the grid
Every ad makes one argument to one kind of buyer. Most accounts only make a few.
The Funnel Messaging Matrix is a grid of messaging jobs. The rows are what a customer already knows; the columns are how the ad persuades. Every brief BrightCircle writes is one cell: a specific customer, a specific argument. Map an account onto the grid and you can see which arguments the budget keeps repeating and which customers have never heard a case at all.