A subject that playwright Alfred Jarry named, and Paul McCartney refers to in the Beatles song "Maxwell's Silver Hammer." Jarry says: "Pataphysics, whose etymological spelling should be "EPI" and actual orthography 'pataphysics, preceded by an apostrophe so as to avoid a simple pun, is the science of that which is superinduced upon metaphysics, whether within or beyond the latter's limitations, extending as far beyond metaphysics as the latter extends beyond physics."