A business that makes nothing but money is a poor business. — Henry Ford, innovating automaker - Jeffrey K. Liker

aggressively. In the case of the G21, he might have neglected it as

This operational excellence is based in part on tools and quality improvement methods

Plan-Do-Check-Act (PDCA) Cycle, a cornerstone of continuous improvement. The Japanese term for continuous improvement is kaizen and is the process of making incremental improvements, no matter how small, and achieving the lean goal of eliminating all waste that adds cost without adding to value.