A great interview with Dr. Goldratt. Many of his comments remind me of the MIT Sloan beer distribution game. What I continue to get from reading Dr. Goldratt is that people solve problems, not processes. While the Theory of Constraints, Six Sigma, Lean, are all good tools, they are implemented by people. Just think about how Bill Smith started using Six Sigma at Motorola or how Taiichi Ohno brought the Toyota Production System together. These were people using the scientific method to solve problems and ultimately improve their companies.