Named authorship is a direct input to how content quality is assessed, and its absence is a shared trait of content farms and scraped sites. Anonymous content is not disqualified - it is just unverifiable.
Impact is importance multiplied by the confidence tier’s weight — SPECIFICATION 1.0, RESEARCH 0.7, EMERGING 0.3, EXPERIMENTAL 0.1. Two rules backed by the same class of evidence therefore always carry the same weight, which is what makes the score reproducible rather than hand-tuned.