NUMMI Tour Tale #1: Why Fix the Escalator?NUMMI Tour Tale #2: The Power of Reynolds Wrap I think, by now, that Toyota is pretty famous for its “5 Whys” approach for root cause problem solving. Asking why five times, in succession, will likely get to the root cause of any problem. I’ve seen it applied to safety investigations, for example — why did the worker trip and fall? Usually, it points back to training and … Continue reading Why Toyota Explains “Why”: A NUMMI Lesson in Respect for People