Hud Hudson

Three Dimensionalists and Four Dimensionalists are engaged in a debate on the topics of persistence and mereology. In this paper, I explore implications of Four Dimensionalism for the formulation of the criterion of personhood and on the question of which individuals satisfy that criterion. In my discussion I argue that the Four Dimensionalist has reason to identify a human person with a proper part of a human organism, and that the Four Dimensionalist has reason to believe that if there is something morally wrong with human abortion or infanticide, it cannot be grounded in claims about the moral status of persons

In a very influential paper, Abortion, Joel Feinberg offers a series of arguments against four popular proposals for the criterion of moral personhood and defends a fifth proposal. In this paper, I demonstrate that two widely‐accepted arguments employed by Feinberg against the modified species criterion and the strict potentiality criterion, respectively, are unsound. Moreover, I argue that there is a general feature of his inquiry into the criteria for moral personhood which undermines his efforts to argue convincingly either in favour of his own candidate or against other candidates.

Despite its first page this paper is not yet another piece on Kant! Rather, the paper is a contribution to the literature on incongruent counterparts. Specifically, it concerns the question of whether we can construct a temporal version of the puzzle of incongruent counterparts---a question which (as far as I can tell) has been thoroughly neglected. I maintain that we can construct such a version of the puzzle, and that this temporal variant on the phenomenon has something to teach us about popular arguments for the possibility (or even actuality) of four-dimensional space.

I begin this study with a review of the 18th-century figures, Leibniz, Wolff, Crusius, Hume and the pre-critical Kant concerning causation, free will and compatibilism. This review provides the background for an investigation into and a reconstruction of Kant's thesis of the compatibility of causal determinism and human freedom. I formulate Kant's argument for causal determinism and present his defense of that argument, devoting an extended discussion to the recent literature regarding its key premise, the Law of Universal Causation. Then I identify and analyze two senses of 'will', the legislative function of practical reason and the executive function of the power of choice, and four senses of 'freedom of the will', spontaneity, independence, autonomy and heteronomy. ;On the strength of these discussions, I attribute to Kant the views that causal determinism obtains and that human beings have free will. After considering and finding unsatisfactory the traditional readings of Kant's resolution of the apparent incompatibility of these two theses, I explicate Kant's often misunderstood distinction between things in themselves and appearances. On the basis of the features of this distinction together with my exposition of Kant's theory of freedom, I ascribe to Kant a token-token identity thesis regarding human actions and natural events, but a type-type irreducibility thesis regarding the sorts of descriptions applicable to human actions and natural events. The consequent compatibilist resolution, in addition to furnishing a way of reading problematic passages underlying standard incompatibilistic interpretations, yields a compatibilism which neither sacrifices the epistemology of the Critique of Pure Reason, nor leaves Kant with only an impoverished theory of human free will. ;Finally, I bring the results of this inquiry into the current debate over the problem of freedom and determinism. Specifically, for the purpose of providing Kantian critiques of current positions and current critiques of the Kantian position, I place Kant's view of token-token identity and type-type irreducibility within the context of contemporary philosophy of mind, aligning him with philosophers who share not only his compatibilism, but also, to a surprising degree, the particulars of his version of compatibilism.

Anyone who endorses Universalism and Four Dimensionalism owes us an argument for those controversial mereological theses. One may put forth David Lewis’s and Ted Sider’s arguments from vagueness. However, the success of those arguments depends on the rejection of the epistemic view of vagueness, and thus opens the door to a fatal confrontation with one particularly troubling version of The Problem of the Many. The alternative for friends of Universalism and Four Dimensionalism is to abandon those currently fashionable arguments in favor of others which are consistent with the epistemic view of vagueness and with the elegant solution it furnishes to that problem.