This book is based on research that identified the way systems engineers, people who have to solve complex socio-technical problems, think and explains how to use holistic thinking, the combination of systems thinking, analysis and critical thinking, in a practical manner to produce innovative solutions to complex problems. There are many examples ranging from situations such as getting through a door when the lock is broken to docking the space shuttle to the international space station. This book provides the reader with frameworks and classifications systemically and systematically going from problems to solutions and then providing anecdotes and examples.