This final chapter shows how further enquiry into artefacts’ metaphysics forces us to return to artefacts’ physics. At the same time, this further enquiry is in turn shown to fall outside the interests of a metaphysician and to be the task of a natural philosopher. For this reason, the chapter looks at artefacts as objects of inquiry and distinguishes between perspective of the natural scientist, the maker, and the user on the one hand, and the perspective of the metaphysician on the other. This discussion allows us to wrap up the results, to reassess the relationship between the Physics and the Metaphysics, and to evaluate the respective contributions of these works to Aristotle’s ontology of artefacts.