It really brings into focus the importance of many tools, and concepts used. For example, getting rid of Non-Value add steps ("stuff" the customer deosn't want to pay for, adds no value, but yet could result in defects) reduces complexity and helps improve capability. Or reducing variation in order to improve capability.
What are your thoughts on Rolled Throughput Yield?
Additionally, companies are shocked to learn that most of their material and labor variance from Financial reports can be found when RTY is calculated.