Mitcham has worked for many years on bridging the gap between philosophy (his specialist discipline) and technology (the one with which he has been engaging). He is probably the most eminent and respected exponent of that relationship, having established his credentials through his seminal book Thinking through Technology: The Path between Engineering and Philosophy (Mitcham, 1994). The title of the book is interesting, given that it is engineering with which he is seeking a bridge. Twenty-five years later, with this latest compilation of essays, he feels that the bridge has yet to be built. As in his groundbreaking book of 1994, Mitcham is nothing if not comprehensive in this collection. Reviewing it is a daunting task. Although the essays are collated into three parts, the logic for doing so was not quite convincing for me. So, I shall engage with the book under the four broad themes of metaphysics and epistemology (largely drawing on the Introduction,