Persistence

This book presents a novel metaphysics of concrete entities. The author uses the theory developed to address three major topics in the metaphysics of concreta: fundamentality, persistence over time, and phenomenal consciousness. The book provides a new theory of what "bundles" particular property instances, or tropes, into material property bearers. The theory is based on two new ideas. The first is that the primitive nature of one sui generis monadic property called markedness bears on the bundling of other properties' tropes. (...) The second idea is that the geometric and topological features of a given markedness trope help to determine which tropes it bundles. The author argues that this new markedness bundle theory determines all property co-instantiation at the levels of both type and token, positioning markedness tropes as the fundamental concreta. The theory also explains bundling across time, yielding an advantageous account of material persistence. Finally, markedness tropes operate as de facto panprotopsychist property instances: fundamental non-consciousness tropes that uniquely explain where and why consciousness properties are exemplified. The book solidifies the case for markedness through sustained critical analysis of competing theories of fundamentality and persistence, focusing in part on their inability to account for unending mereological and plural structures. Concrete Particulars will appeal to scholars and advanced students working in metaphysics and philosophy of mind. (shrink)

Questions of persistence and change are central to metaphysics. There is almost always a role for sortal or essential properties to play in theories of persistence. However, one might reasonably be suspicious of many of the claims about sortal properties and essential properties on which so many accounts of persistence conditions rest. The aim of this paper is to think through what persistence looks like if we don't help ourselves to these assumptions. In so doing, we shall uncover a deep (...) and difficult problem when it comes to identity facts and their relation to qualitative facts. Towards the end of the paper, I sketch a potential line of response that builds upon our seeming awareness of a genuinely persisting self. (shrink)

Adrian Bardon has produced a new version of his historical introduction to the philosophy of time. Originally published in 2013, the second edition of 2024 is partly rewritten and supplemented with a more extensive discussion on our disposition to project the passage of time [...] Although the book’s title emphasizes history, most of the chapters are directed at issues in systematic philosophy of time: the realism/antirealism debate, temporal passage, temporal experience, spacetime, direction, time travel, time and free will, and the (...) temporal boundaries of the universe. (shrink)

What is time? Does it pass? Is the future open? Why do we care? Philosophy of Time: The Basics doesn’t answer these questions. It does give you an opinionated introduction to thinking a bit more deeply about them. Written in a way that assumes no philosophical background from its readers, this book looks at central topics in philosophy of time and shows how they relate to other time-related topics – from theoretical physics (without the maths!) to your own mortality. Additional (...) questions include: -/- In what way is time different to space? How long is the present? Does the Theory of Relativity show time doesn’t pass? What makes time have a direction or ‘arrow’? Can you be harmed by your own death? -/- Allowing the reader to think more deeply about time, this book begins to untangle some of the most difficult knots in all of philosophy. It also provides practical advice to prospective time-travelers. (shrink)

David Hume’s philosophical work presents the reader with a perplexing mix of constructive accounts of empirically guided belief and destructive sceptical arguments against all belief. This book reconciles this conflict by showing that Hume intended his scepticism to be remedial. It immunizes us against the influence of “unphilosophical” causes of belief, determining us to proportion our beliefs to the evidence. In making this case, this book develops Humean positions on topics Hume did not discuss in detail but that are of (...) interest to contemporary philosophers: consciousness and the unity of consciousness, temporal experience, visual spatial perception, the experience of colour and other qualia, objective experience, and spatially extended minds. It also challenges currently accepted interpretations of Hume’s views on the finite divisibility of space and time, vacuum, the duration of unchanging objects, and identity over time. It deals with criticisms of Hume that were raised by his contemporaries, notably by Thomas Reid, draws attention to earlier seventeenth‑ and eighteenth‑century work that has bearing on the interpretation of Hume’s thought, and compares Hume’s achievements with those of later nineteenth‑century psychologists and philosophers. (shrink)

Realists about tense, or A-theorists of time, believe that some of the facts that fundamentally constitute reality are tensed, and most of them seem to think that those tensed facts are to be understood as fixing the way things are, absolutely speaking, or simpliciter. But there is a simple yet powerful argument, the argument from atemporality, to the effect that realists should reject the absolutist conception of reality’s constitution by facts because, despite appearances to the contrary, that conception is in (...) fact inconsistent with realism about tense. After presenting the argument, I investigate why the relevant inconsistency has not been recognised so far and point to one possible explanation. (shrink)

Many philosophers have thought that our folk, or pre-reflective, view of persistence is one on which objects endure. This assumption not only plays a role in disputes about the nature of persistence itself, but is also put to use in several other areas of metaphysics, including debates about the nature of change and temporal passage. In this paper, we empirically test three broad claims. First, that most people (i.e. most non-philosophers) believe that, and it seems to them as though, objects (...) persist by enduring rather than perduring. Second, that most people have a view of change on which enduring but not perduring objects count as changing. Third, that one reason why the folk represent time as dynamical is because it seems to them, and they believe that, they endure through time. We found no evidence to support these claims. While there are certainly plenty of ‘folk’ endurantists in the population we tested, there are also plenty of ‘folk’ perdurantists. We did not find robust evidence that a majority of people believed that, or it seemed to them as though, objects endure rather than perdure. We conclude that many arguments in favour of endurantism that appeal to folk beliefs about, or experiences of, persisting objects and change rest on views about those beliefs and experiences that are empirically unsupported. There is no evidence to suggest that endurantism is the folk friendly view of persistence, and so we should stop treating it as such without argument. (shrink)

McTaggart's argument that time is unreal was agreed by few philosophers, but it opened up a great split among twentieth‐century philosophers of time over the question of whether time must form an A‐series (“A‐theory”) or whether a B‐series suffices for the reality of time (“B‐theory”). This chapter discusses the most prominent twentieth‐century arguments in favor of the negative responses to questions that were seen to be especially important in deciding this matter. It begins with the puzzle of change because if (...) one accepts that temporal predicates indeed any predicates that can report change are in fact relations, then the appeal of the four pillars of the B‐theory becomes apparent. The pillars of B‐theory are (i) any conception of temporal passage as the gain and loss of non‐relational, tensed properties is incoherent; (ii) the underlying, logical structure of tensed language is tenseless; (iii) eternalism; and (iv) temporal experience is explainable B‐theoretically. (shrink)

This piece is a contribution to a book symposium on Fabrice Correia and Sven Rosenkranz's _Nothing to Come: A Defense of the Growing Block Theory of Time_. I start by considering one of the main objections that has been raised against the Growing Block Theory, namely, the Epistemic Objection, together with Correia and Rosenkranz's response to that objection. This leads to a question about whether Correia and Rosenkranz’s view is a Four-Dimensionalist version of the Growing Block Theory or a Three-Dimensionalist (...) version of the theory. I argue that there are three possible ways Correia and Rosenkranz might respond to this question, and I raise several worries for each of those ways. Then I offer some free advice about how I think Correia and Rosenkranz ought to respond to the question. (shrink)

The quantum symmetrization procedure that is used to handle systems of identical quantum particles brings into question whether the elementary constituents of matter, such as electrons, have the fundamental characteristics of persistence and reidentifiability that are attributed to classical particles. However, we presently lack a coherent conception of matter composed of entities that do not possess one or both of these fundamental characteristics. We also lack a clear a priori understanding of why systems of identical particles (as opposed to non-identical (...) particles) require special mathematical treatment, and this only in the quantum mechanical (as opposed to classical mechanical) setting. -/- Here, on the basis of a conceptual analysis of a recent mathematical reconstruction of the quantum symmetrization procedure, we argue that the need for the symmetrization procedure originates in the confluence of identicality and the active nature of the quantum measurement process. We propose a conception in which detection-events are ontologically primary, while the notion of individually persistent object is relegated to merely one way of bringing order to these events. On this basis, we outline a new interpretation of the symmetrization procedure which gives a new physical interpretation to the indices in symmetrized states and to non-symmetric measurement operators. (shrink)

McTaggart’s paradox and his A-theory and B-theory are basic notions in the contemporary philosophy of time. It is well known that the paradox was introduced by McTaggart’s paper called “The Unreality of Time” published in 1908, so that it has a one-hundred-year history. As for A-theory and B-theory, in contrast, McTaggart himself didn’t consider both of them at all. The notions of A-theory and B-theory came much later, 60 years after the paradox. Moreover, they had not been as popularized as (...) they are today until quite recently, at least after the 1990s. This paper aims to trace the origin of the notions of A-theory and B-theory and show how the debates behind them, especially objections to “spatialising time,” form the notions. (shrink)

This book critically assesses arguments for the existence of the God of classical theism, develops an innovative account of objects’ persistence, and defends new arguments against classical theism. The authors engage the following classical theistic proofs: Aquinas’s First Way, Aquinas’s De Ente argument, and Feser’s Aristotelian, Neo-Platonic, Augustinian, Thomistic, and Rationalist proofs. The authors also provide the first systematic treatment of the ‘existential inertia thesis’. By connecting the thesis to relativity theory and recent developments in the philosophy of physics, and (...) by developing a variety of novel existential-inertia-friendly explanations of persistence, they mount a formidable new case against classical theistic proofs. Finally, they defend new arguments against classical theism based on abstract objects and changing divine knowledge. The text appeals to students, researchers, and others interested in classical theistic proofs, the existence and nature of God, and the ultimate explanations of persistence, change, and contingency. (shrink)

John Steele interviewed Paul Davies on the subject of time. In that interview Davies stated that time is not a flow, which is correct. His reasoning for that conclusion, however, was flawed, based on a confused version of the flowing river analogy with time. A correct version of the analogy is presented, followed by an analysis of Davies’ argument. A detailed explanation is presented of the intrinsic nature of the type of change that time is. Transdisciplinary methodology based on isomorphies (...) is used to bring forth the nature of temporal change, and reveal why time is not a flow. (shrink)

In this paper I argue that in several passages Plato sympathizes with the following view: sensible particulars undergo continuous, pervasive physical change; as a consequence, where there seems to be one and the same object which is identical through time, there is in fact a succession of impermanent objects numerically distinct from each other but similar to each other. I illustrate the difference between this view—which invites interesting comparisons with modern and contemporary theories—and other, superficially similar views which Plato criticizes. (...) I also suggest that this view might contribute to explaining Plato’s contention that sensible particulars lack being and are confined to coming to be. Finally, I show that my interpretation was well attested in antiquity; and I put forward the hypothesis that part of the aim of certain Aristotelian claims about substance might be to correct Plato in this respect. (shrink)

Any effort to specify identity conditions for corporations faces significant challenges. Corporations are amorphous. Nature draws no hard lines defining where they start or stop, whether in space or time. Corporations are also frustratingly dynamic. They often change the most basic aspects of their composition by exchanging parts, splitting and merging, changing ownership, and reworking fundamental internal operations. -/- Even so, we apply corporate identity conditions all the time. Both law and common intuition recognize that corporations do things—like pollute environments (...) or mislabel addictive medications—that call for judgment. Imposing judgment on corporations presupposes some implicit view of corporate identity that allows us to say, “This corporation that we now judge is the same one that misbehaved.” -/- This chapter draws on evidence from court decisions and experimental philosophy to unpack the fundamentally different visions of corporate identity implicitly encoded in law and in common intuition. The discrepancies suggest important lessons for lawmakers and corporate managers. (shrink)

The phenomenon of weakness of will – not doing what we perceive as the best action – is not recognized by neoclassical economics due to the axiomatic assumptions of the revealed preference theory (RPT) that people do what is best for them. However, present bias shows that people have different preferences over time. As they cannot be compared by the utility measurements, economists need to normatively decide between selves (short- versus long-term preferences). A problem is that neoclassical economists perceive RPT (...) as value-free and incorporate present bias within the economic framework. The axiomatic assumption that people do what is best for them leads to theoretical and practical dilemmas. This work examines weakness of will to resolve some shortcomings of RPT. The concept of intention is used to provide multiple self conception with the framework to decide between selves, which had not been done before. The paper concludes that individuals should not always follow their revealed preferences (desires) but the intentions (reason) because the latter indicates what people really want. (shrink)

Time passes iff: P and then Q, for any tensed P and Q. Mary sits; and then she stands. The view—dynamic succession—accommodates the intuition that time passes when events change their A-characteristics: my next birthday is 11 months future and then 10 months future and so on. The view implies an intimate connection between passage, persistence, and change. Persistence and change both presuppose passage. The view charts a path between A-theories (invoking past, present, future) and B-theories (invoking succession). A-theories of (...) passage fail to uncover what makes the passage process go (i.e., succession). B-theories negate tense and therefore mistakenly treat succession as a static relation. Genuine succession makes it so that what comes after replaces what came before. (shrink)

In the museum context, curators and conservators often play a role in shaping the nature of contemporary artworks. Before, during and after the acquisition of an art object, curators and conservators engage in dialogue with the artist about how the object should be exhibited and conserved. As a part of this dialogue, the artist may express specifications for the display and conservation of the object, thereby fixing characteristics of the artwork that were previously left open. This process can make a (...) significant difference to the visual appearance of the work, the nature of the audience's experience, and how the work should be interpreted. I present several case studies in which the nature of the artwork has been shaped by such dialogues, and discuss principles for resolving cases in which there is a conflict between instructions specified by the artist and those adopted by the museum. (shrink)

Virtually everyone who has advanced an ontology of art has accepted a constraint to the effect that claims about ontology should cohere with the sort of appreciative claims made about artworks within a mature and reflective version of critical practice. I argue that such a constraint, which I agree is appropriate, rules out a one-size-fits-all ontology of contemporary visual art (and thus of visual art in general). Mature critical practice with respect to contemporary art accords artists a significant degree of (...) stipulative authority regarding the features and boundaries of their works. This results in ontological variation among visual artworks. Any claim to the effect that all works belong to the same ontological category will thus come out false or uninformative. Interesting, substantive claims about ontological status can be made only in relation to specific works; that is, we must consider the ontological status of each contemporary artwork individually. The only general ontological claim that can be made about visual artworks (and also about artworks in other forms) is that they belong to the sort of thing that artists create. But this is not a substantive ontological claim. (shrink)

I argue that in Plato’s Parmenides 141a6–c4, things in time come to be simultaneously older and younger than themselves because a thing’s past and present selves are both real. As a result, whatever temporal relation is predicated of any of these past and present selves is true of the thing in question. Unlike other interpretations, this reading neither assumes that things in time have to replace their parts, nor that time is circular. I conclude that the passage is committed to (...) a conception of the ongoing present and a rejection of presentism and endurantism in favour of a growing universe theory and perdurantism. (shrink)

How might we change ourselves without ending our existence? What could we become, if we had access to an advanced form of bioengineering that allowed us dramatically to alter our genome? Could we remain in existence after ceasing to be alive? What is it to be human? Might we still exist after changing ourselves into something that is not human? What is the significance of human extinction? Steven Luper addresses these questions and more in this thought-provoking study. He defends an (...) animalist account, which says that we are organisms, but claims that we are also material objects. His book goes to the heart of the most complex questions about what we are and what we might become. Using case studies from the life sciences as well as thought experiments, Luper develops a new way of thinking about the nature of life and death, and whether and how human extinction matters. (shrink)

The grounding problem is related to the puzzle of numerically distinct spatiotemporally coincident objects. Suppose Lumpl –a lump of clay– and Goliath – the statue – are created and later destroyed, simultaneously. They would share all of their physical and spatiotemporal properties and relations. But, Goliath and Lumpl have different modal and sortal properties, which would suggest they are distinct entities, while at the same time entirely co-located. This issue creates a puzzle and raises the question of how two distinct (...) objects can be entirely colocated. Thus, on the one hand, monists (opponents of coincident objects) argue that even though we have given that thing two different names, we should keep in mind that Lumpl and Goliath, for as long as they exist, are entirely similar in terms of their physical and spatiotemporal structures. On the other hand, however, the lump and the statue have different properties. So, pluralists claim that based on Leibniz‘s law, Lumpl and Goliath would be distinct coincident objects. Monists have challenged the possibility and plausibility of the occurrence of coincident objects by the grounding problem: they think that if we accept pluralism, we have to deal with the thorny problem of what grounds the alleged modal differences between Lumpl and Goliath, given that they are similar in all their physical and spatiotemporal aspects. Some monists suspect that pluralists will not be able to find plausible grounds by means of which to explain Lumpl and Goliath‘s modal (and other) differences, and therefore conclude that the grounding problem is a compelling reason to reject pluralism as an untenable approach towards the puzzle of coincident objects. In this thesis, I attempt to show that the grounding problem, contrary to the false advertisement of some monists, does not seriously threaten the possibility and plausibility of the pluralism concerning the existence of numerically distinct spatiotemporally coincident objects. Underlining the plausibility and possibility of the pluralists‘ position, I specify most parts of this thesis as an investigation into how the grounding problem can be solved in support of pluralism. Various solutions to this problem have been proposed by pluralists from different standpoints. In general, most of these significant solutions, based upon general strategies they follow, can be classified into these two categories: the solutions which appeal to the supervenience relations (supervenience-based solutions), and the solutions which take primitivist approaches (primitivist strategies). My research proposes to take up the validity of the aforementioned strategies, and I assess them in relation to the pluralists‘ ability to solve the grounding problem. I argue that both supervenience-based solutions and the some of primitivist strategies – including the modal plenitude, sortal, and identity-based primitivism – are not winning strategies to settle the grounding problem. Considering the point mentioned, I put forward a new account of the primitivist solution to the grounding problem based on the Aristotelian notion of essence which I call ‗essential primitivism‘. I argue that the primitive essences of coincident objects can properly ground the modal and sortal properties making coincident objects distinct. (shrink)

Cities are mysteriously attractive. The more we get used to being citizens of the world, the more we feel the need to identify ourselves with a city. Moreover, this need seems in no way distressed by the fact that the urban landscape around us changes continuously: new buildings rise, new restaurants open, new stores, new parks, new infrastructures… Cities seem to vindicate Heraclitus’s dictum: you cannot step twice into the same river; you cannot walk twice through the same city. But, (...) as with the river, we want and need to say that it is the same city we are walking through every day. It is always different, but numerically self-identical. How is that possible? What sort of mysterious thing is a city? The answer, I submit, is that cities aren’t things. They are processes. Like rivers, cities unfold in time just as they extend in space, by having different temporal parts for each time at which they exist. And walking though one part and then again through another is, literally, walking through the same whole. (shrink)

As a growing area of research, the philosophy of time is increasingly relevant to different areas of philosophy and even other disciplines. This book describes and evaluates the most important debates in philosophy of time, under several subject areas: metaphysics, epistemology, physics, philosophy of language, philosophy of mind, cognitive science, rationality, and art. -/- Questions this book investigates include: Can we know what time really is? Is time possible, especially given modern physics? Must there be time because we cannot think (...) without it? What do we experience of time? How might philosophy of time be relevant to understanding the mind-body relationship or evidence in cognitive science? Can the philosophy of time help us understand biases toward the future and the fear of death? How is time relevant to art – and is art relevant to philosophical debates about time? Finally, what exactly could time travel be? And could time travel satisfy emotions such as nostalgia and regret? -/- Through asking such questions, and showing how they might be best answered, the book demonstrates the importance philosophy of time has in contemporary thought. Each of the book’s 10 chapters begins with a helpful introduction and ends with study questions and an annotated list of further readings. This and a comprehensive bibliography at the end of the book prepare the reader to go further in their study of the philosophy of time. (shrink)

In this paper, I assess the analysis of vagueness of objects in terms of the theory of constitution with respect to the notion of vague identity. Some proponents of the constitution theory see it as an advantage of their account that analysing the spatial and temporal vagueness of objects in terms of the relation of vague constitution avoids commitment to vague identity, which is seen as a controversial notion. I argue that even though the constitution theory may plausibly be applied (...) to the phenomenon of vague boundaries, it fails to account fully for other cases of spatial and temporal vagueness. There are what I call ‘mid-extension’ vagueness cases, in which the tools of the constitution theory applied in the analysis of boundary vagueness are insufficient to avoid commitment to vague identity. (shrink)

Prior left us with a problem which he stated in the following way: ‘Very roughly, it would seem that countable “things” are made or grow from bits of stuff, or from other countable “things”, that are already there. The precise logic of this process hasn’t been worked out yet, and until it has been, it seems likely that any tensed predicate logic can only be provisional in character.’ Although I disagree with much of the philosophy of time underlying Priorean tense (...) logic, the problem of presenting a coherent view of ‘countable things’ and ‘bits of stuff’ within a framework accommodating temporal reference and modal expressions along broadly the lines Prior proposed remains an interesting one. The present paper sketches a general framework within which more specific questions raised by this general issue can be addressed, and makes a number of tentative suggestions without, however, proceeding so far as to settle on and develop a definite logical theory. (shrink)

The life-long correspondence of David K. Lewis, one of the most influential philosophers of the twentieth century, reveals the development, breadth, and depth of his philosophy in its historical context. The first of this two volume collection of letters focuses on his contributions to metaphysics, arguably where he made his greatest impact.

In this paper, I will argue that we need to consider the ‘change- makers’ if we want to provide a comprehensive theory of persistence. The classical theories of persistence, endurantism and perdurantism in all their flavours, are content with avoiding the looming contradiction in the context of Leibniz’s Law. They do not account for how change is brought about. I argue that this is not sufficient to constitute a theory of persistence and I will introduce produrantism as a new access (...) towards a comprehensive approach. (shrink)

When we think about ethics, we normally focus on a particular sort of agent: the individual person. Some philosophers have argued that we should rethink the limits of what counts as an ethically relevant unit of agency by expanding outward, and claiming that groups of people can have normative reasons for action. In this paper, I explore whether we can go in the other direction. Are there sub‐personal beings who count as agents with their own reasons for action? In particular, (...) might the temporal parts of persons, beings like “me‐in‐my‐twenties,” be thought of as normative agents? This idea, I argue, has deep attractions, and deep, but surmountable, challenges. And if we do accept this idea, I argue, this can indirectly help to support the case for thinking that groups can have reasons for action. (shrink)

This paper develops and defends a new account of B-theoretic endurantism and a new account of the metaphysics of the quantum state, and highlights the parallels between the considerations that motivate them. These new accounts are both fragmentalist, in the sense that they follow Fine (2005) in invoking a symmetric coordination relation between facts, such that facts that are pairwise incompatible (like Hugh's being happy and Hugh's being sad) can both obtain provided that they are not related by this relation. (...) However, while Fine allows that fragments can be logically incoherent— P can obtain in one fragment while not-P obtains in another—the fragmentalist accounts defended here are motivated even if we insist on logical coherence between fragments. (shrink)

Hawley begins by answering the question of why we ought to care about how things persist. We care about the persistence of many things, such as ourselves, our relatives and friends, and our possessions. The inquiry should be metaphysical and not, say, legal, because the law assumes, without inquiry, answers to metaphysical questions. Could one survive entering irreversible coma? Although the law may consider biological facts, the question is about a relation, if any, between those facts and personhood. Impatient people, (...) intuiting that such questions have no answers, insist they must be resolved by convention. But Hawley doubts that a mind possesses magical powers enabling it to create or destroy physical things with words or thoughts. To raise the issue of mind-independent objects is to enter metaphysics. (shrink)

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)

Stephen Mumford has argued that dispositionalists ought to be endurantists because perdurantism, by breaking down persisting objects in sequences of static discrete existents, is at odds with a powers metaphysics. This has been contested by Neil Williams who offers his own version of ‘powerful’ perdurance where powers function as links between the temporal parts of persisting objects. Weighing up the arguments given by both sides, I show that the profile of ‘powerful’ persistence crucially depends on how one conceptualises the processes (...) involved in the manifestation of powers. As this turns out not to be determined per se by subscribing to some view labelled ‘powers view’, further discussion is needed as to what processes are and to what kind of process theory a powers metaphysics should commit itself in order to be convincing. I defend the claim that dispositionalism is best combined with a version of process ontology that is indeed incompatible with a perdurantist analysis of persistence. However, I argue that this does not imply that dispositionalists ought to be endurantists. (shrink)

This book is about matter. It involves our ordinary concept of matter in so far as this deals with enduring continuants that stand in contrast to the occurrents or processes in which they are involved, and concerns the macroscopic realm of middle-sized objects of the kind familiar to us on the surface of the earth and their participation in medium term processes. The emphasis will be on what science rather than philosophical intuition tells us about the world, and on chemistry (...) rather than the physics that is more usually encountered in philosophical discussions. It is the everyday science of matter characterised by differences of chemical substance that constitutes individuated macroscopic bodies of geological and biological complexity—the continuous matter of macroscopic theory and described by mass terms. -/- The discussion might be characterised as descriptive metaphysics, being content, to paraphrase Strawson’s use of the term, to describe the structure of our scientific thought about the actual world. The method in the central chapters dealing with the nature of matter will be to pursue key steps in the historical development of scientific thought about chemical substance and related concepts with a view to tracing the emergence of a systematic ontological interpretation. Aristotle’s and the Stoics’ discussions of elements and mixtures, based on a continuous view of matter, bear some resemblance to modern, macroscopic conceptions and therefore have some interest as precursors to modern views as well as being of conceptual interest in their own right. Some of the issues they raised are still reflected in modern discussions, despite the considerable increase in complexity of the subject. Other ideas, such as the intimate connection between what modern science distinguishes as substance and phase, maintained their grip on the understanding of matter until the end of the eighteenth century. These are some of the important aspects of the properties of matter that have been neglected by linguistic concerns that have dominated the recent study of mass terms and which the present study seeks to redress. It will be of interest to see how the bounds of possibility are delimited by the laws governing the appropriate use of concepts refined for the purpose of describing the behaviour of matter. But the concern with modality will not stretch to venturing into the realms of metaphysical possibility governed by philosophical speculation about individual essences and underlying natures. -/- Like many contemporary discussions of material objects, this one relies heavily on mereology. Unlike several such discussions, this one adheres to the classical principles of mereology governing the usual dyadic relations of part, overlapping, etc. and the operations of sum, product and difference. These principles apply to the mereological structure of regions of space, intervals of time, processes and quantities of matter. Material objects that gain and lose matter are not understood to gain and lose parts and don’t call for a modification of the classic dyadic mereological relations to triadic relations with the introduction of a third term referring to time. Rather, a distinction is drawn between quantities of matter, which don’t gain or lose parts over time, and individuals, which are typically constituted of different quantities of matter at different times. The proper treatment of the temporal aspect of the features of material objects is a central issue in this book. The topics falling under this heading are addressed by investigating the conditions governing the application of predicates relating time and other entities. Of particular interest here are relations between quantities of matter and times expressing substance kind, phase and mixture. (shrink)

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)

Although they are continually compositionally reconstituted and reconfigured, organisms nonetheless persist as ontologically unified beings over time – but in virtue of what? A common answer is: in virtue of their continued possession of the capacity for morphological invariance which persists through, and in spite of, their mereological alteration. While we acknowledge that organisms‟ capacity for the “stability of form” – homeostasis - is an important aspect of their diachronic unity, we argue that this capacity is derived from, and grounded (...) in a more primitive one – namely, the homeodynamic capacity for the “specified variation of form”. In introducing a novel type of causal power – a „structural power‟ – we claim that it is the persistence of their dynamic potential to produce a specified series of structurally adaptive morphologies which grounds organisms‟ privileged status as metaphysically “one over many” over time. (shrink)

This chapter discusses the retroactivity problem and how it arises when the idea that events occurring after a person’s life can harm that person is pursued. The common objection to this dilemma is the “no subject” type of response. The retroactivity problem is the result of making several assumptions jointly, many of which are initially plausible but none of which are actually defended. The first of these assumptions is referred to as Worse-Off, which states that an event harms a person (...) only if it makes him worse off than he would have been if the event had not occurred. The second assumption, implied by the first, is referred to as Welfare, which states that an event harms a person only if it makes it the case that his welfare is lower than it would have been if the event had not occurred. (shrink)

A paper exploring what we can learn about part/whole by focusing on the differences in the existence conditions of fusions and ordinary things, rather than the differences in their persistence conditions.

The thesis revolves around the following questions. What is time? Is time tensed or tenseless? Do things endure or perdure, i.e. do things persist by being wholly present at many times, or do they persist by having temporal parts? Do causes bring their effects into existence, or are they only correlated with each other? Within a realist approach to metaphysics, the author claims that the tensed view of time, the endurance view of persistence, and the production view of causality naturally (...) combine into what is called the dynamic view of temporal reality, and that the tenseless view of time, the perdurance view of persistence, and the correlation view of causality naturally combine into what is called the static view of temporal reality. The author argues in favour of a dynamic view. During the discussion a number of metaphysical problems are addressed. First, it is argued that the charges that the dynamic view is contradictory, made by J.M.E. McTaggart and David Lewis, are viciously circular. Secondly, it is argued that the static view cannot account for change, and deprives metaphysics of essential means to provide natural explanations to empirical phenomena. Thirdly, the author presents a novel account of the nature of necessary causal production. He suggests that the traditional conception of causes as essentially being external to the effects should be abandoned, and that causal production instead should be explicated in terms of reciprocal interactions between coexistent substances. (shrink)

Frege taught us how to understand one form of predication: an atemporal one. There is also a different, temporal form of predication, which I briefly introduce. Accordingly, there are two fundamentally different approaches to time: a reductive one, aiming to account for time in terms of Frege’s atemporal predication, and a non-reductive one, insisting that the temporal form of predication is sui generis, and that time is to be understood in its terms. I do not directly argue for or against (...) reductionism in this paper. Rather, by evaluating the debates on endurantism–perdurantism, A-theory–B-theory, and presentism–eternalism, I argue that these debates, although aiming to be fundamental, largely boil down to mere quarrels between alternative reductive approaches. We should take notice of this fact and reorient ourselves within the debate on time accordingly: the real issue is whether we should reduce or not. I briefly sketch in what sense endurantism, A-theory, and presentism may be developed on a properly anti-reductionist basis. (shrink)

I am happy to report that serious metaphysics is alive and well in the work of Jonathan Lowe. His recent book The Possibility of Metaphysics: Substance, Identity, and Time is a major contribution to analytical metaphysics; it confirms Lowe’s standing as a leading figure in the field.

Despite changeability of the world, the human mind also ponders on those quantities that remain constant over time. This was the case in ancient times, in the middle ages, and the same applies in modern physics. This paper discusses i.a. Zenon paradoxes, the principle of inertia, and the Emma Noether theorem, ending with the modern, so-called Zeno’s quantum effect. The foot-notes concern the ancient “Achilles” paradox, spot speed, as well as some of the facts taken out of the life-history of (...) Emma Noether, as well as the example of applying her theorem. (shrink)

This is an attempt to sort out what is it that makes many of us uncomfortable with the perdurantist solution to the problem of change. Lewis argues that only perdurantism can reconcile change with persistence over time, while neither presentism nor endurantism can. So, first, I defend the endurantist solution to the problem of change, by arguing that what is relative to time are not properties, but their possession. Second, I explore the anti-perdurantist strategy of arguing that Lewis cannot solve (...) the problem of change, for he cannot account for how some properties are possessed by objects in time. However, I argue that this strategy fails, for if by saying that objects in time can have properties ‘timelessly’ we mean “at no particular time” and “tenselessly”, only objects outside time can have properties in that way; but if we mean “for all the time they exist”, or “essentially”, perdurantists can account for this. Finally, I argue that actually perdurantism cannot solve the problem, but for different reasons: for either it sweeps the problem under the carpet, denying change, and in general subverting our conceptual scheme in a dangerous way, or it becomes equivalent to the endurantist picture that properties are had at times. Nor perdurantism is justified by the Relativity Theory or the B-theory of time, because while endurantism is certainly comfortable with presentism, it need not be committed to it; and even if it were, presentism need not be refuted by the Relativity Theory. (shrink)

This paper investigates the use of theories of mechanics to provide answers to questions in the metaphysics of spatial location and persistence. Investigating spatial location, I find that in classical physics bodies pertend the region of space at which they are exactly located, while a quantum system spans a region at which it is exactly located. Following this analysis, I present a ‘no-go’ result which shows that quantum mechanics restricts the available options for locational persistence theories in an interesting way: (...) it demonstrates that the spatiotemporal path of a persisting thing is discrete in time. This leads to unpalatable consequences for both perdurantists and endurantists. In particular, I argue that Butterfield's ‘anti-pointilliste’ perdurantism is ruled out, and show that endurantists relying on immanent causation run into trouble. I conclude by suggesting the revival of Whitehead's alternative mode of persistence called ‘reiteration.’. (shrink)