Jack Stack’s revolutionary system of Open-Book Management suggested that every employee in a business should be able to understand the company’s key figures, act on them, and should have a real stake in the business. As Stack, himself said: “When employees think, act and feel like owners … everybody wins.” As a management strategy, ‘the great game of business’ is so simple and effective that it has been adopted by companies as diverse (and successful) as Intel and Harley Davidson.