| Ross Cameron | A Note on Kripke's Footnote 56 Argument for the Essentiality of Origin | |
| Metaphysics | None | |
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In Footnote 56 of his Naming and Necessity, Kripke offers a `proof' of the essentiality of origin. On its most literal reading the argument is clearly flawed, as was made clear by Nathan Salmon. Salmon attempts to save the literal reading of Kripke's argument, but I argue that the new argument is flawed as well, and that it can't be what Kripke intended. I offer an alternative reconstruction of Kripke's argument, but I show that this suffers from a more subtle fault.
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| Ross Cameron | Comments on Merricks' 'Truth and Ontology' | |
| Metaphysics | None | |
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| Ross Cameron | Composition as Identity Doesn't Settle the Special Composition Question | |
| Metaphysics | None | |
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Orthodoxy says that the thesis that composition is identity (CAI) entails universalism: the claim that any collection of entities has a sum. If this is true it counts in favour of CAI, since a thesis about the nature of composition that settles the otherwise intractable special composition question (SCQ) is desirable. But I argue that it is false: CAI is compatible with the many forms of restricted composition, and SCQ is no easier to answer given CAI than otherwise. Furthermore, in seeing why this is the case we reveal an objection to CAI: that it allows for the facts concerning what there is to be settled whilst leaving open the question about what is identical to what.
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| Ross Cameron, Elizabeth Barnes | Critical Study of John Heil's 'From an Ontological Point of View' | |
| Metaphysics | None | |
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| Ross Cameron | Critical Study of Takashi Yagisawa's 'Worlds and Individuals, Possible and Otherwise' | |
| Metaphysics | None | |
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| Ross Cameron | From Humean truthmaker theory to priority monism | |
| Metaphysics | None | |
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I argue that the truthmaker theorist should be a priority monist if she wants to avoid commitment to mysterious necessary connections. In section 1 I briefly discuss the ontological options available to the truthmaker theorist. In section 2 I develop the argument against truthmaker theory from the Humean denial of necessary connections. In section 3 I offer an account of when necessary connections are objectionable. In section 4 I use this criterion to narrow down the options from section 1. In section 5 I argue that the account leads us to priority monism.
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| Ross Cameron | God exists at every (modal realist) world: response to Sheehy | |
| Philosophy of Religion | None | |
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Paul Sheehy has argued that the modal realist cannot satisfactorily allow for the necessity of God’s existence. In this short paper I show that she can, and that Sheehy only sees a problem because he has failed to appreciate all the resources available to the modal realist. God may be an abstract existent outside spacetime or He may not be: but either way, there is no problem for the modal realist to admit that He exists at every concrete possible world.
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| Ross Cameron | How to be a Truthmaker Maximalist | |
| Metaphysics | None | |
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I begin by arguing that if any truths require truthmakers then all truths require truthmakers. I then propose the view that it is the world that is the truthmaker for negative existentials and defend this view against the leading rival accounts of truthmakers for negative truths. I end by responding to the objection that this makes truthmaker theory useless as a guide to what there is.
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| Ross Cameron | How to have a radically minimal ontology | |
| Metaphysics | None | |
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| Ross Cameron | Lewisian Realism: Methodology, Epistemology and Circularity | |
| Metaphysics | Epistemology | |
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In this paper I look at two familiar objections to Lewisian Modal Realism: that Lewisian worlds have nothing to do with modality, and that we couldn't know what went on at Lewisian worlds even if there were any. I show how Lewis' response to both objections presupposes the truth of Lewisian realism, and argue that this results in warrant for Lewisian realism being unobtainable.
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| Ross Cameron | Much Ado About Nothing: A Study of Metaphysical Nihilism | |
| Metaphysics | None | |
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This paper is an investigation of metaphysical nihilism: the view that there could have been no contingent or concrete objects. I begin by showing the connections of the nihilistic theses to other philosophical doctrines. I then go on to look at the arguments for and against metaphysical nihilism in the literature and find both to be flawed. In doing so I will look at the nature of abstract objects, the nature of spacetime and mereological simples, the existence of the empty set, the dependence of universals on particulars, and other general questions of ontology.
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| Ross Cameron | Necessity and Triviality | |
| Metaphysics | None | |
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In this paper I argue that there are some sentences whose truth makes no demands on the world: they are trivially true, in that their truth-conditions are trivially met. I argue that such sentences must be necessarily true, lest we violate a very weak version of the principle that truth depends on the world. I further argue that all necessary truths are trivially true, lest we admit unexplained necessities. I apply the thought to truthmaker theory and argue that if there are truthmakers for contingent intrinsic predications then they must be states of affairs rather than tropes.
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| Ross Cameron | On the Source of Necessity | |
| Metaphysics | None | |
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Simon Blackburn posed a dilemma for any realist attempt to identify the source of necessity. Either the facts appealed to to ground modal truth are themselves necessary, or they are contingent. If necessary, we begin the process towards regress; but if contingent, we undermine the necessity whose source we wanted to explain. Bob Hale attempts to blunt both horns of this dilemma. In this paper I examine their respective positions and attempt to clear up some confusions on either side. I come to defend Hale's conclusion that both horns of the dilemma can be resisted. I end by defending my own account of the source of necessity, and showing why it does not fall victim to Blackburn's problem.
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| Ross Cameron | Quantification, Naturalness and Ontology | |
| Metaphysics | None | |
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Quine said that the ontological question can be asked in three words, ‘What is there?’, and answered in one, ‘everything’. He was wrong. We need an extra word to ask the ontological question: it is ‘What is there, really?’; and it cannot be answered truthfully with ‘everything’ because there are some things that exist but which don’t really exist (and maybe even some things that really exist but which don’t exist).
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| Ross Cameron | Recombination and Intrinsicality | |
| Metaphysics | Epistemology | |
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In this paper I argue that warrant for Lewis' principle of recombination presupposes warrant for a combinatorial analysis of intrinsicality, which in turn presupposes warrant for the principle of recombination. This, I claim, leads to a vicious circularity: warrant for neither doctrine can get off the ground.
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| Ross Cameron, Sonia Roca | Reply to Rohbraugh and deRosset on the Necessity of Origin | |
| Metaphysics | None | |
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| Ross Cameron | Subtractability and Concreteness | |
| Metaphysics | None | |
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In a recent article, David Efird and Tom Stoneham defend what I think is the best version of the subtraction argument for metaphysical nihilism --- the view that there could have been no concrete objects at all --- to date. In this short paper I argue that their argument is either invalid or unsound. My claim is that when the premisses are understood in such a way that their argument is valid, there is a tension between the premisses, and hence that we shouldn't hold both together, in which case the argument is unsound. On the other hand, if we understand the premisses in such a way that they are both true, then the argument is invalid.
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| Ross Cameron | The Contingency of Composition | |
| Metaphysics | None | |
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There is widespread disagreement as to what the facts are concerning just when a collection of objects composes some further object; but there is widespread agreement that, whatever those facts are, they are necessary. I am unhappy to simply assume this, and in this paper I ask whether there is reason to think that the facts concerning composition hold necessarily. I consider various reasons to think so, but find fault with each of them. I examine the theory of composition as identity, but argue that the version of this doctrine that entails universalism is implausible. I consider the claim that the a priority of such facts leads to their necessity, but give a defence of substantial contingent a priori truths. I ask whether the contingency of such facts would lead to unwelcome possibilities, but argue that the worrying looking possibilities can be blocked if it is desired. Next, I argue against the thought that the Lewis-Sider argument against restricted composition might give us reason to accept the necessity of universalism. Lastly, I respond to two objections from the 2006 BSPC. I conclude in favour of the contingency of the facts concerning when some things compose some thing.
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| Ross Cameron, Elizabeth Barnes | The Open Future: Bivalence, Determinism and Ontology | |
| Metaphysics | None | |
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In this paper we aim to disentangle the thesis that the future is open from theses that often get associated or even conflated with it. In particular, we argue that the open future thesis is compatible with both the unrestricted principle of bivalence and determinism with respect to the laws of nature. We also argue that whether or not the future (and indeed the past) is open has no consequences as to the existence of (past and) future ontology.
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| Ross Cameron | There are no things that are musical works | |
| Metaphysics | Aesthetics | |
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Works of music don’t appear to be concrete objects; but they do appear to be created by composers, and abstract objects don’t seem to be the kind of things that can be created. In this paper I aim to develop an ontological position that lets us salvage the creativity intuition without either adopting an ontology of created abstracta or identifying musical works with concreta. I will argue that there are no musical works in our ontology, but nevertheless the English sentences we want to hold true are literally true. I rely on a meta-ontological view whereby ‘a exists’ can be true without committing us to an entity that is a. This meta-ontological view is illustrated by its application to the familiar example of the statue and the clay. I argue that my account of musical ontology fares better on the balance of costs and benefits than its rivals.
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| Ross Cameron | Tropes, Necessary Connections, and Non-Transferability | |
| Metaphysics | None | |
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In this paper I examine whether the Humean denial of necessary connections between wholly distinct contingent existents poses problems for a theory of tropes. In section one I consider the substance-attribute theory of tropes. I distinguish first between three versions of the non-transferability of a trope from the substratum in which it inheres and then between two versions of the denial of necessary connections. I show that the most plausible combination of these views is consistent. In section two I consider an objection to the bundle theory using the Humean doctrine that is advanced by Armstrong, and argue that it is unconvincing. In section three I return to the version of non-transferability that would cause obvious trouble for a substance-attribute theory, and less obvious trouble for a bundle theory. I argue that there is independent reason to reject this principle since, given a perdurantist metaphysic, it does not in fact secure what appeared to be its only benefit: namely that it allows tropes to act as truthmakers. I conclude that there is no objection to trope theory per se on the grounds that it brings commitment to necessary connections.
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| Ross Cameron | Truthmaker Necessitarianism and Maximalism | |
| Metaphysics | None | |
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In this paper I examine two principles of orthodox truthmaker theory: truthmaker maximalism - the doctrine that every (contingent) truth has a truthmaker, and truthmaker necessitarianism - the doctrine that the existence of a truthmaker necessitates the truth of any proposition which it in fact makes true. I argue that maximalism should be rejected and that once it is we only have reason to hold a restricted form of necessitarianism.
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| Ross Cameron | Truthmakers and Modality | |
| Metaphysics | None | |
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This paper attempts to locate, within an actualist ontology, truthmakers for modal truths: truths of the form or . In section 1 I motivate the demand for substantial truthmakers for modal truths. In section 2 I criticise Armstrong’s account of truthmakers for modal truths. In section 3 I examine essentialism and defend an account of what makes essentialist attributions true, but I argue that this does not solve the problem of modal truth in general. In section 4 I discuss, and dismiss, a theistic account of the source of modal truth proposed by Alexander Pruss. In section 5 I offer a means of (dis)solving the problem.
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| Ross Cameron | Truthmakers and Necessary Connections | |
| Metaphysics | None | |
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In this paper I examine Lewis' objection to truthmaker theory (at least without counterpart theory): that it commits us to unacceptable, and un-Humean, necessary connections between wholly distinct existences. I argue that no plausible version of the Humean doctrine is incompatible with truthmaker theory.
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| Ross Cameron | Truthmakers and Ontological commitment: or, how to deal with complex objects and mathematical ontology without getting into trouble | |
| Metaphysics | None | |
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What are the ontological commitments of a sentence? In this paper I offer an answer from the perspective of the truthmaker theorist that contrasts with the familiar Quinean criterion. I detail some of the benefits of thinking of things this way: they include making the composition debate tractable without appealing to a neo-Carnapian metaontology, making sense of neo-Fregeanism, and dispensing with some otherwise recalcitrant necessary connections.
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| Ross Cameron | Truthmakers, Realism and Ontology | |
| Metaphysics | Philosophy of Language | |
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The truthmaker principle, that for every true proposition there is some thing (or things) whose existence necessitates the truth of that proposition, is often appealed to, but less often argued for. In this essay I will try and say something about why I believe it; or at least, why I think it a reasonable principle for the ontologist to be guided by. I will suggest that it is wrong both to think of the truthmaker principle as a constraint on any acceptable metaphysic and to dismiss it as completely unmotivated. The truthmaker principle offers benefits, but not ones that cannot be outweighed; as is often the case, the question is simply whether the benefits are worth the cost.
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| Ross Cameron | Truthmaking for Presentists | |
| Metaphysics | None | |
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This paper aims to reconcile presentism with truthmaker theory. I begin by motivating the reconciliation. In section 2 I ask what is wrong with the Lucretian strategy of grounding in the world’s instantiating being such that there were dinosaurs. I aim to pinpoint what is ‘peculiar’ about such properties and hence to say what kind of properties the presentist needs in order to give an acceptable reconciliation; in section 3 I argue that certain distributional properties do the job. In 4 I deal with some potential objections; in 5 I show how the presentist who accepts my view can deal with the open future; this raises questions concerning how to give truthmakers for indeterminate and determinate truths, which are dealt with in section 6. In section 7, I make some remarks concerning ontology versus ideology, which leads into a discussion of tense, determinacy and modality in section 8.
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| Ross Cameron | Turtles all the way down: Regress, priority and fundamentality in metaphysics | |
| Metaphysics | None | |
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This paper is a discussion of an intuition commonly held by metaphysicians: that there must be a fundamental layer of reality; that there can’t be infinitely descending chains of ontological dependence. I discuss application of this intuition with reference to Bradley’s regress, composition, realism about the mental and the cosmological argument. I discuss some arguments for the intuition, but argue that they are unconvincing. I conclude by making some suggestions for how the intuition should be argued for, and discussing the ramifications of giving the justification I think best.
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| Ross Cameron | Vagueness and Naturalness | |
| Metaphysics | Philosophy of Language | |
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I attempt to accommodate the phenomenon of vagueness with classical logic and bivalence. I hold that for any vague predicate there is a sharp cut-off between the things that satisfy it and the things that don’t; I claim that this is due to the greater naturalness of one of the candidate meanings of that predicate. I extend the thought to the problem of the many and Benacerraf problems. I end by exploring the idea that it is ontically indeterminate what the most natural meanings are, and hence ontically indeterminate where the sharp cut-off in a sorites series is.
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| Ross Cameron | What's Metaphysical about Metaphysical Necessity? | |
| Metaphysics | None | |
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I begin by contrasting three approaches one can take to the distinction between the essential and accidental properties: an ontological, a deflationary, and a mind-dependent approach. I then go on to apply that distinction to the necessary a posteriori, and defend the deflationist view. Finally I apply the distinction to modal truth in general and argue that the deflationist position lets us avoid an otherwise pressing problem for the actualist: the problem of accounting for the source of modal truth.
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| Ross Cameron | Why Lewis’s analysis of modality succeeds in its reductive ambitions. | |
| Metaphysics | None | |
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Some argue that Lewisian realism fails as a reduction of modality because in order to meet some criterion of success the account needs to invoke primitive modality. I defend Lewisian realism against this charge; in the process, I hope to shed some light on the conditions of success for a reduction. In §1 I detail the resources the Lewisian modal realist needs. In §2 I argue against Lycan and Shalkowski’s charge that Lewis needs a modal notion of ‘world’ to ensure that worlds correspond to possibilities. In §3 I respond to Divers and Melia’s objection that Lewis needs to invoke primitive modality to give a complete account of what worlds there are. In §4 I ask what it is for a notion to ‘involve’ modality. I conclude that the question is either in bad standing or at best offers little traction on the debate, and propose a different way of assessing when materials are appropriately included in a reductive base.
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