GGB Because authority is shown, not claimed. An operator who can read their own numbers is a better client and a better-run business, whether or not they ever hire us. The method is not the scarce thing — the discipline to apply it weekly, and the experience to act on what it shows, is. We would rather you trust us because the thinking is sound than because we kept it hidden.
From How We Measure a Restaurant: The Four Numbers That Decide Profit — the full reading, with the method behind this answer.