Non-Humean accounts of the metaphysics of nature posit either laws or powers in order to account for natural necessity and world-order. We argue that such monistic views face fundamental problems. On the one hand, neo-Aristotelians cannot give unproblematic power-based accounts of the functional laws among quantities offered by physical theories, as well as of the place of conservation laws and symmetries in a lawless ontology; in order to capture these characteristics, commitment to governing laws is indispensable. On the other hand, (...) ontologies that entirely exclude some kind of power ascription to worldly entities face what we call the Governing Problem: such ontologies do not have the resources to give an adequate account of how laws play their governing role. We propose a novel dualist model, which, we argue, has the resources to solve the difficulties encountered by its two dominant competitors, without inheriting the problems of either view. According to the dualist model, both laws and powers are equally fundamental and irreducible to each other, and both are needed in order to give a satisfactory account of the nomological structure of the world. The dualist model constitutes thus a promising alternative to current monistic views in the metaphysics of science. (shrink)

Until recently, the powerful qualities view about properties has been effectively identified with the so-called identity theory. Yet, the difficulties that the latter faces (especially concerning the interpretation of its core claim that dispositionality and qualitativity are identical) have led some metaphysicians to propose (at least provisionally) new versions of the powerful qualities view. This paper discusses the prospects of three such versions: the compound view, the higher-order properties theory and the dual aspect account. It is argued that the compound (...) view is in fact property dualism in disguise, while the higher-order properties theory does not by itself provide a metaphysically convincing solution to Armstrong’s dilemma concerning the modal status of the relation between dispositionality and categoricality. Finally, it is argued that it is not clear whether the dual aspect account is distinct from identity theory and pure powerism. (shrink)

The Identity Theory of properties (IDT) is an increasingly popular metaphysical view that aims to be a middle way between pure powerism and pure categoricalism. This paper’s goal is to highlight three major difficulties that IDT should address in order to be a plausible account of the nature of properties. First, although IDT needs a clear definition of the notion of qualitativity which is both adequate and compatible with the tenets of the theory, all the extant proposals fail to provide (...) such a definition. Second, the suggested definitions of qualitativity are characterised by a metaphysical ‘neutrality’ that threatens to trivialise the important metaphysical debate regarding the question whether properties confer by themselves dispositions on their bearers (and so they are inherently modal and active) or need the ‘assistance’ of laws of nature to do that. Finally, none of the extant alternative understandings of the core identity-claim of IDT can adequately meet the objection that the claim in question is unintelligible. (shrink)

The vast majority of metaphysicians agree that powers (in contrast to categorical properties) can exist unmanifested. This paper focuses on the ontological distinction between unmanifested and manifested powers underpinning that fact and has two main aims. First, to determine the proper relata of the distinction and second, to show that an unrestricted version of dispositional monism faces serious difficulties to accommodate it. As far as the first aim is concerned, it is argued that the distinction in question, in order to (...) be free of irrelevant features, must hold between an un- manifested power-instance and the same power-instance being manifested. To the second end, the paper examines two possible candidate distinctions (actual vs. possible, be- ing-in-energeia vs. being-in-capacity). It is argued that the former fails to be a good fit for the role that the distinction under consideration should play in a dispositional monistic context. It is also argued that a specific version of the latter can ground a promising solution to the difficulty discussed in the paper. That solution, however, presupposes the inclusion of aspects of the Aristotelian metaphysical framework for powers to the dispositional monistic context. (shrink)

The Identity Theory of properties is an increasingly popular metaphysical view that aims to be a middle way between pure powerism and pure categoricalism. This paper’s goal is to highlight three major difficulties that IDT should address in order to be a plausible account of the nature of properties. First, although IDT needs a clear definition of the notion of qualitativity which is both adequate and compatible with the tenets of the theory, all the extant proposals fail to provide such (...) a definition. Second, the suggested definitions of qualitativity are characterised by a metaphysical ‘neutrality’ that threatens to trivialise the important metaphysical debate regarding the question whether properties confer by themselves dispositions on their bearers or need the ‘assistance’ of laws of nature to do that. Finally, none of the extant alternative understandings of the core identity-claim of IDT can adequately meet the objection that the claim in question is unintelligible. (shrink)

Most recently Smart and Thébault revived an almost forgotten debate between Katzav and Ellis on the compatibility of Hamilton’s Principle with Dispositional Essentialism. Katzav’s arguments inter alia aim to show that HP presupposes a kind of metaphysical contingency which is at odds with the basic tenets of DE, and offers explanations of a different type and direction from those given by DE. In this paper I argue that though dispositional essentialists might adequately respond to these arguments, the question about the (...) compatibility of HP with DE has not been answered yet; therefore, dispositional essentialists have not yet provided an illuminating DE-friendly metaphysical account of HP. (shrink)

Categorical Monism (that is, the view that all fundamental natural properties are purely categorical) has recently been challenged by a number of philosophers. In this paper, I examine a challenge which can be based on Gabriele Contessa’s [10] defence of the view that only powers can confer dispositions. In his paper Contessa argues against what he calls the Nomic Theory of Disposition Conferral (NTDC). According to NTDC, in each world in which they exist, (categorical) properties confer specific dispositions on their (...) bearers; yet, which disposition a (categorical) property confers on its bearers depends on what the (contingent) laws of nature happen to be. Contessa, inter alia, rests his case on an intuitive analogy between cases of mimicking (in which objects do not actually possess the dispositions associated with their displayed behaviour) and cases of disposition conferral through the action of laws. In this paper, I criticize various aspects of Contessa’s argumentation and show that the conclusion he arrives at (that is, only powers can confer dispositions) is controversial. (shrink)

Most metaphysicians agree that powers can exist without being manifested. The main goal of this paper is to show that adherents of an unrestricted version of Dispositional Monism cannot provide a plausible metaphysical account of the difference between a situation in which a power-instance is not manifested and a situation in which a manifestation of that power-instance actually occurs unless they undermine their own view. To this end, two kinds of manifestation-relation are introduced and it is argued that dispositional monists (...) should appeal to the former in order to offer the required account. After defending the introduction of token-level-manifestation-relations against objections to their metaphysical robustness and explanatory non-redundancy, it is finally argued that their existence is incompatible with the core tenet of an unrestricted form of Dispositional Monism because they cannot be powers. (shrink)

How do non-Humean laws govern regularities in nature? According to the Inference Problem, non-Humean accounts of governing face a central problem: it is not clear how such laws do perform their governing function. Recently, Jonathan Schaffer has argued that the introduction of a law-to-regularity axiom is sufficient to solve the Inference Problem. The authors argue that Schaffer’s solution faces a devastating dilemma: either the required axiom cannot, on its own, differentiate the non-Humean account from a Humean account of laws or, (...) if more content is added to the primitive governing posit, it should be shown how and why the ‘outfitted’ posit obtains in the world. Furthermore, the authors show that those cases that Schaffer presents to motivate his approach are not analogous to the case of lawhood and so they cannot provide justification for his axiomatic solution. (shrink)

Rani Lill Anjum and Stephen Mumford have recently defended a new kind of modality, which they call ‘dispositional modality’. The key reason to adopt dispositional modality, according to them, is that causes never necessitate their effects. Anjum and Mumford’s chief argument against causal necessitation makes use of what they call the ‘antecedent-strengthening test’ : C causally necessitates E iff C & φ causes E, for any possible φ. This test, they claim, fails in all cases of alleged causal necessitation. In (...) this paper we argue that the AS-test is not the mark of causal necessitation. First, we show that if the AS-test is taken as the mark of causal necessitation it leads to either an absurdity or to circularity. Second, we argue that, given the Mill/Mackie framework of causes as INUS conditions, apparent counterexamples to causal necessitation fail. (shrink)

A number of metaphysicians and philosophers of science have raised the issue of themodalityof the fundamental structures of the world. Although the debate so far has been largely focused on the (alleged) inherent causal character of fundamental structures, one aspect of it has naturally taken its place as part of the dispositional/categorical debate. In this paper, I focus on the latter in the case of the fundamentalsymmetrystructures. After putting forward the necessary metaphysical presuppositions for the debate to make sense, I (...) offer an argument which undermines the plausibility of a dispositionalist account of fundamental symmetry structures. (shrink)

The bulk of the literature concerning the governing role of non-Humean laws has been concentrated on the alleged incapability of higher order nomic facts to determine the regularities in the behaviour of actual objects, the so-called Inference Problem. Most recently Ioannidis, Livanios and Psillos (2021) argue that an adequate solution to the Inference Problem requires an answer to the question of how nomic relations manage to ‘tell’ properties what to do. Ioannidis et al. dub the difficulty that all extant accounts (...) of governing laws face to give such an answer, the Governing Problem and introduce a Dualist Model, according to which the specific behaviour of things in the world is the outcome of both the thin powers things have to be subjected to laws, and certain nomic features of the world. The aim of this paper is to show that the most plausible form of the Dualist Model can provide the basis for a novel version of the Powerful Qualities View about properties. To this end it presents ways of developing two aspects of the Dualist Model. It defends the view that nomic relations must be relata-specific in order to play their theoretical role within the Model and provides arguments for the view that natural properties should have the minimum (compatible with the core tenets of the Model) modal strength. (shrink)

A well-known difficulty that affects all accounts of laws of nature according to which the latter are higher-order facts involving relations between universals (the so-called DTA accounts, from Dretske in Philosophy of Science 44:248–268, 1977; Tooley in Canadian Journal of Philosophy 7:667–698, 1977 and Armstrong (What is a Law of Nature?, Cambridge University Press, Cambridge, 1983)) is the Inference Problem: how can laws construed in that way determine the first-order regularities that we find in the actual world? Bird (Analysis 65:147–55, (...) 2005) has argued that there is no solution to the Inference Problem which is consistent with both categorical monism (that is, the view that all natural properties are categorical) and basic tenets of Armstrong’s account of the laws of nature. This paper shows that, given Armstrong’s view about laws as first-order structural universals whose instantiation ‘produce’ nomic regularities and under specific plausible metaphysical assumptions concerning nomic relations which are consistent with a broadly construed DTA approach to laws, there is no extra difficulty regarding the Inference Problem in a categorical monistic context besides the ones that beset structural universals in general. (shrink)

This paper aims to be a contribution to the recent discussion on the science-metaphysics relationship. After drawing a distinction between two aspects of the relationship, it defends the theoretical importance of the proposed distinction and argues for the interconnectedness of the aspects in question. The paper then focuses on one of those aspects: that is, the methodological strategy of some metaphysicians to appeal to scientific findings and practice in the course of discussing various pure metaphysical problems. It discusses the question (...) about the scope of science-informed metaphysics and its relation to the issue concerning the existence of an autonomous metaphysical possibility. Finally, the paper explores the reasons metaphysicians have for involving science in metaphysical discussions. (shrink)

_ Source: _Page Count 20 Tugby and Yates have recently argued that immanent realism is incompatible with the existence of intrinsic but relationally constituted genuine dispositional properties. The success of Tugby’s and Yates’ arguments depends either on a strong or on a weak assumption about the interworld identity of dispositional properties. In this paper, the author evaluates the strength of the arguments in question under those two assumptions. He also offers an alternative metaphysical picture for the fundamental dispositional properties which (...) rejects these assumptions and, consequently, undermines the arguments themselves. (shrink)

In his book Powers (2003), George Molnar argues against Dispositional Monism by presenting a posteriori reasons to believe in the existence of actual categorical features. In this paper I argue that either Molnar’s project is misdirected, since the properties he concentrates on are most possibly irrelevant for the debate between Dispositional Monism and Property Dualism, or, granted that the properties he chooses are indeed relevant, his arguments cannot prove that they are categorical without begging the question against Dispositional Monism.

In a sense, Ted Sider’s latest book bridges the gap between analytic metaphysics and metaphysics of science. On the one hand, the whole discussion seems to fall under the scope of analytic metaphys...

Dispositional Pluralism. By McKitrick Jennifer.

Review of James Franklin: An Aristotelian Realist Philosophy of Mathematics: Mathematics as the Science of Quantity and Structure, Palgrave Macmillan, 2014, x + 308 pp.