The bad argument : one of the biggest mistakes in philosophy in the past several centuries -- The intentionality of perceptual experiences -- Further developments of the argument against the bad argument -- How perceptual intentionality works, part one : basic features, causation, and intentional content -- How perceptual intentionality works, part two : extending the analysis to non-basic features -- Disjunctivism -- Unconscious perception -- Classical theories of perception skepticism and the classical theories of perception.