A passed test never proves a model true. It shows that the model survived one honest attempt to falsify it, under stated conditions.
Every stage is recorded, sealed with a content hash, and checked again by a verifier that recomputes the result rather than trusting stored values.
| Verdict | Meaning |
|---|---|
| Pass | The measurement agrees with the frozen prediction within the frozen threshold; calibrations valid; conditions inside the envelope. |
| Fail | A valid measurement disagrees beyond the threshold. Decisive, and preserved as a result. |
| Inconclusive | The data cannot support a verdict: expired calibration, out-of-envelope conditions, clipping, gaps, drift or a refused extraction. Reasons are recorded. |