What every entrepreneur should know before hiring or firing. Alumni entrepreneurs stepped away from the heady world of running things to discuss that world and compare notes on hiring, firing, and promoting employees during an event at the Graduate School of Business. It was the Center for Entrepreneurial Studies’ second Alumni Entrepreneur Reunion, during which about two dozen participants headed for a small-group discussion with Irv Grousbeck, consulting professor, co-director of the Center for Entrepreneurial Studies, and exemplar to the mid-career alums gathered around the table to pick his brain. Grousbeck, who has taught at the School for over 20 years, co-founded Continental Cablevision Inc. in 1964 and is managing partner of...