Philosophers have thought that there are insuperable limits to rationally opposing skepticism, to pursuing epistemological investigations without substantial presuppositions, or to explaining knowledge in general. In this chapter, it is argued that there are no such constraints on an evidentialist approach. Keywords:circularity,
evidence,
problem of the criterion,
reliabilism,
Roderick Chisholm,
self-refutation,
skepticism,
Barry Stroud