{
  "title": "Paperboard container data for AI liner and seam evidence",
  "source_page": "https://fiund.com/industries/fiber-drum-liner-seam-map-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "One seam in the shell, another in the liner",
    "context": "A tabletop paper drum model separates its shell seam from a removable liner seam. No containment test occurs.",
    "records": [
      [
        "D1",
        "Component map",
        "Outer shell S1 has seam at clock position 3; liner L1 intended seam at position 9."
      ],
      [
        "D2",
        "Image legend",
        "Clock positions measured from a red mark fixed to the shell."
      ],
      [
        "D3",
        "Interior photo",
        "Liner seam at position 3; red shell mark visible."
      ],
      [
        "D4",
        "Outside photo",
        "Shell seam also appears at position 3."
      ]
    ],
    "question": "What placement difference does the evidence show?",
    "answer": "The shell seam is where D1 expects it, based on D4. The liner seam appears at 3 instead of the intended 9, based on D2 and D3. These are distinct layers even though their observed seam positions coincide. The photos provide no containment evidence.",
    "failureModes": [
      "Reporting a single seam for both parts",
      "Using camera angle to invent a second clock reference"
    ],
    "fields": [
      [
        "component_layer",
        "Separates shell and liner features"
      ],
      [
        "clock_reference",
        "Anchors seam position to the shell marker"
      ],
      [
        "observed_position",
        "Allows layer-specific comparison with the map"
      ]
    ],
    "holdout": "Rotate the shell between views but retain its red marker; score reference-relative alignment.",
    "boundary": "No dangerous goods, packaging certifications, leak claims or actual drum construction instructions."
  }
}