•  297
    Liberalism and mental mediation
    Journal of Value Inquiry 38 (2): 186-202. 2004.
    Liberals agree that free speech should be protected, where speech is understood broadly to include all forms of intentional communication, including actions and pictures, not merely the spoken or written word. A surprising view about free speech in some liberal and legal circles is that communications should be protected on free-speech grounds only if the communications are mentally mediated. By “mentally mediated communication” we mean speech which communicates its message in such a way that th…Read more
  • Modality, Morality and Belief: Essays in Honour of Ruth Barcan Marcus (review)
    Philosophical Quarterly 48 (191): 253-255. 1998.
  •  184
    Reflexive fictionalisms
    Analysis 56 (1): 23-32. 1996.
    There is a class of fictionalist strategies (the reflexive fictionalisms) which appear to suffer from a common problem: the problem that the entities which are supposedly fictional turn out, by the lights of the fictionalist theory itself, to exist. The appropriate solution is to reject so-called strong fictionalism in each case: that is, to reject the variety of fictionalism which takes appeal to the domain of fictional entities to provide an explanation or analysis of the operators or predi…Read more
  •  2704
    Possible Worlds Semantics
    In Gillian Russell & Delia Fara (eds.), The Routledge Companion to Philosophy of Language, Routledge Press. pp. 242-252. 2012.
    This chapter provides an introduction to possible worlds semantics in both logic and the philosophy of language, including a discussion of some of the advantages and challenges for possible worlds semantics.
  •  281
    Recombination unbound
    Philosophical Studies 84 (2-3): 239-262. 1996.
    This paper discusses the principle of recombination for possible worlds. It argues that arguments against unrestricted recombination offered by Forrest and Armstrong and by David Lewis fail, but a related argument is a challenge, and recommends that we accept an unrestricted principle of recombination and the conclusion that possible worlds form a proper class
  •  171
    Canberra Plan
    A Companion to Philosophy in Australia and New Zealand. 2010.
    This encylopedia entry describes the "Canberra Plan" approach to conceptual analysis, a method closely related to the Ramsey-Carnap-Lewis approach to analysing the meaning of theoretical terms.
  •  798
    Lewis's Philosophical Method
    In B. Loewer & J. Schaffer (eds.), A Companion to Lewis, Wiley-blackwell. pp. 25-39. 2015.
    Lewis is famous as a contemporary philosophical system-builder. The most obvious way his philosophy exhibited a system was in its content: Lewis’s metaphysics, for example, provided answers to many metaphysical puzzles in an integrated way, and there are illuminating connections to be drawn between his general metaphysical views and, for example, his various views about the mind and its place in nature
  •  261
    Impossible Worlds
    Philosophy Compass 8 (4): 360-372. 2013.
    Philosophers have found postulating possible worlds to be very useful in a number of areas, including philosophy of language and mind, logic, and metaphysics. Impossible worlds are a natural extension to this use of possible worlds, and can help resolve a number of difficulties thrown up by possible‐worlds frameworks.
  •  829
    Methodological Naturalism in Metaethics
    In Tristram Colin McPherson & David Plunkett (eds.), The Routledge Handbook of Metaethics, Routledge. pp. 659-673. 2017.
    Methodological naturalism arises as a topic in metaethics in two ways. One is the issue of whether we should be methodological naturalists when doing our moral theorising, and another is whether we should take a naturalistic approach to metaethics itself. Interestingly, these can come apart, and some naturalist programs in metaethics justify a non-scientific approach to our moral theorising. This paper discusses the range of approaches that fall under the general umbrella of methodological natur…Read more
  •  359
    Selfless Desires
    Philosophy and Phenomenological Research 73 (3): 665-679. 2007.
    Unified theories of de se attitudes and de dicto attitudes, along the lines of David Lewis’s proposal, face a problem. Whether or not they are adequate for representing beliefs, they can misrepresent the content of many of our desires, which rank possible outcomes in which the agent with the desire does not exist. These desires are shown to play a role in the rational explanation of action, and recognising them is important in our understanding of ourselves. Lewis’s account of attitudes de di…Read more
  •  138
  •  486
    Consequentialism and Side Constraints
    Journal of Moral Philosophy 6 (1): 5-22. 2009.
    Many people are inclined to think that consequences of actions, or perhaps reasonably expected consequences of those actions, have moral weight. Firing off shotguns in crowded areas is typically wrong, at least in part, because of the people who get maimed and killed. Committed consequentialists think that consequences (either actual consequences, or expected consequences, or intended consequences, or reasonably expected consequences, or maybe some other different shade) are all that matters, mo…Read more
  •  91
    Reality and Humean Supervenience: Essays on the Philosophy of David Lewis (review)
    Philosophical Review 112 (2): 263-266. 2003.
    David Lewis’s work in the past few decades produced a powerful and thought-provoking system, and this collection of eleven essays represents state-of-the-art engagement with that system across a range of topics. The title would suggest that the papers would deal in particular with Lewis’s doctrine of Humean supervenience, the doctrine that all the contingent truths are ultimately determined by instantiations of fundamental categorical properties at points of space-time, and the spatiotemporal re…Read more
  •  615
    As is well known, Aristotelian natural philosophy, and many other systems of natural philosophy since, have relied heavily on teleology and teleological causation. Somehow, the purpose or end of an obj ect can be used to predict and explain what that object does: once you know that the end of an acorn is to become an oak, and a few things about what sorts of circumstances are conducive to the attainment of this end, you can predict a lot about the sprouting of the acorn and the subsequent behavi…Read more
  •  330
    Method in Analytic Metaphysics
    In Herman Cappelen, Tamar Gendler & John P. Hawthorne (eds.), The Oxford Handbook of Philosophical Methodology, Oxford University Press. 2016.
    This article focuses on the main methods used in analytic metaphysics. It first considers five important sources of constraints on metaphysical theorizing: linguistic and conceptual analysis, consulting intuitions, employing the findings of science, respecting folk opinion, and applying theoretical virtues in metaphysical theory choice such as preferring simpler theories, or preferring more explanatory theories. It then examines the role of formal methods in metaphysics as well as the role of me…Read more
  •  1194
    The Possibilities of History
    Journal of the Philosophy of History 10 (3): 441-456. 2016.
    _ Source: _Volume 10, Issue 3, pp 441 - 456 Several kinds of historical alternatives are distinguished. Different kinds of historical alternatives are valuable to the practice of history for different reasons. Important uses for historical alternatives include representing different sides of historical disputes; distributing chances of different outcomes over alternatives; and offering explanations of why various alternatives did _not_ in fact happen. Consideration of counterfactuals about what …Read more
  •  806
    Conditionals and Curry
    Philosophical Studies 173 (10): 2629-2647. 2016.
    Curry's paradox for "if.. then.." concerns the paradoxical features of sentences of the form "If this very sentence is true, then 2+2=5". Standard inference principles lead us to the conclusion that such conditionals have true consequents: so, for example, 2+2=5 after all. There has been a lot of technical work done on formal options for blocking Curry paradoxes while only compromising a little on the various central principles of logic and meaning that are under threat. Once we have a sense o…Read more
  •  403
    This paper builds on the system of David Lewis’s “Parts of Classes” to provide a foundation for mathematics that arguably requires not only no distinctively mathematical ideological commitments (in the sense of Quine), but also no distinctively mathematical ontological commitments. Provided only that there are enough individual atoms, the devices of plural quantification and mereology can be employed to simulate quantification over classes, while at the same time allowing all of the atoms (and m…Read more
  •  403
    In Jenkins’s groundbreaking analysis of flirtation (Jenkins 2006), she suggests that an act is an act of flirtation if, and only if, the following two conditions are satisfied: “First, the flirter should act with the intention to raise flirter/flirtee romance and/or sex to salience, in a knowing yet playful way. Second, he or she should believe that the flirtee can respond is in some significant way”. Jenkins also draws the useful distinction between flirtation proper and “flirtatious behaviour”…Read more
  •  526
    Classes, Worlds and Hypergunk
    The Monist 87 (3): 303-321. 2004.
    The question of what truths are necessary in the broadest possible sense is a difficult one to answer, as is the question of what the limits are to what is possible. (Most people would see these two questions as different sides of the same coin, of course, since many think the question of what is possible is just the question of what is not necessarily ruled out). We have three general sorts of strategies for determining whether something is necessary (or possible). We can identify it in a class…Read more
  •  145
    The Dangers of Pragmatic Virtue
    Inquiry: An Interdisciplinary Journal of Philosophy 57 (5-6): 623-644. 2014.
    Many people want to hold that some theoretical virtues—simplicity, elegance, familiarity or others—are only pragmatic virtues. That is, these features do not give us any more reason to think a theory is true, or close to true, but they justify choosing one theoretical option over another because they are desirable for some other, practical purpose. Using pragmatic virtues in theory choice apparently brings with it a dilemma: if we are deciding what to accept on the basis of considerations that a…Read more
  •  508
    A consistent reading of Sylvan's box
    Philosophical Quarterly 57 (229): 667-673. 2007.
    I argue that Graham Priest's story 'Sylvan's Box' has an attractive consistent reading. Priest's hope that this story can be used as an example of a non-trivial 'essentially inconsistent' story is thus threatened. I then make some observations about the role 'Sylvan's Box' might play in a theory of unreliable narrators.
  •  904
    Platitudes and metaphysics
    In David Braddon-Mitchell & Robert Nola (eds.), Conceptual Analysis and Philosophical Naturalism, Mit Press. 2009.
    One increasingly popular technique in philosophy might be called the "platitudes analysis": a set of widely accepted claims about a given subject matter are collected, adjustments are made to the body of claims, and this is taken to specify a “role” for the phenomenon in question. (Perhaps the best-known example is analytic functionalism about mental states, where platitudes about belief, desire, intention etc. are together taken to give us a "role" for states to fill if they are to count as men…Read more
  •  551
    Impossible Worlds: A Modest Approach
    Notre Dame Journal of Formal Logic 38 (4): 535-572. 1997.
    Reasoning about situations we take to be impossible is useful for a variety of theoretical purposes. Furthermore, using a device of impossible worlds when reasoning about the impossible is useful in the same sorts of ways that the device of possible worlds is useful when reasoning about the possible. This paper discusses some of the uses of impossible worlds and argues that commitment to them can and should be had without great metaphysical or logical cost. The paper then provides an account of …Read more
  •  317
    Modality
    In John Shand (ed.), Central Issues of Philosophy, Wiley-blackwell. pp. 95--106. 2009.
    This is an introduction to the topic of modality in philosophy. Theories of modality seek to explain possibility and necessity in the various ways they come up in our ordinary understanding of the world and in our systematic theorising. Topics covered include distinguishing types of necessity and possibility; possible worlds and their use; de re possibility and necessity; and how we discover modal truths.
  •  40
    Non-Factivity About Knowledge: A Defensive Move
    The Reasoner 2 (11): 6-7. 2008.
    Those defending non-factivity of knowledge should explain why it is so intuitive that knowledge entails truth. One option they have is to concede a great deal to this intuition: they can maintain that we know that knowledge is factive, even though it is not.
  •  2002
    Utility Monsters for the Fission Age
    with Ray Briggs
    Pacific Philosophical Quarterly 96 (2): 392-407. 2015.
    One of the standard approaches to the metaphysics of personal identity has some counter-intuitive ethical consequences when combined with maximising consequentialism and a plausible doctrine about aggregation of consequences. This metaphysical doctrine is the so-called ‘multiple occupancy’ approach to puzzles about fission and fusion. It gives rise to a new version of the ‘utility monster’ problem, particularly difficult problems about infinite utility, and a new version of a Parfit-style ‘repug…Read more
  •  495
    Fearing Spouses in Aristotle's Ta Oikonomika
    British Journal for the History of Philosophy 18 (1): 1-8. 2010.
    The work which the Loeb Classical Library classifies as book 3 of the Oikonomika attributed to Aristotle is a curious piece. It has come down to us only via medieval translations into Latin. (I will be quoting the Loeb text and translation except where noted.) It is not certain that it is by Aristotle: and it is not certain whether it is even a part of the work attributed to Aristotle in ancient times. For want of a better name, let me refer to its author, whoever that was, as “Aristotle”, and l…Read more
  •  139
    This book discusses a range of important issues in current philosophical work on the nature of possible worlds. Areas investigated include the theories of the nature of possible worlds, general questions about metaphysical analysis and questions about the direction of dependence between what is necessary or possible and what could be.