The Four-Hour Lie
The operating problem
Lab assays describe a composite sampling window and arrive later. Joining them as point-in-time readings creates misleading recovery labels.
The practitioner approach
Historian-to-warehouse ingestion with assay alignment, plant-stop validity handling, sensor health checks and soft-assay models.
Why it matters
Recovery visibility depends on the data’s timing and physical meaning, as well as the pipeline.
Relevant starting point
Recovery Readiness or Model Validity Audit.