A friend of mine was building a house which involved a couple of workers from different companies. He was not happy with the progress and how they did that. He

A friend of mine was building a house which involved a couple of workers from different companies. He was not happy with the progress and how they did that. He didn’t really had any idea of how to construct a house, but he was a 6sigma black belt quality manager. One day, he showed up at the construction site, got all the workers together, created a fishbone diagram with them and led the rest of the constructing like a typical project.