ABSTRACT

"Knowledge" and "representation" are two central concepts in cognition. There have therefore been many debates around "representation" in the cognitive sciences, for example, in relation to "representation versus no representation" (Clancey, 1991; "Dreyfus and Representationalism," 2002; Greco, 1995a, 1995b; Paton & Neilson, 1999; Peterson, 1996; "Representation," 1995; Robinson & Bannon, 1991). Coming from completely different origins, R. A. Brooks (1991) and Dreyfus (2002) have been claiming, each one in a paper titled "Intelligence Without Representation," that intelligent behavior does not require rep-resentation 24 . In this book, we clearly claim that intelligent behavior does require representation, and that people construct and use representations. Another discussion concerns the "symbolic versus nonsymbolic representation." We come back to this issue, based on Goel's (1995) discussion of "sketches."