Required reading prior to my Six Sigma project at work, this was a very clear and informative book. The story is cheesy, and the writing is simplistic, but that's a good thing, since the text is intended as a brief primer on the subject. The Six Sigma process is explained with regards to a pizza company attempting to improve customer service and its bottom line, and it can be easily understood by any reader. It is an excellent overview for someone with little to no knowledge of the concept of Six Sigma and its benefits. This is a short and extremely fast read that can be finished in under an hour.