Abstract

The internalism versus externalism debate in philosophy of mind has proceeded to a higher level, as Wilson’s remarkable book shows. Wilson describes how the metaphysical assumptions of internalism, which holds that minds are individuated by nervous systems without reference to anything external, must be seriously questioned. Many of these assumptions date from the nineteenth century, when psychology turned sharply individualistic in order to set up disciplinary boundaries against biology, sociology, and anthropology. However, these assumptions have become challengeable by the modified understandings of “individuals” and their minds that have arrived with the maturation of these “fragile sciences.”