In a world of permanent crisis, where change is the norm, Lean becomes fashionable. Yet, companies who have chosen to fundamentally transform itself, following the Lean principles and investing first on women and men, have, globally, and in the long term, the best economic results. This book, with simple concepts and illustrated with many examples, analyzes the main misconceptions about Lean, taking each time the views of managers and operational concerned. (Version anglaise de Petit guide Lean à l'usage des managers).