This book collects many ideas under the "Describe Less, Think More" or DLTM principle, formulates a strategic way of evaluating and managing several situations in the VUCA world called "Dark Ocean Strategy", and invite readers to find out the answers to these questions ... 1.What do you know about the business situation or living environment around you?2.What you should know about the business situation or living environment around you?3.What does VUCA mean to your leadership and your strategies?4.How dark is your life/business?5.What is the worth metrics and systems thinking for competitive advantage in the VUCA world?