Never heard the analogy of PMs to APIs, but that's the kind of thing that immediately gets stuck in your brain. Nicely put.
Of course, I can't find the book online now. I thought it was a Microsoft Press book by Steve McConnell or Steve Maguire.
http://www.amazon.com/Debugging-Development-Process-Practica...
edit: Or maybe it was Steve McConnell's you recommend?:
Software Project Survival Guide (Microsoft, 1997)
http://www.amazon.com/Software-Project-Survival-Developer-Pr...