What problem does it solve? Stakeholders often share dashboards, notebooks, and reports whose numbers, methods, or charts cannot support the decisions they drive. This Skill audits an existing analysis end to end, tracing claims through data, calculations, and visuals before anyone relies on them. ## Core Features & Use Cases - Claim Verification: Recompute headline metrics from raw numerators and denominators, and check filters, joins, aggregation grain, and denominators for silent errors. - Method and Causal Review: Challenge causal language, selection bias, survivorship bias, partial-period comparisons, and denominator drift using a risk-weighted review playbook. - Visual Integrity Checks: Inspect final rendered charts for misleading axes, scales, labels, and titles that overstate the evidence. - Use Case: Before circulating a quarterly retention dashboard to executives, ask for a validation review to receive a report classifying findings as blockers, caveats, or improvements, with an overall rating of ready to share, share with caveats, or needs revision. ## Quick Start Review this analysis and tell me whether its conclusions are supported well enough to share with stakeholders.