Abstract The degrees of belief rational agents should be guided by the evidence available to them. This paper takes as a starting point view—argued elsewhere—that formal model best able capture this idea is one that represents using Dempster–Shafer functions. However, not only respect evidence; they also guide decision and action. Whatever we adopt, need theory works with it: input so represent...

Abstract The paper explains how to integrate the knowledge-first approach epistemology with intellectualist thesis that knowing-how is a kind of knowing-that, emphasis on their role in practical reasoning. One component this integration belief-based account desire.