frontiers of cognitive science, in the (still somewhat dissident) movement toward a picture of human beings as having “extended” or “embedded” cognition. Andy Clark, one of the leading figures in the extended-mind literature, writes that “advanced cognition depends crucially on our ability to dissipate reasoning: to diffuse achieved knowledge and practical wisdom through complex structures, and to reduce the loads on individual brains by locating those brains in complex webs of linguistic, social, political and institutional constraints.”2 Such constraints might be called cultural jigs.
