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 SosaIt is bad to want something that not even God could attain, especially when the impossibility becomes obvious.
Ernest SosaIt is also certain that when we assent to some piece of reasoning when our perception of it is lacking, then either we go wrong, or, if we do stumble on the truth, it is by accident, so that we cannot be sure that we are not in error.
Ernest SosaEpistemology now flourishes with various complementary approaches. This includes formal epistemology, experimental philosophy, cognitive science and psychology, including relevant brain science, and other philosophical subfields, such as metaphysics, action theory, language, and mind. It is not as though all questions of armchair, traditional epistemology are already settled conclusively, with unanimity or even consensus. We still need to reason our way together to a better view of those issues.
Ernest Sosa