Six Sigma roll player. In 1986, a unisys plant manager named Cliff Ames asked Dr. Harry to help him solve a chronic and very perplexing circuit board problem at his facility in Salt Lake City, Utah. After doing so, Ames expressed a desire to have Dr. Harry transfer his problem solving knowledge to a few key engineers. This way, after Dr. Harry left, Ames would be able to continue leveraging the knowledge. Dr. Harry agreed and went about fulfilling his promise to train the engineers sitting late in the office one night, Ames and Dr. Henry debated on what to call the people he was training. That's when Dr. Henry latched on to the analog of ninjas, chopping and punching, masterfully, manipulating their weapons, hands and feet to silently subdue the enemy.

They were humble, yet powerful creatures who would slip around in the shadows of data, sift through it and torture it with tools for making it confess what it knows. Dr. Harry proposed the term black belt and aims became visibly excited. That's it, he said, That's sexy, I can sell that. Hence, they began with black belts and green belts, while over time migrating into brown belts, yellow belts and white belts. Naturally, the different distinctions reflected scope and depth of understanding and application. Eventually the Knowledge of brown and black belts blurred.

In the end, brown belts fell out, leaving only master black belt, black, green, yellow and white belts. This is how the bass came into existence. Let's understand the importance of various roles.