The idea that messages work at different depths is not new, and we did not invent it. It comes from John Rossiter and Larry Percy, whose advertising grid has been the standard academic model since the late 1980s and is taught in nearly every advertising program. Their work draws the line between informational appeals, which give the buyer facts, results and an offer, and transformational appeals, which change how the buyer experiences the product or their own situation. In our language those are transactional and transformational. Their grid also showed that the right depth depends on how involved the buyer is in the decision, which is why the same message can land with one person and miss with the next.
Here is the part that turned a model into a method. When researchers later tested the grid, they found that the depth the textbook predicted did not always win. Sometimes a message pitched at an unexpected depth did better, because it made the buyer stop and reconsider. Nobody could reliably predict which depth would win ahead of time. So the only honest way to find out is to run them and watch. That is what the Belief Ladder does.
Aspirational is our extension of their grid one step further. Where transformational changes how a buyer feels about their situation, aspirational changes how they see themselves. Same axis, one rung deeper, and in our experience it is the rung that reaches the people who sign.