Abstract
The claim that moral philosophers have something to learn from recent neo-Darwinian theory cannot be sustained – at least, not in the case of the three theses characteristic of the latter on which I concentrate. The first thesis, reductionism, is open to some serious, and familiar, objections. Neo-Darwinism can escape those objections only by weakening its position to a point at which it can no longer be described as distinctively reductionist. The second, atavism, mistakenly attempts to generalise from the apparent persistence of` ‘vestigial’ behaviour patterns. Third, neo-Darwinists are frequently guilty of a number of confusions over the relation between fact and value. In conclusion, I point out that neo-Darwinism derives a certain ideological dynamic from the misleading supposition that patterns of explanation which succeed in one area necessarily apply in others.