The CRAAP test, a library-science source-evaluation framework, splits 'Authority' (the source) from 'Accuracy' (the content) along the same line as the reliability/credibility axis

The CRAAP test — Currency, Relevance, Authority, Accuracy, Purpose — is a source-evaluation mnemonic originated by Sarah Blakeslee at California State University, Chico, in 2004. Two of its five criteria split along the same line as the Admiralty Code's reliability/credibility axis. Authority is defined as "the source of the information" — questions about the author, publisher, sponsor, and their qualifications. Accuracy is defined separately, as "the reliability, truthfulness and correctness of the content" — whether evidence supports the claims and whether the work was reviewed. This is a fourth domain — taught to library patrons rather than intelligence analysts, clinicians, or RAG engineers (observation-intelligence-doctrine-and-rag-independently-derived-a-two-axis-source-model) — independently drawing the line between trusting a source and trusting its specific content.

Sourcing note: the who/when attribution is an uncontested historical claim and rests safely at Tier 3 per the vault's sourcing floor for definitional claims. The exact Authority/Accuracy wording is recorded as the libguide's paraphrase of Blakeslee, not confirmed against her original text.