The paper discusses the thesis of extended belief and its implications for the possibility of extending ordinary, personal level knowledge. A common worry is that knowledge will overextend, that there will be ‘cognitive bloat’. If the subject’s standing beliefs can be realized in devices such as notebooks and smart phones, what is there to prevent the conclusion that she knows everything stored on such devices? One response to this worry is to block the move from belief to knowledge, and argue (...) that these externally stored beliefs, although reliable, do not qualify as knowledge. I argue, instead, that the fundamental problem arises at the level of belief. We prevent bloating of knowledge by preventing the bloating of belief. To do so, I argue, we need to take seriously Clark and Chalmers’ suggestion that what is distinctive of belief is its role in folk psychological explanations. Paying attention to this role shows that the usual examples, such as Otto’s notebook information, do not qualify as beliefs. To qualify, the external information would have to be much more directly connected to, and deeply integrated into, the subject’s overall system of beliefs and desires. (shrink)

There is a view in the literature around beliefs that evidence responsiveness is a necessary feature of beliefs. The reasoning is that because beliefs are governed by truth they must be evidence responsive. A mental state that fails to be evidence responsive, therefore, could not be a belief as it could not be governed by truth. The implication is that even those evidence-resistant mental states that appear to be beliefs are in fact something else. I argue that evidence resistance is (...) a feature of at least some beliefs, so evidence responsiveness cannot be a necessary feature of belief. (shrink)