Nothing is perfect.
Despite this, man continually searches for perfection in all aspects of his life. The bad things that need to be overhauled are easily identified and the good aspects of our lives are prioritized for later tuneups. In either case, things can always be improved. Once an organization has reached a certain level of quality, change should be incremental, not monumental. Creating lists of things on which to improve and bettering each item a step at a time is the best way to maintain the level of quality and secure for future growth.