Behavioral and Brain Sciences

Open Peer Commentary
van Gelder: The dynamical hypothesis

All information processing entails computation, or, If R. A. Fisher had been a cognitive scientist . . .

Eric Dietrich a1 and Arthur B. Markman a2
a1 Department of Philosophy, Binghamton University, Binghamton, NY 13902
a2 Department of Psychology, Columbia University, New York, NY 10027


We argue that the dynamical and computational hypotheses are compatible and in fact need each other: they are about different aspects of cognition. However, only computationalism is about the information-processing aspect. We then argue that any form of information processing relying on matching and comparing, as cognition does, must use discrete representations and computations defined over them.