Diagnosis and repair asymmetry

Evidence accumulates on what a system was caught doing and does not transfer to the fix proposed for it, because an observation describes a state that occurred while a repair makes a claim about every state that has not. A report that grades its findings and its recommendation on one scale invites the reader to spend the credibility of the first on the second; grading them separately, in the same table, is the instrument reporting the size of its own error.