In Range, David Epstein examines the world’s most successful athletes, artists, musicians, inventors, forecasters and scientists. 
He discovered that in most fields — especially those that are complex and unpredictable — generalists, not specialists, are primed to excel.
Range makes a compelling case for actively cultivating inefficiency. Failing a test is the best way to learn. Frequent quitters end up with the most fulfilling careers. The most impactful inventors cross domains rather than deepening their knowledge in a single area. 
As experts silo themselves further while computers master more of the skills once reserved for highly focused humans, people who embrace diverse experiences and perspectives will increasingly thrive.