What business leaders have learned, very painfully, is that individuals cannot be reduced to numbers. Even Peter Drucker, the champion of well-measured goals, understood the limits of calibration. A manager’s “first role,” Drucker said, “is the personal one. It’s the relationship with people, the development of mutual confidence . . . the creation of a community.” Or as Albert Einstein observed, “Not everything that can be counted counts, and not everything that counts can be counted.”
