The entire shape up philosophy from Basecamp is honestly the best project management style I’ve been a part of in software engineering. The inversion of thinking around time (how long do I want to take vs. How long will this take?) is the most critical aspect of it.
Yup, that is so obvious in hindsight but I hadn't thought of it that way before. "We're willing to spend this much time, will you be able to do it?" is a much easier question both to ask and answer than "how much time will it take?"
It also encourages collaboration over adversarial negotiation.
