Our AdPM approach is a little different. We don't just start work the moment the project sponsor or client mentions some vague mission statement mush. That would be foolish, yet project managers do it all the time. A little story may help.
Imagine that you work at the drive-thru window of a fast food joint. A customer drives up and says, "I'm hungry."
Would you launch into a frenzy of hamburger flipping and taco rolling? Most assuredly not, you'd ask some questions because the answers to them would substantially improve your chances of satisfying the customer. Our AdPMT approach has the same focus. We spend a lot of time asking questions, structuring the project, detailing accountabilities and making clear the achievements (measured achievements) that we expect from everyone.