DevSecOps is a growing field with many opportunities, but many people are not sure where to start. We all know that the security industry is exploding with new tools and ideas as well as a great deal of hype surrounding them. It can be difficult to distinguish between good and bad advice when it comes to these tools and services. To best predict the future, we often have to go back in time. Edwards Deming is a management scientist and one of the most outstanding successes in modern leadership. This article provides an overview of the origins of Deming's core theories to help you better understand DevSecOps best practices. Deming's famous 14 points are often used as a corollary for DevOps practices. Deming published his last book, The New Economics for Industry, Government, and Education, in 1993, the year of his death. In this book, he defined something called the System of Profound Knowledge, based on 70 years of theoretical and empirical experience. According to the System of Profound Knowledge, four lenses are necessary to better understand complex systems. Cyber concerns and issues of today fall into the category of complex systems.