the extended cognition thesis might really be true. The holism question is an open and empirical one—the reason to attempt full-blooded extended cognitive science is that the world might really be that way and such methods may capture that. Such questions cannot be settled a priori by any kind of essentialist arguments about what is and what is not a cognitive system. (Chemero & Silberstein, 2008, p. 132.)
A. Chemero and M. Silberstein, “Defending Extended Cognition”, In Love, McRae, and Sloutsky (eds.), Proceedings of the 30th Annual Meeting of the Cognitive Science Society, 129-134, 2008.