  From Clark’s perspective, however, there is nothing motley, as Adams and Aizawa claim, about the brain+ tool systems that he believes constitute a legitimate kind for scientific investigation. Moreover, the processes by which Otto and Inga locate MoMA are not, as Rupert insists, vastly different. Once one steps back form the physical particularities of the constituents of extended cognitive systems and focuses just on the functional, computational, roles they play, such systems are identical, or very similar, to wholly brain-bound cognitive systems.