What the brief gives you
Positioning
A plain-language promise that says who the product is for and why it should exist.
First version
A useful boundary around the first release, with the screens and workflow that matter most.
Launch actions
Search phrases, landing-page sections, screenshots and small distribution experiments to run next.
Built for the moment before the build
Most ideas do not need another blank canvas. They need a decision: what is the smallest product someone could understand, want and try? Palm keeps that decision close to the Mac and makes the output concrete enough to share with a designer, developer or early user.
It does not replace customer conversations or a working prototype. It gives those conversations a sharper starting point.