Jean Piaget, along with Sigmund Freud and B. F. Skinner, is one of the most influential thinkers in psychology. His influence on developmental and cognitive psychology, pedagogy and the so-called cognitive revolution is without doubt. The contributors to the book under review aim to show his past, contemporary as well as future relevance to important areas of psychology. I argue that they fail because they use Piaget’s own terminology, instead of explaining his ideas and relevance in a way accessible to someone not already familiar with or sceptical about his assumptions and ideas. Thus, the book neither meets the authors’ own stated goals, nor provides an accessible exposition of Piaget for the uninitiated or sceptical reader. A companion book like this one should help give answers to questions which someone unfamiliar with or sceptical of, but curious about, Piaget’s work would ask.