The book is about being "missional" and intentional about reaching the "emerging generations" (I'm still getting used to both of those terms), and, as you might expect, very thought provoking. Since I'm early into the book I can't give a critique overall. But his synopsis of what happens to believers and how they eventually move totally into a Christian sub-culture and have no contact with the non-Christian world is dead on. The last step of 4 is becoming Jonah.
I'll probably post more about it as I progress through the book.
Kimball's writing style is good for me. Now if I could convince him to do something different with his chosen hair cut! Think "Johnny Bravo".