Chaos Re-visited -- Dickeson

Common Causes of Chaos

At the same time, the day-to-day variances that fall within the limits are identified as inherent in the process. If you would modify these process variances you must change the system, says John Compton of the Fort Dearborn Co. You don't affect process variances by goal setting, imposing quotas, bonuses, threats and the like. This "common cause" variance is a product of chaos.