God, grant me the serenity to accept the things I cannot change, The courage to change the things I can, And the wisdom to know the difference. (Serenity Prayer, Reinhold Niebuhr)

Self Control

To place human beings in a state of self-control we must provide people with the following (Juran 2005):

Knowledge of what they are supposed to do

This includes clear and complete work procedures, performance standards, and adequate selection and training of personnel


Knowledge of what they are actually doing (performance)

This includes adequate review of work and feedback of review results


Ability and desire to regulate the process for minimum variation

This includes a process and job design capable of meeting quality objectives; process adjustments that will minimize variation; adequate worker training in adjusting the process; process maintenance to maintain the inherent process capability; a strong quality culture and environment


The three basic criteria for self-control make possible a separation of defects into categories of “controllability”, of which the most important are:

Whether the defects or nonconformities in a plant are mainly management controllable is of the highest order of importance. In the experience of the author, defects are about 80% management controllable.