I enjoyed this book very much, not least because of the freshness of its approach to a subject that can easily become hard for the non-scientific mind to grasp. The theory of ‘can and can’t’ is an intriguing way of describing problems that are not only scientific (it describes very well what a storyteller does, for instance), and Marletto’s account of some things I thought I more or less understood (the nature of digital information, for one) illuminated them from an angle that showed them more clearly than I’d seen them before.