# The grader is broken: how AI moderation systems are punished for following the rules - slug: the-grader-is-broken-how-ai-moderation-systems-are-punished-for-following-the-rules - date: 2026-04-24 - category: Artificial Intelligence Reddit researchers tested 193,000 moderation decisions and found 80% of what accuracy metrics call AI errors are actually valid policy calls. The metric is measuring the wrong thing. ---