"5/67 Problem Solving" is a book that teaches the reader the most successful and efficient ways to solve problems. Whether it is a Stupid, Difficult, or Wicked Problem. Humphreys and Bertain have leveraged their decades of problem-solving expertise using a unique variation of the “20/80 Rule” that they call “5/67 Thinking.” This book creates what is essentially a problem solving guidebook for executives, managers, and just about anyone. They introduce the reader to a number of accompanying concepts and tools like: 5/67 Thinking, The Definition of Success, The No Blame Game and Pioneers and Settlers. These tools evolved as the authors have delivered their problem solving finesse to a wide range of customers. The approach defined in the book will assist any future problem-solver in tackling the hardest problems – even Wicked Problems. It is intended to be a quick read. Enjoy the read.