A good introduction to Dr. Deming's philosophy of management: Four Days with Dr. Deming summarizes the four day seminars Deming used to give to business leaders. Key insight: you can't improve your team's performance just by picking some numeric measurement and then rewarding or punishing people to optimize it. Problem one: the variability in the measurement may be caused by a broken system that only management can change, not by individual performance. Problem two: people may optimize locally to improve that one measurement, even at the cost of hurting the performance of the company as a whole. If you're in a rut constantly trying to figure out how to rejigger your employees' incentive systems, this book will get you out of it.