Perception is not the only area in which philosophy has failed to use relevant science. Some recent discussions in the metaphysics of time, causation, the nature of physical bodies, and so on feed on intuitive puzzles and propose points of view that lack the slightest touch with what sciences says about these matters. If philosophy is not to slide toward irrelevance and become a puzzle-game-playing discipline, good mainly for teaching the young to think clearly, some central parts of philosophy should broaden their horizons.