When you dream, your perceptual (and other) competence is affected. You are then unable to get it right competently with the beliefs in your dream.
Ernest SosaIf we have a better understanding of knowledge than we do of such justification or competence, then we can explain the latter through the former.
Ernest SosaWhen we speak of ordinary unqualified knowledge, my thought is that we are implicitly relativizing to the standards imposed by our evolution-derived humanity. These are standards that determine when we consider it appropriate to store beliefs just as a human being, rather than in one's capacity as an expert of one or another sort. Such stored beliefs are to be available for later use in one's own thought or in testimony to others.
Ernest Sosa