  The second kind of belief referred to in I 13, the kind which the Skeptic cannot have, is a belief which Frede characterizes as one which ‘involve[s] an assumption or claim about one of the nonevident objects of scientific inquiry ’ (18).  These beliefs are not forced upon one, but arise through the rational weighing up of evidence on either side of a question. Frede’s (and Sextus’) characterization of these beliefs as being ‘about one of the nonevident objects of scientific enquiry’ might make it seem as though it is beliefs with a certain content that will not be entertained by the skeptic, but in fact Frede has something different in mind:  