Abstract

Arguments that cognition or minds can be extended regularly invoke an analogy with Dawkins’ argument that phenotypes can be extended. I argue that there are two neglected ways in which those two boundary-breaking theses are complementary. Much of the argument of The Extended Phenotype concerns parasite phenotypes expressed in the behaviour of host organisms. But the options Dawkins considers for this extended manipulation are cognitively internalist. If we view cognition as extended, we can recognise a wider range of vulnerabilities for exploitation. On the other hand, the analogies drawn with Dawkins almost always emphasise the benefit to the individual agent in being cognitively extended. Taking Dawkins’ concerns about manipulation and exploitation more seriously leads to a more contested, less optimistic picture of extended cognition and minds. This second line of thinking follows Sterelny’s lead, but I argue that hostility presents worse and more pervasive problems that he allows.