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  1. 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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  • Against Quantum Indeterminacy.David Glick - 2017 - Thought: A Journal of Philosophy 6 (3):204-213.
    A growing literature is premised on the claim that quantum mechanics provides evidence for metaphysical indeterminacy. But does it? None of the currently fashionable realist interpretations involve fundamental indeterminacy and the ‘standard interpretation’, to the extent that it can be made out, doesn't require indeterminacy either.
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  • Vague Objects and Vague Identity: New Essays on Ontic Vagueness.Ken Akiba & Ali Abasnezhad (eds.) - 2014 - Dordrecht, Netherland: Springer.
    This unique anthology of new, contributed essays offers a range of perspectives on various aspects of ontic vagueness. It seeks to answer core questions pertaining to onticism, the view that vagueness exists in the world itself. The questions to be addressed include whether vague objects must have vague identity, and whether ontic vagueness has a distinctive logic, one that is not shared by semantic or epistemic vagueness. The essays in this volume explain the motivations behind onticism, such as the plausibility (...)
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  • 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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  • On the Plurality of Worlds.David K. Lewis - 1986 - Revue Philosophique de la France Et de l'Etranger 178 (3):388-390.
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  • The Metaphysics Within Physics.Tim Maudlin - 2007 - Oxford University Press.
    A modest proposal concerning laws, counterfactuals, and explanations - - Why be Humean? -- Suggestions from physics for deep metaphysics -- On the passing of time -- Causation, counterfactuals, and the third factor -- The whole ball of wax -- Epilogue : a remark on the method of metaphysics.
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  • Physics and Philosophy: The Revolution in Modern Science.Werner Heisenberg - 1958 - London, England: Prometheus Books.
  • The Character of Physical Law.Richard Feynman - 1965 - MIT Press.
    The law of gravitation, an example of physical law The relation of mathematics to physics The great conservation principles Symmetry in physical law The distinction of past and future Probability and uncertainty: the quantum mechanical view of nature Seeking new laws.
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  • Physics and Philosophy: The Revolution in Modern Science.Werner Heisenberg - 1958 - New York: Harper.
    The seminal work by one of the most important thinkers of the twentieth century, Physics and Philosophy is Werner Heisenberg's concise and accessible narrative of the revolution in modern physics, in which he played a towering role. The outgrowth of a celebrated lecture series, this book remains as relevant, provocative, and fascinating as when it was first published in 1958. A brilliant scientist whose ideas altered our perception of the universe, Heisenberg is considered the father of quantum physics; he is (...)
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  • Plural Logic.Alex Oliver & Timothy John Smiley - 2013 - Oxford, England: Oxford University Press UK.
    Alex Oliver and Timothy Smiley provide a new account of plural logic. They argue that there is such a thing as genuinely plural denotation in logic, and expound a framework of ideas that includes the distinction between distributive and collective predicates, the theory of plural descriptions, multivalued functions, and lists.
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  • Worldly Indeterminacy: A Rough Guide.Nicholas J. J. Smith & Gideon Rosen - 2004 - In Frank Jackson & Graham Priest (eds.), Lewisian Themes: The Philosophy of David K. Lewis. pp. 196-209.
    This paper defends the idea that there might be vagueness or indeterminacy in the world itself---as opposed to merely in our representations of the world---against the charges of incoherence and unintelligibility. First we consider the idea that the world might contain vague *properties and relations*; we show that this idea is already implied by certain well-understood views concerning the semantics of vague predicates (most notably the fuzzy view). Next we consider the idea that the world might contain vague *objects*; we (...)
     
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  • Vagueness.Timothy Williamson - 1994 - London and New York: Routledge.
    Vagueness provides the first comprehensive examination of a topic of increasing importance in metaphysics and the philosophy of logic and language. Timothy Williamson traces the history of this philosophical problem from discussions of the heap paradox in classical Greece to modern formal approaches such as fuzzy logic. He illustrates the problems with views which have taken the position that standard logic and formal semantics do not apply to vague language, and defends the controversial realistic view that vagueness is a kind (...)
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  • On the Plurality of Worlds.David Lewis - 1986 - Wiley-Blackwell.
    This book is a defense of modal realism; the thesis that our world is but one of a plurality of worlds, and that the individuals that inhabit our world are only a few out of all the inhabitants of all the worlds. Lewis argues that the philosophical utility of modal realism is a good reason for believing that it is true.
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  • Theories of Vagueness.Rosanna Keefe - 2000 - Cambridge University Press.
    Most expressions in natural language are vague. But what is the best semantic treatment of terms like 'heap', 'red' and 'child'? And what is the logic of arguments involving this kind of vague expression? These questions are receiving increasing philosophical attention, and in this book, first published in 2000, Rosanna Keefe explores the questions of what we should want from an account of vagueness and how we should assess rival theories. Her discussion ranges widely and comprehensively over the main theories (...)
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  • Situations and Attitudes.Jon Barwise & John Perry - 1983 - MIT Press.
    This volume tackles the slippery subject of 'meaning'.
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  • Singular Terms, Truth-Value Gaps, and Free Logic.Bas Van Fraassen - 1966 - Journal of Philosophy 63 (17):481-495.
  • Vagueness, Truth and Logic.Kit Fine - 1975 - Synthese 30 (3-4):265-300.
    This paper deals with the truth-Conditions and the logic for vague languages. The use of supervaluations and of classical logic is defended; and other approaches are criticized. The truth-Conditions are extended to a language that contains a definitely-Operator and that is subject to higher order vagueness.
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  • 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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  • What is Orthodox Quantum Mechanics?David Wallace - 2019 - In Alberto Cordero (ed.), Philosophers Look at Quantum Mechanics. Springer Verlag.
    What is called ``orthodox'' quantum mechanics, as presented in standard foundational discussions, relies on two substantive assumptions --- the projection postulate and the eigenvalue-eigenvector link --- that do not in fact play any part in practical applications of quantum mechanics. I argue for this conclusion on a number of grounds, but primarily on the grounds that the projection postulate fails correctly to account for repeated, continuous and unsharp measurements and that the eigenvalue-eigenvector link implies that virtually all interesting properties are (...)
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  • Situations and Attitudes.Jon Barwise & John Perry - 1981 - Journal of Philosophy 78 (11):668-691.
  • Indeterminate Identities, Supervaluationism, and Quantifiers.Achille C. Varzi - 2020 - Analytic Philosophy 61 (3):218-235.
    I am a friend of supervaluationism. A statement lacks a definite truth value if, and only if, it comes out true on some admissible ways of precisifying the semantics of the relevant vocabulary and false on others. In this paper, I focus on the special case of identity statements. I take it that such statements, too, may occasionally suffer a truth-value gap, including philosophically significant instances. Yet there is a potentially devastating objection that can be raised against the supervaluationist treatment (...)
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  • Vagueness in the World.Ken Akiba - 2004 - Noûs 38 (3):407–429.
  • Vagueness.Timothy Williamson - 1995 - British Journal for the Philosophy of Science 46 (4):589-601.
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  • Indeterminist Time and Truth-Value Gaps.Richmond H. Thomason - 1970 - Theoria 36 (3):264-281.
  • Metaphysical Indeterminacy, Properties, and Quantum Theory.Alisa Bokulich - 2014 - Res Philosophica 91 (3):449-475.
    It has frequently been suggested that quantum mechanics may provide a genuine case of ontic vagueness or metaphysical indeterminacy. However, discussions of quantum theory in the vagueness literature are often cursory and, as I shall argue, have in some respects been misguided. Hitherto much of the debate over ontic vagueness and quantum theory has centered on the “indeterminate identity” construal of ontic vagueness, and whether the quantum phenomenon of entanglement produces particles whose identity is indeterminate. I argue that this way (...)
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  • Interpreting the Many-Worlds Interpretation.David Albert & Barry Loewer - 1988 - Synthese 77 (November):195-213.
  • Quantum Entanglement, Bohmian Mechanics, and Humean Supervenience.Elizabeth Miller - 2014 - Australasian Journal of Philosophy 92 (3):567-583.
    David Lewis is a natural target for those who believe that findings in quantum physics threaten the tenability of traditional metaphysical reductionism. Such philosophers point to allegedly holistic entities they take both to be the subjects of some claims of quantum mechanics and to be incompatible with Lewisian metaphysics. According to one popular argument, the non-separability argument from quantum entanglement, any realist interpretation of quantum theory is straightforwardly inconsistent with the reductive conviction that the complete physical state of the world (...)
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  • Deep Metaphysical Indeterminacy.Bradford Skow - 2010 - Philosophical Quarterly 60 (241):851 - 858.
    A recent theory of metaphysical indeterminacy says that metaphysical indeterminacy is multiple actuality: there is metaphysical indeterminacy when there are many 'complete precisifications of reality'. But it is possible for there to be metaphysical indeterminacy even when it is impossible to precisify reality completely. The orthodox interpretation of quantum mechanics illustrates this possibility. So this theory of metaphysical indeterminacy is not adequate.
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  • 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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  • Are Our Logical and Mathematical Concepts Highly Indeterminate?Hartry Field - 1994 - Midwest Studies in Philosophy 19 (1):391-429.
  • The Foundations of Two-Dimensional Semantics.David J. Chalmers - 2006 - In Manuel Garcia-Carpintero & Josep Macia (eds.), Two-Dimensional Semantics: Foundations and Applications. Oxford University Press. pp. 55-140.
    Why is two-dimensional semantics important? One can think of it as the most recent act in a drama involving three of the central concepts of philosophy: meaning, reason, and modality. First, Kant linked reason and modality, by suggesting that what is necessary is knowable a priori, and vice versa. Second, Frege linked reason and meaning, by proposing an aspect of meaning (sense) that is constitutively tied to cognitive signi?cance. Third, Carnap linked meaning and modality, by proposing an aspect of meaning (...)
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  • Review of *The Metaphysics Within Physics* by Tim Maudlin. [REVIEW]Chris Daly - 2009 - Analysis 69 (2):374-375.
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  • Quantum Indeterminacy.Claudio Calosi & Cristian Mariani - 2021 - Philosophy Compass 16 (4):e12731.
    This paper explores quantum indeterminacy, as it is operative in the failure of value‐definiteness for quantum observables. It first addresses questions about its existence, its nature, and its relations to extant quantum interpretations. Then, it provides a critical discussions of the main accounts of quantum indeterminacy.
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  • Vagueness as a Modality.Ken Akiba - 2000 - Philosophical Quarterly 50 (200):359-370.
  • Supervaluationism and Its Logics.Achille C. Varzi - 2007 - Mind 116 (463):633-676.
    What sort of logic do we get if we adopt a supervaluational semantics for vagueness? As it turns out, the answer depends crucially on how the standard notion of validity as truth preservation is recasted. There are several ways of doing that within a supervaluational framework, the main alternative being between “global” construals (e.g., an argument is valid iff it preserves truth-under-all-precisifications) and “local” construals (an argument is valid iff, under all precisifications, it preserves truth). The former alternative is by (...)
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  • 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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  • Indefiniteness of Mathematical Objects.Ken Akiba - 2000 - Philosophia Mathematica 8 (1):26--46.
    The view that mathematical objects are indefinite in nature is presented and defended, hi the first section, Field's argument for fictionalism, given in response to Benacerraf's problem of identification, is closely examined, and it is contended that platonists can solve the problem equally well if they take the view that mathematical objects are indefinite. In the second section, two general arguments against the intelligibility of objectual indefiniteness are shown erroneous, hi the final section, the view is compared to mathematical structuralism, (...)
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  • Relational Quantum Mechanics.Carlo Rovelli - 1996 - International Journal of Theoretical Physics 35 (8):1637--1678.
  • 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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  • Vagueness.Timothy Williamson - 1997 - Philosophy and Phenomenological Research 57 (4):921-928.
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  • 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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  • Three Measurement Problems.Tim Maudlin - 1995 - Topoi 14 (1):7-15.
    The aim of this essay is to distinguish and analyze several difficulties confronting attempts to reconcile the fundamental quantum mechanical dynamics with Born''s rule. It is shown that many of the proposed accounts of measurement fail at least one of the problems. In particular, only collapse theories and hidden variables theories have a chance of succeeding, and, of the latter, the modal interpretations fail. Any real solution demands new physics.
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  • Can There Be Vague Objects?Gareth Evans - 2004 - In Tim Crane & Katalin Farkas (eds.), Metaphysics: A Guide and Anthology. Oxford University Press.
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  • Can There Be Vague Objects?Gareth Evans - 1978 - Analysis 38 (4):208.
  • Quantum Relational Indeterminacy.Claudio Calosi & Cristian Mariani - 2020 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 71:158-169.
  • Worldly Indeterminacy: A Rough Guide.Nicholas J. J. Smith & Gideon Rosen - 2004 - Australasian Journal of Philosophy 82 (Issue in Honour of David Lewis):185-198.
    This paper defends the idea that there might be vagueness or indeterminacy in the world itself---as opposed to merely in our representations of the world---against the charges of incoherence and unintelligibility. First we consider the idea that the world might contain vague *properties and relations*; we show that this idea is already implied by certain well-understood views concerning the semantics of vague predicates (most notably the fuzzy view). Next we consider the idea that the world might contain vague *objects*; we (...)
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  • Theories of Vagueness.Rosanna Keefe - 2003 - Philosophy and Phenomenological Research 67 (2):491-494.
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  • Theories of Vagueness.Rosanna Keefe - 2003 - Philosophical Quarterly 53 (212):460-462.
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  • The Open Future: Bivalence, Determinism and Ontology.Elizabeth Barnes & Ross Cameron - 2008 - Philosophical Studies 146 (2):291-309.
    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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  • Supervaluations Debugged.Nicholas Asher, Josh Dever & Chris Pappas - 2009 - Mind 118 (472):901-933.
    Supervaluational accounts of vagueness have come under assault from Timothy Williamson for failing to provide either a sufficiently classical logic or a disquotational notion of truth, and from Crispin Wright and others for incorporating a notion of higher-order vagueness, via the determinacy operator, which leads to contradiction when combined with intuitively appealing ‘gap principles’. We argue that these criticisms of supervaluation theory depend on giving supertruth an unnecessarily central role in that theory as the sole notion of truth, rather than (...)
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