Six sigma originates from statistical models of manufacturing processes. It was introduced in 1986 by an American engineer at Motorola, Bill Smith.
Using empiracal and statistical quality management methods. It identifies and removes causes and defects while minimizing variability. When in place, it equates to only 3-4 errors per million attempts.
Ask yourself again. How does your pest control, chimney cleaning and log cabin building service partner(s), contrast to Neolithic Architecture, and Six Sigma management?