I defend the historical definition of "function" originally given in my Language, Thought and Other Biological Categories (1984a). The definition was not offered in the spirit of conceptual analysis but is more akin to a theoretical definition of "function". A major theme is that nonhistorical analyses of "function" fail to deal adequately with items that are not capable of performing their functions.

In this paper I defend an etiological theory of biological functions (according to which the proper function of a trait is the effect for which it was selected by natural selection) against three objections which have been influential. I argue, contrary to Millikan, that it is wrong to base our defense of the theory on a rejection of conceptual analysis, for conceptual analysis does have an important role in philosophy of science. I also argue that biology requires a normative notion (...) of a "proper function", and that a normative notion is not ahistorical. (shrink)

Considered as a form of love, sex is clearly involved in the total set of ethical relationships that exists between persons and is therefore ethically significant.

Philosophy of biology has a long and honourable history. Indeed, like most of the great intellectual achievements of the Western World, it goes back to the Greeks. However, until recently in this century, it was sadly neglected. With a few noteworthy exceptions, someone wishing to delve into the subject had to choose between extremes of insipid vitalism on the one hand, and sterile formalizations of the most elementary biological principles on the other. Whilst philosophy of physics pushed confidently ahead, the (...) philosophy of biology languished. In the past decade, however, things have changed dramatically. A number of energetic and thoughtful young philosophers have made real efforts to master the outlines and details of contemporary biology. They have shown that many stimulating problems emerge when analytic skills are turned towards the life-sciences, particularly if one does not feeI con strained to stay only with theoretical parts of biology, but can range over to more medical parts of the spectrum. At the same time, biology itself has had one of the most fruitful yet turbulent periods in its whole history, and more and more biologists have grown to see that many of the problems they face take them beyond the narrow confines of empiric al science: a broader perspective is needed. (shrink)