Full Idea
If sense experiences are non-epistemic they may be infallible, but they are unsuitable for providing the foundations for other beliefs.
Gist of Idea
Infallible sensations can't be foundations if they are non-epistemic
Source
Bernecker / Dretske (Knowledge:Readings in Cont.Epist [2000], Pt.III Int)
Book Reference
'Knowledge: readings in contemp epistemology', ed/tr. Bernecker/Dretske [OUP 2000], p.232
A Reaction
If we experience flashing lights in the retina, or an afterimage, we don't think we are seeing objects, so why is normal perception different? Ans: because it is supported by judgement.