QUOTE : When Steve Jobs was a kid, his neighbor showed him a rock tumbler—a can that spun on a motor. The neighbor asked Steve to gather up some ordinary rocks from the yard. He took the stones, threw them into the can, added some grit, turned on the motor, and, over the racket, asked Steve to come back two days later. When Steve returned to the noisy clatter of the garage, the neighbor turned off the contraption and Steve was astounded to see how the ordinary rocks had become beautiful polished stones. Steve would later say that when a team debated, both the ideas and the people came out more beautiful—results well worth all the friction and noise.5 Your job as a boss is to turn on that “rock tumbler.