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  1. If Counterfactuals Were Neg-Raisers, Conditional Excluded Middle Wouldn’T Be Valid.Patrick Todd & Brian Rabern - manuscript
    The principle of Conditional Excluded Middle has been a matter of longstanding controversy in both semantics and metaphysics. According to this principle, we are, inter alia, committed to claims like the following: If the coin had been flipped, it would have landed heads, or if the coin had been flipped, it would not have landed heads. In favour of the principle, theorists have appealed, primarily, to linguistic data such as that we tend to hear ¬(A > B) as equivalent to (...)
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  2. The Situationalist Account of Change.Martin Pickup - forthcoming - Oxford Studies in Metaphysics.
    In this paper I propose a new solution to the problem of change: situationalism. According to this view, parts of reality fundamentally disagree about what is the case and reality as a whole is unsettled (i.e. metaphysically indeterminate). When something changes, parts of the world irreconcilably disagree about what properties it has. From this irreconcilable disagreement, indeterminacy arises. I develop this picture using situations, which are parts of possible worlds; this gives it the name situationalism. It allows a B-theory endurance (...)
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  3. Quantum Mechanics and Fundamentality: Naturalizing Quantum Theory Between Scientific Realism and Ontological Indeterminacy.Valia Allori (ed.) - 2022 - Cham: Springer.
    This edited collection provides new perspectives on some metaphysical questions arising in quantum mechanics. These questions have been long-standing and are of continued interest to researchers and graduate students working in physics, philosophy of physics and metaphysics. It features contributions from a diverse set of researchers, ranging from senior scholars to junior academics, working in varied fields, from physics to philosophy of physics and metaphysics. The contributors reflect on issues about fundamentality (is quantum theory fundamental? If so, what is its (...)
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  4. Indeterminacy: Deep but Not Rock Bottom.Cristian Mariani - 2022 - Analytic Philosophy 63 (1):62-71.
    Barnes (2014) has argued in this journal for the following conditional: If there is any metaphysical indeterminacy, this must be at the most fundamental level of reality. To argue for this claim, Barnes relies on two principles that I shall call bivalent completeness and determinate link. According to the former, a complete description is a bivalent assignment of truth values to every sentence. The determinate link, instead, establishes that the determination relation between levels of reality preserves determinacy from one level (...)
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  5. Derivative Metaphysical Indeterminacy and Quantum Physics.Alessandro Torza - 2022 - In Valia Allori (ed.), Quantum Mechanics and Fundamentality: Naturalizing Quantum Theory between Scientific Realism and Ontological Indeterminacy. Cham: Springer. pp. 337-350.
    This chapter argues that quantum indeterminacy can be construed as a merely derivative phenomenon. The possibility of merely derivative quantum indeterminacy undermines both a recent argument against quantum indeterminacy due to David Glick, and an argument against the possibility of merely derivative indeterminacy due to Elizabeth Barnes.
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  6. Quantum Indeterminacy and the Double-slit Experiment.Claudio Calosi & Jessica Wilson - 2021 - Philosophical Studies 178 (10):3291-3317.
    In Calosi and Wilson (Phil Studies 2019/2018), we argue that on many interpretations of quantum mechanics (QM), there is quantum mechanical indeterminacy (QMI), and that a determinable-based account of metaphysical indeterminacy (MI), as per Wilson 2013 and 2016, properly accommodates the full range of cases of QMI. Here we argue that this approach is superior to other treatments of QMI on offer, both realistic and deflationary, in providing the basis for an intelligible explanation of the interference patterns in the double-slit (...)
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  7. Modelling Deep Indeterminacy.George Darby & Martin Pickup - 2021 - Synthese 198:1685–1710.
    This paper constructs a model of metaphysical indeterminacy that can accommodate a kind of ‘deep’ worldly indeterminacy that arguably arises in quantum mechanics via the Kochen-Specker theorem, and that is incompatible with prominent theories of metaphysical indeterminacy such as that in Barnes and Williams (2011). We construct a variant of Barnes and Williams's theory that avoids this problem. Our version builds on situation semantics and uses incomplete, local situations rather than possible worlds to build a model. We evaluate the resulting (...)
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  8. Causation and Ontic Indeterminacy.Chien-Hsing Ho - 2021 - Res Philosophica 98 (1):43-61.
    In this article, I first introduce an Indian Madhyamaka Buddhist critique of causality and discuss critically a contemporary Humean interpretation of the critique. After presenting a Chinese Madhyamaka interpretation, I resort to an ontological conception of indeterminacy, termed ontic indeterminacy, which draws on Chinese Madhyamaka thought together with Jessica Wilson’s account of metaphysical indeterminacy, to show that the conception is well equipped to unravel two puzzling issues that arise from the critique. I suggest that a world that consists of things (...)
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  9. Plural Metaphysical Supervaluationism.Robert Michels, Cristian Mariani & Giuliano Torrengo - 2021 - Inquiry: An Interdisciplinary Journal of Philosophy.
    It has been argued that quantum mechanics forces us to accept the existence of metaphysical, mind-independent indeterminacy. In this paper we provide an interpretation of the indeterminacy involved in the quantum phenomena in terms of a view that we call Plural Metaphysical Supervaluationism. According to it, quantum indeterminacy is captured in terms of an irreducibly plural relation between the actual world and various misrepresentations of it.
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  10. Future Contingents and the Logic of Temporal Omniscience.Patrick Todd & Brian Rabern - 2021 - Noûs 55 (1):102-127.
    At least since Aristotle’s famous 'sea-battle' passages in On Interpretation 9, some substantial minority of philosophers has been attracted to the doctrine of the open future--the doctrine that future contingent statements are not true. But, prima facie, such views seem inconsistent with the following intuition: if something has happened, then (looking back) it was the case that it would happen. How can it be that, looking forwards, it isn’t true that there will be a sea battle, while also being true (...)
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  11. Quantum metametaphysics.Alessandro Torza - 2021 - Synthese 199 (3-4):1-25.
    Say that metaphysical indeterminacy occurs just when there is a fact such that neither it nor its negation obtains. The aim of this work is to shed light on the issue of whether orthodox quantum mechanics provides any evidence of metaphysical indeterminacy by discussing the logical, semantic, and broadly methodological presuppositions of the debate. I argue that the dispute amounts to a verbal disagreement between classical and quantum logicians, given Eli Hirsch’s account of substantivity; but that it need not be (...)
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  12. Vagueness and the Logic of the World.Zack Garrett - 2020 - Dissertation, University of Nebraska, Lincoln
    In this dissertation, I argue that vagueness is a metaphysical phenomenon---that properties and objects can be vague---and propose a trivalent theory of vagueness meant to account for the vagueness in the world. In the first half, I argue against the theories that preserve classical logic. These theories include epistemicism, contextualism, and semantic nihilism. My objections to these theories are independent of considerations of the possibility that vagueness is a metaphysical phenomenon. However, I also argue that these theories are not capable (...)
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  13. Ontic Indeterminacy: Chinese Madhyamaka in the Contemporary Context.Chien-Hsing Ho - 2020 - Australasian Journal of Philosophy 98 (3):419-433.
    A number of analytical philosophers have recently endorsed the view that the world itself is indeterminate in some respect. Intriguingly, ideas similar to the view are expressed by thinkers from Chinese Madhyamaka Buddhism, which may shed light on the current discussion of worldly indeterminacy. Using as a basis Chinese Madhyamaka thought, together with Jessica Wilson’s account of indeterminacy, I develop an ontological conception of indeterminacy, termed ontic indeterminacy, which centres on two complementary ideas—conclusive indeterminability and provisional determinability. I show that (...)
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  14. Powerful Logic: Prime Matter as Principle of Individuation and Pure Potency.Paul Symington - 2020 - Review of Metaphysics 73 (3):495-529.
    A lean hylomorphism stands as a metaphysical holy grail. An embarrassing feature of traditional hylomorphic ontologies is prime matter. Prime matter is both so basic that it cannot be examined (in principle) and its engagement with the other hylomorphic elements is far from clear. One particular problem posed by prime matter is how it is to be understood both as a principle of individuation for material substances and as pure potency. I present Thomas Aquinas’s way of squeezing some intelligibility out (...)
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  15. The Problem of Future Contingents: Scoping Out a Solution.Patrick Todd - 2020 - Synthese 197 (11):5051-5072.
    Various philosophers have long since been attracted to the doctrine that future contingent propositions systematically fail to be true—what is sometimes called the doctrine of the open future. However, open futurists have always struggled to articulate how their view interacts with standard principles of classical logic—most notably, with the Law of Excluded Middle. For consider the following two claims: Trump will be impeached tomorrow; Trump will not be impeached tomorrow. According to the kind of open futurist at issue, both of (...)
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  16. Structural Indeterminacy.Alessandro Torza - 2020 - Philosophy and Phenomenological Research 101 (2):365-382.
    The threat of ontological deflationism (the view that disagreement about what there is can be non‐substantive) is averted by appealing to realism about fundamental structure—or so tells us Ted Sider. In this paper, the notion of structural indeterminacy is introduced as a particular case of metaphysical indeterminacy; then it is argued that structural indeterminacy is not only compatible with a metaphysics of fundamental structure, but it can even safeguard it from a crucial objection; finally, it is shown that, if there (...)
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  17. Quantum Metaphysical Indeterminacy and Worldly Incompleteness.Alessandro Torza - 2020 - Synthese 197:4251-4264.
    An influential theory has it that metaphysical indeterminacy occurs just when reality can be made completely precise in multiple ways. That characterization is formulated by employing the modal apparatus of ersatz possible worlds. As quantum physics taught us, reality cannot be made completely precise. I meet the challenge by providing an alternative theory which preserves the use of ersatz worlds but rejects the precisificational view of metaphysical indeterminacy. The upshot of the proposed theory is that it is metaphysically indeterminate whether (...)
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  18. Indeterminacy and Failure of Grounding.Bahram Assadian & Jonathan Nassim - 2019 - Theoria (4):1.
    Cases of grounding failure present a puzzle for fundamental metaphysics. Typically, solutions are thought to lie either in adding ontology such as haecceities or in re‐describing the cases by means of the ideology of metaphysical indeterminacy. The controversial status of haecceities has led some to favour metaphysical indeterminacy as the way to solve the puzzle. We consider two further treatments of grounding failure each of which, we argue, is a more plausible alternative. As such, the initial dichotomy is a false (...)
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  19. Animalism and the Vagueness of Composition.Radim Bělohrad - 2019 - Organon F: Medzinárodný Časopis Pre Analytickú Filozofiu 26 (2):207–227.
    Lockean theories of personal identity maintain that we persist by virtue of psychological continuity, and most Lockeans say that we are material things coinciding with animals. Some animalists argue that if persons and animals coincide, they must have the same intrinsic properties, including thinking, and, as a result, there are ‘too many thinkers’ associated with each human being. Further, Lockeans have trouble explaining how animals and persons can be numerically different and have different persistence conditions. For these reasons, the idea (...)
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  20. Constitution, Vague Objects, and Persistence.Radim Bělohrad - 2019 - Prolegomena: Časopis Za Filozofiju 18 (1):5–26.
    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 (...)
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  21. Quantum Metaphysical Indeterminacy.Claudio Calosi & Jessica Wilson - 2019 - Philosophical Studies 176 (10):2599–2627.
    On many currently live interpretations, quantum mechanics violates the classical supposition of value definiteness, according to which the properties of a given particle or system have precise values at all times. Here we consider whether either metaphysical supervaluationist or determinable-based approaches to metaphysical indeterminacy can accommodate quantum metaphysical indeterminacy (QMI). We start by discussing the standard theoretical indicator of QMI, and distinguishing three seemingly different sources of QMI (S1). We then show that previous arguments for the conclusion that metaphysical supervaluationism (...)
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  22. Chance, Determinism, and Unsettledness.Antony Eagle - 2019 - Philosophical Studies 176 (3):781-802.
    A previously unrecognised argument against deterministic chance is introduced. The argument rests on the twin ideas that determined outcomes are settled, while chancy outcomes are unsettled, thus making cases of determined but chancy outcomes impossible. Closer attention to tacit assumptions about settledness makes available some principled lines of resistance to the argument for compatibilists about chance and determinism. Yet the costs of maintaining compatibilism may be higher with respect to this argument than with respect to existing incompatibilist arguments.
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  23. Why the Vagueness Paradox is Amazing.Bryan Frances - 2018 - Think 17 (50):27-38.
    One of the hardest problems in philosophy, one that has been around for over two thousand years without generating any significant consensus on its solution, involves the concept of vagueness: a word or concept that doesn't have a perfectly precise meaning. There is an argument that seems to show that the word or concept simply must have a perfectly precise meaning, as violently counterintuitive as that is. Unfortunately, the argument is usually so compressed that it is difficult to see why (...)
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  24. Against 'Against 'Against Vague Existence''.Roberto Loss - 2018 - In Karen Bennett & Dean Zimmerman (eds.), Oxford Studies in Metaphysics Volume 11. Oxford University Press. pp. 278-287.
    Alessandro Torza argues that Ted Sider’s Lewisian argument against vague existence is insufficient to rule out the possibility of what he calls ‘super-vague existence’, that is the idea that existence is higher-order vague, for all orders. In this chapter it is argued that the possibility of super-vague existence is ineffective against the conclusion of Sider’s argument since super-vague existence cannot be consistently claimed to be a kind of linguistic vagueness. Torza’s idea of super-vague existence seems to be better suited to (...)
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  25. Vague Naturalness as Ersatz Metaphysical Vagueness.Rohan Sud - 2018 - Oxford Studies in Metaphysics 11:243–277.
  26. Determinables and Determinates.Wilson M. Jessica - 2017 - The Stanford Encyclopedia of Philosophy.
    This is a comprehensive discussion of determinables, determinates, and their relation ('determination', for short), covering the historical development of these notions, the theoretical options for understanding them, and certain of their contemporary applications.
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  27. Vagueness in Psychiatry: An Overview.Geert Keil, Lara Keuck & Rico Hauswald - 2017 - In Geert Keil, Lara Keuck & Rico Hauswald (eds.), Vagueness in Psychiatry. Oxford: Oxford University Press. pp. 3-23.
    In psychiatry there is no sharp boundary between the normal and the pathological. Although clear cases abound, it is often indeterminate whether a particular condition does or does not qualify as a mental disorder. For example, definitions of ‘subthreshold disorders’ and of the ‘prodromal stages’ of diseases are notoriously contentious. Philosophers and linguists call concepts that lack sharp boundaries, and thus admit of borderline cases, ‘vague’. This overview chapter reviews current debates about demarcation in psychiatry against the backdrop of key (...)
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  28. Are There Indeterminate States of Affairs? Yes.Jessica M. Wilson - 2017 - In Elizabeth Barnes (ed.), Current Controversies in Metaphysics. Taylor & Francis. pp. 105-119.
    Here I compare two accounts of metaphysical indeterminacy (MI): first, the 'meta-level' approach described by Elizabeth Barnes and Ross Cameron in the companion to this paper, on which every state of affairs (SOA) is itself precise/determinate, and MI is a matter of its being indeterminate which determinate SOA obtains; second, my preferred 'object-level' determinable-based approach, on which MI is a matter of its being determinate---or just plain true---that an indeterminate SOA obtains, where an indeterminate SOA is one whose constitutive object (...)
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  29. Identity in Fiction.Richard Woodward - 2017 - Philosophy and Phenomenological Research 94 (3):646-671.
    Anthony Everett () argues that those who embrace the reality of fictional entities run into trouble when it comes to specifying criteria of character identity. More specifically, he argues that realists must reject natural principles governing the identity and distinctness of fictional characters due to the existence of fictions which leave it indeterminate whether certain characters are identical and the existence of fictions which say inconsistent things about the identities of their characters. Everett's critique has deservedly drawn much attention and (...)
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  30. Causal and Moral Indeterminacy.Sara Bernstein - 2016 - Ratio 29 (4):434-447.
    This paper argues that several sorts of metaphysical and semantic indeterminacy afflict the causal relation. If, as it is plausible to hold, there is a relationship between causation and moral responsibility, then indeterminacy in the causal relation results in indeterminacy of moral responsibility more generally.
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  31. How Barnes and Williams Have Failed to Present an Intelligible Ontic Theory of Vagueness.Ken Akiba - 2015 - Analysis 75 (4):565-573.
    Elizabeth Barnes and J. Robert G. Williams claim to offer a new ontic theory of vagueness, the kind of theory which considers vagueness to exist not in language but in reality. This paper refutes their claim. The possible worlds they employ are ersatz possible worlds, i.e., sets of sentences. Unlike reality, they don’t contain concrete and often material objects. As a result, there is nothing in Barnes and Williams’s description of the theory that the semanticist cannot or does not accept. (...)
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  32. What in the World Is Semantic Indeterminacy?David E. Taylor & Alexis Burgess - 2015 - Analytic Philosophy 56 (4):298-317.
    Discussions of “indeterminacy” customarily distinguish two putative types: semantic indeterminacy (SI)—indeterminacy that’s somehow the product of the semantics of our words/concepts—and metaphysical indeterminacy (MI)—indeterminacy that exists as a mind/language-independent feature of reality itself. A popular and influential thought among philosophers is that all indeterminacy must be SI. In this paper we challenge this thought. Our challenge is guided by the question: What, exactly, does it take for a case of indeterminacy to count as SI? We argue that the only satisfactory (...)
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  33. A Defense of Indeterminate Distinctness.Ken Akiba - 2014 - Synthese 191 (15):3557-3573.
    On the one hand, philosophers have presented numerous apparent examples of indeterminate individuation, i.e., examples in which two things are neither determinately identical nor determinately distinct. On the other hand, some have argued against even the coherence of the very idea of indeterminate individuation. This paper defends the possibility of indeterminate individuation against Evans’s argument and some other arguments. The Determinacy of Identity—the thesis that identical things are determinately identical—is distinguished from the Determinacy of Distinctness—the thesis that distinct things are (...)
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  34. Metasemantics and Metaphysical Indeterminacy.Michael Caie - 2014 - In Alexis Burgess & Brett Sherman (eds.), Metasemantics: New Essays on the Foundations of Meaning. Oxford University Press.
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  35. Castles Built on Clouds: Vague Identity and Vague Objects.Benjamin L. Curtis & Harold W. Noonan - 2014 - In Ken Akiba & Ali Abasnezhad (eds.), Vague Objects and Vague Identity: New Essays on Ontic Vagueness. Springer. pp. 305-326.
    Can identity itself be vague? Can there be vague objects? Does a positive answer to either question entail a positive answer to the other? In this paper we answer these questions as follows: No, No, and Yes. First, we discuss Evans’s famous 1978 argument and argue that the main lesson that it imparts is that identity itself cannot be vague. We defend the argument from objections and endorse this conclusion. We acknowledge, however, that the argument does not by itself establish (...)
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  36. Ein bisschen Embryo? Begriffliche, ontologische und normative Überlegungen zur totipotenzbasierten Legaldefinition von 'Embryo'.Geert Keil - 2014 - In Thomas Heinemann Hans-Georg Dederer & Tobias Cantz (eds.), Entwicklungsbiologische Totipotenz in Ethik und Recht. Zur normativen Bewertung von totipotenten menschlichen Zellen. pp. 251-287.
    Im deutschen Embryonenschutz- und im Stammzellgesetz sind zwei Rechtsbegriffe von 'Embryo' definiert worden, die sich auf die Zelleigenschaft der Totipotenz stützen und dieser damit eine ontologische und normative Bedeutung beimessen, die angesichts der vielfältigen divergierenden Intuitionen und Argumente zur sogenannten Statusfrage nicht leicht zu rechtfertigen ist. Der vorliegende Beitrag diskutiert die Schwierigkeiten, den ontologischen, moralischen und rechtlichen Status totipotenter Humanzellen plausibel zu begründen, und argumentiert insbesondere, dass zwischen Grundannahmen der Substanzontologie und naturphilosophischen Kontinuitätsüberlegungen unaufhebbare Spannungen bestehen, die der Gesetzgeber durch (...)
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  37. Metaphysically Indeterminate Existence.Elizabeth Barnes - 2013 - Philosophical Studies 166 (3):495-510.
    Sider (Four-dimensionalism 2001; Philos Stud 114:135–146, 2003; Nous 43:557–567, 2009) has developed an influential argument against indeterminacy in existence. In what follows, I argue that the defender of metaphysical forms of indeterminate existence has a unique way of responding to Sider’s argument. The response I’ll offer is interesting not only for its applicability to Sider’s argument, but also for its broader implications; responding to Sider helps to show both how we should think about precisification in the context of metaphysical indeterminacy (...)
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  38. Metaphysical Vagueness and Metaphysical Indeterminacy.Matti Eklund - 2013 - Metaphysica 14 (2):165-179.
    The topic of this paper is whether there is metaphysical vagueness. It is shown that it is important to distinguish between the general phenomenon of indeterminacy and the more narrow phenomenon of vagueness (the phenomenon that paradigmatically rears its head in sorites reasoning). Relatedly, it is important to distinguish between metaphysical indeterminacy and metaphysical vagueness. One can wish to allow metaphysical indeterminacy but rule out metaphysical vagueness. As is discussed in the paper, central argument against metaphysical vagueness, like those of (...)
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  39. Against the Modal Argument.Christopher S. Gifford - 2013 - Erkenntnis 78 (3):627-646.
    The relationship between alethic modality and indeterminacy is yet to be clarified. A modal argument—an argument that appeals to alethic modality—against vague objects given by Joseph Moore offers a potential clarification of the relationship; it is proposed that there are cases for which the following holds: if it is indeterminate whether A = B then it is possible that it is determinate that A = B. However, the argument faces three problems. The problems remove the argument’s threat against vague objects (...)
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  40. Introduction: Vagueness and Ontology.Geert Keil - 2013 - Metaphysica 14 (2):149-164.
    The article introduces a special issue of the journal _Metaphysica_ on vagueness and ontology. The conventional view has it that all vagueness is semantic or representational. Russell, Dummett, Evans and Lewis, inter alia, have argued that the notion of “ontic” or “metaphysical” vagueness is not even intelligible. In recent years, a growing minority of philosophers have tried to make sense of the notion and have spelled it out in various ways. The article gives an overview and relates the idea of (...)
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  41. Interrelations and Dissimilarities Between Distinct Approaches to Ontic Vagueness.Marc Andree Weber - 2013 - Metaphysica 14 (2):181-195.
    This paper outlines the often striking parallels of various approaches to ontic vagueness, as well as their even more striking differences. Though circling around the same idea, some of these approaches were developed to solve quite diverse theoretical problems and encounter different challenges. In addition to these difficulties, the frequently disregarded epistemological problems of all theories of ontic vagueness turn out to be even more serious under critical scrutiny. The same holds for the difficulties of deciding, for every case of (...)
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  42. A Determinable-Based Account of Metaphysical Indeterminacy.Jessica M. Wilson - 2013 - Inquiry: An Interdisciplinary Journal of Philosophy 56 (4):359-385.
    ABSTRACT Many phenomena appear to be indeterminate, including material macro-object boundaries and certain open future claims. Here I provide an account of indeterminacy in metaphysical, rather than semantic or epistemic, terms. Previous accounts of metaphysical indeterminacy have typically taken this to involve its being indeterminate which of various determinate states of affairs obtain. On my alternative account, MI involves its being determinate that an indeterminate state of affairs obtains. I more specifically suggest that MI involves an object's having a determinable (...)
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  43. The Problem with Truthmaker-Gap Epistemicism.Mark Jago - 2012 - Thought: A Journal of Philosophy 1 (4):320-329.
    Epistemicism about vagueness is the view that vagueness, or indeterminacy, is an epistemic matter. Truthmaker-gap epistemicism is the view that indeterminate truths are indeterminate because their truth is not grounded by any worldly fact. Both epistemicism in general and truthmaker-gap epistemicism originated in Roy Sorensen's work on vagueness. My aim in this paper is to give a characterization of truthmaker-gap epistemicism and argue that the view is incompatible with higher-order vagueness: vagueness in whether some case of the form ‘it is (...)
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  44. A Theory of Metaphysical Indeterminacy.Elizabeth Barnes & J. Robert G. Williams - 2011 - In Karen Bennett & Dean W. Zimmerman (eds.), Oxford Studies in Metaphysics volume 6. Oxford University Press. pp. 103-148.
    If the world itself is metaphysically indeterminate in a specified respect, what follows? In this paper, we develop a theory of metaphysical indeterminacy answering this question.
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  45. Being Metaphysically Unsettled: Barnes and Williams on Metaphysical Indeterminacy and Vagueness.Matti Eklund - 2011 - Oxford Studies in Metaphysics 6:6.
    This chapter discusses the defence of metaphysical indeterminacy by Elizabeth Barnes and Robert Williams and discusses a classical and bivalent theory of such indeterminacy. Even if metaphysical indeterminacy arguably is intelligible, Barnes and Williams argue in favour of it being so and this faces important problems. As for classical logic and bivalence, the chapter problematizes what exactly is at issue in this debate. Can reality not be adequately described using different languages, some classical and some not? Moreover, it is argued (...)
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  46. Commentary on Kathrin Koslicki’s The Structure of Objects.Tuomas E. Tahko - 2011 - Humana Mente 4 (19):197-204.
    This is a critical commentary on Kathrin Koslicki's book The Structure of Objects (OUP, 2008).
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  47. Metaphysical Indeterminacy and Vague Existence.Richard Woodward - 2011 - Oxford Studies in Metaphysics 6:183-197.
    One pressing question facing Barnes andWilliams is that of which vari- eties of metaphysical indeterminacy can be can accommodated within their framework. In what remains, I shall examine whether their framework can allow that it sometimes metaphysically indeterminate whether an object exists. I shall begin by outlining an argument, due to Theodore Sider, to the conclusion that vague existence is impossible.
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  48. Arguments Against Metaphysical Indeterminacy and Vagueness.Elizabeth Barnes - 2010 - Philosophy Compass 5 (11):953-964.
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  49. Ontic Vagueness: A Guide for the Perplexed.Elizabeth Barnes - 2010 - Noûs 44 (4):601-627.
    In this paper I develop a framework for understanding ontic vagueness. The project of the paper is two-fold. I first outline a definitional account of ontic vagueness – one that I think is an improvement on previous attempts because it remains neutral on other, independent metaphysical issues. I then develop one potential manifestation of that basic definitional structure. This is a more robust (and much less neutral) account which gives a fully classical explication of ontic vagueness via modal concepts. The (...)
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  50. Quantum Mechanics and Metaphysical Indeterminacy.George Darby - 2010 - Australasian Journal of Philosophy 88 (2):227-245.
    There has been recent interest in formulating theories of non-representational indeterminacy. The aim of this paper is to clarify the relevance of quantum mechanics to this project. Quantum-mechanical examples of vague objects have been offered by various authors, displaying indeterminate identity, in the face of the famous Evans argument that such an idea is incoherent. It has also been suggested that the quantum-mechanical treatment of state-dependent properties exhibits metaphysical indeterminacy. In both cases it is important to consider the details of (...)
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