Peter Vallentyne

This is the second volume of Oxford Studies in Political Philosophy. Since its revival in the 1970s political philosophy has been a vibrant field in philosophy, one that intersects with jurisprudence, normative economics, political theory in political science departments, and just war theory. OSPP aims to publish some of the best contemporary work in political philosophy and these closely related subfields. The papers in this volume address a range of central topics and represent cutting edge work in the field. They are grouped into three main themes: ideal theory, the moral assessment of states, and issues in social reliations.

Where there are infinitely many possible [equiprobable] basic states of the world, a standard probability function must assign zero probability to each state—since any finite probability would sum to over one. This generates problems for any decision theory that appeals to expected utility or related notions. For it leads to the view that a situation in which one wins a million dollars if any of a thousand of the equally probable states is realized has an expected value of zero (since each such state has probability zero). But such a situation dominates the situation in which one wins nothing no matter what (which also has an expected value of zero), and so surely is more desirable. I formulate and defend some principles for evaluating options where standard probability functions cannot strictly represent probability—and in particular for where there is an infinitely spread, uniform distribution of probability. The principles appeal to standard probability functions, but overcome at least some of their limitations in such cases.

In the old days, material egalitarians tended to favor equality of outcome advantage, on some suitable conception of advantage. Under the influence of Dworkin’s seminal articles on equality, contemporary material egalitarians have tended to favor equality of brute luck advantage---on the grounds that this permits people to be held appropriately accountable for the benefits and burdens of their choices. I shall argue, however, that a plausible conception of egalitarian justice requires neither that brute luck advantage always be equalized nor that people always bear the full cost of their voluntary choices. Instead, justice requires that initial opportunities for advantage be equalized---roughly along the lines suggested by Arneson and Cohen. Brute luck egalitarianism and initial opportunity egalitarianism are fairly similar in motivation, and as a result they have not been adequately distinguished. Once the two views are more clearly contrasted, equality of opportunity for advantage will, I claim, be seen to be a more plausible conception of equality.

In Are Equal Liberty and Equality Compatible?, Jan Narveson and James Sterba insightfully debate whether a right to maximum equal negative liberty requires, or at least is compatible with, a right to welfare. Narveson argues that the two rights are incompatible, whereas Sterba argues that the rights are compatible and indeed that the right to maximum equal negative liberty requires a right to welfare. I argue that Sterba is correct that the two rights are conceptually compatible and that Narveson is right that right to negative liberty does not conceptually require a right to welfare

I address an issue that arises for rights theories that recognize rights to compensation for rightsintrusions. Do individuals who never pose any risk of harm to others have a right, against a rightsintruder, to full compensation for any resulting intrusion-harm, or is the right limited in some way by the extent to which the intruder was agent-responsible for the intrusion-harm (e.g., the extent to which the harm was a foreseeable result of her autonomous choices)? Although this general issue of strict liability vs. fault liability has been much analyzed and debated, there is a promising position that, to the best of my knowledge, has not been much discussed. This is the view that (1) when the intruder is agent-responsible for violating the rights (e.g., does so knowingly), she owes the intrudee compensation for the entire intrusion-harm, but (2) when the intruder is not agentresponsible for wrongly intruding upon the rights (because the intrusion was not wrong or because the intruder could not reasonably have known it was wrong), then she owes the intrudee compensation only for the intrusion-harm for which she is agent-responsible (and not, for example, harm that she could not have reasonably foreseen). I shall develop and motivate this position without attempting a full defense. Throughout, I focus on the rights of the intrudee, against the intruder, to compensation and the correlative duty of the intruder to the intrudee. I’m pleased and honored to have this paper included in this collection in honor of Hillel Steiner. Much of what I know about rights and libertarianism I learned from him – both from his written works and from his very helpful correspondence over the years. Moreover, his intellectual rigor, honesty, and modesty have been a source of inspiration. Although Hillel has not written extensively on compensation for intrusion-harms, it is a topic central to his view of justice, as it is to mine.

Where there is a fixed population (i.e., who exists does not depend on what choice an agent makes), the deontic version of anonymous Paretian egalitarianism holds that an option is just if and only if (1) it is anonymously Pareto optimal (i.e., no feasible alternative has a permutation that is Pareto superior), and (2) it is no less equal than any other anonymously Pareto optimal option. We shall develop and discuss a version of this approach for the variable population case (i.e., where who exists does depend on what choice an agent makes). More specifically, we shall develop and discuss it in the context of a person-affecting framework—in which an option is just if and only if it wrongs no one according to certain plausible conditions on wronging.

Libertarianism holds that agents initially fully own themselves. Lockean libertarianism further holds that agents have the moral power to acquire private property in external things as long as a Lockean Proviso—requiring that “enough and as good” be left for others—is satisfied. Radical right-libertarianism, on the other hand, holds that satisfaction of a Lockean Proviso is not necessary for the appropriation of unowned things. This is sometimes defended on the ground that the initial status of external resources as unowned precludes any role for a Lockean Proviso. I shall show that this is a bad argument. Although I would argue that satisfaction of a Lockean Proviso is indeed a necessary condition for the appropriation of unowned things, I shall not attempt to establish that here. My goal here is more modest: to rebut one argument against the Lockean Proviso.