I've read several different treatises on Six Sigma and still can't say I understand it. I know the method looks at a manufactured product from a customer's point of view, not the plant's. It looks at the failure rate of a product at a very, very high level.
Six sigma is operational at a very few commercial printing plants. I can't tell you how effective it's been or the impact on net revenues. But I will say that I sure like the sound of it. It's bound to please customers, if you can make it work. In fact there's something good to be said about nearly all of these modern systems. We know that Toyota is gaining market share annually from domestic competitors. It really pains me that we in printing are still laboring with these ancient systems for our daily decisions.