If advice only works for the people it selects for, it will always blame the ones it breaks.

Most advice systems don’t collapse when they fail. They adapt by shifting responsibility downward. When a framework works for a narrow group, those outcomes are elevated into proof, while everyone else is quietly recategorized as undisciplined, dishonest, or defective. Over time, adherence replaces results as the measure of truth, and effort without improvement is treated as a moral failure rather than meaningful data. The people who followed the rules and still didn’t get better aren’t edge cases; they’re the missing evidence the system learned to ignore.