Split one artifact across independent lenses and return where they converge and where they don't. Goal The result is a picture of where the lenses agree, where they disagree, and the smallest question that would resolve the disagreement. Not a checklist, and never an average — averaging the lenses is the failure this skill exists to prevent. Workflow 1. Read the artifact end to end before choosing the lenses. 2. Choose one lens per genuinely distinct failure mode — correctness, security, readability, cost, adversarial-user, and the like. Two candidate lenses that share a failure mode are one…