key sources Shipped
What this lens looks for
Identify the strongest available sources for the topic — judged by what its domain treats as authoritative: peer-reviewed studies and systematic reviews for medical or scientific topics, official documentation and standards for technical ones, primary statutes and case law for legal ones, filings and government data for financial ones, independent testing and broad consensus for consumer ones. State what each contributes as a verifiable, cited claim with an exact supporting quote.
What its verifier checks
Each source claim names the source, what it contributes, and why it is credible for the domain; the strongest available class of source is used (reject a weak source where a stronger one exists); provenance fields are filled; no source is listed without a stated contribution.