Discussion of Darwinian evolutionary theory by philosophers has gone through a number of historical phases, from indifference (in the first hundred years), to criticism (in the 1960s and 70s), to enthusiasm and expansionism (since about 1980). This paper documents these phases and speculates about what, philosophically speaking, underlies them. It concludes with some comments on the present state of the evolutionary debate, where rapid and important changes within evolutionary theory may be passing by unnoticed by philosophers.

John Searle claims that intentional states require a set of non-intentional background capacities in order to function. He insists that this 'Background' should be construed naturalistically, in terms of the causal properties of biological brains. This paper examines the relationship between Searle's conception of the Background and his commitment to biological naturalism. It is first observed that the arguments Searle ventures in support of the Background's existence do not entail a naturalistic interpretation. Searle's claim that external realism is part of (...) the Background is then addressed. It is shown that this claim implies an implicit understanding of reality, which is presupposed by the intelligibility of any objective, scientific description. As a consequence, Searle's account of the Background's role is incompatible with his insistence that it can be comprehensively characterized in terms of biological capacities. I conclude by showing that, if the tension is resolved by rejecting biological naturalism, Searle's position takes a substantial step in the direction of Heideggerian phenomenology, a move Searle has emphatically resisted in his various exchanges with Hubert Dreyfus. (shrink)