Success is no longer just about talent, or knowledge or skill. Today, it is also about freeing ourselves from the blinkers and blind spots that beset us all, and harnessing a critical new ingredient: cognitive diversity. Matthew Syed offers a radical new approach to success and a route map to how we can tackle our most complex challenges, such as obesity, terrorism and climate change. He draws upon cutting-edge research in psychology, economics and anthropology, and takes lessons from a dazzling range of case studies, including the catastrophic intelligence failings of the CIA before 9/11, a communication breakdown at the top of Mount Everest and a moving tale of deradicalisation in America's Deep South.