{
  "title": "Book printing data for AI signature and gathering checks",
  "source_page": "https://fiund.com/industries/book-signature-gathering-sequence-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "A missing gathering signature behind a correct count",
    "context": "An owned eight-page sample booklet uses four fictional paper gathering signatures. The packet is reviewed before binding.",
    "records": [
      [
        "G1",
        "Gathering plan",
        "Ordered signatures A, B, C, D."
      ],
      [
        "G2",
        "Staging photo",
        "Visible identifiers from bottom to top: D, C, C, A."
      ],
      [
        "G3",
        "Photo legend",
        "Gathering order is read from top to bottom."
      ],
      [
        "G4",
        "Counter",
        "Four items recorded."
      ]
    ],
    "question": "Which correction should the reviewer flag?",
    "answer": "Read G2 using G3: A, C, C, D. Compared with G1, B is absent and C appears twice; slot two needs B. G4's item count is correct even with a missing distinct signature, so count and identity need separate checks.",
    "failureModes": [
      "Counting repeated signatures as complete coverage",
      "Reading the stack opposite to the supplied convention"
    ],
    "fields": [
      [
        "signature_id",
        "Detects missing and repeated units"
      ],
      [
        "gathering_index",
        "Records position in binding order"
      ],
      [
        "reading_convention",
        "Controls how photo order maps to assembly order"
      ]
    ],
    "holdout": "Provide all expected signatures but rotate one 180 degrees; score orientation independently of correct identity and order.",
    "boundary": "Only original text and paper diagrams; exclude publisher manuscripts and actual binding tolerances."
  }
}