A counterpossible conditional is a counterfactual with an impossible antecedent. Common sense delivers the view that some such conditionals are true, and some are false. In recent publications, Timothy Williamson has defended the view that all are true. In this paper we defend the common sense view against Williamson’s objections.

Published in the American Journal of Bioethics.

We reply to various arguments by Otavio Bueno and Edward Zalta (‘Object Theory and Modal Meinongianism’) against Modal Meinongianism, including that it presupposes, but cannot maintain, a unique denotation for names of fictional characters, and that it is not generalizable to higher-order objects. We individuate the crucial difference between Modal Meinongianism and Object Theory in the former’s resorting to an apparatus of worlds, possible and impossible, for the representational purposes for which the latter resorts to a distinction between two kinds (...) of predication, exemplification and encoding. We show that encoding has fewer forerunners in the history of philosophy than Bueno and Zalta want, and that there’s a reason why the notion has been found baffling by some. (shrink)

In this paper we reply to arguments of Kroon (“Characterization and Existence in Modal Meinongianism”. Grazer Philosophische Studien 86, 23–34) to the effect that Modal Meinongianism cannot do justice to Meinongian claims such as that the golden mountain is golden, and that it does not exist.

In this article, we discuss the notion of merely confused supposition as it arose in the medieval theory of suppositio personalis. The context of our analysis is our formalization of William of Ockham's theory of supposition sketched in Mind 86 (1977), 109-13. The present paper is, however, self-contained, although we assume a basic acquaintance with supposition theory. The detailed aims of the paper are: to look at the tasks that supposition theory took on itself and to use our formalization to (...) relate them to more modern ideas; to explain the notion of merely confused supposition and to defend it against certain criticisms; and to discuss two issues closely related to the idea of merely confused supposition which we could not broach in a shorter article: the mode of supposition of terms in intensional contexts, and the possible existence of a fourth mode, often called suppositio copulatim. (shrink)

Draft of forthcoming article in the Journal of Medical Ethics where I discuss ethical tension between LGBT testimony and testimonial trust of medical professionals.

In this chapter I argue that Alexis de Tocqueville describes the virtue of citizenship in a way that is relevant to contemporary virtue ethics. He explains how a group can possess a virtue that is distinct from the virtue of individual members of the group. (this is an unofficial draft).

In this paper, I aim to demonstrate that the consequences of the current United States health insurance scheme on both physician and patient autonomy is dire. So dire, in fact, that the only moral solution is something other than what we have now. The United States healthcare system faces much criticism at present. But my focus is particular: I am interested in the ways in which insurance interferes with physician and patient autonomy. I will argue in favor of an expansion (...) of the traditional conception of what I call “medical autonomy” or “healthcare autonomy” and the usual role it plays in bioethical discussions. More generally, I show that in morally designing or evaluating any healthcare system, serious attention should be paid to how this system helps foster what I call active autonomy. (shrink)

Berry, Daniels, and Ladin make a strong argument for discontinuing the use of, “lack of social support,” as an organ transplantation listing criterion. This argument, however, actually leads to conclusions much stronger than those that the authors’ propose: The argument works equally well against using, (1) any “psychosocial” factors at all as a listing criterion, and, (2) any criteria other than factors that directly relate to empirically established medical need, and/or empirically established survival rate. Moreover, while the authors rightly point (...) to a lack of empirical evidence connecting social support to survivability, they neglect mentioning that the empirical literature on social support provides grounds to favor listing persons who seem to, sadly, lack a social support system. (shrink)

Nearly a decade has past since Grove gave a semantics for the AGM postulates. The semantics, called sphere semantics, provided a new perspective of the area of study, and has been widely used in the context of theory or belief change. However, the soundness proof that Grove gives in his paper contains an error. In this note, we will point this out and give two ways of repairing it.