Advanced technology is the cornerstone of modern society. Some of the reasons for studying the methods and applications of technology are that the subject serves as the basis of our everyday existence. We use technology on a daily basis, yet we know very little about the underlying concepts. We have no introduction to the subject matter, no principles of best behavior, and no theories. It is a time for change and this book fills that need. In this book, we are going to take a look at the evolving technology of uncertainty. Getting a handle on uncertainty permits a practitioner to perform in an excellent manner on tasks from management to applied technology. Modern government, such as the intelligence services, is exceedingly complicated, and uncertainty exists in almost every aspect of their daily lives. Business and finance have similar requirements so that participants can excel in all aspects of the decisions of everyday business life. The ability to deal with uncertainty is based on the methods of combining diverse possibilities into a coherent whole called a frame of discernment. Then, using a methodology known as Dempster-Shafer theory, evidence can be evaluated and a basis for decision making can be discerned. The effective use of Dempster-Shafer theory is conceptualized through computer methodology. Once determined to be unsolvable by experts, the methods contained herein have been solved by the author as a visiting professor in Switzerland. The methods are summarized in a research monograph entitled Managing Uncertainty and simplified in this book, along with an appropriate appendix that introduces the methodology. The book is comprised of introductory material followed by appropriate examples in essays that can be read in any order determined by the reader's interests. The essays are based on peer reviewed journal articles presented at technical conferences. The various essays can be addressed in any order as they are adjusted to fit the needs of practicing professionals. Harry Katzan is a professor, author, and consultant, and enjoys outdoor activities.