on the workshop on multisensory integration at the University of Toronto, on May 9th and 10th, 2014, written by Kevin Connolly, Aaron Henry, Zoe Jenkin, and Andrew MacGregor, and available at: http://networksensoryresearch.utoronto.ca/Events_%26_Discussion.html This excerpt explores the question: What is the purpose of multisensory integration?

This is an excerpt from a report on the workshop on multisensory integration at the University of Toronto, on May 9th and 10th, 2014, written by Kevin Connolly, Aaron Henry, Zoe Jenkin, and Andrew MacGregor, and available at: http://networksensoryresearch.utoronto.ca/Events_%26_Discussion.html This excerpt explores the question: Is language processing a special kind of multisensory integration?

This report highlights and explores five questions that arose from the multisensory integration workshop at the University of Toronto on May 9th and 10th, 2014: 1. What Is Multisensory Integration? 2. Do Multisensory Percepts Involve Emergent Features? 3. What Can Multisensory Processing Tell Us about Multisensory Awareness? 4. Is Language Processing a Special Kind of Multisensory Integration? 5. What Is the Purpose of Multisensory Integration?

Task-unrelated thought (TUT) occurs frequently in our daily lives and across a range of tasks, but we know little about how this phenomenon arises during and influences the way we communicate. Conversations also provide a novel opportunity to assess the alignment (or divergence) in TUT during dyadic interactions. We conducted a study to determine: (a) the frequency of TUT during conversation as well as how partners align/diverge in their rates of TUT, (b) the subjective and behavioral correlates of TUT and (...) TUT divergence during conversation, and (c) if perceived social group identity impacts TUT and TUT divergence during conversation. We used a minimal groups induction procedure to assign participants (N = 126) to either an ingroup, outgroup, or control condition. We then asked them to converse with one another via a computer-mediated text chat application for 10 min while self-reporting TUTs. On average, participants reported TUT about once every 2 min; however, this rate was lower for participants in the ingroup condition, compared to the control condition. Conversational pairs in the ingroup condition were also aligned more in their rates of TUT compared to the outgroup condition. Finally, we discuss subjective and behavioral correlates of TUT and TUT divergence in conversations, such as valence, turn-taking ratios, and topic shifts. (shrink)

The transplant community has faced unprecedented challenges balancing risks of performing living donor transplants during the COVID-19 pandemic with harms of temporarily suspending these procedures. Decisions regarding postponement of living donation stem from its designation as an elective procedure, this despite that the Centers for Medicare and Medicaid Services categorise transplant procedures as tier 3b (high medical urgency—do not postpone). In times of severe resource constraints, health systems may be operating under crisis or contingency standards of care. In this manuscript, (...) the United Network for Organ Sharing Ethics Workgroup explores prioritisation of living donation where health systems operate under contingency standards of care and provide a framework with recommendations to the transplant community on how to approach living donation in these circumstances.To guide the transplant community in future decisions, this analysis suggests that: (1) living donor transplants represent an important option for individuals with end-stage liver and kidney disease and should not be suspended uniformly under contingency standards, (2) exposure risk to SARS-CoV-2 should be balanced with other risks, such as exposure risks at dialysis centres. Because many of these risks are not quantifiable, donors and recipients should be included in discussions on what constitutes acceptable risk, (3) transplant hospitals should strive to maintain a critical transplant workforce and avoid diverting expertise, which could negatively impact patient preparedness for transplant, (4) transplant hospitals should consider implementing protocols to ensure early detection of SARS-CoV-2 infections and discuss these measures with donors and recipients in a process of shared decision-making. (shrink)

When people encounter potential hazards, their expectations and behaviours can be shaped by a variety of factors including other people's expressions of verbal likelihood. What is the impact of such expressions when a person also has numeric likelihood estimates from the same source? Two studies used a new task involving an abstract virtual environment in which people learned about and reacted to novel hazards. Verbal expressions attributed to peers influenced participants’ behaviour toward hazards even when numeric estimates were also available. (...) Namely, verbal expressions suggesting that the likelihood of harm from a hazard is low yielded more risk taking with respect to said hazard. There were also inverse collateral effects, whereby participants’ behaviour and estimates regarding another hazard in the same context were affected in the opposite direction. These effects may be based on directionality and relativity cues inferred from verbal likelihood expressions. (shrink)

Population-level biomedical research offers new opportunities to improve population health, but also raises new challenges to traditional systems of research governance and ethical oversight. Partly in response to these challenges, various models of public involvement in research are being introduced. Yet, the ways in which public involvement should meet governance challenges are not well understood. We conducted a qualitative study with 36 experts and stakeholders using the World Café method to identify key governance challenges and explore how public involvement can (...) meet these challenges. This brief report discusses four cross-cutting themes from the study: the need to move beyond individual consent; issues in benefit and data sharing; the challenge of delineating and understanding publics; and the goal of clarifying justifications for public involvement. The report aims to provide a starting point for making sense of the relationship between public involvement and the governance of population-level biomedical research, showing connections, potential solutions and issues arising at their intersection. We suggest that, in population-level biomedical research, there is a pressing need for a shift away from conventional governance frameworks focused on the individual and towards a focus on collectives, as well as to foreground ethical issues around social justice and develop ways to address cultural diversity, value pluralism and competing stakeholder interests. There are many unresolved questions around how this shift could be realised, but these unresolved questions should form the basis for developing justificatory accounts and frameworks for suitable collective models of public involvement in population-level biomedical research governance. (shrink)

In the conclusion to this multi-part article I first review the discussions carried out around the six essential questions in psychiatric diagnosis – the position taken by Allen Frances on each question, the commentaries on the respective question along with Frances’ responses to the commentaries, and my own view of the multiple discussions. In this review I emphasize that the core question is the first – what is the nature of psychiatric illness – and that in some manner all further (...) questions follow from the first. Following this review I attempt to move the discussion forward, addressing the first question from the perspectives of natural kind analysis and complexity analysis. This reflection leads toward a view of psychiatric disorders – and future nosologies – as far more complex and uncertain than we have imagined. (shrink)

For many decades, researchers have explored the true potential of human achievement. The expertise field has come a long way since the early works of de Groot (1965) and Chase and Simon (1973). Since then, this inquiry has expanded into the areas of music, science, technology, sport, academia and art. Despite the vast amount of research to date, the capability of study methodologies to truly capture the nature of expertise remains questionable. Some considerations include (i) the individual bias in the (...) retrospective recall of developmental activities, (ii) the ability to develop ecologically valid tasks, and (iii) difficulties capturing the influence of confounding factors on expertise. This article proposes that expertise research in electronic sports (esports) presents an opportunity to overcome some of these considerations. Esports involves individuals or teams of players that compete in video game competitions via human-computer interaction. Advantages of applying the expert performance approach in esports include (i) developmental activities are objectively tracked and automatically logged online, (ii) the constraints of representative tasks correspond with the real-world environment of esports performance, and (iii) expertise has emerged without the influence of guided systematic training environments. Therefore, this article argues that esports research provides an ideal opportunity to further advance research on the development and assessment of human expertise. (shrink)

In face of the multiple controversies surrounding the DSM process in general and the development of DSM-5 in particular, we have organized a discussion around what we consider six essential questions in further work on the DSM. The six questions involve: 1) the nature of a mental disorder; 2) the definition of mental disorder; 3) the issue of whether, in the current state of psychiatric science, DSM-5 should assume a cautious, conservative posture or an assertive, transformative posture; 4) the role (...) of pragmatic considerations in the construction of DSM-5; 5) the issue of utility of the DSM - whether DSM-III and IV have been designed more for clinicians or researchers, and how this conflict should be dealt with in the new manual; and 6) the possibility and advisability, given all the problems with DSM-III and IV, of designing a different diagnostic system. Part I of this article will take up the first two questions. With the first question, invited commentators express a range of opinion regarding the nature of psychiatric disorders, loosely divided into a realist position that the diagnostic categories represent real diseases that we can accurately name and know with our perceptual abilities, a middle, nominalist position that psychiatric disorders do exist in the real world but that our diagnostic categories are constructs that may or may not accurately represent the disorders out there, and finally a purely constructivist position that the diagnostic categories are simply constructs with no evidence of psychiatric disorders in the real world. The second question again offers a range of opinion as to how we should define a mental or psychiatric disorder, including the possibility that we should not try to formulate a definition. The general introduction, as well as the introductions and conclusions for the specific questions, are written by James Phillips, and the responses to commentaries are written by Allen Frances. (shrink)

In face of the multiple controversies surrounding the DSM process in general and the development of DSM-5 in particular, we have organized a discussion around what we consider six essential questions in further work on the DSM. The six questions involve: 1) the nature of a mental disorder; 2) the definition of mental disorder; 3) the issue of whether, in the current state of psychiatric science, DSM-5 should assume a cautious, conservative posture or an assertive, transformative posture; 4) the role (...) of pragmatic considerations in the construction of DSM-5; 5) the issue of utility of the DSM – whether DSM-III and IV have been designed more for clinicians or researchers, and how this conflict should be dealt with in the new manual; and 6) the possibility and advisability, given all the problems with DSM-III and IV, of designing a different diagnostic system. Part 1 of this article took up the first two questions. Part 2 took up the second two questions. Part 3 now deals with Questions 5 & 6. Question 5 confronts the issue of utility, whether the manual design of DSM-III and IV favors clinicians or researchers, and what that means for DSM-5. Our final question, Question 6, takes up a concluding issue, whether the acknowledged problems with the earlier DSMs warrants a significant overhaul of DSM-5 and future manuals. As in Parts 1 & 2 of this article, the general introduction, as well as the introductions and conclusions for the specific questions, are written by James Phillips, and the responses to commentaries are written by Allen Frances. (shrink)

Andrew Cullison There is one final worry about bringing emotions into a theory of moral perception that might be best drawn out with an analogy to nonmoral perception. Suppose we were beings with a slightly different nonmoral perceptual apparatus. Suppose phenomenal qualia that we typically experience when we observe objects also showed up in our cognitive life when we weren’t experiencing the presence of an object. Basically, we would periodically have apparent perceptions of objects when there were no objects. (...) Furthermore, suppose we could know that this was sometimes the case. I suspect we would feel rational pressure to be a bit more skeptical about our nonmoral judgments based on perception. One might argue that we’re kind of in that situation if our moral perception apparatus includes an emotional component. We often experience emotions when there is nothing moral about the situation we’re in, and so by analogy to the perception case, we might think that we should be a bit more skeptical about moral judgments. A possible virtue of a moral perception view that didn’t make emotions a component of the view might not have to address this worry, but if emotions are indeed an important part of Audi’s moral perception theory, then it is worth asking why we shouldn’t take ourselves to have some defeaters for moral beliefs. Aaron Bronfman The official topic of John Broome’s Rationality through Reasoning is the “motivation question”: How does the belief that you ought to do something cause you to intend to do that thing? And indeed, the parts of the book do combine to offer an answer to that question. But, as Broome himself suggests, much of the interest comes from the steps along the way. The book greatly expands and develops Broome’s earlier work, drawing rich connections throughout ðaddressing how ought figures in requirements of rationality, how reasons may be defined in terms of ought, whether there is reason to be rational, how rationality is connected to the process of reasoning, etc.Þ. This review considers Broome’s account of four main concepts in turn: ought, reasons, rationality, and reasoning. (shrink)

In face of the multiple controversies surrounding the DSM process in general and the development of DSM-5 in particular, we have organized a discussion around what we consider six essential questions in further work on the DSM. The six questions involve: 1) the nature of a mental disorder; 2) the definition of mental disorder; 3) the issue of whether, in the current state of psychiatric science, DSM-5 should assume a cautious, conservative posture or an assertive, transformative posture; 4) the role (...) of pragmatic considerations in the construction of DSM-5; 5) the issue of utility of the DSM - whether DSM-III and IV have been designed more for clinicians or researchers, and how this conflict should be dealt with in the new manual; and 6) the possibility and advisability, given all the problems with DSM-III and IV, of designing a different diagnostic system. Part I of this article took up the first two questions. Part II will take up the second two questions. Question 3 deals with the question as to whether DSM-V should assume a conservative or assertive posture in making changes from DSM-IV. That question in turn breaks down into discussion of diagnoses that depend on, and aim toward, empirical, scientific validation, and diagnoses that are more value-laden and less amenable to scientific validation. Question 4 takes up the role of pragmatic consideration in a psychiatric nosology, whether the purely empirical considerations need to be tempered by considerations of practical consequence. As in Part 1 of this article, the general introduction, as well as the introductions and conclusions for the specific questions, are written by James Phillips, and the responses to commentaries are written by Allen Frances. (shrink)

Aaron Ridley has recently attacked the study of musical ontology—an apparently fertile area in the philosophy of music. I argue here that Ridley's arguments are unsound. There are genuinely puzzling ontological questions about music, many of which are closely related to questions of musical value. While it is true that musical ontology must be descriptive of pre-existing musical practices and that some debates, such as that over the creatability of musical works, have little consequence for questions of musical value, (...) none of this implies that these debates themselves are without value. (shrink)

Aaron Ridley has recently attacked the study of musical ontology—an apparently fertile area in the philosophy of music. I argue here that Ridley's arguments are unsound. There are genuinely puzzling ontological questions about music, many of which are closely related to questions of musical value. While it is true that musical ontology must be descriptive of pre-existing musical practices and that some debates, such as that over the creatability of musical works, have little consequence for questions of musical value, (...) none of this implies that these debates themselves are without value. (shrink)

Lenn E. Goodman is professor of philosophy and as the Andrew W. Mellon professor in the humanities at Vanderbilt University in Nashville, Tennessee. Trained in medieval Arabic and Hebrew philosophy and intellectual history, his prolific scholarship has covered the entire history of philosophy from antiquity to the present with a focus on medieval Jewish philosophy. A synthetic philosopher, Goodman has drawn on Jewish religious sources (e.g., Bible, Midrash, Mishnah, and Talmud) as well as philosophic sources (Jewish, Muslim, and Christian), (...) in an attempt to construct his own distinctive theory about the natural basis of morality and justice. Taking his cue from medieval Jewish philosophers such as Maimonides, Goodman offers a new theoretical framework for Jewish communal life that is attentive to contemporary philosophy and science. (shrink)

This review of Kevin Schilbrack’s—Philosophy and the study of religions: a manifesto—is part of a review symposium featuring reviews by Andrew Irvine, J. Aaron Simmons, and James McLaughlin and a reply by Kevin Schilbrack.

The first edition was awarded the '2005 Textbook Award of the Association of University Professors of Management (Verband der Hochschullehrer fur ...

How should politicians act? When should they try to lead public opinion and when should they follow it? Should politicians see themselves as experts, whose opinions have greater authority than other people's, or as participants in a common dialogue with ordinary citizens? When do virtues like toleration and willingness to compromise deteriorate into moral weakness? In this innovative work, Andrew Sabl answers these questions by exploring what a democratic polity needs from its leaders. He concludes that there are systematic, (...) principled reasons for the holders of divergent political offices or roles to act differently. Sabl argues that the morally committed civil rights activist, the elected representative pursuing legislative results, and the grassroots organizer determined to empower ordinary citizens all have crucial democratic functions. But they are different functions, calling for different practices and different qualities of political character. To make this case, he draws on political theory, moral philosophy, leadership studies, and biographical examples ranging from Everett Dirksen to Ella Baker, Frances Willard to Stokely Carmichael, Martin Luther King Jr. to Joe McCarthy. Ruling Passions asks democratic theorists to pay more attention to the "governing pluralism" that characterizes a diverse, complex democracy. It challenges moral philosophy to adapt its prescriptions to the real requirements of democratic life, to pay more attention to the virtues of political compromise and the varieties of human character. And it calls on all democratic citizens to appreciate "democratic constancy": the limited yet serious standard of ethical character to which imperfect democratic citizens may rightly hold their leaders--and themselves. (shrink)

We all face death, but how many of us are actually ready for it? Whether our own death or that of a loved one comes first, how prepared are we, spiritually or practically? In Preparing to Die, Andrew Holecek presents a wide array of resources to help the reader address this unfinished business. Part One shows how to prepare one's mind and how to help others, before, during, and after death. The author explains how spiritual preparation for death can (...) completely transform our relationship to the end of life, dissolving our fear and helping us to feel open and receptive to letting go in the dying process. Daily meditation practices, the stages of dying and how to work with them, and after-death experiences are all detailed in ways that will be particularly helpful for those with an interest in Tibetan Buddhism and in Tibetan approaches to conscious dying. Part Two addresses the practical issues that surround death. Experts in grief, hospice, the funeral business, and the medical and legal issues of death contribute chapters to prepare the reader for every practical concern, including advance directives, green funerals, the signs of death, warnings about the funeral industry, the stages of grief, and practical care for the dying. Part Three contains heart-advice from twenty of the best-known Tibetan Buddhist masters now teaching in the West. These brief interviews provide words of solace and wisdom to guide the dying and their caregivers during this challenging time. Preparing to Die is for anyone interested in learning how to prepare for death from a Buddhist perspective, both spiritually and practically. It is also for those who want to learn how to help someone else who is dying, both during the time of illness and death as well as after death. (shrink)

How do we know right from wrong? Do we even have moral knowledge? Moral epistemology studies these and related questions about our understanding of virtue and vice. It is one of philosophy’s perennial problems, reaching back to Plato, Aristotle, Aquinas, Locke, Hume and Kant, and has recently been the subject of intense debate as a result of findings in developmental and social psychology. Throughout the book Zimmerman argues that our belief in moral knowledge can survive sceptical challenges. He also draws (...) on a rich range of examples from Plato’s Meno and Dickens’ David Copperfield to Bernard Madoff and Saddam Hussein. (shrink)

This paper argues that the dominance of linear models has led many sociologists to construe the social world in terms of a "general linear reality." This reality assumes (1) that the social world consists of fixed entities with variable attributes, (2) that cause cannot flow from "small" to "large" attributes/events, (3) that causal attributes have only one causal pattern at once, (4) that the sequence of events does not influence their outcome, (5) that the "careers" of entities are largely independent, (...) and (6) that causal attributes are generally independent of each other. The paper discusses examples of these assumptions in empirical work, consider standard and new methods addressing them, and briefly explores alternative models for reality that employ demographic, sequential, and network perspectives. (shrink)

A Physicalist Manifesto is a full treatment of the comprehensive physicalist view that, in some important sense, everything is physical. Andrew Melnyk argues that the view is best formulated by appeal to a carefully worked-out notion of realization, rather than supervenience; that, so formulated, physicalism must be importantly reductionist; that it need not repudiate causal and explanatory claims framed in non-physical language; and that it has the a posteriori epistemic status of a broad-scope scientific hypothesis. Two concluding chapters argue (...) in detail that contemporary science provides no significant empirical evidence against physicalism and some considerable evidence for it. Written in a brisk, candid and exceptionally clear style, this 2003 book should appeal to professionals and students in philosophy of mind, metaphysics and philosophy of science. (shrink)

This collection of essays is the first of its kind to focus on the relationship between composition and identity. Twelve original articles--written by internationally renowned scholars and rising stars in the field--argue for and against the controversial doctrine that composition is identity.--Provided by publisher.

Bayesian Conditionalization is a widely used proposal for how to update one’s beliefs upon the receipt of new evidence. This is in part because of its attention to the totality of one’s evidence, which often includes facts about what one’s new evidence is and how one has come to have it. However, an increasingly popular position in epistemology holds that one may gain new evidence, construed as knowledge, without being in a position to know that one has gained this evidence. (...) These are cases of KK-Failure, cases where one knows p but is not in a position to know that one knows p. This paper assumes that certain KK-Failures are possible and argues that Conditionalization goes wrong in those cases. (shrink)

This paper extends three decades of work arguing that researchers who discuss consciousness should not restrict themselves only to (adult) human minds, but should study (and attempt to model) many kinds of minds, natural and artificial, thereby contributing to our understanding of the space containing all of them. We need to study what they do or can do, how they can do it, and how the natural ones can be emulated in synthetic minds. That requires: (a) understanding sets of requirements (...) that are met by different sorts of minds, i.e. the niches that they occupy, (b) understanding the space of possible designs, and (c) understanding complex and varied relationships between requirements and designs. Attempts to model or explain any particular phenomenon, such as vision, emotion, learning, language use, or consciousness lead to muddle and confusion unless they are placed in that broader context. A methodology for making progress is summarised and a novel requirement proposed for a theory of how human minds work: the theory should support a single generic design for a learning, developing system that, in addition to meeting familiar requirements, should be capable of developing different and opposed philosophical viewpoints about consciousness, and the so-called hard problem. In other words, we need a common explanation for the mental machinations of mysterians, materialists, functionalists, identity theorists, and those who regard all such theories as attempting to answer incoherent questions. No designs proposed so far come close. (shrink)

This article seeks a better understanding of how Rudolf Steiner envisioned his reform pedagogy as a site of spiritual learning (for example through art, seasonal festivals, ritual drama, etc.), but also as a specific site intended to resist the encroaching influence of capitalism, materialism, and corporatism spreading in Germany following the First World War. Steiner’s ideas about education did not emerge in a vacuum. He was inspired by and connected with other forms of communist, socialist, and Lebensreform movements in his (...) time. Yet Steiner more actively embraced and incorporated esotericism into his pedagogical project. How did his approach differ from the other anti-capitalist and anti-materialist-inspired schools that were spreading, and what role did esotericism play in terms of developing Waldorf students? This article explores these questions and contributes to a recontextualization of both Steiner and esotericism taking place in the academy. (shrink)

The ability to improvise represents one of the highest levels of musical achievement. An improviser must master a musical language to such a degree as to be able to spontaneously invent stylistically idiomatic compositions on the spot. This feat is one of the pinnacles of human creativity, and yet its cognitive basis is poorly understood. What musical knowledge is required for improvisation? How does a musician learn to improvise? What are the neural correlates of improvised performance? In 'The Improvising Mind' (...) these questions are explored through an interdisciplinary approach that draws on cognitive neuroscience, study of historical pedagogical treatises on improvisation, interviews with improvisers, and musical analysis of improvised performances. Findings from these treatises and interviews are discussed from the perspective of cognitive psychological theories of learning, memory, and expertise. Musical improvisation has often been compared to 'speaking a musical language.' While past research has focussed on comparisons of music and language perception, few have dealt with this comparison in the performance domain. In this book, learning to improvise is compared with language acquisition, and improvised performance is compared with spontaneous speech from both theoretical and neurobiological perspectives. (shrink)

I examine the link between extensionality principles of classical mereology and the anti‐symmetry of parthood. Varzi's most recent defence of extensionality depends crucially on assuming anti‐symmetry. I examine the notions of proper parthood, weak supplementation and non‐well‐foundedness. By rejecting anti‐symmetry, the anti‐extensionalist has a unified, independently grounded response to Varzi's arguments. I give a formal construction of a non‐extensional mereology in which anti‐symmetry fails. If the notion of ‘mereological equivalence’ is made explicit, this non‐anti‐symmetric mereology recaptures all of the structure (...) of classical mereology. (shrink)

Empirical work has lately confirmed what many philosophers have taken to be true: people are ‘biased toward the future’. All else being equal, we usually prefer to have positive experiences in the future, and negative experiences in the past. According to one hypothesis, the temporal metaphysics hypothesis, future-bias is explained either by our beliefs about temporal metaphysics—the temporal belief hypothesis—or alternatively by our temporal phenomenology—the temporal phenomenology hypothesis. We empirically investigate a particular version of the temporal belief hypothesis according to (...) which future-bias is explained by the belief that time robustly passes. Our results do not match the apparent predictions of this hypothesis, and so provide evidence against it. But we also find that people give more future-biased responses when asked to simulate a belief in robust passage. We take this to suggest that the phenomenology that attends simulation of that belief may be partially responsible for future-bias, and we examine the implications of these results for debates about the rationality of future-bias. (shrink)

While moral arguments for vegetarianism have been explored in great depth, the arguments for veganism seem less clear. Although many animals used for milk and eggs are forced to live miserable lives on factory farms, it’s possible to raise animals as food resources on farms where the animals are treated more humanely and never slaughtered. Under more humane conditions, do we harm animals to use them for food? I argue that, even under humane conditions, using animals for food typically harms (...) animals by restricting their freedom. My argument raises an important question about the extent to which animals are harmed when their freedom is restricted. On one view, it is possible to restrict animals’ freedom without harming them so long as we don’t make them suffer. This view underestimates the value of freedom for animals. Even if animals aren’t made to suffer, restricting their freedom can harm them insofar as it deprives them of freely pursuing their enjoyments in life. My argument has implications for not only the ethics of using animals as food resources but also the ethics of using animals in zoos and circuses. I examine these implications and also consider what we should do with farm animals if we cease using them for food. (shrink)

This introduction to mathematical logic starts with propositional calculus and first-order logic. Topics covered include syntax, semantics, soundness, completeness, independence, normal forms, vertical paths through negation normal formulas, compactness, Smullyan's Unifying Principle, natural deduction, cut-elimination, semantic tableaux, Skolemization, Herbrand's Theorem, unification, duality, interpolation, and definability. The last three chapters of the book provide an introduction to type theory (higher-order logic). It is shown how various mathematical concepts can be formalized in this very expressive formal language. This expressive notation facilitates proofs (...) of the classical incompleteness and undecidability theorems which are very elegant and easy to understand. The discussion of semantics makes clear the important distinction between standard and nonstandard models which is so important in understanding puzzling phenomena such as the incompleteness theorems and Skolem's Paradox about countable models of set theory. Some of the numerous exercises require giving formal proofs. A computer program called ETPS which is available from the web facilitates doing and checking such exercises. Audience: This volume will be of interest to mathematicians, computer scientists, and philosophers in universities, as well as to computer scientists in industry who wish to use higher-order logic for hardware and software specification and verification. (shrink)

Readers of Spinoza's philosophy have often been daunted, and sometimes been enchanted, by the geometrical method which he employs in his philosophical masterpiece the Ethics. In Meaning in Spinoza's Method Aaron Garrett examines this method and suggests that its purpose, in Spinoza's view, was not just to present claims and propositions but also in some sense to change the readers and allow them to look at themselves and the world in a different way. His discussion draws not only on (...) Spinoza's works but also on those of the philosophers who influenced Spinoza most strongly, including Hobbes, Descartes, Maimonides and Gersonides. This controversial book will be of interest to historians of philosophy and to anyone interested in the relation between form and content in philosophical works. (shrink)

Does a commitment to mereological universalism automatically bring along a commitment to the controversial doctrine of mereological extensionalism—the view that objects with the same proper parts are identical? A recent argument suggests the answer is ‘yes’. This paper attempts a systematic response to the argument, considering nearly every available line of reply. It argues that only one approach—the mutual parts view—can yield a viable mereology where universalism does not entail extensionalism.