How do you make your way in a world that is changing at an unprecedented rate? Why do we have less and less time? How can our government act against threats before they happen? This book is about change – from the small and seemingly insignificant transitions in our day-to-day lives, to the big and almost incomprehensible shifts in human history. Drawing on expert advice and often complex theories, the authors of the bestselling The Decision Book present fifty simple and effective models to help us make sense of change in our world.