Daniel Dennett's book, Darwin's Dangerous Idea, offers a naturalistic
teleology and a theory of the intentionality of the mental. Both are g
rounded in a neo-Darwinian account of evolutionary adaptation. I argue
that Dennett's empirical assumptions about the evolution of psycholog
ical phenotypes may well be unwarranted; and that, in any event, the i
ntentionality of minds is quite different from, and not reducible to,
the intensionality of selection.