It is possible to produce something that is grammatical either by chance or under the supervision of another. To be proficient in grammar, then, one must both produce what is grammatical and produce it grammatically, that is, in accord with knowledge of grammar in oneself.
Ernest SosaFlourishing is properly the main human end, and flourishing is activity of soul that succeeds in accord with virtue.
Ernest SosaLowered reliability obviously yields a lesser competence. But lowered breadth does so as well.
Ernest SosaWhen 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 SosaPhilosophers do need to have intuitions of various specific sorts: ethical, metaphysical, etc., depending on their targeted subject matter. And they must make intuition reports, as they record the contents of their intuitions. But they need not go into whether an intuition has been enjoyed.
Ernest Sosa