" Give it 30 minutes, at least: Another favorite move of the busy manager is to schedule a one-on-one for 15 minutes or less. It’s the best I can do, Rands. I’ve got 15 people working for me. First, those 15 people don’t work for you; you work for them. "

― Michael Lopp , Managing Humans: Biting and Humorous Tales of a Software Engineering Manager