mental, being the power of minds to represent or symbolize over, things, properties and states of affairs in the external world. Causal covariance, about-ness and the like are not enough: maps, for instance, only have a 'derived' intentionality, a mere after-image of the real thing.

Searle also introduces a technical term the Background, which, according to him, has been the source of much philosophical discussion ("though I have been arguing for this thesis for almost twenty years,"