This is an important book. I'm glad Israel put in the effort to make it short, because that magnifies the significance of his work. For me, this book provided something unique, which is a look into the way high level executives think about Agile. Yes, Israel does a good job of abstracting out the most important concepts about Agile and yes, his real life experiences shine through and add weight and credibility to what he says. However, this book might be the most valuable to those of us who are not senior executives, but who are involved in transforming companies and working with senior executives to do it. It seems to be true that those people, working at a level most of us never reach, think in ways that are unfamiliar to the rest of us, and this book provided me with insight into that thought process and point of view. It will help me to have conversations and to connect with those people who don't live and breathe Agile on a daily basis but who are crucial to the success of Agile initiatives in the enterprise. For that I am indebted to the author for taking the time to create this book. Thanks, Israel.