{
  "title": "Metal fitting data for AI branch and orientation evidence",
  "source_page": "https://fiund.com/industries/metal-fitting-branch-orientation-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "A branch location relative to the reference flat",
    "context": "An original paper fitting has a square mark and three labeled openings. The exercise evaluates object geometry only.",
    "records": [
      [
        "1",
        "Drawing",
        "With square up and A toward viewer, branch C points right."
      ],
      [
        "2",
        "Bench photo",
        "Square up and A toward viewer; tag C on left."
      ],
      [
        "3",
        "Rear photo",
        "C appears right from the other end; A faces away."
      ]
    ],
    "question": "Which view should determine the comparison and why?",
    "answer": "Use record 2 because it satisfies both orientation constraints in record 1. It shows C on the opposite side. Record 3 looks rightward but uses the rear perspective, so its screen position cannot be used to erase the reference-view discrepancy.",
    "failureModes": [
      "Comparing left and right across opposite views",
      "Ignoring the named opening that faces the camera"
    ],
    "fields": [
      [
        "reference_flat",
        "Anchors roll orientation"
      ],
      [
        "viewed_end",
        "Distinguishes front from rear"
      ],
      [
        "branch_direction",
        "Stores part-relative rather than pixel direction"
      ]
    ],
    "holdout": "Use a view where square is up but A is unidentifiable; withhold a handedness conclusion.",
    "boundary": "No pressure or service guidance, actual branch specifications, connections or installation."
  }
}