One of the best accounting books I've ever read about Lean from a CFO's perspective is Real Numbers by Jean Cunningham, one of the authors of that book.But the audience for that book is CEOs, operating managers, and anyone working on the plant floor. The book is also relevant for health care and other service industry professionals.Real Numbers was written a decade ago, but listening to Jean who is so kind and generous reminds us that the lean message is still relevant, impactful, and real.