More recently, James J. Gibson defended an ecological view of perception and thus of many aspects of the mind.
•
Enactivism builds upon the work of other scholars who could be considered as proto externalists; these include Gregory Bateson, James J. Gibson, Maurice Merleau-Ponty, Eleanor Rosch and many others.
Paul Boghossian raised an objection to the class of Twin-Earth-style arguments for externalism in the form of an argument that aims to show that externalism is incompatible with privileged self-knowledge.