 Yet another question is whether functional theories can accommodate non-standard views about the location of mental states, such as the hypothesis of extended cognition, which maintains that certain mental states such as memories—and not just their representational contents—can reside outside the head. This question has implications not only for the viability of a functionalist characterization of memory, but also of beliefs, emotions, and moods. (See Clark and Chalmers 2002, Clark, 2008, Adams and Aizawa 2008, Rupert 2009, Sprevack 2009, and the essays in Menary, 2010, for further discussion.)