How valuable is the market mechanism for practical morality? What is its moral standing? We can scarcely doubt that as individuals we do value tremendously the opportunity of using markets. Indeed, without access to markets most of us would perish, since we don't typically produce the things that we need to survive. If we could somehow survive without using markets at all, our quality of life would be rather abysmal. It is natural to feel that an institution that is so (...) crucial to our well-being must be valuable. And since moral evaluation can hardly be indifferent to our interests and their fulfillment, it might appear that there is nothing much to discuss here. The market's moral standing “has to be” high. (shrink)

If one is an egalitarian, what should one want to equalize? Opportunities or outcomes? Resources or welfare? These positions are usually conceived to be very different. I argue in this paper that the distinction is misconceived: the only coherent conception of resource equality implies welfare equality, in an appropriately abstract description of the problem. In this section, I motivate the program which the rest of the paper carries out.

Ernst Mayr has argued that Darwinian theory discredited essentialist modes of thought and replaced them with what he has called "population thinking". In this paper, I characterize essentialism as embodying a certain conception of how variation in nature is to be explained, and show how this conception was undermined by evolutionary theory. The Darwinian doctrine of evolutionary gradualism makes it impossible to say exactly where one species ends and another begins; such line-drawing problems are often taken to be the decisive (...) reason for thinking that essentialism is untenable. However, according to the view of essentialism I suggest, this familiar objection is not fatal to essentialism. It is rather the essentialist's use of what I call the natural state model for explaining variation which clashes with evolutionary theory. This model implemented the essentialist's requirement that properties of populations be defined in terms of properties of member organisms. Requiring such constituent definitions is reductionistic in spirit; additionally, evolutionary theory shows that such definitions are not available, and, moreover, that they are not needed to legitimize population-level concepts. Population thinking involves the thesis that population concepts may be legitimized by showing their connections with each other, even when they are not reducible to concepts applying at lower levels of organization. In the paper, I develop these points by describing Aristotle's ideas on the origins of biological variation; they are a classic formulation of the natural state model. I also describe how the development of statistical ideas in the 19th century involved an abandoning of the natural state model. (shrink)

This essay is a review of Ronald Dworkin's recent essay on equality of resources. Many of the ideas discussed by Dworkin have also been examined by economists with, I believe, considerable insight. Unfortunately, economists tend to write for economists, not for philosophers, and their insights are seldom communicated properly to noneconomists. Of course, the same criticism can be levied on philosophers! But perhaps legal theorists are less subject to this criticism. One of the great contributions of Dworkin is that he (...) is very readable; and the quality of his exposition makes these ideas accessible to a wide audience of philosophers, lawyers, and social scientists in general. (shrink)

If one is an egalitarian, what should one want to equalize? Opportunities or outcomes? Resources or welfare? These positions are usually conceived to be very different. I argue in this paper that the distinction is misconceived: the only coherent conception of resource equality implies welfare equality, in an appropriately abstract description of the problem. In this section, I motivate the program which the rest of the paper carries out.