 Although some of the themes in current discussions of nonconceptual content have surfaced at various times in recent philosophical thinking (within the philosophy of perception, see, e.g., Dretske 1969, 1981. Within philosophy of cognitive science, see, e.g., Stich 1978), the notion of nonconceptual content was explicitly introduced into analytical philosophy by Gareth Evans (Evans 1982). As part of his general discussion of the role of information-links in making possible demonstrative and other types of identification, Evans develops the idea that the information yielded by the perceptual systems (including somatic proprioception) is nonconceptual. This nonconceptual information, he argues, is initially unconscious but becomes conscious when it serves as input to a thinking, concept-applying, and reasoning system.