I have to admit, there is not a lot of new material here. However, Tribal Unity is proof that all business books do not have to outline a patented process to be valuable. Em does a fabulous job of mixing the practices and techniques of others into a winning formula for her tribe's world-class agile implementation. Each chapter is full of things it took me years to discover on my own, liberally annotated for those hungry to go deeper. I've had the pleasure of meeting Em in person, and I can attest this is a true reflection of Em's contagious enthusiasm. I recommend this book to anyone looking to understand the potential of agile from an experience report, with enough pointers to recreate her tribe's success!