Too many business people tolerate mistakes and defects, instead of addressing the root cause and building a quality solution into the system itself. Following the Jidoka concept - actually both in our business and our personal lives - helps us to eliminate defects and mistakes; eliminate the waste that gets in the way of our margins. Once you understand the cause of the issue, implement a preventative measure. This is called Poka-Yoke. Poka-yoke is a Japanese term which means "mistake-proofing." Insert a relevant poka-yoke into your system that will make it impossible to make the mistake again.