How do walnut kernels for candy get whole? How did Ford reduce conveyor downtime? And another 140 examples and 250 illustrations. Believe it or not, the wittiest ideas of the greatest inventors - from Leonardo da Vinci to Steve Jobs - are based on simple tricks. In the book - the most powerful of them: analogy - let's do it like; inversion - let's do the opposite; empathy - imagine ourselves in place; fantasy - let's become wizards! And then...