Very realistic. Another advantage is that when people misuse the concepts you will have the clout to tell them that they are doing so.
One warning - when a top manager gets it in his or her head that something is important, they don’t want to hear otherwise. The head of our center hired a couple of change consultants, and all of us managers went to meetings and offsites where we visualized the future all all that other stuff. It all went well until one meeting when their vision of our future diverged from his vision of our future.
They never returned.
So Six Sigma is the same shit with different, and more expensive, packaging? Had a president who forced on us the system in whatever book he was reading. Really, it could help your planning if you noted what was on his desk and read faster than him, but if you read the first chapter in the book store you got the gist because 95% of those books is filler. I am thankful he got fired before he got to Six Sigma (he was heading into ISO 9000 at the time). But really, Six Sigma is so 1999! He’d have been through 30 other books by now.