Don't waste your time or money on this lightweight. I would never have finished it except it's the only thing I brought with me on the plane. It made the Skymall magazine look pretty good! So-called product development "concepts" introduced (modular design, platform design, custom design) are nothing more than common sense and already in practice widely. The book goes on to describe a needlessly complex system of databases with names like "technical requirements flow-down matrix", "product experience domain", and "component design compliance matrix". This isn't Lean at all. This is creation of muda - wasted effort. And the story-telling approach which unfolds as a conversation between two engineers is literally painful to read. It sounds nothing like any natural conversation I've ever heard. It's thin, it's light, it's cheap, and it's worthless. Stay away.