Six Problems I have with Six Sigma

by David C. Crosby

Source: http://bit.ly/amd9zv

The popularity of the Six Sigma program is truly amazing. An idea that started by extending the routine process capability study from plus and minus four sigma to six sigma has spawned a miniature industry. Software, training, books, lectures, magazine article, consulting, advertising, certification and on and on. An entire methodology has developed; it is truly astonishing. Some people are making a lot of good living practicing Six Sigma, however I seriously doubt if many defects have been prevented. 

It’s no secret that I don’t care for the Six Sigma idea. If you read my articles or books (my latest is The Zero Defects Option), I’m up front about it. However, if Six Sigma is what you want to do, it’s your option. As Nike says: “Just Do It.” If it pleases your boss or your customer, it would be foolish not to do it to do it.

I have big problems with the Six Sigma approach, and would not recommend it to anyone. Let me tell you why. If I’m wrong, maybe some Six Sigma belt-person will help me understand where I’m going wrong. This blog will take place in six parts, where I will tell you the six problems I have with Six Sigma.

Each part of David Crosby’s examination of six-sigma follow, each in its own subsection