With his energetic tone and common sense approach, Maskell shows numbers people at all levels how that their responsibility during a Lean implementation is not to simply read the conventional bottom-line profit-and-loss results, but to measure and reflect on the processes influencing that bottom line. He provides the rationale, approaches, and tools that will lead to organizations that are flexible and responsive enough to function optimally in turbulent and unpredictable times. The book is updated throughout to reflect recent advances. Notably, it eliminates activity- based costing and management (ABC/M) in favor of the much more expedient value-stream accounting methods that have been tried and tested in diverse companies over the last ten years.