Exciting new theories in neuroscience, psychology, and artificial intelligence are revealing minds like ours as predictive minds, forever trying to guess the incoming streams of sensory stimulation before they arrive. In this up-to-the-minute treatment, philosopher and cognitive scientist Andy Clark explores new ways of thinking about perception, action, and the embodied mind. This is a truly important book. It is evocatively written and reflects a truly gargantuan amount of work. It sets the stage for future debates not only about the empirical merits of Bayesian characterizations of human cognition, but also the broader philosophical picture in which such Bayesian characterizations are embedded. I predict that many of us will be reading, discussing, and analysing this book in the months and years to come.