{
  "nature": "fictional-teaching-exercise",
  "period": "2026-10-01/2026-10-04",
  "timezone": "Asia/Shanghai",
  "source_file": "process-log.csv",
  "source_sha256": "df8b6b9afcf5a6a02dee02648ae61d486b7e6eeb10e1a85d8dff5baa74c6845b",
  "requests": 12,
  "definitions": {
    "active": "Staff-minutes; five effort categories, including rework once.",
    "waiting": "Request-minutes between queue entry and review start; not staff effort.",
    "lead_time": "Elapsed minutes from request receipt to handoff notification.",
    "assumption": "Within each request: sequential work, one person at a time, one queue interval, no other waits.",
    "scope": "Completed routine requests only. No incomplete, complex, or overnight requests. Not a representative sample.",
    "rework": "Complete missing fields and check again after initial review; no additional wait in this exercise."
  },
  "totals": {
    "active_staff_minutes": 216,
    "copy_minutes": 36,
    "entry_minutes": 60,
    "handoff_minutes": 24,
    "lead_time_minutes": 720,
    "requests_with_rework": 6,
    "review_minutes": 72,
    "rework_minutes": 24,
    "wait_minutes": 504
  },
  "means": {
    "active_staff_minutes": 18.0,
    "copy_minutes": 3.0,
    "entry_minutes": 5.0,
    "handoff_minutes": 2.0,
    "lead_time_minutes": 60.0,
    "review_minutes": 6.0,
    "rework_minutes": 2.0,
    "wait_minutes": 42.0
  },
  "waiting_share_of_lead_time": 0.7,
  "copy_removal_scenario": {
    "status": "conditional-estimate-not-measured",
    "assumption": "Remove copying for all requests with zero added effort; waiting and other work unchanged.",
    "avoided_staff_minutes": 36,
    "avoided_staff_hours": 0.6,
    "remaining_active_staff_minutes": 180,
    "mean_active_staff_minutes": 15.0,
    "share_of_baseline_active_effort": 0.16666666666666666,
    "measured_post_change_result": null
  }
}