A worker that produces an artifact is not automatically the right authority to declare it correct.
VAJRA makes independent verification a structural boundary. VGU Signal applies the same idea to information: acquisition and extraction do not make a claim authoritative; verification and provenance must establish that status.
The general pattern is: produce a result, preserve the evidence, evaluate it through an independent boundary, and record the decision.
The separation matters most when the producer can be wrong, incomplete, compromised or optimized for the wrong objective.