Michael Ruse

This paper considers the question of whether the explanation of homosexual orientation offered by Sigmund Freud qualifies as a genuine explanation, judged by the criteria of the social sciences. It is argued that the explanation, namely that homosexual orientation is a function of atypical parental influences, is indeed an explanation of the kind found in the social sciences. Nevertheless, it is concluded that to date Freud's hypotheses about homosexuality are no more than unproven speculations. Also considered is the question of whether the very topic of homosexuality falls or ought to fall within the domain of medical inquiry. CiteULike Connotea Del.icio.us What's this?

In evolutionary theory, the idea of organic evolution is linked to the social doctrine or ideology of progress. This chapter explores the relationship between evolution and the idea of social progress by first considering the definitions of evolution, social or cultural progress, and providence. It then comments on the science of Charles Darwin's Origin of Species, which it argues was not perfect because Darwin encountered a lot of problems with heredity and with the fossil record. Physicists argued that the earth's lifespan is not long enough to accomodate a leisurely process such as natural selection. In general, however, the Origin of Species is a pretty good attempt at producing epistemically satisfying science. The emergence of Mendelian genetics, the building of population genetics, and the work of the empiricists fleshing out the theoretical skeleton gave rise to modern evolutionary biology.

What are biological species? Aristotelians and Lockeans agree that they are natural kinds; but, evolutionary theory shows that neither traditional philosophical approach is truly adequate. Recently, Michael Ghiselin and David Hull have argued that species are individuals. This claim is shown to be against the spirit of much modern biology. It is concluded that species are natural kinds of a sort, and that any 'objectivity' they possess comes from their being at the focus of a consilience of inductions.

A common complaint of biologists is that their subject receives poor treatment from philosophers—it gets but a fraction of the attention accorded to physics and chemistry, and what little it does receive, is usually of the type where ‘All swans are white’ is taken to be a paradigmatic example of the state of biological thinking. It cannot be denied that this complaint is, to a great extent, justified; however, there are some notable breaches in the wall of ignorance and silence, amongst which must be numbered The Ascent of Life by T.A. Goudge. In this book, starting from what is obviously a very wide knowledge of biology, Goudge attempts a careful and thorough analysis of one of the major achievements of biological thought, evolutionary theory. The conclusions that Goudge draws are many; nevertheless, one can discern running through them a common theme, namely that whilst evolutionary theory is indeed a legitimate branch of science, to assume that it is a science of the same nature as physics and chemistry would be a grave error. Goudge argues that, despite certain similarities to other branches of science, the essential aims, methods and results of evolutionary theory are peculiar unto itself.