"Research in Philosophy and Technology: Volume 19" advances philosophical reflections on technology through a focus on metaphysical and epistemological issues. The contributors employ the resources of both the phenomenological and analytical traditions of contemporary philosophy in their work. Contributions include general proposals for the reform of the philosophy of technology; examinations of the work of major philosophers including Wittgenstein, Heidegger, Jonas, Ihde, and Merleau-Ponty; an extended argument for a more careful delineation of the difference between science and technology; a new analysis of the concept of efficiency; extended studies of the fate of skill in the information age and the place of the body in virtual reality. Themed review essays and general reviews complement the chapters.