Abstract

According to the Extended knowledge dilemma, first formulated by Clark (Synthese 192:3757–3775, 2015) and subsequently reformulated by Carter et al. (in: Carter, Clark, Kallestrup, Palermos, Pritchard (eds) Extended epistemology, Oxford Univer- sity Press, Oxford, pp 331–351, 2018a), an agent’s interaction with a device can either give rise to knowledge or extended cognition, but not both at the same time. The dilemma rests on two substantive commitments: first, that knowledge by a subject requires that the subject be aware to some extent of some features of that knowledge’s sources and, second, that cognitive processes can only be extended if the subject is mostly unaware of the external object. The overwhelming response to the dilemma by proponents of extended knowledge has been to reconcile the demands of knowl- edge with the requirement that genuine extended cognition must lack any conscious encountering of the external artifact that features in the putative extended cognitive process. My approach, thus far unexplored, will be the opposite: I show how extended cognition can be made compatible with a wide range of agential attitudes, including an active form of epistemic hygiene. Consequently, I open the door for a new way of vindicating the possibility of extended knowledge, and call into question some assumptions that lie at the core of extended cognition theory.