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 it’s “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 NUMMI Tour Tale #3: The Power of Why