‘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)

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)

We notice a number of interesting overlaps between the views on personhood of Ifeanyi Menkiti and Marya Schechtman. Both philosophers distance their views from the individualistic ones standard in western thought and foreground the importance of extrinsic or relational features to personhood. For Menkiti, it is ‘the community which defines the person as person’; for Schechtman, being a person is to have a place in person-space, which involves being seen as a person by others. But there are also striking differences. (...) Schechtman sees this aspect as expanding the scope of personhood to infants and those who are severely mentally disabled. Menkiti thinks that there is a line to be drawn at some point between those humans that are persons and those who are not. We consider the cases offered in questioning how the dispute between the two views should be resolved. (shrink)

The view that an account of personal identity can be provided in terms of psychological continuity has come under fire from an interesting new angle in recent years. Critics from a variety of rival positions have argued that it cannot adequately explain what makes psychological states co-personal (i.e. the states of a single person). The suggestion is that there will inevitably be examples of states that it wrongly ascribes using only the causal connections available to it. In this paper, I (...) describe three distinct attacks on the psychological continuity theory along these lines. While I acknowledge that a number of interesting issues arise, I argue that the theory can withstand all three attacks. (shrink)

Nils-Frederic Wagner takes issue with my argument that influential critics of “transplant” thought experiments make two cardinal mistakes. He responds that the mistakes I identify are not mistakes at all. The mistakes are rather on my part, in that I have not taken into account the conceptual genesis of personhood, that my view of thought experiments is idiosyncratic and possibly self-defeating, and in that I have ignored important empirical evidence about the relationship between brains and minds. I argue that my (...) case still stands and that transplant thought experiments can do damage to rivals of a psychological continuity theory of personal identity like Marya Schechtman’s Person Life View. (shrink)

Marya Schechtman's The Constitution of Selves presented an impressive attempt to persuade those working on personal identity to give up mainstream positions and take on a narrative view instead. More recently, she has presented new arguments with a closely related aim. She attempts to convince us to give up the view of identity as a matter of psychological continuity, using Derek Parfit's story of the “Nineteenth Century Russian” as a central example in making the case against Parfit's own view, and (...) offers a form of narrative theory as a way out of the problem. In this paper I consider this new case, and argue that we should not be persuaded towards the narrative. (shrink)

The paper takes a close look at Derek Parfit’s example of the Nineteenth Century Russian in 'Reasons and Persons'. Parfit presents it as an example which illustrates the moral consequences of adopting his reductionist view of personal identity in a positive light. I argue that things turn out to be more complex than he envisages, and that it might be far more difficult to live in his world than he allows.

Eric Olson argues in The Human Animal that thought-experiments involving body-swapping do not in the end offer any support to psychological continuity theories, nor do they pose any threat to his Biological View. I argue that he is mistaken in at least the second claim.

Marya Schechtman has raised a series of worries for the Psychological Continuity Theory of personal identity (PCT) stemming out of what Derek Parfit called the ‘Extreme Claim’. This is roughly the claim that theories like it are unable to explain the importance we attach to personal identity. In her recent Staying Alive (2014), she presents further arguments related to this and sets out a new narrative theory, the Person Life View (PLV), which she sees as solving the problems as well (...) as bringing other advantages over the PCT. I look over some of her earlier arguments and responses to them as a way in to the new issues and theory. I argue that the problems for the PCT and advantages that the PLV brings are all merely apparent, and present no reason for giving up the former for the latter. (shrink)

Martha Nussbaum has argued in support of the view (supposedly that of Aristotle) that we can, through thought-experiments involving personal identity, find an objective foundation for moral thought without having to appeal to any authority independent of morality. I compare the thought-experiment from Plato’s Philebus that she presents as an example to other thought-experiments involving identity in the literature and argue that this reveals a tension between the sources of authority which Nussbaum invokes for her thought-experiment. I also argue that (...) each of her sources of authority presents further difficulties for her project. Finally, I argue that it is not clear that her thought-experiment is one that actually involves identity in any crucial way. As a result, the case she offers does not offer any satisfactory support for her view on the relation between identity, morality and thought-experiments, but we do gain some insights into what that relation really is along the way. (shrink)

African perspectives on personhood and personal identity and their relation to those of the West have become far more central in mainstream Western discussion than they once were. Not only are African traditional views with their emphasis on the importance of community and social relations more widely discussed, but that emphasis has also received much wider acceptance and gained more influence among Western philosophers. Despite this convergence, there is at least one striking way in which the discussions remain apart and (...) that is on a point of method. The Western discussion makes widespread use of thought experiments. In the African discussion, they are almost entirely absent. In this article, we put forward a possible explanation for the method of thought experiment being avoided that is based on considerations stemming from John Mbiti’s account of the traditional African view of time. These considerations find an echo in criticism offered of the method in the Western debate. We consider whether a response to both trains of thought can be found that can further bring the Western and African philosophical traditions into fruitful dialogue. (shrink)

While theories about interpreting biblical and other parables have long realised the importance of readers’ responses to the topic, recent results in social psychology concerning systematic self-deception raise unforeseen problems. In this paper I first set out some of the problems these results pose for the authority of fictional thought-experiments in moral philosophy. I then consider the suggestion that biblical parables face the same problems and as a result cannot work as devices for moral or religious instruction in the way (...) that they are usually understood to work. I examine a number of influential theories about interpretation of the parables which might appear to deflect the problems, and argue that none of them are ultimately successful in doing so. (shrink)

This article is concerned with the place counterfactual reasoning occupies in South African law, and how philosophy might be able to help the law. I point out some of the more important and unavoidable uses of counterfactual reasoning in our law. Following this I make some suggestions as to how philosophy, and especially informal logic, can be of help to the law. Finally, I make some suggestions as to how the law in turn can help philosophy.

Marya Schechtman and Grant Gillett acknowledge that my case in ‘The misunderstandings of the Self-Understanding View’ (2013) has some merits, but neither is moved to change their position and accept that the Psychological View has more going for it (and the Self-Understanding View less) than Schechtman originally contended. Schechtman thinks her case could be better expressed, and then the deficiencies of the Psychological View will be manifest. That view is committed to Locke’s insight about the importance of phenomenological connections to (...) identity, but cannot do justice to this insight and as a result fails to explain things that it should. I will argue that my case still applies, re-expression notwithstanding .. (shrink)

In this paper I discuss a set of problems concerning the method of cases as it is used in applied ethics and in the metaphysical debate about personal identity. These problems stem from research in social psychology concerning our access to the data with which the method operates. I argue that the issues facing ethics are more worrying than those facing metaphysics.

This paper is a defence of a psychological view of personal identity against the attack Peter Unger launches against it in his Identity, Consciousness and Value. Unger attempts to undermine the traditional support which a psychological criterion of identity has drawn from thought-experiments, and to show that such a criterion has totally unacceptable implications -- in particular, that it allows that persons can go out of and come back into existence. I respond to both aspects of this criticism, arguing that (...) the relevant thought-experiments (and the support they appear to offer) survive Unger's attack intact, and that he does not establish his case against intermittent existence. (shrink)

In reaching his narrative view of the self in Oneself as Another, Paul Ricoeur argues that, while literature offers revealing insights into the nature of the self, the sort of fictions involving brain transplants, fission, and so on, that philosophers often take seriously do not (and cannot). My paper is a response to Ricoeur's charge, contending that the arguments Ricoeur rejects are not flawed in the way he suggests, and that his own arguments are sometimes guilty of the very charges (...) he lays at the door of his opponents. (shrink)

In his New Essays on Human Understanding, Leibniz presents a sharp attack on Locke's theory of personal identity, Matching Locke's thought-experiments with those of his own, Leibniz seeks to show that our identity cannot rest on matters of consciousness alone-being the same person is rather a matter of the continued existence of an immaterial substance. I draw attention to some contemporary thinkers who-while eschewing the immaterial substances-are sympathetic to the kind of argument Leibniz offered. This leads to a dilemma: on (...) the face of things. we cannot be sympathetic to both Leibniz and Locke. I investigate a theory which would resolve this dilemma-giving up something which each held dear, but not everything, The resultant theory leans unpopularly more towards the side of Leibniz than Locke but can point to the authority of no less than David Wiggins. In the end, though, I argue that there is another solution to the dilemma - a solution which claims that Leibniz and Locke are arguing at cross-purposes, and that their arguments are best seen as answers to different questions. This solution still requires the giving-up of widely-held beliefs but involves significantly less cost than the alternatives. (shrink)

This is a critical review of Raymond Martin's 'Self-Concern' (1998), focusing especially on his criticism of Parfit's use of fission thought-experiments and his own 'fission rejuvenation' thought-experiment.

This is a critical review of Raymond Martin's 'Self-Concern'(1998).

Our purpose in this article is to draw attention to a connection that obtains between two dilemmas from two separate spheres: sports and the law. It is our contention that umpires in the game of cricket may face a dilemma that is similar to a dilemma confronted by legal decision makers and that comparing the nature of the dilemmas, and the arguments advanced to solve them, will serve to advance our understanding of both the law and games.

Clarke and Beck assume that approximate number system representations should be assigned referents from our scientific ontology. However, many representations, both in perception and cognition, do not straightforwardly refer to such entities. If we reject Clarke and Beck's assumption, many possible contents for ANS representations besides number are compatible with the evidence Clarke and Beck cite.

自史蒂芬·霍金(Stephen Hawking) 的暢銷科普著作《時間簡史》(以下簡稱《簡史》) 在上世紀八十年代末問世以來，至今天二十一世紀，華人基督教界就他宇宙無起點的論述仍有相當之評論，但可惜對評論未有綜合分析。評論者因寫作目的，也甚少交代霍金宇宙學的來龍去脈。故本文嘗試略述霍金宇宙學的歷史 背景及發展經過，繼而舉出華人基督教界的評論，帶出其獨特性，並提出商確的地方，以反省未來可行路向。.

Is it tautological to call an action "wrongful discrimination?" Some philosophers and political theorists answer this question in the affirmative and claim that the term "discrimination" is intrinsically evaluative. Others agree that "discrimination" usually conveys the action’s moral wrongness but claim that the term can be used in a purely descriptive way. In this paper, we present two corpus studies and two experiments designed to test whether the folk concept of discrimination is evaluative. We demonstrate that the term has undergone (...) a historical development and is nowadays no longer used purely descriptively. Further, we show that this evaluation cannot be cancelled without yielding a contradiction. We conclude that the descriptive use of "discriminatory" is a thing of the past. (shrink)

Interview of Katrin Flikschuh, Rainer Forst and Darrel Moellendorf by Valentin Beck and Julian Culp for Global Justice: Theory Practice Rhetoric.

Is the brain really a computer? In particular, is our intelligence a computational achievement: is it because our brains are computers that we get on in the world as well as we do? In this paper I will evaluate an ambitious new argument to the contrary, developed in Landgrebe and Smith (2021a, 2022). Landgrebe and Smith begin with the fact that many dynamical systems in the world are difficult or impossible to model accurately (inter alia, because it is intractable to (...) find exact solutions to the differential equations that describe them—meaning we have to approximate—but at the same time they are such that small differences in starting conditions lead to big differences in final conditions, thwarting accurate approximation). Yet we manage to survive and thrive in a world full of such systems. Landgrebe and Smith argue from these premises that it is not because our brains are computers that we get on as well as we do: instead it is because of the various ways that we dynamically couple with such systems, these couplings themselves impossible to model well enough to emulate in silico. Landgrebe and Smith thus defend a dynamical systems model in the lineage of Gibson (1979), Van Gelder (1995), and Thompson (2007), though their focus is on decisively refuting the computationalist alternatives rather than developing the positive account. Here I will defend the claim that human intelligence is genuinely computational (and that whole brain emulation and others forms of AGI may be possible) against this argument. (shrink)

Tarihte herhalde çok az soru Tanrı’nın varlığı sorusu kadar sık sorulmuş, çok yanıtlanmış ve verilen birbirinden farklı onca yanıta rağmen kesin bir sonuca ulaştırılamayıp tartışılmaya devam etmiştir. Yine de geçmişe dönüp baktığımızda bu soruya verilen farklı yanıtların farklı uygarlıkların inşa edilmesine, bazılarının yıkılmasına, acımasız çatışmalara ve her şeye rağmen kucaklaşmalara da vesile olduğunu görüyoruz. Tanrı var mı? Varsa onu nasıl bilebiliriz? Tanrı yoksa her şey mubah mı? İnsan aklı ilahi olanı kavrayabilir mi? Tanrı’nın varlığı ahlaklı olmanın şartı mı? Evren akıllı (...) bir tasarımcının imzasını taşıyor mu? Bu kitapta felsefeci William David Beck, bu sorulara tarihte verilen yanıtları ve bu konudaki tartışmaları ele alarak meselenin genel ve tarihsel bir tablosunu bize sunuyor. Platon, Aristoteles, Marcus Aurelius gibi Eski Yunan ve Roma düşünürlerinden Anselmus, Thomas Aquinas, Augustinus ve Yahudi-Hıristiyan geleneğine, Doğu’nun bilgelerine, İbni Rüşd, Fârâbî ve Gazzâlî gibi İslam düşünürlerinden Alvin Plantinga, Graham Oppy, Sam Harris, Richard Dawkins, Max Tegmark gibi Batılı modern ilahiyatçılara, bilim insanlarına ve Yeni Ateizm hareketine kadar uzanan bir çizgide “Tanrı var mı?” sorusuna verilen çeşitli yanıtları ve bu yanıtlara sunulan akılcı gerekçeleri ortaya koyarak soruya felsefece bir yanıt vermenin nasıl bir iş olduğunu da gösteriyor. (shrink)

This chapter describes how philosophical theorizing about justice can be connected with empirical research in the social sciences. We begin by drawing on some received distinctions between ideal and non-ideal approaches to theorizing justice along several different dimensions, showing how non-ideal approaches are needed to address normative aspects of real-world problems and to provide practical guidance. We argue that there are advantages to a transitional approach to justice focusing on manifest injustices, including the fact that it enables us to set (...) aside some reasonable disagreements about justice. The ‘bottom-up’ approach we advocate, for which we borrow Wolff’s term ‘real-world political philosophy’, is an empirically-informed normative analysis that attends to specific, identifiable injustices, and thus is partial, though not isolationist. We illustrate our approach by considering how different models of the nature of disability suggest different kinds of remedy for injustices faced by persons living with disabilities. We reflect on the nature and significance of vulnerabilities, and we assess the role of public opinion in normative theorizing, suggesting a particular significance for the opinions and experiences of marginalized groups. We finally reflect on the relevance of European legal and institutional frameworks for theorizing justice in Europe. (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)

This paper argues that the Fairtrade certification system represents an illuminating example of the challenge of systematically determining consumer and entrepreneurial responsibilities in our global age. In taking up the central question of what, if anything, may be called ‘just’ or ‘fair’ in Fairtrade, I more precisely argue for a two-fold thesis: that a meaningful evaluation of Fairtrade must consider both an interactional and an institutional understanding of global responsibilities to promote justice and that Fairtrade can be better defended against (...) several popular objections from the perspective of a theory that adequately differentiates between interactional responsibilities and institutional responsibilities of promoting justice under unjust circumstances. (shrink)

On a now orthodox view, humans and many other animals possess a “number sense,” or approximate number system, that represents number. Recently, this orthodox view has been subject to numerous critiques that question whether the ANS genuinely represents number. We distinguish three lines of critique – the arguments from congruency, confounds, and imprecision – and show that none succeed. We then provide positive reasons to think that the ANS genuinely represents numbers, and not just non-numerical confounds or exotic substitutes for (...) number, such as “numerosities” or “quanticals,” as critics propose. In so doing, we raise a neglected question: numbers of what kind? Proponents of the orthodox view have been remarkably coy on this issue. But this is unsatisfactory since the predictions of the orthodox view, including the situations in which the ANS is expected to succeed or fail, turn on the kind of number being represented. In response, we propose that the ANS represents not only natural numbers, but also non-natural rational numbers. It does not represent irrational numbers, however, and thereby fails to represent the real numbers more generally. This distances our proposal from existing conjectures, refines our understanding of the ANS, and paves the way for future research. (shrink)

This paper considers the question of whether chimpanzees possess at least a primitive sense of normativity: i.e., some ability to internalize and enforce social norms—rules governing appropriate and inappropriate behaviour—within their social groups, and to make evaluations of others’ behaviour in light of such norms. A number of scientists and philosophers have argued that such a sense of normativity does exist in chimpanzees and in several other non-human primate and mammalian species. However, the dominant view in the scientific and philosophical (...) literature is that psychological capacities for social norms evolved uniquely in the human lineage, after our last common ancestor with chimpanzees and bonobos. After reviewing some of the existing evidence for normative capacity in chimpanzees, I defend the thesis of chimpanzee normativity against three key theoretical objections that have been presented in the literature, each of which have played a part in motivating the dominant sceptical position. I argue that, while we still have much to learn about the nature and extent of the normative capacities of other animals, there is strong prima facie evidence for social norms and normative evaluation in chimpanzees and the main theoretical objections to chimpanzee normativity are not at all compelling. (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)

The distinction between perception and cognition frames countless debates in philosophy and cognitive science. But what, if anything, does this distinction actually amount to? In this introductory article, we summarize recent work on this question. We first briefly consider the possibility that a perception-cognition border should be eliminated from our scientific ontology, and then introduce and critically examine five positive approaches to marking a perception–cognition border, framed in terms of phenomenology, revisability, modularity, format, and stimulus-dependence.

It remains controversial whether touch is a truly spatial sense or not. Many philosophers suggest that, if touch is indeed spatial, it is only through its alliances with exploratory movement, and with proprioception. Here we develop the notion that a minimal yet important form of spatial perception may occur in purely passive touch. We do this by showing that the array of tactile receptive fields in the skin, and appropriately relayed to the cortex, may contain the same basic informational building (...) blocks that a creature navigating around its environment uses to build up a perception of space. We illustrate this point with preliminary evidence that perception of spatiotemporal patterns on the human skin shows some of the same features as spatial navigation in animals. We argue (a) that the receptor array defines a ‘tactile field’, (b) that this field exists in a minimal form in ‘skin space’, logically prior to any transformation into bodily or external spatial coordinates, and (c) that this field supports tactile perception without integration of concurrent proprioceptive or motor information. The basic cognitive elements of space perception may begin at lower levels of neural and perceptual organisation than previously thought. (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)

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)

Under what conditions would an artificially intelligent system have wellbeing? Despite its obvious bearing on the ethics of human interactions with artificial systems, this question has received little 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. While we do not claim to demonstrate conclusively that AI systems have wellbeing, we argue that our metaphysical and moral uncertainty about AI wellbeing requires us dramatically to reassess our relationship with the intelligent systems we create. (shrink)

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)

My interest in this chapter is to investigate this crossroad as applied to mental properties, considered powers. In particular, I scrutinize the possibility of taking the phenomenal property of feeling pain as a complex power or disposition. This possibility comes in handy in discussing panpsychism, the view that the ultimate elements of reality are phenomenal properties, which would ground physical properties as well.

Original title : 「充足的経験論」『思想』[Pensée], avril 1941, pp. 1–24 ; repris dans mkz 5 : 284–319. La pagination des Œuvres complètes se trouve indiquée entre parenthèses.

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.

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)

Our perception of where touch occurs on our skin shapes our interactions with the world. Most accounts of cutaneous localisation emphasise spatial transformations from a skin-based reference frame into body-centred and external egocentric coordinates. We investigated another possible method of tactile localisation based on an intrinsic perception of ‘skin space’. The arrangement of cutaneous receptive fields (RFs) could allow one to track a stimulus as it moves across the skin, similarly to the way animals navigate using path integration. We applied (...) curved tactile motions to the hands of human volunteers. Participants identified the location midway between the start and end points of each motion path. Their bisection judgements were systematically biased towards the integrated motion path, consistent with the characteristic inward error that occurs in navigation by path integration. We thus showed that integration of continuous sensory inputs across several tactile RFs provides an intrinsic mechanism for spatial perception. (shrink)

Empirical studies of the social lives of non-human primates, cetaceans, and other social animals have prompted scientists and philosophers to debate the question of whether morality and moral cognition exists in non-human animals. Some researchers have argued that morality does exist in several animal species, others that these species may possess various evolutionary building blocks or precursors to morality, but not quite the genuine article, while some have argued that nothing remotely resembling morality can be found in any non-human species. (...) However, these different positions on animal morality generally appear to be motivated more by different conceptions of how the term “morality” is to be defined than by empirical disagreements about animal social behaviour and psychology. After delving deeper into the goals and methodologies of various of the protagonists, I argue that, despite appearances, there are actually two importantly distinct debates over animal morality going on, corresponding to two quite different ways of thinking about what it is to define “morality”, “moral cognition”, and associated notions. Several apparent skirmishes in the literature are thus cases of researchers simply talking past each other. I then focus on what I take to be the core debate over animal morality, which is concerned with understanding the nature and phylogenetic distribution of morality conceived as a psychological natural kind. I argue that this debate is in fact largely terminological and non-substantive. Finally, I reflect on how this core debate might best be re-framed. (shrink)

Following recent arguments that cultural practices in wild animal populations have important conservation implications, we argue that recognizing captive animals as cultural has important welfare implications. Having a culture is of deep importance for cultural animals, wherever they live. Without understanding the cultural capacities of captive animals, we will be left with a deeply impoverished view of what they need to flourish. Best practices for welfare should therefore require concern for animals’ cultural needs, but the relationship between culture and welfare (...) is also extremely complex, requiring us to rethink standard assumptions about what constitutes and contributes to welfare. (shrink)

On a now orthodox view, humans and many other animals are endowed with a “number sense”, or approximate number system (ANS), that represents number. Recently, this orthodox view has been subject to numerous critiques, with critics maintaining either that numerical content is absent altogether, or else that some primitive analog of number (‘numerosity’) is represented as opposed to number itself. We distinguish three arguments for these claims – the arguments from congruency, confounds, and imprecision – and show that none succeed. (...) We then highlight positive reasons for thinking that the ANS genuinely represents numbers. The upshot is that proponents of the orthodox view should not feel troubled by recent critiques of their position. (shrink)

What is it for two people to think of an object, natural kind or other entity under the same mode of presentation (MOP)? This has seemed a particularly difficult question for advocates of the Mental Files approach, the Language of Thought, or other ‘atomistic’ theories. In this paper I propose a simple answer. I first argue that, by parallel with the synchronic intrapersonal case, the sharing of a MOP should involve a certain kind of epistemic transparency between the token thoughts (...) of the two thinkers. I then explain how shared words help bring about this transparency. Finally, I show how this account can be extended for thoughts expressed using demonstratives or indexicals. (shrink)