Nel nostro universo, qualunque cosa, dalla più piccola particella alla più smisurata galassia, esiste in un qualche tempo e in un qualche luogo. Ma cosa significa esistere in un qualche tempo? Il fenomeno dell’esistenza temporale gioca un ruolo fondamentale nella comprensione dell’universo e di noi stessi quali creature temporali. Eppure è un fenomeno profondamente misterioso. L’esistenza temporale è da intendersi come una relazione? Che legami ha con l’esistenza dell’ontologia? L’esistenza temporale e la localizzazione spaziale sono due fenomeni essenzialmente differenti o (...) due istanze di un’unica relazione? Tutto ciò che esiste nel tempo esiste nel tempo nello stesso modo? Tutto ciò che è nel tempo è anche nello spazio? (shrink)

Boring ontological realists hold that objects exist at times and persist over time without having substantive essences. Boring realism is a consequence of the minimal A-theory of time and the most sensible formulations of necessitism. This kind of realism is at odds with a ubiquitous realist thesis, which I call the persistenceessence link. This essay surveys some examples of the persistence-essence link and argues that it is best understood as a thesis about grounding. If we understand the link in terms (...) of grounding, there are new options for denying it—and for better understanding boring realism. (shrink)

What am I? And what is my relationship to the thing I call ‘my body’? Thus each of us can pose for himself the philosophical problems of the nature of the self and the relationship between a person and his body. One answer to the question about the relationship between a person and the thing he calls ‘his body’ is that they are two things composed of the same matter at the same time (like a clay statue and the piece (...) of clay which presently constitutes it). This is the ‘constitution view’. In this paper we give a novel overview of the literature on personal identity, the constitution view, and surrounding topics. (shrink)

The best reason to believe in temporal parts is to avoid commitment to coincidence—roughly, two objects occupying exactly the same space at exactly the same time. Most anti-coincidence arguments for temporal parts are fission arguments. Gaining some notice, however, are vagueness arguments. One goal of this paper is to clarify the way a temporal-parts ontology avoids coincidence, and another is to clarify the vagueness argument, highlighting the fact that it too is an anti-coincidence argument. The temporal-parts alternative to coincidence has (...) been challenged on the grounds that it leads to a kind of coincidence of its own. When something that is a temporal part of more than one person thinks about its future self, it must be thinking about a multitude of people. Thus, there must be many people thinking many thoughts in that region occupied by the thinking part. The third goal of this paper is debunking this attack on temporal parts. (shrink)

The philosophy problem of identity and the related problem of change go back to the ancient Greek philosophers and fascinated later figures including Leibniz, Locke and Hume. Heraclitus argued that one could not swim in the same river twice because new waters were ever flowing in. When is a river not the same river? If one removes one plank at a time when is a ship no longer a ship? What is the basic nature of identity and persistence? This book (...) introduces and asseses the philosophical puzzles posed by things persisting through time. Beginning with essential historical background to the problem it explores the following key topics and debates: mereology and identity, including 'Leibniz's Law' the constitution view of identity the 'relative identity' argument concerning identity temporary identity four-dimensionalism, counterpart and mulitiple counterpart theory supervenience the problem of temporary intrinsics the necessity of identity presentism ontological and epistemological criteria for persistence and the difference between them. Including chapter summaries, annotated further reading and a glossary this book is essential reading for anyone seeking a clear and informative introduction to and assessement of the metaphysics of identity. (shrink)

This critical notice describes some of Thomas Sattig’s book The Double Lives of Objects: An Essay in the Metaphysics of the Ordinary World and raises several critical issues about it.

Replies to critics (Janet Levin, Casey O'Callaghan, and Adam Pautz) for a book symposium on _The Phenomenal and the Representational_.

This text aims at presenting a general characterization of the act of perceiving a particular object, in a framework in which perception is conceived of as a mental and cognitive faculty having specific functions that other faculties such as imagination and memory do not possess. I introduce the problem of determining the occurrence of singular perception of a physical object, as opposed to the occurrence of other mental states or attitudes. I propose that clarifying this occurrence problem requires making explicit (...) the conditions of perceptual competence/faculty so as to explain the occurrence of each perceptual performance on the basis of the use of this competence. I argue then for a direct relational model according to which the singular perception of an object depends on a competence of connecting the perceiver directly with each target object. This model is compatible with a disjunctive approach to perception according to which each particular experience of an object corresponds either to a direct perceptual relation with this object or to the illusion of having the experience of this object. The arguments in favour of this relational model rest on the idea that the faculty of perception grounds the capacity to demonstratively identify physical objects. (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)

Puzzles about persistence and change through time, i.e., about identity across time, have foundered on confusion about what it is for ‘two things’ to be have ‘the same thing’ at a time. This is most directly seen in the dispute over whether material objects can occupy exactly the same place at the same time. This paper defends the possibility of such coincidence against several arguments to the contrary. Distinguishing a temporally relative from an absolute sense of ‘the same’, we see (...) that the intuition, ‘this is only one thing’, and the dictum, ‘two things cannot occupy the same place at the same time’, are individuating things at a time rather than absolutely and are therefore compatible with coincidence. Several other objections philosophers have raised ride on this same ambiguity. Burke, originating what has become the most popular objection to coincidence, argues that if coincidence is possible there would be no explanation of how objects that are qualitatively the same at a time could belong to different sorts. But we can explain an object’s sort by appealing to its properties at other times. Burke’s argument to the contrary equivocates on different notions of ‘cross-time identity’ and ‘the statue’. From a largely negative series of arguments emerges a positive picture of what it means to say multiple things coincide and of why an object’s historical properties explain its sort rather than vice versa – in short, of how coincidence is possible. (shrink)

This paper examines the legitimacy of two common methodologies within philosophy: thought experiments and conceptual analysis. In particular, I examine the uses to which these two methodologies have been put within modal epistemology. I argue that, although both methods can be used to reveal conditional essentialist claims (e.g. necessarily: if x is water, then x is H20), neither can be used to reveal the de re essentialists claims (e.g. x is water and x is essentially H20) they’re often taken to (...) reveal. (shrink)

E. J. Lowe; Coinciding objects: in defence of the ‘standard account’, Analysis, Volume 55, Issue 3, 1 July 1995, Pages 171–178, https://doi.org/10.1093/analys/5.

One argument for the thirder position on the Sleeping Beauty problem rests on direct inference from objective probabilities. In this paper, I consider a particularly clear version of this argument by John Pollock and his colleagues (The Oscar Seminar 2008). I argue that such a direct inference is defeated by the fact that Beauty has an equally good reason to conclude on the basis of direct inference that the probability of heads is 1/2. Hence, neither thirders nor halfers can find (...) direct support in an appeal to objective probabilities. (shrink)

Many philosophers maintain that artworks, such as statues, are constituted by other material objects, such as lumps of marble. I give an argument against this view, an argument which appeals to mereological simples.

In this paper I will argue against a view that I call foundationalism about persistence-conditions. The core of this view is that composite physical objects have their specific persistence-conditions in virtue of these conditions being fulfilled by the object’s physical constituents at various times. I will provide two arguments – the argument from the possibility of instantaneous objects and the argument from the presence of persistence-conditions – which show that this view is untenable. These arguments will also point towards a (...) more adequate understanding of what it means for an object to have certain persistence-conditions. I will expound this understanding and suggest, on its basis, an unorthodox, hylomorphist account of the persistence-conditions of objects. (shrink)

Since the revolution in philosophic method that began about a century ago, the focus of philosophic attention has been on language as used both in daily conversation and in specialized institutional activities such as science, law, and the arts. But language is an extremely complex and varied means of communication, and the study of it has been increasingly incorporated into such empirical disciplines as linguistics, psycho linguistics, and cognitive psychology. It is becoming less clear what aspects of language remain as (...) proper subjects of philosophical study, what are to be "kicked upstairs" (J. L. Austin's phrase) to the sciences. This work is a study of those logical features of language that remain central to philosophy after completion of kicking up. It conducts this study by describing similarities and differences between signs at differing levels, starting with natural events as primitive signs in the environments of their interpreters, and proceeding to pre linguistic signaling systems, elementary forms of language, and finally to the forms of specialized discourse used within social institutions. The investiga tion of comparative features requires isolating basic mental capacities that are present in the most primitive forms of organisms capable of sign interpretation. The problem then becomes one of tracing the emergence from these capacities of such categories as substance, attribute or quality, and quantity that we apply to natural languages. The study of sign levels is thus the construction of a genealogy of logical categories marking the develop ment of natural languages. (shrink)

Co-location is compatible with the doctrine of microphysical supervenience. Microphysical supervenience involves intrinsic qualitative properties that supervene on microphysical structures. Two different objects, such as Socrates and the lump of tissue of which he is constituted, can be co-located objects that supervene on different sets of properties. Some of the properties are shared, but others, such as the human-determining properties or the lump-determining properties, supervene only on one object or the other. Therefore, properties at the same location can be arranged (...) so as to constitute more than one object at the same time. (shrink)

This paper aims to make headway on two related issues—one methodological, the other substantive. The former concerns cost–benefit analyses when applied to metaphysical theory choice. The latter concerns material coincidence, i.e., multiple objects occupying the same space at the same time, such as the statue and the clay from which it’s made. The issues are entwined as many reject coincidence on the grounds that it’s costly. I argue this judgment is unjustified. More generally, I set out and defend a framework (...) for the use of cost–benefit analyses in metaphysics. The framework employs a fourfold division of pretheoretical costs and benefits, and theoretical costs and benefits. Yet these do not hold equal weight. Instead I argue that the appeal to theoretical benefits is illegitimate if the theory in question cannot first account for the relevant evidence or data, including, crucially, certain bits of pretheoretical or common knowledge. This is crucial because I not only argue that material coincidence is consistent with common sense, against what is widely believed, but that coincidence may even be a feature or implication of the common sense view. Put together, the result is that accepting an anti-coincidence theory for its putative theoretical virtues at the expense of common sense is an improper usage of the cost–benefit methodology. I instead conclude that material coincidence should be accepted with equanimity—which, after all, is free. (shrink)

How can a parcel of matter, or collection of particles, simultaneously compose three different objects, characterized by different modal properties? If the statue is gouged it still exists, but not exactly that piece of gold which originally occupied the statue’s borders, and the (mass of) gold within that piece can survive dispersal, while the piece cannot. The solution to this “problem of coinciding objects”, this paper argues, is that there is, in that space, only the statue. The properties which the (...) piece and the mass supposedly must have, to go on being, are not properties which anything can have necessarily or essentially. Not even having that origin can be essential. There is no object of which the statue is composed, though there are objects (viz., gold atoms) and a kind of stuff (viz., gold) of which it is composed. (shrink)

Mereological Universalism is the thesis that, for any disjoint Xs, the Xs automatically compose something. In his book, Material Beings, Peter van Inwagen provides an argument against Universalism that relies on the following crucial premiss: (F) If Universalism is true, then the Xs cannot ever compose two objects, either simultaneously or successively.1 I have argued elsewhere (Rea 1998) that van Inwagen’s defence of (F) fails because it relies on the false assumption that Universalism is incompatible with the view that, for (...) some Xs, what the Xs compose depends upon how the Xs are arranged. However, Matthew McGrath (1998) has recently provided a new – and in his opinion, better – formulation of van Inwagen’s argument for (F). Furthermore, he claims (contrary to what van Inwagen himself apparently thinks) that four of the ten assumptions listed at the outset of Material Beings are ‘jointly sufficient for the falsity of Universalism’. (1998: 121) Those assumptions, as they appear on page 121 of McGrath 1998, are as follows. (shrink)

Two recent papers by Michael Burke bearing upon the persistence of people and commonplace things illustrate the fact that the quest for synchronic ontological economy is likely to encourage a disturbing diachronic proliferation of entities. This discussion argues that Burke's promise of ontological economy is seriously compromised by the fact that his proposed metaphysic does violence to standard intuitions concerning the persistence of people and commonplace things. In effect, Burke would have us achieve synchronic economy (rejection of coincident entities) by (...) postulating strongly counterintuitive transtemporal claims of numerical diversity. The argument is made that the price of Burkean economy is too high. (shrink)

My wife and I and our three children may stand in various relations: being a family, being a basketball team, and so on. I show that Frege's doctrine of existence, when coupled with this simple point, easily solves the problem of material constitution and blocks the overdetermination argument for eliminativism. It does all this work while providing a plausible and clear reductionistic account of material objects. These seem to be very good reasons for accepting Frege's doctrine of existence.

Are the sculpture and the mass of gold which permanently makes it up one object or two? In this article, we argue that the monist, who answers ‘one object’, cannot accommodate the asymmetry of material constitution. To say ‘the mass of gold materially constitutes the sculpture, whereas the sculpture does not materially constitute the mass of gold’, the monist must treat ‘materially constitutes’ as an Abelardian predicate, whose denotation is sensitive to the linguistic context in which it appears. We motivate (...) this approach in terms of modal analyses of material constitution, but argue that ultimately it fails. The monist must instead accept a deflationary, symmetrical use of ‘materially constitutes’. We argue that this is a serious cost for her approach. (shrink)

The main contribution of this work is to develop the account of material constitution presented in Spatially Coinciding Objects (Ratio 24, 1982) and a series of related articles. This account was merely ‘analytical’ in that it applied generously to ‘putative’ examples of distinct entities (individuals, pluralities and masses of stuff) in the same place at the same time. The account herein is ‘critical’ in that it seeks justification for recognizing the existence of entities constituted in addition to the entities that (...) allegedly constitute them. While the earlier account used examples such as a clay statue and the clay of the statue for purposes of illustrating material constitution, the present account would consider ‘reducing’ the statue to the clay, and seeks justification for how to resist this and admit the existence of generable and perishable natural objects in general. The justification sought is ‘deep’ in the sense that (unlike the popular ‘method of cases) it does not belong to ‘descriptive’ metaphysics (in Strawson’s sense) but is sufficiently potent to counter ‘revisionist’ views. Transcendental arguments, beginning with austere assumptions of justification itself, are thereby employed. Suggestions are made about what to conclude about our own identity, which amount to supporting animalism. (shrink)

A widely held view has it that sometimes there is more than one thing in exactly the same place, as is the case, allegedly, with a clay statue. There is the statue, but there also is a piece of clay—both obviously in the same place yet distinct in virtue of their differing properties, if only modal ones. Those holding this view—pluralists—often describe the relation between such objects as one of constitution, with the piece of clay being said to constitute the (...) statue. In the first part of this paper I consider ways in which the supposed relation of constitution may be understood. I conclude that the only coherent interpretation of ‘x constitutes y’ is one on which it is presupposed that x and y are identical. While this does not, by itself, show that pluralism is false, it is something that should make us suspicious of it. In the second part of the paper I propose a simple way with the temporal and modal facts the pluralist appeals to, showing that they do not force us into accepting his puzzling doctrine. (shrink)

Event semantics takes eventualities, understood as events, processes, and states, to be basic objects in reality, not set-theoretic constructions from something else . I defend this view and argue that events, processes, and states form pairwise disjoint sorts, having the ontological status of atoms, aggregates, and mass objects, respectively. Aggregates are composed of atoms, whereas mass objects are not. Two intermediate groupings of eventualities are important in this mereological characterization: occurrences, comprising events and processes, and eventuality chunks, comprising processes and (...) states. Processes are the sort of eventualities belonging to both categories. ;Focusing on the ontology of occurrences, I argue that processes constitute events, although events are not identical to the processes that constitute them. Events and the processes that constitute them are spatio-temporally superposed, meaning that they have the same spatio-temporal parts; but spatio-temporal superposition is not tantamount to identity, because events and the processes that constitute them are modally distinct. Constitution cannot be characterized in extensional terms, for it appeals to an asymmetry in persistence conditions between the constituent parts and what they constitute . I argue that if a process constitutes an event, then there are worlds in which the process exists but the event does not. In this sense, a process can survive the destruction of the event that it constitutes. ;Eventualities are ontologically dependent particulars: necessarily they exist only if their participants exist, and their identity depends on their participants. I claim that events differ from the processes that constitute them in that they are ontologically dependent upon consequent states as well. An event is necessarily such that it cannot exist unless its consequent state exists, and its identity depends on the identity of its consequent state; an event differs in this respect from the process constituting it, which is not ontologically dependent upon a consequent state. (shrink)

Modal conventionalism is the view that two crucial forms of sameness are mind-dependent. There is no phenomenon of sameness in kind, on this view, except in virtue of our conventions for individuating nature’s kinds; there is no phenomenon of numerical sameness across time, for an individual member of some natural kind, except in virtue of our conventions for individuating such members.1 Modal conventionalism has its realist opponents. These opponents have argued, following Kripke’s lead more than thirty years ago (Kripke 1972), (...) that the boundaries of at least many of nature’s kinds are carved out by nature itself, and not by our classifi catory practices (e.g., Millikan 2000: passim, e.g., pp. 25 and 72). But they have not generally argued, with anything approaching the same vigor, that modal conventionalism is wrong in its other main claim. They have not in general argued that the world-given connections among properties, that make those properties mind-independently be membership conditions for some natural kind, at the same time make those properties mind-independently be persistence conditions for the members of the kind—properties the departure of which constitutes a ceasing-to-exist for the object that formerly had them. On the contrary, opponents of modal conventionalism have.. (shrink)

According to some philosophical views, parts of objects (either three-dimen¬sional or four-dimensional) and whole objects are distinct entities. This raises the question of how to identify objects and their parts across possible worlds. By the principle of the necessity of diversity, the distinctness of objects and their parts must be preserved across possible worlds and this, paradoxically, seems to imply that in other possible worlds objects cannot be temporally or spatially different from what they actually are. For example, it seems (...) that if Descartes and his temporal part are two distinct objects, Descartes could not have lived any shorter than he actually did. I argue that we can avoid this paradoxical conclusion once we realize that no temporal part of Descartes can be identified in other possible worlds with an independently existing person. In general, the view I defend is that parts of objects are not identical with independently existing objects across possible worlds. (shrink)