PRESENTISM,PERSISTENCE AND COMPOSITION

Pace Benovsky's ‘Presentism and Persistence,’ presentism is compatible with perdurantism, tropes and bundle‐of‐universals theories of persisting objects. I demonstrate how the resemblance, causation and precedence relations that tie stages together can be accommodated within an ersatzer presentist framework. The presentist account of these relations is then used to delineate a presentist‐friendly account of the inter‐temporal composition required for making worms out of stages. The defense of presentist trope theory shows how properties with indexes other than t may be said to exist at t. This involves an account of how times other than t exist at t, and how times may be multiply located at any given time. Benovsky's objection to bundles of universals is shown to assume that a bundle of properties must have the properties of its element properties.     

Continuants and Occurrents: Joseph Melia

In this paper I try to eliminate occurrents from our ontology. I argue against Simons' position that occurrents are needed to supply truthmakers for existential claims about continuants. Nevertheless, those who would eliminate occurrents still need some account of our willingness to assert sentences that logically entail their existence. Though it turns out to be impossible to paraphrase away our reference to occurrents, I show that the truthmakers for such sentences are facts that involve only continuants. This is enough to allow us to regard our ordinary talk about occurrents as fictional. Finally, I argue that a proper conception of the underlying temporal facts about continuants can both avoid the problematic tensed theory of time and the problem of temporary intrinsics.     

Continuants and Occurrents: Peter Simons

Commonsense ontology contains both continuants and occurrents, but are continuants necessary? I argue that they are neither occurrents nor easily replaceable by them. The worst problem for continuants is the question in virtue of what a given continuant exists at a given time. For such truthmakers we must have recourse to occurrents, those vital to the continuant at that time. Continuants are, like abstract objects, invariants under equivalences over occurrents. But they are not abstract, and their being invariants enables us toinfer both their lack of temporal parts and that non-invariant predications about them must be relativized to times.
[E]ndurance is the property of finding its pattern reproduced in the temporal parts of the total event.
Whitehead, Science and the Modern World, 189.     

Tropes in space

Tropes are particular features of concrete objects. Properties—the extensions of predicates—are primitive resemblance classes of tropes. Friends of tropes have been criticized for failing to answer three questions. First, are there fundamental items other than tropes? Second, what criteria determine whether some tropes are all and only the features of some one object? Third, can trope classes be formed adequately using only primitive resemblance? Trading on the spatiotemporal status of tropes, this essay offers new responses to each of these questions. The novel thesis is that there is a sui generis property called ‘markedness’, whose tropes “mark” certain locations in an ontologically basic way. The spatiotemporal distribution of markedness tropes fixes the distribution of familiar characterizing tropes like mass and charge, and characterizing tropes are bundled by being co-contained in the location of a maximally connected markedness trope. This novel theory of trope bundling is defended by appeal to theoretical utility: it is ontologically parsimonious and solves outstanding problems involving co-location and resemblance class construction.     

Hume as a trope nominalist

In this paper, I argue that Hume's solution to a problem that contemporary metaphysicians call “the problem of universals” would be rather trope-theoretical than some other type of nominalism. The basic idea in different trope theories is that particular properties, i.e., tropes are postulated to account for the fact that there are particular beings resembling each other. I show that Hume's simple sensible perceptions are tropes: simple qualities. Accordingly, their similarities are explained by these tropes themselves and their resemblance. Reading Hume as a trope nominalist sheds light on his account of general ideas, perceptions, relations and nominalism.     

The Causal Argument Against Natural Class Trope Nominalism

In this paper, I consider an objection to ``natural class'trope nominalism, the view that a trope's nature isdetermined by its membership in a natural class of tropes.The objection is that natural class trope nominalismis inconsistent with causes' being efficacious invirtue of having tropes of a certain type. I arguethat if natural class trope nominalism is combinedwith property counterpart theory, then this objectioncan be rebutted.     

Three Trope Theories

Universals are usually considered to be universal properties. Since tropes are particular properties, if there are only tropes, there are no universals. However, universals might be thought of not only as common properties, but also as common aspects (“determinable universals”) and common wholes (“concrete universals”). The existence of these two latter concepts of universals is fully compatible with the assumption that all properties are particular. This observation makes possible three different trope theories, which accept tropes and no universals, tropes and determinable universals and tropes and concrete universals.

Revisiting the Tropic of Value: Reply to Rabinowicz and Rønnow‐Rasmussen*

In this paper, I defend the view that the values of concrete objects and persons are reducible to the final values of tropes. This reductive account has recently been discussed and rejected by Rabinowicz and R0nnow‐Rasmussen (2003). I begin by explaining why the reduction is appealing in the first place. In my rejoinder to Rabinowicz and R0nnow‐Rasmussen I defend trope‐value reductionism against three challenges. 1 focus mainly on their central objection, that holds that the reduction is untenable since different evaluative attitudes have, ontologically speaking, different objects. I grant that this may well be so, but argue that the objection is based on an unwarranted, loose reading of the notion ‘value for its own sake’. On the more reasonable strict reading, it is plausible to maintain that tropes are the sole ontological category that can properly be ascribed final value.     

Temporal Parts and Bundle Theory

In this paper, I try to make a bundle theory of objects consistentwith a temporal parts theory of object persistence. To that end,I propose that such bundles are made up of tropes includingthe co-instantiation relation.     

No logic of cogency: Reply to Oakley

Despite the fact that the nature of the properties of causation is rarely discussed within the mental causation debate, the implicit assumption is that they are universals as opposed to tropes. However, in recent literature on the problem of mental causation, a new solution has emerged which aims to address the problem by appealing to tropes. It is argued that if the properties of causation are tropes rather than universals, then a psychophysical reductionism can be advanced which does not face the problem of multiple realizability. However, the 'trope solution' rests upon the assumption that one can combine a trope monism with a type dualism. I argue that such a combination cannot be allowed. Given a plausible interpretation of types within a trope ontology, trope monism in fact entails type monism. Consequently, if one identifies mental tropes with physical tropes, one must also identify mental and physical types and in doing so face a modified version of the multiple realizability argument.     

Against zero-dimensional material objects (and other bare particulars)

A modus tollens against zero-dimensional material objects is presented from the premises (i) that if there are zero-dimensional material objects then there are bare particulars, and (ii) that there are no bare particulars. The argument for the first premise proceeds by elimination. First, bare particular theory and bundle theory are motivated as the most appealing theories of property exemplification. It is then argued that the bundle theorist??s Ockhamism ought to lead her to reject spatiotemporally located zero-dimensional property instances. Finally, it is argued that since she must accept such instances if she accepts zero-dimensional material object bundles, she ought to avoid the latter. This leaves bare particular theory as the default view of zero-dimensional material objects. The argument for the second premise invokes the thesis that the exemplification of at least one sparse property is a prerequisite for the existence of any particular. It is argued from Humean considerations that bare particulars fail this prerequisite.     

Tropes As Character-Grounders

There is a largely unrecognized ambiguity concerning the nature of a trope. Disambiguation throws into relief two fundamentally different conceptions of a trope and provides two ways to understand and develop each metaphysical theory that puts tropes to use. In this paper I consider the relative merits that result from differences concerning a trope's ability to ground the character of ordinary objects. I argue that, on each conception of a trope, there are unique implications and challenges concerning character-grounding.     

Tropes,Particularity, and Space-Time

Several difficulties, concerning the individuation and the variation of tropes, beset the initial classic version of trope theory. K. Campbell (Abstract particulars, Oxford, Basil Blackwell, 1990) presented a modified version that aims to avoid those difficulties. Unfortunately, the revised theory cannot make the case that one of the fundamental tropes, space-time, is a genuine particular.     

Material objects and essential bundle theory

In this paper we present a new metaphysical theory of material objects. On our theory, objects are bundles of property instances, where those properties give the nature or essence of that object. We call the theory essential bundle theory. Property possession is not analysed as bundle-membership, as in traditional bundle theories, since accidental properties are not included in the object’s bundle. We have a different story to tell about accidental property possession. This move reaps many benefits. Essential bundle theory delivers a simple theory of the essential properties of material objects; an explanation of how object coincidence can arise; an actual-world ground for modal differences between coincident objects; a simple story about intrinsic properties; and a plausible account of certain ubiquitous cases of causal overdetermination.     

Form Without Matter

Three different concepts of matter are identified: matter as what a thing is immediately made of, matter as stuff of a certain kind, and matter in the (dubious) sense of material 'substratum'. The doctrine of hylomorphism, which regards every individual concrete thing as being 'combination' of matter and form, is challenged. Instead it is urged that we do well to identify an individual concrete thing with its own particular 'substantial form'. The notions of form and matter, far from being correlative, are relatively independent. There is nothing absurd in the notion of form without matter . Matter provides neither a principle of individuation nor a criterion of identity for individual concrete things: their form alone provides both. Finally, a substance ontology which admits also the existence of particular qualities, or tropes, is to be preferred both to a substance ontology which denies the existence of tropes and to a pure trope ontology.     

Reply to Noordhof on Mental Causation

In my paper 'The Properties of Mental Causation', PQ , 47 (1997), pp. 178–94. I proposed (as others have) a trope-based solution to a problem of mental causation. Noordhof in PQ , 48 (1998), pp. 221–6, has objected that the solution raises new problems just as intractable as the original. Some of his criticisms are based on misunderstandings of the role of tropes in the theory and of my general aim. He does, however, usefully develop an objection I addressed briefly in my paper: even if the trope solution explains how mental properties are causally relevant, does it explain how they are relevant qua mental? That is, does the problem appear again at the level of tropes? This kind of objection can be raised against any proposed solution to the problem, but it depends on the questionable assumption that properties themselves have properties. Noordhof also insists that the trope solution must provide a criterion of trope identity, but this is, I argue, a red herring in this context.     

The bundle theory and the substratum theory: deadly enemies or twin brothers?

In this paper, I explore several versions of the bundle theory and the substratum theory and compare them, with the surprising result that it seems to be true that they are equivalent (in a sense of ‘equivalent’ to be specified). In order to see whether this is correct or not, I go through several steps: first, I examine different versions of the bundle theory with tropes and compare them to the substratum theory with tropes by going through various standard objections and arguing for a tu quoque in all cases. Emphasizing the theoretical role of the substratum and of the relation of compresence, I defend the claim that these views are equivalent for all theoretical purposes. I then examine two different versions of the bundle theory with universals, and show that one of them is, here again, equivalent to the substratum theory with universals, by examining how both views face the famous objection from Identity of Indiscernibles in a completely parallel way. It is only the second, quite extreme and puzzling, version of the bundle theory with universals that is not equivalent to any other view; and the diagnosis of why this is so will show just how unpalatable the view is. Similarly, only a not-so-palatable version of the substratum theory is genuinely different from the other views; and here again it’s precisely what makes it different that makes it less appealing.

Do Tropes Resolve the Problem of Mental Causation?

David Robb has argued (in 'The Properties of Mental Causation', The Philosophical Quarterly , 47 (1997), pp. 178–94), that tropes are the properties of causation, i.e., the properties in virtue of which causal relations hold. He thinks that the welcome upshot of this is that there is no problem of mental causation. I argue that his reasons for thinking that tropes are the properties of causation are unsound. In addition, even if one takes the trope approach as a reasonable reform of our current practice, the problem of mental causation still arises. It is just been hidden in the question of what makes tropes identical.     

The ‘borderzone zone’ controversy a study of theory structure in biomedicine

This paper gives an account of theory structure in the biomedical sciences with particular emphasis on cardiology. Rather than regarding theories as axiomatizable sets of statements (the so-called ‘received view’), theories are regarded as answers to questions which are accepted as legitimate and interesting by scientists within a field of investigation at a given time. This account of theory structure is used to distinguish between theories which are quite liable to be revised during the course of scientific investigation, here called theories within the field, and theories which are more securely established, here called theories of the field. These latter theories can also be regarded as patterns of reasoning which are applied again and again to answer the questions of the field. It is argued that the distinction proposed in this paper fits our intuitive understanding of what it means for a theory to be securely established within a field of research. Several examples are given which show the problems of justifying clinical intervention solely on the basis of theories within the field.     

Internal,External and Intra-Individual Relations

In this paper I argue that there are in fact external relations in Russell’s sense. The level at which we are forced to acknowledge them is, however, not the level of relations between concrete individual objects. All relations of this kind, which I will call “inter-individual” relations, can be construed as supervenient on the monadic properties of their terms. But if we pursue our ontological analysis a little bit deeper and consider the internal structure of a concrete individual, then we will inevitably find irreducible external relations. I mean for example the relation of instantiation (in the frame of a realist’s theory) or that of concurrence (in the frame of a trope theory). I will show that such “intra-individual” relations – the relations that make up the internal structure of a concrete individual out of more primitive metaphysical “building blocks” like universals or tropes – could not (even in principle) be construed as supervenient. I should like to thank David Frost for brushing up my English and the Austrian Foundation for the Promotion of Scientific Research (FWF) for the financial support.