{
  "title": "Metal finishing data for AI surface-measurement context",
  "source_page": "https://fiund.com/industries/metal-finish-surface-measurement-context-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "Compare before and after at the same mapped site",
    "context": "Inert sample photos show a map with central and edge zones. Mock numbers illustrate spatial comparability.",
    "records": [
      [
        "1",
        "Before table",
        "Coupon Q6 center 12, edge 16, same metric."
      ],
      [
        "2",
        "After table",
        "Q6 center 9; edge blank."
      ],
      [
        "3",
        "Summary draft",
        "Edge improved from 16 to 9."
      ]
    ],
    "question": "Which change can the reviewer substantiate?",
    "answer": "Only the center has a before-and-after comparison: 12 to 9 from records 1 and 2, a decrease of 3 units. Record 3 combines the before edge with the after center. The after-edge value remains missing, and no acceptance threshold is supplied.",
    "failureModes": [
      "Combining measurements from distinct surface zones",
      "Interpreting a decrease as a passing finish"
    ],
    "fields": [
      [
        "surface_zone",
        "Matches spatially equivalent observations"
      ],
      [
        "process_stage",
        "Distinguishes before and after"
      ],
      [
        "metric_definition",
        "Keeps the same measurement quantity"
      ]
    ],
    "holdout": "Supply two matching zones measured under different instrument profiles; require matched method before comparing.",
    "boundary": "No real finish recipes, measurement procedures, client tolerances or quality decisions."
  }
}