‘Important, timely, instructive and entertaining’ – Daniel Kahneman, bestselling author of Thinking, Fast and Slow'Wise, vivid and unforgettable' – Tim Harford, bestselling author of The Undercover EconomistWorld expert Bent Flyvbjerg and bestselling author Dan Gardner reveal the secrets to successfully planning and delivering ambitious projects on any scale.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 such successes 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