How to Create a Bullet-proof Control Phase—Why Six Sigma Campaigns Lose Steam and What You Can Do about It
Most people recognize that a robust control phase is the key practice separating Six Sigma from other process control methodologies. Unfortunately, many Six Sigma programs do not practice a robust control phase—with the result that old habits take over, and improvements gradually degrade. Worse, nobody even knows it happened! Why would well-intentioned people allow this to happen?