Blog
The three are not interchangeable and they fix different problems. A blunt guide to which instrument fits which stall — including the cases where the honest answer is that you need none of them.
The skill that got you hired as a PM is not the skill that keeps you booked. What actually changes when you go independent, how the first three clients arrive, and the honest case for not doing it.
The gap between PM and senior PM isn't output — it's evidence of judgement. The four artefacts a promotion committee is actually looking for, and how to build them in two quarters.