About this topic
Summary This is a catch-all category for theories of modality which do not fall naturally into the other categories. Notably, it includes dispositional theories of modality.
Key works Fine 1994 reduces modality to essence. Vetter 2010 reduces modality to dispositionality.
Related categories

173 found
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1 — 50 / 173
  1. Possible Worlds and Possibilities of Substances.Vladislav Terekhovich - manuscript
    Despite the notions of possible worlds and substances are very important subjects of contemporary metaphysics, there are relatively few attempts to combine these in a united framework. This paper considers the metaphysical model of the origins and the evolution of possible worlds that occurs from an interaction between substances. I involve Leibniz’s doctrine of the striving possibles that every possibility of substance has its own essence and tendency towards existence. It is supposed that the activities of substances are constantly aimed (...)
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  2. Modal Pluralism and Higher-Order Logic.Justin Clarke-Doane & William McCarthy - forthcoming - Philosophical Perspectives.
    In this article, we discuss a simple argument that modal metaphysics is misconceived, and responses to it. Unlike Quine’s, this argument begins with the banal observation that there are different candidate interpretations of the predicate ‘could have been the case’. This is analogous to the observation that there are different candidate interpretations of the predicate ‘is a member of’. The argument then infers that the search for metaphysical necessities is misguided in much the way the ‘set-theoretic pluralist’ (Clarke-Doane & Hamkins (...)
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  3. Essence, Modality, and Identity.Fabrice Correia & Alexander Skiles - forthcoming - Mind:fzab017.
    In a recent article forthcoming in *Mind*, Leech (2020) presents a challenge for essentialist accounts of metaphysical modality: why should it be that essences imply corresponding necessities? Leech’s main focus is to argue that one cannot overcome the challenge by utilizing an account of essence in terms of generalized identity due to Correia and Skiles (2019), on pain of circularity. In this reply, we will show how to use identity-based essentialism to bridge ‘epistemic’ and ‘explanatory’ understandings of this alleged essence-to-necessity (...)
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  4. Dispositionalism’s (grand)daddy issues: time travelling and perfect masks.Giannini Giacomo & Donatella Donati - forthcoming - Analysis:1-9.
    There is a tension between Dispositionalism –– the view that all metaphysical modality is grounded in actual irreducible dispositional properties –– and the possibility of time travel. This is due to the fact that Dispositionalism makes it much harder to solve a potentiality-based version of the grandfather paradox. We first present a potentiality-based version of the grandfather paradox, stating that the following theses are inconsistent: 1) time travel is possible, 2) powers fully ground modality, 3) self-defeating actions are impossible, 4) (...)
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  5. Modality and Essence in Contemporary Metaphysics.Kathrin Koslicki - forthcoming - In Yitzhak Melamed & Samuel Newlands (eds.), Modality: A Conceptual History. Oxford, UK:
    Essentialists hold that at least a certain range of entities can be meaningfully said to have natures, essences, or essential features independently of how these entities are described, conceptualized or otherwise placed with respect to our specifically human interests, purposes or activities. Modalists about essence, on the one hand, take the position that the essential truths are a subset of the necessary truths and the essential properties of entities are included among their necessary properties. Non-modalists about essence, on the other (...)
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  6. Metaphysics: The Science of Essence?Kathrin Koslicki - forthcoming - In Javier Cumpa (ed.), The Question of Ontology. Oxford, UK:
    Aristotle's concern with essence and definition, as central to the subject-matter of metaphysics, is shared by contemporary neo-Aristotelian philosophers. For E. J. Lowe metaphysics is an a priori inquiry that is “perhaps most perspicuously characterized as the science of essence” (Lowe (2008), p. 34). Kit Fine holds that “the concept [of essence] may be used to characterize what the subject [of metaphysics], or at least part of it, is about” (Fine (1994), p. 1). But whether metaphysics, and metaphysics alone, can (...)
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  7. Extended Dispositionalism and Determinism.Jonas Werner - forthcoming - Ergo: An Open Access Journal of Philosophy.
    Modal dispositionalists hold that dispositions provide the foundation of metaphysical necessity and possibility. According to the kind of modal dispositionalism that can be found in the present literature, a proposition p is possible just in case some things are disposed to be such that p. In the first part of this paper I show that combining this classic form of dispositionalism with the assumptions that the laws of nature are necessary and deterministic and that all dispositions are forward-looking in time (...)
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  8. New powers for Dispositionalism.Giacomo Giannini - 2022 - Synthese 200 (384):1-30.
    Establishing Dispositionalism as a viable theory of modality requires the successful fulfilment of two tasks: showing that all modal truths can be derived from truths about actual powers, and offering a suitable metaphysics of powers. These two tasks are intertwined: difficulties in one can affect the chances of success in the other. In this paper, I generalise an objection to Dispositionalism by Jessica Leech and argue that the theory in its present form is ill-suited to account for de re truths (...)
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  9. Möglichkeit ohne mögliche Welten.Barbara Vetter - 2022 - Philosophisches Jahrbuch 129 (1):115-137.
  10. Necessity by accident.Nathan Wildman - 2022 - Argumenta 7 (2):323-335.
    General consensus has it that contingencies lack the requisite modal umph to serve as explanations for the modal status of necessities. The central aim of this paper is to show that this received opinion is incorrect: contingent necessity-makers are in fact possible. To do so, I identify certain conditions the satisfaction of which entail the possibility of contingent necessity-makers. I then argue for two broad instances where these conditions are satisfied. Consequently, the associated necessities in fact have contingent necessity-makers.
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  11. Necessity First.Alastair Wilson - 2022 - Argumenta 14.
    My topic in this paper is the relationships of metaphysical priority which might hold between the different alethic modal statuses—necessity, contingency, possibility and impossibility. In particular, I am interested in exploring the view that the necessity of necessities is ungrounded while the contingency of contingencies is grounded—a scenario I call ‘necessity first’. I will explicate and scrutinize the contrast between necessity first and its ‘contingency first’ contrary, and then compare both views with ‘multimodal’ and ‘amodal’ alternatives, drawing on David Lewis’s (...)
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  12. Causal Necessitation and Dispositional Modality.Stavros Ioannidis, Vassilis Livanios & Stathis Psillos - 2021 - Philosophia 49 (1):289-298.
    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 (...)
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  13. Naturalización de la Metafísica Modal.Carlos Romero - 2021 - Dissertation, National Autonomous University of Mexico
    ⦿ In my dissertation I introduce, motivate and take the first steps in the realization of, the project of naturalising modal metaphysics: the transformation of the field into a chapter of the philosophy of science rather than speculative, autonomous metaphysics. ⦿ In the introduction, I explain the concept of naturalisation that I apply throughout the dissertation, which I argue to be an improvement on Ladyman and Ross' proposal for naturalised metaphysics. I also object to Williamson's proposal that modal metaphysics --- (...)
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  14. Possible in Philosophy.Antoine Taillard - 2021 - The Palgrave Encyclopedia of the Possible.
    Within philosophy, the word “possible” is generally used to speak about either of the following. (1) Possibility: the notion that is expressed by sentences such as “It is possible that there are green cats,” “She may become the best surgeon in the city,” and “Our team can win the race.” Among the features of possibility, three are of particular interest to philosophers: it is closely related with necessity, contingency, and actuality; it is not unified, but comes in multiple varieties; it (...)
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  15. Essence, Potentiality, and Modality.Barbara Vetter - 2021 - Mind 130 (519):833-861.
    According to essentialism, metaphysical modality is founded in the essences of things, where the essence of a thing is roughly akin to its real definition. According to potentialism (also known as dispositionalism), metaphysical modality is founded in the potentialities of things, where a potentiality is roughly the generalized notion of a disposition. Essentialism and potentialism have much in common, but little has been written about their relation to each other. The aim of this paper is to understand better the relations (...)
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  16. Contingent Objects, Contingent Propositions, and Essentialism.Jonas Werner - 2021 - Mind 130 (520):1283-1294.
    Trevor Teitel (2017) has recently argued that combining the assumption that modality reduces to essence with the assumption that possibly some objects contingently exist leads to problems if one wishes to uphold that the logic of metaphysical modality is S5. In this paper I will argue that there is a way for the essentialist to evade the problem described by Teitel. The proposed solution crucially involves the assumption that some propositions possibly fail to exist. I will show how this assumption (...)
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  17. Plenitude and necessarily unmanifested dispositions.Jonas Werner - 2021 - Thought: A Journal of Philosophy 10 (3):169-177.
    The principle of plenitude says that every material object coincides with abundantly many further objects that differ in their modal profiles. A necessarily unmanifested disposition is a disposition that necessarily does not manifest. This paper argues that if the principle of plenitude holds, then there are some necessarily unmanifested dispositions. These necessarily unmanifested dispositions will be argued to evade some objections against the cases of necessarily unmanifested dispositions put forward by Carrie Jenkins and Daniel Nolan.
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  18. Can Al-Ghazali's Conception of Modality Propose a Solution to Rowe's Argument against Divine Freedom?Seyma Yazici - 2021 - Res Philosophica 98 (2):331-351.
    William L. Rowe poses a dilemma between God’s freedom and essential moral goodness by arguing that God cannot satisfy the arguably accepted condition for libertarian freedom, namely, ability to do otherwise. Accordingly, if God does a morally good action A freely, then there is at least a possible world in which God refrains from doing A and thereby does the morally wrong action. And if God does a morally wrong action in one of the possible worlds, he ceases to be (...)
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  19. Grounding grounds necessity.Julio De Rizzo - 2020 - Analysis 80 (4):639-647.
    Drawing from extensions of existing ideas in the logic of ground, a novel account of the grounds of necessity is presented, the core of which states that necessary truths are necessary because they stand in specific grounding connections.
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  20. Essential Properties are Super-Explanatory: Taming Metaphysical Modality.Marion Godman, Antonella Mallozzi & David Papineau - 2020 - Journal of the American Philosophical Association (3):1-19.
    This paper aims to build a bridge between two areas of philosophical research, the structure of kinds and metaphysical modality. Our central thesis is that kinds typically involve super-explanatory properties, and that these properties are therefore metaphysically essential to natural kinds. Philosophers of science who work on kinds tend to emphasize their complexity, and are generally resistant to any suggestion that they have “essences”. The complexities are real enough, but they should not be allowed to obscure the way that kinds (...)
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  21. Categoricity and Possibility. A Note on Williamson's Modal Monism.Iulian D. Toader - 2020 - In The Logica Yearbook 2019. London: College Publications. pp. 221-231.
    The paper sketches an argument against modal monism, more specifically against the reduction of physical possibility to metaphysical possibility. The argument is based on the non-categoricity of quantum logic.
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  22. Replies.Barbara Vetter - 2020 - Philosophical Inquiries 1 (8):199-222.
    This paper responds to the contributions by Alexander Bird, Nathan Wildman, David Yates, Jennifer McKitrick, Giacomo Giannini & Matthew Tugby, and Jennifer Wang. I react to their comments on my 2015 book Potentiality: From Dispositions to Modality, and in doing so expands on some of the arguments and ideas of the book.
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  23. Potential problems? Some issues with Vetter's potentiality account of modality.Nathan Wildman - 2020 - Philosophical Inquiry 8 (1):167-184.
    As Vetter says, we are at the “beginning of the debate, not the end” (2015: 300) when it comes to evaluating her potentiality-based account of metaphysical modality. This paper contributes to this developing debate by highlighting three problems for Vetter’s account. Specifically, I begin (§1) by articulating some relevant details of Vetter’s potentiality-based view. This leads to the first issue (§2), concerning unclarity in the idea of degrees of potentiality. Similarly, the second issue (§3) raises trouble for Vetter’s proposed individuation (...)
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  24. A Strange Kind of Power: Vetter on the Formal Adequacy of Dispositionalism.David Yates - 2020 - Philosophical Inquiries 8 (1):97-116.
    According to dispositionalism about modality, a proposition <p> is possible just in case something has, or some things have, a power or disposition for its truth; and <p> is necessary just in case nothing has a power for its falsity. But are there enough powers to go around? In Yates (2015) I argued that in the case of mathematical truths such as <2+2=4>, nothing has the power to bring about their falsity or their truth, which means they come out both (...)
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  25. Metaphysical and absolute possibility.Justin Clarke-Doane - 2019 - Synthese 198 (Suppl 8):1861-1872.
    It is widely alleged that metaphysical possibility is “absolute” possibility Conceivability and possibility, Clarendon, Oxford, 2002, p 16; Stalnaker, in: Stalnaker Ways a world might be: metaphysical and anti-metaphysical essays, Oxford University Press, Oxford, 2003, pp 201–215; Williamson in Can J Philos 46:453–492, 2016). Kripke calls metaphysical necessity “necessity in the highest degree”. Van Inwagen claims that if P is metaphysically possible, then it is possible “tout court. Possible simpliciter. Possible period…. possib without qualification.” And Stalnaker writes, “we can agree (...)
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  26. Modality is Not Explainable by Essence.Carlos Romero - 2019 - Philosophical Quarterly 69 (274):121-141.
    Some metaphysicians believe that metaphysical modality is explainable by the essences of objects. In §II, I spell out the definitional view of essence, and in §III, a working notion of metaphysical explanation. Then, in §IV, I consider and reject five natural ways to explain necessity by essence: in terms of the principle that essential properties can't change, in terms of the supposed obviousness of the necessity of essential truth, in terms of the logical necessity of definitions, in terms of Fine's (...)
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  27. The Tenseless Theory of Time and the Moodless Theory of Modality.Bradford Skow - 2019 - Pacific Philosophical Quarterly 100 (2):506-524.
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  28. Scotism About Possible Natures.Thomas M. Ward - 2019 - Philosophical Quarterly 69 (275):393-408.
    I motivate and develop a view, found in John Duns Scotus, concerning God's explanatory role in the possibility of possible natures. A possible nature is a nature which can be instanced. The view is that possible natures have their possibility due to the coherence of their simple parts, but the simples which make up natures are themselves ex nihilo productions of divine intellect.
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  29. The Epistemic Idleness of Conceivability.M. Oreste Fiocco - 2018 - In Otávio Bueno & Scott A. Shalkowski (eds.), The Routledge Handbook of Modality. London and New York: Routledge. pp. 167-179.
    One’s involvement with the world seems limited merely to things as they are; hence, modal knowledge—knowledge of what could be or must be simpliciter—should be perplexing. Traditionally, the notion of conceivability has been regarded as crucial to an account of modal knowledge. I believe one has a good deal of such knowledge (though perhaps less than others presume one has). I maintain, however, that conceiving is utterly idle in acquiring modal knowledge: the conceivability of a proposition can provide no evidence (...)
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  30. Essential bundle theory and modality.Mark Jago - 2018 - Synthese (Suppl 6):1-16.
    Bundle theories identify material objects with bundles of properties. On the traditional approach, these are the properties possessed by that material object. That view faces a deep problem: it seems to say that all of an object’s properties are essential to it. Essential bundle theory attempts to overcome this objection, by taking the bundle as a specification of the object’s essential properties only. In this paper, I show that essential bundle theory faces a variant of the objection. To avoid the (...)
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  31. Модальности как фундаментальный элемент реальности: обзор книги «Williamson on Modality». [REVIEW]Lev Lamberov - 2018 - ФИЛОСОФИЯ НАУКИ 77:158-171.
    The paper provides a review of the collection of scientific works «Williamson on Modality» and contains a brief summary of the main ideas of the articles published in the book.
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  32. Leibniz’s Formal Theory of Contingency.Jeffrey McDonough & Zeynep Soysal - 2018 - History of Philosophy & Logical Analysis 21 (1):17-43.
    This essay argues that, with his much-maligned “infinite analysis” theory of contingency, Leibniz is onto something deep and important – a tangle of issues that wouldn’t be sorted out properly for centuries to come, and then only by some of the greatest minds of the twentieth century. The first two sections place Leibniz’s theory in its proper historical context and draw a distinction between Leibniz’s logical and meta-logical discoveries. The third section argues that Leibniz’s logical insights initially make his “infinite (...)
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  33. An object‐based truthmaker semantics for modals.Friederike Moltmann - 2018 - Philosophical Issues 28 (1):255-288.
    Possible worlds semantics faces a range of difficulties for at least certain types of modals, especially deontic modals with their distinction between heavy and light permissions and obligations. This paper outlines a new semantics of modals that aims to overcome some of those difficulties. The semantics is based on an a novel ontology of modal objects, entities like obligations, permissions, needs, as well as epistemic states, abilities, and essences. Moreover, it is based on truthmaking, in the sense of Fine’s recent (...)
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  34. The psychological representation of modality.Jonathan Phillips & Joshua Knobe - 2018 - Mind and Language 33 (1):65-94.
    A series of recent studies have explored the impact of people's judgments regarding physical law, morality, and probability. Surprisingly, such studies indicate that these three apparently unrelated types of judgments often have precisely the same impact. We argue that these findings provide evidence for a more general hypothesis about the kind of cognition people use to think about possibilities. Specifically, we suggest that this aspect of people's cognition is best understood using an idea developed within work in the formal semantics (...)
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  35. Existential Import and Relations of Categorical and Modal Categorical Statements.Jiri Raclavsky - 2018 - Logic and Logical Philosophy 27 (3): 271-300.
    I examine the familiar quadruple of categorical statements “Every F is/is not G.”, “Some F is/is not G.” as well as the quadruple of their modal versions “Necessarily, every F is/is not G.”, “Possibly, some F is/is not G.”. I focus on their existential import and its impact on the resulting Squares of Opposition. Though my construal of existential import follows modern approach, I add some extra details which are enabled by framing my definition of existential import within expressively rich (...)
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  36. A plenitude of powers.Barbara Vetter - 2018 - Synthese 198 (Suppl 6):1365-1385.
    Dispositionalism about modality is the view that metaphysical modality is a matter of the dispositions possessed by actual objects. In a recent paper, David Yates has raised an important worry about the formal adequacy of dispositionalism. This paper responds to Yates’s worry by developing a reply that Yates discusses briefly but dismisses as ad hoc: an appeal to a ’plenitude of powers’ including such powers as the necessarily always manifested power for 2+2\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} (...)
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  37. Potentiality.Jessica Leech - 2017 - Analysis 77 (2):457-467.
    Vetter's Potentiality is an exposition and development of a new account of possibility and necessity, given in terms of potentialities. In this critical notice, I give an outline of some of the key claims of the book. I then raise some issues for the extent to which Vetter's view can accommodate genuine de re modalities, especially those of possible existence and non-existence.
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  38. The Contingency Problem for Neo-Conventionalism.Jonathan Livingstone-Banks - 2017 - Erkenntnis 82 (3):653-671.
    Traditional conventionalism about modality claims that a proposition is necessarily true iff it is true by convention. In the wake of the widespread repudiation of truth-byconvention, traditional conventionalism has fallen out of favour. However, a family of theories of modality have arisen that, whilst abandoning truth-by-convention, retain the spirit of traditional conventionalism. These ‘neo-conventionalist’ theories surpass their forebears and don’t fall victim to the criticisms inherited through truth-by-convention. However, not all criticisms levelled at traditional conventionalism target truth-by-convention. Any conventional theory (...)
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  39. Two Standard and Two Modal Squares of Opposition.Jiri Raclavsky - 2017 - In The Square of Opposition: A Cornerstone of Thought. 93413 Cham, Německo: pp. 119-142.
    In this study, we examine modern reading of the Square of Opposition by means of Tichý's Transparent intensional logic. Explicit use of possible world semantics helps us to sharply discriminate between standard and modal readings of categorial statements. We thus get two basic versions of the Square, whereas the Modal Square has not been fully introduced in the contemporary debate yet. Some properties ascribed by mediaeval logicians to the Square require a shift from its Standard to Modal version. Not inevitably, (...)
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  40. Ideology in a Desert Landscape.Alessandro Torza - 2017 - Philosophical Issues 27 (1):383-406.
    On one influential view, metaphysical fundamentality can be understood in terms of joint‐carving. Ted Sider has recently argued that (i) some first order quantifier is joint‐carving, and (ii) modal notions are not joint‐carving. After vindicating the theoretical indispensability of quantification against recent criticism, I will defend a logical result due to Arnold Koslow which implies that (i) and (ii) are incompatible. I will therefore consider an alternative understanding of Sider's metaphysics to the effect that (i) some first order quantifier is (...)
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  41. A Note on Morato on Modality and Explanation.Nathan Wildman - 2017 - Erkenntnis 82 (5):967-974.
    This brief note critically assesses the central arguments in Morato’s recent contribution to the growing literature on Blackburn’s dilemma about necessity. In particular, I demonstrate that neither of Morato’s two novel reconstructions of the dilemma’s contingency horn succeed, since both turn on false premises; and, Morato fails to adequately motivate his own response to these reconstructions. The upshot is that Morato has set himself a pair of flawed problems, then offered a flawed solution.
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  42. On the Error of Treating Functions as Objects.Karen Green - 2016 - Analysis and Metaphysics 15:20–35.
    In his late fragment, ‘Sources of Knowledge of Mathematics and Natural Sciences’ Frege laments the tendency to confuse functions with objects and says, ‘It is here that the tendency of language by its use of the definite article to stamp as an object what is a function and hence a non-object, proves itself to be the source of inaccurate and misleading expressions and also of errors of thought. Probably most of the impurities that contaminate the logical source of knowledge have (...)
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  43. Leibniz on the Modal Status of Absolute Space and Time.Martin Lin - 2016 - Noûs 50 (3):447-464.
  44. Mahdollisuus.Ilkka Niiniluoto, Tuomas Tahko & Teemu Toppinen (eds.) - 2016 - Helsinki: Philosophical Society of Finland.
    Proceedings of the 2016 "one word" colloquium of the The Philosophical Society of Finland. The word was "Possibility".
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  45. On Williamson and simplicity in modal logic.Theodore Sider - 2016 - Canadian Journal of Philosophy 46 (4-5):683-698.
    According to Timothy Williamson, we should accept the simplest and most powerful second-order modal logic, and as a result accept an ontology of "bare possibilia". This general method for extracting ontology from logic is salutary, but its application in this case depends on a questionable assumption: that modality is a fundamental feature of the world.
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  46. Could There Have Been Nothing? Against Metaphysical Nihilism, by Geraldine Coggins. [REVIEW]Joshua Spencer - 2016 - Mind 125 (500):1255-1259.
    Could There Have Been Nothing? Against Metaphysical Nihilism, by CogginsGeraldine. Basingstoke : Palgrave Macmillan, 2010. Pp. xii + 171.
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  47. Modal Semantics without Worlds.Craig Warmke - 2016 - Philosophy Compass 11 (11):702-715.
    Over the last half century, possible worlds have bled into almost every area of philosophy. In the metaphysics of modality, for example, philosophers have used possible worlds almost exclusively to illuminate discourse about metaphysical necessity and possibility. But recently, some have grown dissatisfied with possible worlds. Why are horses necessarily mammals? Because the property of being a horse bears a special relationship to the property of being a mammal, they say. Not because every horse is a mammal in every possible (...)
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  48. Williamson on Modality.Juhani Yli-Vakkuri & Mark McCullagh - 2016 - Canadian Journal of Philosophy 46 (4-5):453-851.
    This special issue of the Canadian Journal of Philosophy is dedicated to Timothy Williamson's work on modality. It consists of a new paper by Williamson followed by papers on Williamson's work on modality, with each followed by a reply by Williamson. -/- Contributors: Andrew Bacon, Kit Fine, Peter Fritz, Jeremy Goodman, John Hawthorne, Øystein Linnebo, Ted Sider, Robert Stalnaker, Meghan Sullivan, Gabriel Uzquiano, Barbara Vetter, Timothy Williamson, Juhani Yli-Vakkuri.
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  49. Proof-Theoretic Semantics, a Problem with Negation and Prospects for Modality.Nils Kürbis - 2015 - Journal of Philosophical Logic 44 (6):713-727.
    This paper discusses proof-theoretic semantics, the project of specifying the meanings of the logical constants in terms of rules of inference governing them. I concentrate on Michael Dummett’s and Dag Prawitz’ philosophical motivations and give precise characterisations of the crucial notions of harmony and stability, placed in the context of proving normalisation results in systems of natural deduction. I point out a problem for defining the meaning of negation in this framework and prospects for an account of the meanings of (...)
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  50. Review of Brian Leftow, God and Necessity: Oxford University Press: Oxford 2012, ISBN 978-0-19-926335-6, hb, x + 575 pp. [REVIEW]Bruce Langtry - 2015 - Sophia 54 (2):227-229.
    The review is a summary of the main thrust of Leftow's rich and very interesting theistic account of alethic possibility and necessity.
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