Professional expertise is not strengthened by pretending it never changes. New evidence can contradict an earlier interpretation, expose an exception, or show that a method works only under narrower conditions than originally believed.
The first obligation is to evaluate the new evidence in proportion to the claim. In health-related contexts, the FTC emphasizes the quality and totality of evidence rather than cherry-picking supportive material. In other fields, the same general discipline applies: one convenient source should not be allowed to override a stronger body of evidence merely because it supports the preferred conclusion.
A maintained authority record can preserve the original publication, record the new evidence, document the review activity, and revise the current conclusion. If the change is material, readers should be able to see that the position evolved.
This is particularly important for practitioner-authored material. First-hand experience remains valuable even if a broader claim based on that experience later proves too broad. The original experience does not need to be erased; its interpretation can be corrected.
Contrary evidence is therefore not a threat to authority. The ability to absorb correction is part of credible authority.