{
  "title": "Paper mill data for AI reel and measurement-basis review",
  "source_page": "https://fiund.com/industries/paper-reel-basis-weight-area-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "Put mass on a common area basis",
    "context": "The fictional lab weighs two paper pieces. The exercise checks arithmetic and lineage, with no quality claim.",
    "records": [
      [
        "R1",
        "Reel ticket",
        "Parent Q7, cross-web positions near edge and center sampled."
      ],
      [
        "R2",
        "Lab sheet",
        "Q7 edge: 8 g over 0.10 m². Q7 center: 15 g over 0.20 m²."
      ],
      [
        "R3",
        "Order stub",
        "Reporting basis g/m²; tolerance not supplied."
      ],
      [
        "R4",
        "Draft comparison",
        "Center heavier because it weighs 15 g."
      ]
    ],
    "question": "Which sample has greater mass per area?",
    "answer": "The edge sample has 80 g/m² (8 ÷ 0.10), versus 75 g/m² at center (15 ÷ 0.20). R2 gives unequal areas, so R4's raw mass comparison reverses the normalized order. R3 allows reporting basis weight but not judging conformance.",
    "failureModes": [
      "Comparing raw masses across unequal specimen areas",
      "Treating a measured difference as a failed tolerance"
    ],
    "fields": [
      [
        "sample_area_m2",
        "Supplies the normalization denominator"
      ],
      [
        "web_position",
        "Identifies where the coupon came from"
      ],
      [
        "basis_weight_g_m2",
        "Stores the comparable quantity"
      ]
    ],
    "holdout": "Mix cm² and m² in the lab sheet with explicit units; require conversion before normalization.",
    "boundary": "No real mill performance, acceptance guarantees, customer specifications or supplier prices."
  }
}