{
  "status": "Published Field Note measurements",
  "period": "20 complete days in October 2026; consecutive 10-day windows; dates withheld for privacy",
  "metrics": [
    {
      "unit": "Original revisions",
      "earlier": 1386,
      "later": 1424,
      "percent_change": 2.7417
    },
    {
      "unit": "Integrated changes",
      "earlier": 310,
      "later": 412,
      "percent_change": 32.9032
    },
    {
      "unit": "First-production changes",
      "earlier": 245,
      "later": 315,
      "percent_change": 28.5714
    },
    {
      "unit": "Deployment events",
      "earlier": 19,
      "later": 12,
      "percent_change": -36.8421
    }
  ],
  "later_first_production_cohort": {
    "total": 315,
    "integrated_before_window": 121,
    "integrated_during_window": 194
  },
  "definitions": {
    "Original revisions": "Non-merge commits, including code and documentation, deduplicated within the audited histories.",
    "Integrated changes": "Merged work pull requests, excluding release-promotion wrappers.",
    "First-production changes": "Work pull requests traced to their first inclusion in a successful production deployment.",
    "Deployment events": "Successful deployment runs corroborated by production evidence."
  },
  "limits": [
    "Different units, not equal-value outcomes",
    "Task size, allocation and calendar mix uncontrolled",
    "First production inclusion does not prove feature activation or user acceptance",
    "Human effort and full machine use not measured",
    "No causal productivity or improved final-quality estimate"
  ]
}