Abstract

The Hypothesis of Extended Cognition holds that the mind need not be constrained within biological boundaries. However, conditions must be provided to set a principled outer limit on cognitive extension, or implausibly many cases will be implicated. I argue that, for the case of extended beliefs at least, such conditions must pay attention to a mental state's causal history, in addition to its current functional poise. Extended resources can house an individual's beliefs, I propose, only if she has taken responsibility for their sources in a suitable way