Plan-Do-Check-Act (PDCA) Cycle, a cornerstone of continuous improvement. The Japanese term for continuous improvement is kaizen and is the process of… - Jeffrey K. Liker

In the abstract, science is hard to define, and there are endless philosophical debates over what it means. Rother is not focused as much on defining science per se, but rather on developing a practical approach to teaching people to think scientifically in everyday life. He describes it as:8 a mindset, or way of looking at the world/responding to goals and problems, that’s characterized by . . . Acknowledging that our comprehension is always incomplete and possibly wrong. Assuming that answers will be found by test rather than just deliberation. (You make predictions and test them with experiments.) Appreciating that differences between what we predict will happen and what actually happens can be a useful source of learning and corrective adjustment.

Toyota’s concept of a good process is one that expects and reveals problems, without blame, not one that is problem-free.

We have to change the culture from one in which people simply do their own job in their own function to make their own numbers look good (a vertical focus) to one in which people are focused horizontally on the customer and on improving value streams that deliver value across functions.