{
  "title": "Button and small-fastener data for AI hole-pattern checks",
  "source_page": "https://fiund.com/industries/button-fastener-hole-pattern-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "Two mounting styles share a face outline",
    "context": "Original paper button shapes include a rear-view sketch. A fictional order names a mounting style.",
    "records": [
      [
        "1",
        "Order",
        "Face shape round; mounting style shank."
      ],
      [
        "2",
        "Front photo",
        "Round face, no visible through holes."
      ],
      [
        "3",
        "Rear photo",
        "A protruding loop is visible on the same mock button."
      ]
    ],
    "question": "What evidence supports the mounting style?",
    "answer": "Record 3 directly shows the rear loop, supporting the fictional shank style requested in record 1. Record 2 supports round face but cannot establish the mount by itself. Store front appearance and rear attachment evidence as separate observations for one item.",
    "failureModes": [
      "Inferring the mount from a round face",
      "Using absence of front holes alone as proof of a rear loop"
    ],
    "fields": [
      [
        "face_shape",
        "Checks the visible style"
      ],
      [
        "rear_attachment",
        "Identifies the mount"
      ],
      [
        "view_pair_id",
        "Ensures the two faces belong to one button"
      ]
    ],
    "holdout": "Use front and rear photos of different items with identical faces; require stable specimen linkage.",
    "boundary": "No commercial button designs, customer specifications, attachment instructions or durability claims."
  }
}