Disposition ascription has been discussed a good deal over the last few decades, as has the revisionary metaphysical view of ordinary, persisting objects known as 'fourdimensionalism'. However, philosophers have not merged these topics and asked whether four-dimensional objects can be proper subjects of dispositional predicates. This paper seeks to remedy this oversight. It argues that, by and large, four-dimensional objects are not suited to take dispositional predicates.

I address what I call the Number Issue, which is raised by our ordinary talk and beliefs about certain social groups and institutions, and I take the Hallé orchestra as my example. The Number Issue is that of whether the Hallé is one individual or several individuals. I observe that if one holds that it is one individual, one faces an accusation of metaphysical extravagance. The bulk of the paper examines the difficulty of reconciling the view that the Hallé is (...) several individuals with two prima facie plausible theses about the manner of its persistence through time. The paper is structured around some remarks made by Peter Simons about groups, and the Hallé in particular, in his 'Parts'. (shrink)

The problem analysed in this paper is whether we can gain knowledge by using valid inferences, and how we can explain this process from a model-theoretic perspective. According to the paradox of inference (Cohen & Nagel 1936/1998, 173), it is logically impossible for an inference to be both valid and its conclusion to possess novelty with respect to the premises. I argue in this paper that valid inference has an epistemic significance, i.e., it can be used by an agent to (...) enlarge his knowledge, and this significance can be accounted in model-theoretic terms. I will argue first that the paradox is based on an equivocation, namely, it arises because logical containment, i.e., logical implication, is identified with epistemological containment, i.e., the knowledge of the premises entails the knowledge of the conclusion. Second, I will argue that a truth-conditional theory of meaning has the necessary resources to explain the epistemic significance of valid inferences. I will explain this epistemic significance starting from Carnap’s semantic theory of meaning and Tarski’s notion of satisfaction. In this way I will counter (Prawitz 2012b)’s claim that a truth-conditional theory of meaning is not able to account the legitimacy of valid inferences, i.e., their epistemic significance. (shrink)

Friends of states of affairs and structural universals appeal to a relation, structure-making, that is allegedly a kind of composition relation: structure-making ?builds? facts out of particulars and universals, and ?builds? structural universals out of unstructured universals. D. M. Armstrong, an eminent champion of structures, endorses two interesting theses concerning composition. First, that structure-making is a composition relation. Second, that it is not the only (fundamental) composition relation: Armstrong also believes in a mode of composition that he calls mereological, and (...) which he takes to be the only kind of composition recognized by his philosophical adversaries, such as David Lewis. Armstrong, accordingly, is a kind of pluralist about compositional relations: there is more than one way to make wholes from parts. In this paper, I critically evaluate Armstrong's compositional pluralism. (shrink)

This book develops a novel generalization of possible world semantics, called ‘world line semantics’, which recognizes worlds and links between world-bound objects (world lines) as mutually independent aspects of modal semantics. Addressing a wide range of questions vital for contemporary debates in logic and philosophy of language and offering new tools for theoretical linguistics and knowledge representation, the book proposes a radically new paradigm in modal semantics. This framework is motivated philosophically, viewing a structure of world lines as a precondition (...) of modal talk. The author provides a uniform analysis of quantification over individuals (physical objects) and objects of thought (intentional objects). The semantic account of what it means to speak of intentional objects throws new light on accounts of intentionality and singular thought in the philosophy of mind and offers novel insights into the semantics of intensional transitive verbs. (shrink)

Numerous authors have attempted to carve an ontological distinction between events and processes on the basis of a widely noted linguistic datum involving count and mass nouns, where events are thought to be analogous to countable objects while processes to non-countable stuff. By assessing the most developed of these proposals—that of Helen Steward’s—this paper locates the motivations behind the project of carving some such distinction between events and processes, and proceeds to offer considerations toward an alternative account of processes—one whose (...) ontology is more akin to that of states than it is to stuff. (shrink)

En este trabajo, critico una estrategia argumental que ha sido utilizada para defender la concepción de la rigidez para expresiones predicativas entendida como identidad de lo designado en los distintos mundos posibles. Se trata de una estrategia basada en la suposición de que las descripciones tendrían la capacidad de designar individuos inusuales en la misma medida en que ciertas expresiones predicativas descriptivas serían capaces de designar propiedades inusuales. Señalo que esta suposición no es compatible con ciertos principios que gobiernan el (...) funcionamiento semántico de las descripciones y con la verdad intuitiva de ciertas predicaciones que las incluyen.In this paper, I criticize an argumentative strategy that has been used in the literature to defend the view according to which rigidity for predicative expressions should be understood as identity of designation across possible worlds. It is a strategy that is based on the supposition that definite descriptions could designateunusual individuals just as well as some descriptive predicative expressions are able to designate unusual properties. I point out that this presupposition is at odds with some principles governing the semantic behaviour of definite descriptions and with the intuitive truth of some predications that include them. (shrink)

Constituent ontologies maintain that the properties of an object are either parts or something very much like parts of that object. Recently, such a view has been criticized as leading to a bizarre and problematic form of substance dualism and implying the existence of impossible objects. After briefly presenting constituent and relational ontologies, I respond to both objections, arguing that constituent ontology does not yield either of these two consequences and so is not shown to be an unacceptable ontological framework.

The reflections recorded in this paper arise from three moments in the theory of definition and of conceptual analysis. The moments are: Frege’s review of Husserl’s Philosophy of Arithmetic, the discussion there of the paradox of analysis, and the division that Frege marks, ensuing upon his distinction of Sinn/sense from Bedeutung/reference, between two different conceptions of definition; Leibniz’s still serviceable account of a distinction between the clarity and the distinctness of ideas---a distinction that prompts the suggestion that the guiding purpose (...) of lexical definition is Leibnizian clarity whereas that of real definition is inseparable from the pursuit of Leibnizian distinctness; Leibniz’s speculations concerning the limit or terminus of analysis. The apparent failure of these speculations, casting doubt as it does upon the aspirations that give rise to them, points to the long-standing need to reconfigure the philosophical business of enquiry into concepts. (shrink)

The paper takes off from the problem of finding a proper content for the relation of identity as it holds or fails to hold among ordinary things or substances. The necessary conditions of identity are familiar, the sufficient conditions less so. The search is for conditions at once better usable than the Leibnizian Identity of Indiscernibles (independently suspect) and strong enough to underwrite all the formal properties of the relation.It is contended that the key to this problem rests at the (...) level of metaphysics and epistemology alike with a sortalist position. Sortalism is the position which insists that, if the question is whether a and b are the same, it has to be asked what are they? Any sufficiently specific answer to that question will bring with it a principle of activity or functioning and a mode of behaviour characteristic of some particular kind of thing by reference to which questions of persistence or non-persistence through change can be adjudicated.These contentions are illustrated by reference to familiar examples such as the human zygote, the Ship of Theseus and Shoemaker's Brown-Brownson. The first example is hostage for a mass of unproblematical cases. The problems presented by the second and third sort of examples arise chiefly (it is claimed) from an incompleteness in our conceptions of the relevant sort—the what the thing in question is. That incompleteness need not prevent us from knowing perfectly well which thing we are referring to. In the concluding section, sortalism is defended against various accusations of anthropocentrism.The paper touches on the interpretation of Heraclitus, Leibniz's theory of clear indistinct ideas, the difficulties of David Lewis's ‘perdurantist’ or stroboscopic view of persistence, four-dimensionalism, and the relation of personal identity both to experiential memory and to the particular bodily physiognomy of a subject. At some points—as in connection with the so-called Only a and b rule—the paper corrects, supplements or extends certain theses or formulations proposed in the author's Sameness and Substance Renewed (2001). (shrink)

Comparison is fundamental to the practice and subject-matter of philosophy, but has received scant attention by philosophers. This is even so in “comparative philosophy,” which literally distinguishes itself from other philosophy by being “comparative.” In this article, the need for a philosophy of comparison is suggested. What we compare with what, and in what respect it is done, poses a series of intriguing and intricate questions. In Part One, I offer a problematization of the tertium comparationis (the third of comparison) (...) by examining conceptualizations of similarity, family resemblance, and analogy, which it is sometimes argued can do without a tertium comparationis. In Part Two, I argue that a third of comparison is already required to determine what is to be compared, and insofar as that determination precedes the comparison that tertium may be called “pre-comparative.” This leads me to argue against incomparability and to show how anything can indeed be compared to anything. In Part Three, I relate my arguments to what is today commonly labelled “comparative philosophy.” Finally, I raise some questions of ontology and politics in order to demonstrate the relevance of a philosophy of comparison. (shrink)

Are a material object, such as a statue, and its constituting matter, the clay, parts of one another? One wouldn't have thought so, and yet a number of philosophers have argued that they are. I review the arguments for this surprising claim showing how they all fail. I then consider two arguments against the view concluding that there are both pre-theoretical and theoretical considerations for denying that the statue and the clay are mutual parts.

The anticipation of the typical under the assumption of the non-occurrence of the atypical is the experiential schema governing the individuation of ordinary enduring objects and their properties. Against this background, a primitive form of “if-and-only-if” consciousness is implicit in our everyday perceptual intentions. The thematization of the fact that perception operates under this proto-tentative structure occurs at the level of reflection and is expressed by defeasible judgments of the form “if p, then q, unless r,” or “if p, then (...) q provided that not-r”. Here I will argue that what is made thematic by judgments containing such restrictive clauses is the structure of unpredictability inherent in what Husserl calls the horizon of latency and, indirectly, the world as background of normality. (shrink)

I propose a minimal account of authorship that specifies the fundamental nature of the author-relation and its minimal domain composition in terms of a three-place causal-intentional relation holding between agents and sort-relative works. I contrast my account with the minimal account tacitly held by most authorship theories, which is a two-place relation holding between agents and works simpliciter. I claim that only my view can ground productive and informative principled distincitons between collective production and collective authorship.

Among those who posit properties, liberals (mostly nominalists) admit abundant, ontologically free properties, which particulars possess whenever they satisfy the same predicate and belong to the same class, however artificial. I call them “L-properties” (for “Liberal”). Some liberals also admit that some few L-properties are natural, while most of them are artificial (the same applies to the corresponding classes). Others (mostly but not only realists) commit to a more discriminating use of the category: properties are sparse, they make for the (...) objective similarities among particulars, and more importantly, they allow to analyze “objective similarity” and “class naturalness” in terms of property-possessing and sharing. They give particulars their “true nature”, and I call them “A-properties” (for “Analytical”). This article provides a defense of this second type of properties, in the particular case of sortals. To that end, a new fact is put forward: that sorts are classes which are natural not as a primitive feature, but in virtue of what the particulars which belong to them are, and which makes them _naturally belong_ to them. I then argue that this fact entails the existence of the desired type of properties, “sortal A-properties”, although leaving open the question of how they should be construed. (shrink)

The basic philosophical controversy regarding ordinary objects is: Do tables and chairs, sticks and stones, exist? This paper aims to do two things: first, to explain why how this can be a controversy at all, and second, to explain why this controversy has arisen so late in the history of philosophy. Section 1 begins by discussing why the 'obvious' sensory evidence in favor of ordinary objects is not taken to be decisive. It goes on to review the standard arguments against (...) the existence of ordinary objects – including those based on problems with causal redundancy, parsimony, co-location, sorites arguments, and the special composition question. Section 2 goes on to address what it is about the contemporary approach to metaphysics that invites and sustains this kind of controversy, and helps make evident why debates about ordinary objects lead so readily to debates in metametaphysics about the nature of metaphysics itself. (shrink)

The word ‘dignity’ is used in a variety of ways in bioethics, and this ambiguity has led some to argue that the term must be expunged from the bioethical lexicon. Such a judgment is far too hasty, however. In this article, the various uses of the word are classified into three serviceable categories: intrinsic, attributed, and inflorescent dignity. It is then demonstrated that, logically and linguistically, the attributed and inflorescent meanings of the word presuppose the intrinsic meaning. Thus, one cannot (...) conclude that these meanings are arbitrary and unrelated. This categorization and logical and linguistic analysis helps to unravel what seem to be contradictions in discourse about dignity and bioethics, and provides a hierarchy of meaning that has potential normative implications. (shrink)

This article traces the history of the concept of dignity in Western thought, arguing that it became a formal Catholic theological concept only in the late nineteenth century. Three uses of the word are distinguished: intrinsic, attributed, and inflorescent dignity, of which, it is argued, the intrinsic conception is foundational. The moral norms associated with respect for intrinsic dignity are discussed briefly. The scriptural and theological bases for adopting the concept of dignity as a Christian idea are elucidated. The article (...) concludes by discussing the relevance of this concept of dignity to the spiritual and ethical care of the dying. (shrink)

Despite its appeal and popularity, the view that membership in a natural kind is essential to an individual is unsupported by the logic of essences and has no compelling reflective support. While the view has strong intuitive and empirical support this is insufficient to establish it. There are advantages to abandoning the view that kind membership is essential to individuals. One of these advantages is that it allows for a reconfiguring of the problem of material constitution in a way that (...) removes much of the paradox. (shrink)

The paper considers and opposes the view that processes are best thought of as continuants, to be differentiated from events mainly by way of the fact that the latter, but not the former, are entities with temporal parts. The motivation for the investigation, though, is not so much the defeat of what is, in any case, a rather implausible claim, as the vindication of some of the ideas and intuitions that the claim is made in order to defend — and (...) the grounding of those ideas and intuitions in a more plausible metaphysics than is provided by the continuant view. It is argued that in addition to a distinction between events and processes there is room and need for a third category, that of the individual process, which can be illuminatingly compared with the idea of a substance. Individual processes indeed share important metaphysical features with substantial continuants, but they do not lack temporal parts. Instead, it is argued that individual processes share with substantial continuants an important property I call ‘modal robustness in virtue of form’. The paper explains what this property is, and further suggests that the category of individual process, thus understood, might be of considerable value to the philosophy of action. (shrink)

The paper argues that actions should be thought of as processes and not events. A number of reasons are offered for thinking that the things that it is most plausible to suppose we are trying to cotton on to with the generic talk of ‘actions’ in which philosophy indulges cannot be events. A framework for thinking about the event-process distinction which can help us understand how we ought to think about the ontology of processes we need instead is then developed, (...) building on some excellent work already done by philosophers working at the intersection of philosophy and linguistics. (shrink)

The normative ideals of democracy, trust and respect are under threat from the forces of populism and extremism. I argue for a recalibration of some basic ideas in the moral and social domains in which each person sees her/himself as one among others. I defend 0093The Principle of Personal Worth0094 which asserts that persons are more valuable than non-persons such as nations, religions, ethnicities, tribes, gangs, and cultures. The 0091collectivist0092 mentality denied by this principle is often held up against a (...) strongly (individualist) or atomistic one. However, these two extremes are not the only possibilities.Collectivism and identity politics link our identities to those associations and institutions with which we identify. This link is based on a confusion between qualitative and quantitative identity. Our actual (numerical) identities are determined by a combination of semantic (conceptual) and deictic (referential) factors, not by our qualitative associations.The Alt-Right combines extremes of individualism and collectivism by way of self-serving narratives that simultaneously elevate the individual over the State, and promote the agendas of specific religious, ethnic, gender and sexuality groups. These impoverished narratives support an impoverished sense of community which functions as an echo chamber for its own ideas, while rejecting those coming from beyond its boundaries. Ultimately, the task of repairing and reconstructing such narratives lies in formal education. Teachers and students need to enact forms of discourse and community which are intellectually, ethically and affectively powerful, both as tools for better teaching and learning, and as preparation for living worthwhile lives. (shrink)

It is suggested that the best way to interpret animalism is as an identity thesis saying that each of us is identical to an animal. Since there are disagreements about the nature of animal persistence, this means that animalism itself not does not explicitly propose criteria of identity for persons. It implies the negative claim that features that have nothing to do with animal persistence have nothing to do with our persistence. Thinking of it as an identity thesis also makes (...) sense of the nature of the arguments surrounding the thesis. Central to such arguments are claims about the persistence of animals and persons in certain imagined scenarios. To adjudicate such arguments, we need a secure grip on some claims about animal persistence. Often these are generated by a theory of animal persistence. In the second part of the paper, it is argued that the attempt to build such theories on the assumption that life is essential for animal existence is implausible. In the way we speak, we seem not to recognise death as the ceasing to exist of an animal. No better way to think of animals is proposed in this paper. (shrink)

The idea that two objects can coincide—by sharing all their proper parts, or matter—yet be non-identical, results in the “Problem of Coincident Objects”: in what relation do objects stand if they are not identical but share all their proper parts? One solution is to introduce material constitution. In this paper, I argue that this is ad hoc since, first, this solution cannot be generalized to solve similar problems, and, second, there are pseudo cases of coincidence that should not trigger the (...) introduction of material constitution and these cannot be distinguished in any principled way from the allegedly real cases of coincidence. (shrink)

This paper argues that the substance concept, as discussed by Aristotle in his Categories, aids us to improve our understanding of human nature. Aristotle distinguished the primary from the secondary substance, and substantial from accidental change. We explain these distinctions, their use for understanding phenomena, and discuss how we can integrate them with evolutionary explanations of human nature. For explaining of how the typical human characteristics evolved, we extend our investigations with a discussion of the concept of person. It is (...) argued that psychological attributes, used to characterize persons, are not attributes of a separate mental substance, as Cartesians believe. The concept of a person, though not a substance concept, qualifies a substance concept of a human being possessing rational powers. The latter evolved as the result of language evolution. (shrink)

It seems intuitive that in situations of perceptual recognition additional properties are represented. While much has been written about the significance of such properties for perceptual phenomenology, it is still unclear (a) what is the relation between recognition-based properties and lower-level perceptual properties, and (b) whether it is justified to classify them as kind-properties. Relying on results in cognitive psychology, I argue that recognition-based properties (I) are irreducible, high-level properties, (II) are kind properties by virtue of being sortal properties, but (...) (III) they supervene on lower-level properties and so are unlikely to be natural kind properties. (shrink)

In der ethischen und rechtlichen Debatte um den möglichen Einsatz neuer Techniken zur Genomeditierung spielt der Begriff der genetischen Veränderung eine zentrale Rolle. Während im Bereich der grünen Gentechnik intensive Debatten um seine Bedeutung geführt werden, wird dieser Umstand im Kontext gentechnischer Interventionen am Menschen weitgehend ausgeblendet. Der Aufsatz expliziert drei mögliche Bedeutungen genetischer Veränderung, namentlich: ein prozessuales, ein diachrones sowie ein klassenbezogenes Verständnis. Anhand zweier Szenarien zukünftig erwartbarer Keimbahninterventionen wird anschließend exemplarisch gezeigt, welche Konsequenzen die Begriffe für die Kennzeichnung (...) humaner Embryonen als genetisch veränderte Entitäten haben und was dies jeweils für eine ethische und rechtliche Bewertung von Keimbahninterventionen bedeuten würde. Dabei ergeben sich jedoch für jeden der Begriffe logische, konzeptionelle sowie Anwendungsprobleme, die es problematisch erscheinen lassen, Maßnahmen der Genomeditierung überhaupt unter Verweis auf einen Begriff der genetischen Veränderung rechtlich oder ethisch zu bewerten. Soll dieser Bezugspunkt dennoch aufrechterhalten werden, ist unter pragmatischen Gesichtspunkten letztlich nur ein prozessuales Verständnis genetischer Veränderung plausibel. (shrink)

What makes an object the same persisting individual over time? Philosophers and psychologists have both grappled with this question, but from different perspectives—philosophers conceptually analyzing the criteria for object persistence, and psychologists exploring the mental mechanisms that lead us to experience the world in terms of persisting objects. It is striking that the same themes populate explorations of persistence in these two very different fields—e.g. the roles of spatiotemporal continuity, persistence through property change, and cohesion violations. Such similarities may reflect (...) an underlying connection, in that psychological mechanisms of object persistence (especially relevant parts of mid-level visual object processing) may serve to underlie the intuitions about persistence that fuel metaphysical theories. This would be a way for cognitive science to join these two disparate fields, helping to explain the possible origins and reliability of some metaphysical intuitions, and perhaps leading to philosophical progress. (shrink)

Abstract: The natural lottery is a metaphor about the way luck affects the allocation of personal attributes, talents, skills, and defects. Susan Hurley has argued that it is incoherent to regard individual essential properties (IEPs) as a matter of lottery luck. The reason is that a lottery of identity-affecting properties generates the ‘non-identity problem’. For this reason among others she suggests substituting lottery luck with ‘thin luck’, i.e. luck as non-responsibility, which would allow us to coherently regard IEPs as a (...) matter of luck.I argue that we are not not-responsible for our IEPs. Therefore, the coherent range of ‘thin luck’ is not broader than that of lottery luck. Moreover, justice theorists need to be worried about the non-identity problem only to the extent that IEPs affect life prospects and it is far from evident that they do. After addressing some connected aspects of Hurley's analysis, I discuss the type of reasons that justify seeking to expand domain of justice and the ways of doing this, for instance by abandoning lottery luck. I close by suggesting, however, that if Parfit's view of ‘what matters about identity’ is correct, its application to the case of identity-affecting lotteries may prove the expansion of the domain of justice superfluous, as IEPs belong to it as it is. (shrink)

This article outlines a realist theory of aesthetic properties as higher-order manifest properties and defends it from several objections, including a possible conflict with contextualist approaches to the aesthetic properties of works of art.

It seems to be a platitude of common sense that distinct ordinary objects cannot coincide, that they cannot fit into the same place or be composed of the same parts at the same time. The paradoxes of coincidence are instances of a breakdown of this platitude in light of counterexamples that are licensed by innocuous assumptions about particular kinds of ordinary object. Since both the anticoincidence principle and the assumptions driving the counterexamples flow from the folk conception of ordinary objects, (...) the paradoxes threaten this conception with inconsistency. Typical approaches to the paradoxes reject the anticoincidence principle or some portion of the assumptions driving the counterexamples, thereby partially revising our common conception of the world around us. This essay offers a compatibilist solution to the paradoxes that sustains the folk conception of ordinary objects in its entirety. According to this solution, the various cases of distinct coincidents do not clash with the anticoincidence principle since the cases and the principle manifest different yet compatible perspectives on the world. (shrink)

According to Essentialism, an object’s properties divide into those that are essential and those that are accidental. While being human is commonly thought to be essential to Socrates, being a philosopher plausibly is not. We can motivate the distinction by appealing—as we just did—to examples. However, it is not obvious how best to characterize the notion of essential property, nor is it easy to give conclusive arguments for the essentiality of a given property. In this paper, I elaborate on these (...) issues and explore the way in which essential properties behave in relation to other related properties, like sufficient-for-existence properties and individual essences. (shrink)

The self/non-self model, first proposed by F.M. Burnet, has dominated immunology for 60 years now. According to this model, any foreign element will trigger an immune reaction in an organism, whereas endogenous elements will not, in normal circumstances, induce an immune reaction. In this paper we show that the self/non-self model is no longer an appropriate explanation of experimental data in immunology, and that this inadequacy may be rooted in an excessively strong metaphysical conception of biological identity. We suggest that (...) another hypothesis, one based on the notion of continuity, gives a better account of immune phenomena. Finally, we underscore the mapping between this metaphysical deflation from self to continuity in immunology and the philosophical debate between substantialism and empiricism about identity. (shrink)

I defend the view that ordinary objects like statues are identical to the pieces of matter from which they are made. I argue that ordinary speakers assert sentences such as ‘this statue is a molded piece of clay’. This suggests that speakers believe propositions which entail that ordinary objects such as statues are the pieces matter from which they are made, and therefore pluralism contradicts ordinary beliefs. The dominant response to this argument purports to find an ambiguity in the word (...) ‘is’, such that ‘is’ in these sentences means the same as ‘constitutes or is constituted by’. I will use standard tests for ambiguity to argue that this strategy fails. I then explore and reject other responses to the argument. (shrink)

Possible world semantics considers not only what an expression actually refers to but also what it might have referred to in counterfactual circumstances. This has proven exceptionally useful both inside and outside philosophy. The way this is achieved is by using intensions. An intension of an expression is a function that assigns to each possible world the reference of the expression in that world. However, the specific intension of terms has been subject to frequent disputes. How is one to determine (...) the intension of a term? Carnap has shown how the intension of a term depends on the type of that term. Two-dimensional semantics has shown how intensions also depend on the actual state of affairs. I will show how, in addition, intensions are no less dependent on metaphysical criteria of identity. Furthermore, I will reveal how these three factors interact to fix the exact intension of a term. In other words, I propose an outline of the overall mechanism by which intensions are being fixed. (shrink)

The neo-Fregean account of arithmetical knowledge is centered around the abstraction principle known as Hume’s Principle: for any concepts X and Y , the number of X ’s is the same as the number of Y ’s just in case there is a 1–1 correspondence between X and Y . The Caesar Problem, originally raised by Frege in §56 of Die Grundlagen der Arithmetik , emerges in the context of the neo-Fregean programme, because, though Hume’s Principle provides a criterion of (...) identity for objects falling under the concept of Number–namely, 1–1 correspondence—the principle fails to deliver a criterion of application. That is, it fails to deliver a criterion that will tell us which objects fall under the concept Number, and so, leaves unanswered the question whether Caesar could be a number. Hale and Wright have recently offered a neo-Fregean solution to this problem. The solution appeals to the notion of a categorical sortal. This paper offers a reconstruction of their solution, which has the advantage over Hale and Wright’s original proposal of making clear what the structure of the background ontology is. In addition, it is shown that the Caesar Problem can be solved in a framework more minimal than that of Hale and Wright, viz . one that dispenses with categorical sortals. The paper ends by discussing an objection to the proposed neo-Fregean solutions, based on the idea that Leibniz’s Law gives a universal criterion of identity. This is an idea that Hale and Wright reject. However, it is shown that a solution very much in keeping with their own proposal is available, even if it is granted that Leibniz’s Law provides a universal criterion of identity. (shrink)

Monists about material constitution typically argue that when Statue is materially constituted by Clay, Statue is just Clay. Pluralists about material constitution deny that constitution is identity: Statue is not just Clay. When Clay materially constitutes Statue, Clay is not identical to Statue. I discuss three familiar puzzles involving grounding, overdetermination and conceptual issues, and develop three new puzzles stemming from the connection between mereological composition and material constitution: a mereological puzzle, an asymmetry puzzle, and a structural puzzle.

If an object has a property essentially, it has that property in every possible world according to which it exists.2 If an object has a property accidentally, it does not have that property in every possible world according to which it exists. Claims about an object’s essential or accidental properties are de re modal claims, and essential and accidental properties are de re modal properties. Take an object’s modal profile to specify its essential properties and the range of its accidental (...) properties. Note that “world” as I am using it is a term of art: a modal realist believes that there are many concrete worlds, while the actualist believes in only one concrete world, the actual world. The ersatzist is an actualist who takes nonactual possible worlds and their contents to be abstracta. Essentialism is the view that objects have properties essentially, but one should distinguish deep essentialism from shallow essentialism. Deep essentialists take the (nontrivial) essential properties of an object to determine its nature— such properties give sense to the idea that an object has a unique and distinctive character, and make it the case that an object has to be a certain way in order for it to be at all.3 As Stephen Yablo (1987, 297) describes it, the essence of a thing is “an assortment of properties in virtue of which it is the entity in question,” as well as “a measure of what is required for it to be that thing.” Intuitively, on the deep essentialist picture, an ordinary object has essential properties, and it must have its essential properties in order for it to exist. On this view, objects’ essential properties are absolute, i.e., are not determined by contexts of describing (or thinking, etc.) about the object, and truths about such properties are absolute truths.4 Shallow essentialists oppose deep essentialists: they reject the view that objects can be said to have essential properties independently of contexts of description or evaluation, and so substitute context-dependent truths for the deep essentialist’s context-independent ones.. (shrink)

In my argument for subject body dualism criticized by Ludwig I use the locution of a genuine and factual difference between two possibilities. Ludwig distinguishes three interpretations of this locution. According to his analysis the argument does not go through on any of these interpretations. In my response I agree that the argument is unsuccessful if ‘factual difference’ is understood in the first way. The second reading—according to a plausible understanding—cannot be used for the argument either. The discussion of this (...) reading raises fundamental issues about different notions of propositional content. I disagree with Ludwig's diagnosis with respect to the third reading. Contrary to Ludwig's claim, there is no modal error involved if ‘factual difference’ is understood in the third way. Ludwig's objection to the argument according to its third reading can be answered by pointing out that every individual has its identity conditions necessarily. At this point fundamental and general metaphysical issues (concerning the link between identity conditions and the nature of ontological categories and between transworld and transtemporal identity) prove relevant. Finally, I make more explicit how ‘factual difference’ should be understood in the context of the argument (this is a fourth reading not considered by Ludwig) and explain how this reading strengthens the argument (compared to the third reading) by weakening its central premise. I conclude that Ludwig's attempt at undermining the argument from transtemporal identity for subject body dualism is unsuccessful. (shrink)

According to one argument for Animalism about personal identity, animal , but not person , is a Wigginsian substance concept—a concept that tells us what we are essentially. Person supposedly fails to be a substance concept because it is a functional concept that answers the question “what do we do?” without telling us what we are. Since person is not a substance concept, it cannot provide the criteria for our coming into or going out of existence; animal , on the (...) other hand, can provide such criteria. This argument has been defended by Eric Olson, among others. I argue that this line of reasoning fails to show Animalism to be superior to the Psychological Approach, for the following two reasons: (1) human animal , animal , and organism are all functional concepts, and (2) the distinction between what something is and what it does is illegitimate on the reading that the argument needs. (shrink)

By considering situations from the paradox of the twins in relativity, it is shown that time passes at different rates along different world lines, answering some well-known objections. The best explanation for the different rates is that time indeed passes. If time along a world line is something with a rate, and a variable rate, then it is difficult to see it as merely a unique, invariant, monotonic parameter without any further explanation of what it is. Although it could, conceivably, (...) be explained by the flow of something, it is better explained by the passing of a point present, which faces the problem that there is no absolute simultaneity in special relativity so that the present for an object is confined to just that object. This raises problems about presentism, eternalism, simultaneity, and special relativity. These issues are addressed first by giving accounts of presentism and eternalism and then an account of existence and times for objects relative to world lines. Finally, an analogy between a world of relativistic objects and Leibniz’s ontology of monads. (shrink)

In learning chemistry at the entry level, many learners labor under misconceptions about the subject matter that are so fundamental that they are typically never addressed. A fundamental misconception in chemistry appears to arise from an adding of existing phenomenal concepts to newly-acquired chemical concepts, so that beginning learners think of chemical entities as themselves having the very same ‘macro’ properties that we observe through the senses. Those who teach or practice chemistry never acquire these misconceptions because they were able (...) to naturally pick up the nature of the subject to begin with. But as a result, they remain unaware of the foundational assumptions and understanding that they operate with and that many beginning learners persistently lack. Thus, a systematic picture of the workings of chemical theory as they relate to observable phenomena needs to be elucidated so that the attention of chemical educators is drawn to the fundamental understanding of the subject that they already possess and that beginning learners of chemistry lack, so that beginning learners can be given the opportunity to gain an understanding of how chemical explanations are in general related to observable phenomena. The ‘layered’ way in which chemical and physical entities are related to each other within chemical theory can also be clarified in this way. To afford this picture, the philosophical concepts of supervenience and emergence are explained and applied to chemistry, as philosophers of chemistry have already done. The result provides a model for teaching chemistry that, if consistently applied, has the potential to greatly enhance fundamental understanding of the subject matter. (shrink)

I aim to show that, contrary to standard deflationary or eliminativist theories of the self, we can argue from the phenomenology of pre-reflective self-awareness for the thesis that subjects of experience are substances. The phenomenological datum of subjectivity points to a specific metaphysical structure of our experience, that is, towards the substance view rather than the bundle or the minimal self view. Drawing on modern philosophical accounts of pre-reflective self-awareness, mineness and (self-) acquaintance, I will argue that a subject is (...) aware of being the one individual who has many experiences and that it is revealed to the subject that it is the bearer of experiences and their unifier. The subject is present in pre-reflective awareness and known as the subject of experiences, and even this minimal self-awareness gives us reason to favour the substance view. Thus, one can demonstrate how the debates on the phenomenology of pre-reflective self-awareness and the metaphysics of selfhood intersect. (shrink)

The most basic divide amongst analytic metaphysicians separates realists from anti-realists. By examining certain characteristic and problematic features of these two families of views, we uncover their underlying metametaphysicalorientations, which turn out to coincide. This shared philosophical picture that underlies both the realist and the anti-realist project we call the Modern Picture. It rests on a crucial distinction between reality as it is for us and reality as it is in itself. It is argued that this distinction indeed generates the (...) realism/anti-realism dichotomy, and is also responsible for the problematic aspects highlighted earlier. We conclude by sketching an alternative philosophical picture that rejects the distinction between reality as it is for us and reality as it is in itself, which we call the Aristotelian Picture, and consider whether it is able to avoid the issues to which the Modern Picture gives rise. (shrink)

Power enthusiasts are engaged in two projects: developing a decent metaphysical account of powers, and applying that account in order to make progress on various other philosophical issues, ranging from narrowly related topics such as causality to further removed ones such as free will, reasoning, or perception. I argue that an intermediate step may be taken, one that explores ‘varieties of power’ while still staying within the realm of, of ‘pure’ powers metaphysics. Taking this intermediate step provides a much more (...) interesting basis for those involved in project, ‘applied’ powers metaphysics. I articulate four such varieties of power by exploring various dimensions in which the explanatory profile of a power can be extended. I then briefly survey how these relate to various further metaphysical issues. (shrink)

This paper aims at bringing together two debates in metaphysics that so far have been kept separate: the debate about determinism vs. indeterminism as de re modality on the one hand, and the debate about persistence on the other hand. Both debates significantly involve talk of things. We will show that working out a proper semantics for singular terms and an accompanying theory of things, motivated by considerations of quantified modal logic, can significantly further the persistence debate. We will use (...) our semantic framework to give an argument in support of the endurantist position as the best theory of persistence. (shrink)

The Doctrine of Microphysical Supervenience states that microphysical duplicates cannot differ in their intrinsic properties. According to Merricks :59–71, 1998a, Objects and persons, Oxford University Press, 2001), however, this thesis is false, since microphysical duplicates can differ with respect to the intrinsic property of consciousness. In my view, Merricks’ argument is plausible, and extant attempts to reject it are problematic. However, the argument also threatens to make consciousness appear mysterious, by implying that consciousness facts fail to be microphysically determined and (...) that there can be brute and inexplicable differences in consciousness between material things. The paper therefore develops an account that can respect the soundness of Merricks’ argument while avoiding these problematic consequences. At the heart of the proposal is the idea that consciousness can be microphysically grounded despite failing to microphysical supervene. The proposed view also has the interesting consequence that consciousness is an intrinsic property despite depending on extrinsic factors for its instantiation. (shrink)

One of the standard puzzles in ordinary-object metaphysics concerns what happens when an object and one of its undetached parts apparently begin to coincide. I distinguish two versions of this puzzle: the problem of extraordinary undetached parts and the problem of ordinary undetached parts. Then I present a novel phasalist solution to the problem of ordinary undetached parts. My solution is designed to supplement the recently-defended view that ordinary undetached parts exist but extraordinary ones do not.

Decisions about brain surgery pose existential challenges because they are often decisions about life or death, and sometimes about possible personality changes. Therefore they require rigorous neuroethical consideration. However, we doubt whether metaphysical interpretations of ambiguous statements of patients are useful for deriving ethical and legal conclusions. Particularly, we question the application of psychological theories of personal identity on neuroethical issues for several reasons. First, even the putative “standard view” on personal identity is contentious. Second, diverse accounts of personal identity (...) have been introduced into the neuroethical debate, which are incompatible. Third, the criteria for “diagnosing” the supposed changes in “identity” are ambiguous and indeterminate. Fourth, the metaphysical theories of personal identity imply highly questionable ethical and legal revisions, namely the denial of advance directives, particularly of Ulysses contracts, and, for patients with brain cancer, even therapeutic nihilism.We discuss three examples in which ideas from the personal identity debate in metaphysics are straightforwardly applied to discuss ethical issues of neurosurgery. We discuss revisions of the current medico-legal practice that have been proposed on grounds of psychological theories of personal identity. We argue that the established status quo in law and clinical practice is beneficial to the patients concerned. Furthermore, it is metaphysically neutral, which is an important principle of liberal, democratic, pluralistic societies.We recommend a pragmatic approach: empirical research on personality changes arising from brain disorders or interventions, comprehensive information about risks of personality changes, and advance directives, particularly Ulysses contracts. (shrink)