Walsh, a practitioner of R&D in artificial intelligence, offers a down-to-earth and up-to-date account of all aspects of the field. Examples of things given special attention are (1) (doubtfulness of) a future tech "singularity", (2) the (mis)use of AI in warfare, and (3) AI's impact on humans' jobs. There are quite a few mentions of threats to privacy, but far less total space is given to privacy than to jobs (an imbalance that is all too common in works on AI). The book's most annoying trait, oddly, is its pervasive misspelling of the name Leibniz.