A leading business expert shows why expertise really matters, and how leaders who deeply understand the nuts and bolts of their industry and organization-- from businesses, to hospitals, to universities, to sports-- make all the difference for its success and the happiness of people who work there. By debunking the cult of managerialism), Goodall reshapes our understanding of bosses and the traits necessary for organizational success. She identifies the key characteristics of expert leaders and provides a real and grossly underappreciated model for career success. Credible demonstrates categorically that expertise matters more than ever and that we need our leaders to be experts with a deep, understanding of their organizations from many years spent learning the business and working their way up the ladder.