Having worked in Quality Control in a major multinational, and studied and lecture statistics, I have seen that significant decreases in quality are accepted in exchange for increased consistency.
Quality is the measure of how closely a finished product meets its design spec. McDonald's products are insanely high quality, despite not being very good - a Big Mac was never designed to be healthy and satisfying in the first place!
A relevant example of this is organizations who are CMM Level 5 certified.
A relevant example of this is organizations who are CMM Level 5 certified.