 Assume everyday psychology is uniquely self-justifying in the way Grice suggests; then we must reject the suggestion that everyday psychology is just a rough and ready theory that we will (or could) eventually abandon without loss in favor of a more accurate and complete scientific theory of behavior. Grice objects on this ground to theories that regard only scientific knowledge as truly descriptive and explanatory and that relegate commonsense psychological explanation to a second-class role as a theory, useful in daily life, but not a theory we should endorse as a description or explanation of reality. Grice remarks: