{
  "title": "Mineral wool data for AI thickness and packaging evidence",
  "source_page": "https://fiund.com/industries/mineral-wool-compression-thickness-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "Pack thickness differs from recovered thickness",
    "context": "A paper accordion represents a fictional insulation specimen. The measurement stages are explicitly labeled.",
    "records": [
      [
        "1",
        "Pack note",
        "Specimen M4 observed at 40 mm inside mock pack."
      ],
      [
        "2",
        "Later sheet",
        "M4 measured 58 mm at recorded recovery check."
      ],
      [
        "3",
        "Request",
        "Retrieve recovered thickness for M4; no recovery time specification provided."
      ]
    ],
    "question": "Which number goes in the recovered field?",
    "answer": "Use 58 mm from record 2 with the label that it was observed at the recorded recovery check. Record 1's 40 mm is an in-pack value. The difference does not establish complete recovery because record 3 supplies no completion or time criterion.",
    "failureModes": [
      "Using packaged dimensions as recovered dimensions",
      "Assuming the last observation is equilibrium"
    ],
    "fields": [
      [
        "measurement_stage",
        "Separates packed and recovered readings"
      ],
      [
        "elapsed_time_status",
        "Identifies missing timing context"
      ],
      [
        "specimen_key",
        "Connects stages for one sample"
      ]
    ],
    "holdout": "Add readings at two elapsed times with one on another specimen; require exact specimen and time matching.",
    "boundary": "No thermal ratings, building advice, actual material tests or customer dimensions."
  }
}