I would describe this book as a 'Lean' travel companion: If I should represent the journey in the book as a Value Stream Map it's components represent much value and minimum waste (carefully chosen descriptions and each sentence has a its own meaning/value). Very clear in separating the game and the tactics of scrum. Further a good explanation of the embedding / (gorilla)position of scrum in Agile, the contradiction with the traditional software development paradigm and the necessity of further upstream adoption. The book invites me to investigate further, in particular the tactics.