 The details of Hume’s “science of man” show the weakness of our ordinary cognitive capacity; at the same time it offers an argument for staying within confines of (potential) ordinary experience. Hume’s cognitive science has a normative consequence in that knowledge of it is supposed to reduce the inclination toward intellectual overreaching. For, the practitioners of “mitigated scepticism” (cf. the “modest scepticism” of “Appendix” to the Treatise) will not 