•  1425
    Chance and Context
    In Alastair Wilson (ed.), Chance and Temporal Asymmetry, Oxford University Press. 2014.
    The most familiar philosophical conception of objective chance renders determinism incompatible with non-trivial chances. This conception – associated in particular with the work of David Lewis – is not a good fit with our use of the word ‘chance’ and its cognates in ordinary discourse. In this paper we show how a generalized framework for chance can reconcile determinism with non-trivial chances, and provide for a more charitable interpretation of ordinary chance-talk. According to our proposal…Read more
  •  1265
    Nozick, prohibition, and no-fault motor insurance
    Journal of Applied Philosophy 20 (2). 2003.
    Is a Nozickian theory of rights compatible with a no-fault motor insurance scheme? I say, Yes. The argument turns on an explication of the basis on which a Nozickian justifies the prohibition of merely risky activities.
  •  453
    Dispositional essentialism and the possibility of a law-abiding miracle
    Philosophical Quarterly 51 (205): 484-494. 2001.
    An objection to dispositional essentialism has been that it yields an implausible semantics for counterfactuals if determinism happens to be true. I claim that an adequate remedy to this objection would be to endorse the metaphysical possibility of ‘law‐abiding miracles’, i.e., uncaused spontaneous events. This proposal entails that determinism de jure is meta‐physically impossible; I argue that this is not a serious disadvantage. I discuss consequences of the proposal for the logical form of la…Read more
  •  458
    Armstrong and the modal inversion of dispositions
    Philosophical Quarterly 55 (220). 2005.
    D. M. Armstrong has objected that the Dispositionalist theory of laws and properties is modally inverted, for it entails that properties are constituted by relations to non-actual possibilia. I contend that, if this objection succeeds against Dispositionalism, then Armstrong's nomic necessitation relation is also modally inverted. This shows that at least one of Armstrong's reasons for preferring a nomic necessitation theory is specious.
  •  163
    Humanitarian Intervention and the Modern State System
    The Oxford Handbook of Ethics and War. 2015.
    This chapter argues that, because humanitarian intervention typically involves the military of one state attempting to overthrow another state ’s government, it gives rise to different moral questions from simple cases of interpersonal defensive violence. State sovereignty not only protects institutions within a society that contribute to the satisfaction of individuals’ interests and that cannot be easily restored once overthrown; it also plays a role in the constitution of those interests, whi…Read more
  •  1895
    Unfinkable dispositions
    Synthese 160 (2). 2008.
    This paper develops two ideas with respect to dispositional properties: (1) Adapting a suggestion of Sungho Choi, it appears the conceptual distinction between dispositional and categorical properties can be drawn in terms of susceptibility to finks and antidotes. Dispositional, but not categorical properties, are not susceptible to intrinsic finks, nor are they remediable by intrinsic antidotes. (2) If correct, this suggests the possibility that some dispositions—those which lack any causal bas…Read more
  •  1537
    Humean dispositionalism
    Australasian Journal of Philosophy 86 (1): 113-126. 2008.
    Humean metaphysics is characterized by a rejection of necessary connections between distinct existences. Dispositionalists claim that there are basic causal powers. The existence of such properties is widely held to be incompatible with the Humean rejection of necessary connections. In this paper I present a novel theory of causal powers that vindicates the dispositionalist claim that causal powers are basic, without embracing brute necessary connections. The key assumptions of the theory are th…Read more
  •  1365
    Counterlegals and Necessary Laws
    Philosophical Quarterly 54 (216). 2004.
    Necessitarian accounts of the laws of nature meet an apparent difficulty: for them, counterlegal conditionals, despite appearing to be substantive, seem to come out as vacuous. I argue that the necessitarian may use the presuppositions of counterlegal discourse to explain this. If the typical presupposition that necessitarianism is false is made explicit in counterlegal utterances, we obtain sentences such as 'If it turns out that the laws of nature are contingent, then if the laws had been othe…Read more
  •  1384
    Climate Change, Cooperation, and Moral Bioenhancement
    Journal of Medical Ethics 42 (2): 742-747. 2016.
    The human faculty of moral judgment is not well suited to address problems, like climate change, that are global in scope and remote in time. Advocates of ‘moral bioenhancement’ have proposed that we should investigate the use of medical technologies to make human beings more trusting and altruistic, and hence more willing to cooperate in efforts to mitigate the impacts of climate change. We survey recent accounts of the proximate and ultimate causes of human cooperation in order to assess the p…Read more
  •  349
    Order and Affray: Defensive Privileges in Warfare
    Philosophy and Public Affairs 37 (4). 2009.
    Just war theory is a difficult, even paradoxical, philosophical topic. It is not just that warfare involves large-scale, organised, deliberate killing, and hence might seem the very paradigm of immorality. The just war tradition sharply divorces the question of whether or not it is permissible to resort to war – the question of jus ad bellum – from the question of how and against whom one may inflict harm once at war – the question of jus in bello. As Michael Walzer notes,1 this separation of ju…Read more
  •  1632
    This paper examines the idea that there might be natural kinds of causal processes, with characteristic diachronic structure, in much the same way that various chemical elements form natural kinds, with characteristic synchronic structure. This claim -- if compatible with empirical science -- has the potential to shed light on a metaphysics of essentially dispositional properties, championed by writers such as Bird and Ellis.
  •  63
    Active dispositions
    Dissertation, Monash University. 2003.
    This thesis examines the relationship between dispositional properties (such as solubility and fragility) and causation. It is argued that dispositions are best explained in terms of causal processes. The resulting explanation avoids violating Humean strictures that prohibit necessary connections between distinct existences. It also gives rise to a novel account of the distinction between dispositional and categorical properties.
  •  1425
    Understanding the political defensive privilege
    In Cécile Fabre & Seth Lazar (eds.), The Morality of Defensive War, Oxford University Press. pp. 40-65. 2014.
    Nations are understood to have a right to go to war, not only in defense of individual rights, but in defense of their own political standing in a given territory. This paper argues that the political defensive privilege cannot be satisfactorily explained, either on liberal cosmopolitan grounds or on pluralistic grounds. In particular, it is argued that pluralistic accounts require giving implausibly strong weight to the value of political communities, overwhelming the standing of individuals. L…Read more
  •  1744
    Using Peer Instruction to Teach Philosophy, Logic, and Critical Thinking
    with Sam Butchart and Greg Restall
    Teaching Philosophy 32 (1): 1-40. 2009.
    Peer Instruction is a simple and effective technique you can use to make lectures more interactive, more engaging, and more effective learning experiences. Although well known in science and mathematics, the technique appears to be little known in the humanities. In this paper, we explain how Peer Instruction can be applied in philosophy lectures. We report the results from our own experience of using Peer Instruction in undergraduate courses in philosophy, formal logic, and critical thinking. W…Read more
  •  1448
    Lange on essentialism, counterfactuals, and explanation
    Australasian Journal of Philosophy 83 (1). 2005.
    Marc Lange objects to scientific essentialists that they can give no better account of the counterfactual invariance of laws than Humeans. While conceding this point succeeds ad hominem against some essentialists, I show that it does not undermine essentialism in general. Moreover, Lange's alternative account of the relation between laws and counterfactuals is - with minor modification - compatible with essentialism.
  •  1296
    Is the risk–liability theory compatible with negligence law?
    with Trevor Pisciotta
    Legal Theory 11 (4): 387-404. 2005.
    David McCarthy has recently suggested that our compensation and liability practices may be interpreted as reflecting a fundamental norm to hold people liable for imposing risk of harm on others. Independently, closely related ideas have been criticised by Stephen R. Perry and Arthur Ripstein as incompatible with central features of negligence law. We aim to show that these objections are unsuccessful against McCarthy’s Risk–liability theory, and that such an approach is a promising means both fo…Read more
  •  219
    Genealogical Explanations of Chance and Morals
    In Uri D. Leibowitz & Neil Sinclair (eds.), Explanation in Ethics and Mathematics: Debunking and Dispensability, Oxford University Press Uk. 2016.
    Objective chance and morality are rarely discussed together. In this paper, I argue that there is a surprising similarity in the epistemic standing of our beliefs about both objective chance and objective morality. The key similarity is that both of these sorts of belief are undermined -- in a limited, but important way -- by plausible genealogical accounts of the concepts that feature in these beliefs. The paper presents a brief account of Richard Joyce's evolutionary hypothesis of the genealog…Read more