Is a human being a person or a machine? Is the mind a social construction or a formal device? It is both, William Frawley tells us, and by bringing together Vygotsky's sociocultural theory of the mind and cognitive science's computational model, he shows us how this not only can but must be. To do so, Frawley focuses on language, particularly on how the computational mind uses language to mediate the internal and the external during thought. By...