Abstract
According to the so-called Hempel’s Dilemma, the thesis of physicalism is either false or
empty. Our intention in this paper is not to propose a solution to the Dilemma, but
rather to argue as follows: to the extent that Hempel’s Dilemma applies to physicalism it
equally applies to any theory that gives a deep-structure and changeable account of our
experience or of high-level theories. In particular, we will show that it also applies to
mind-body dualistic theories. The scope of Hempel’s Dilemma turns out to be very wide:
it is a special case of a general sceptical argument against changeable deep-structure
theories in and outside science.