Includes bibliographical references and index.

Nothing is more inspiring than a big vision that becomes a triumphant, new reality. Think of how Apple's iPod went from a project with a single employee to an enormously successful product launch in eleven months. But they are the exception. Consider how London's Crossrail project delivered five years late and billions over budget. More modest endeavours, whether launching a small business, organizing a conference, or just finishing a work project on time, also commonly fail. Why? Understanding what distinguishes the triumphs from the failures has been the life's work of Oxford professor Bent Flyvbjerg.