" Project managers don’t write code, they don’t test the use cases, and they’re not designing the interface. You know what a good project manager does? They are chaos-destroying machines, and each new person you bring onto your team, each dependency you create, adds hard-to-measure entropy to your team. A good project manager thrives on measuring, controlling, and crushing entropy. You did this easily when you were a team of five, but if you’re going to succeed at 105, what was done organically now needs to be done mechanically. "

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