Innovation is more urgently necessary than it's ever been. Now, three leading experts on commercializing innovation systematically sort through the wreckage of yesterday's strategies, learning lessons and identifying ideas worth preserving and adapting. To prepare this book, the authors thoroughly examined the record of more than 250 innovation programs from organizations of widely differing sizes and industries, from 1998 through 2003. Based on this unprecedented research, they reveal the right time to use each innovation 'arrow', how to account for contingencies and risks; and how to focus on core innovation challenges -- not just superficial symptoms. Along the way, the authors define a focused, integrated model for innovation: one that is more nuanced and complex, but also better-grounded, more durable, and far more effective.