This is the slide that makes executives gasp. In traditional management theory, you want your team running at 95% or 100% capacity. Reinertsen uses math to show that the optimal utilization for a product development team is roughly .

A physical book is excellent for deep reading. But product development is not a linear activity. It is chaotic, iterative, and stressful. When you are in a daily stand-up or a critical design review, you do not have time to flip through 300 pages. You need instant, text-searchable access to specific heuristics.

The principles of product development flow offer a powerful framework for achieving success in product development. By understanding and applying these principles, teams can create a streamlined and efficient development process that enables them to deliver high-quality products quickly, while minimizing waste and maximizing value. While challenges may arise, by communicating clearly, using visualization tools, and establishing feedback mechanisms, teams can overcome obstacles and achieve success.

: High variability is inherent in innovation. The goal is to reduce its negative economic impact while keeping the benefits of "new information".