We should be guided by theory, not by numbers.
He that would run his company on visible figures alone will in time have neither company nor figures.
You cannot inspect quality into the product; it is already there.
The worker is not the problem. The problem is at the top! Management!
What we need to do is learn to work in the system, by which I mean that everybody, every team, every platform, every division, every component is there not for individual competitive profit or recognition, but for contribution to the system as a whole on a win-win basis.
Eighty-five percent of the reasons for failure are deficiencies in the systems and process rather than the employee. The role of management is to change the process rather than badgering individuals to do better.