╭───────────────────────────────────────╮
       ╱   1,000 traces     71 error rows        ╲
      │   Aggregates hide  →  clusters surface   │
      │   Incidents become ranked experiments    │
      ╰───────────────────────────────────────────╯
           Reliability is structure, not vibes.

Braintrust Trace Unsurfacing: Finding What Normal Aggregates Hide

This paper documents a CREATE SOMETHING Braintrust trace audit and explains why aggregate uptime metrics were insufficient to diagnose practical reliability risk. It converts concentrated failure clusters into ranked experiments with explicit acceptance criteria and dashboard contracts.