Chapter Summary. Both Aristotle’s investigation of animals and his investigation of soul begin with long and detailed methodological discussions, and both of those discussions eventually take the form of a series of questions that the investigation needs to answer. The two discussions are quite different, and the questions that are highlighted are also different – and yet both are recognizably framed in terms of Aristotle’s Analytics and Metaphysics. In the next two chapters we will focus on PA i and de An. i.1 as case studies of how Aristotle’s views about the way differences in the target of inquiry, as well as our epistemic access to, and our qua-perspective on, the target, must influence the norms that govern that inquiry. These case studies will also be an opportunity to investigate the ways in which the ‘erotetic shape’ of an inquiry is provided by Aristotle’s metaphysics and epistemology and to explore the way in which Aristotle’s methodological approach to an investigation is influenced by the ‘state of the art’ in a given domain.