“You have 18 new messages.” Norman Spencer looked at his watch, shook his head, and let out a sharp sigh. Was it possible that he had received 18 voice mail messages in the time he had spent at lunch and the gym? He’d only been gone for two hours. He dropped into his desk chair and unhappily poked at the number 1 key to let the messages play.

A version of this article appeared in the March–April 2000 issue of Harvard Business Review.