{
  "title": "Commercial equipment wholesale tray and rail compatibility data for AI",
  "source_page": "https://fiund.com/industries/commercial-equipment-wholesale-rail-width-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "A tabletop tray can fit between two rails while only one has the specified option identity",
    "context": "An original tray and two lightweight inert rails use practice measurements. No live commercial equipment, vendor drawing, customer or actual fit recommendation is involved.",
    "records": [
      [
        "RW1",
        "Option card",
        "Mock tray T calls for documented rail option R1 and 50 practice mm clear width. Original specification references exact R1 label."
      ],
      [
        "RW2",
        "Rail A observation",
        "Readable R1 label, reviewed 50 mm span, tray fits in staged placement. All observations linked to A."
      ],
      [
        "RW3",
        "Rail B observation",
        "Reviewed 50 mm span and tray also fits, but B's option label missing. No documentary B-to-R1 association."
      ]
    ],
    "question": "Which rail matches the documented option, and what does B's observed fit establish without its label?",
    "answer": "RW1 and RW2 match A's R1 identity, measured width and observed mock fit. RW3 supports B's measured 50 mm span and observed placement, but without its label it cannot establish R1 identity or other unspecified option attributes. Score geometry, visible fit and catalog association independently rather than infer an exact product option from width alone. No actual equipment compatibility or safety recommendation follows.",
    "failureModes": [
      "Treating physical fit in a mockup as proof of an exact catalog variant.",
      "Filling missing label identity from a matching measurement."
    ],
    "fields": [
      [
        "Tray and required option",
        "Defines the target."
      ],
      [
        "Measured span and observed fit",
        "Captures physical evidence."
      ],
      [
        "Rail label and source identity",
        "Supports the documented match."
      ]
    ],
    "holdout": "Add a B label R2 with equal width. Require geometric agreement while documenting option mismatch.",
    "boundary": "Use original owned inert props and consenting adults. Exclude live equipment and vendor-only drawings."
  }
}