I have recently read a book introducing Six Sigma, and they talked about moving from two to three sigma. Two questions here how do you evaluate where you are on the road to Six Sigma, and is Six Sigma something you can ever achieve or something you

I have recently read a book introducing Six Sigma, and they talked about moving from two to three sigma. Two questions here how do you evaluate where you are on the road to Six Sigma, and is Six Sigma something you can ever achieve or something you continually strive for?