Book excerpt: It is taken for granted in the knowledge economy that companies must employ the most talented performers to compete and succeed. Many firms try to buy stars by luring them away from competitors. But Boris Groysberg shows what an uncertain and disastrous practice this can be. Chasing Stars offers profound insights into the fundamental nature of outstanding performance. It also offers practical guidance to individuals on how to manage their careers strategically, and to companies on how to identify, develop, and keep talent. --Publisher's description.