{
  "slug": "BROLL_03_Terra_Incognita",
  "version": "v2",
  "series": "BROLL_OF_CIVILIZATION",
  "kicker": "B-ROLL OF CIVILIZATION 03 \u00b7 SCION 071 + 073 + 113",
  "title": "TERRA INCOGNITA",
  "subtitle": "Material territories \u2014 scratches, light leaks, and the carrier as evidence",
  "scion_id": 71,
  "supporting_scions": [
    73,
    113
  ],
  "lineage": "Primary: SCION 071 (Standard Gauge) \u00b7 Supporting: SCION 073 (A Walk Through H), SCION 113 (Learning to See)",
  "theorem": "Build a passage from three recorded film surfaces with different visible defects. Establish a recognizable image before following a scratch or light boundary into the next fragment. Hold one surface to reveal the material carrier, return to a scene, and end on a blank interval with optical noise.",
  "boundary_note": "The authored optical carrier bridge is explicitly marked as a separate layer and does not claim a historical relationship between unrelated fragments.",
  "critic_tribunal": {
    "film_id": "BROLL_03_Terra_Incognita",
    "scion_id": 71,
    "critic_role": "Independent material-evidence critic",
    "v1_verdict": "repair_required",
    "v1_defect_timecodes": [
      "Seg #05 (t=20.50s-28.50s): `c04eb5e1` shows a Geiger counter rather than damaged film carrier.",
      "Seg #06 (t=28.50s-34.50s): `d69a0d4b` shows an out-of-focus rotating dark shape rather than a recognizable world scene surfacing through grain."
    ],
    "largest_gap": "Seg #05 and Seg #06 failed to show the material carrier defect and recognizable world scene surfacing through damaged emulsion.",
    "causal_hypothesis": "Unverified clip selection on `c04eb5e1` and `d69a0d4b`.",
    "falsifiable_repair": "Replace Seg #05 with Cineosis human-verified damaged/bleached emulsion strip `497f7a8c` (`0.3s-6.2s`, `OBS: Very bright, washed-out figures move across a bleached frame`) and replace Seg #06 with human-verified grainy archival street scene `4d02a782` (`0.3s-6.3s`, `OBS: Grainy damaged footage shows vehicles and figures in an urban setting`).",
    "strength_to_preserve": "The opening vertical scratch in `e0a5fa07`, the authored Carrier Bridge sprocket wipe (Seg #03), the wildfire flare in `b45f3dbf`, and the blank leader optical-track close in `8b5d40ae`.",
    "v2_verdict": "pass"
  },
  "duration_seconds": 39.5,
  "video_file": "films/BROLL_03_Terra_Incognita.mp4",
  "source_count": 5,
  "sources_summary": [
    "e0a5fa07 \u00b7 Dolores Project archaeology (1979)",
    "b45f3dbf \u00b7 Watershed wildfire (1958)",
    "497f7a8c \u00b7 Mirror of America (1963)",
    "4d02a782 \u00b7 Mirror of America (1963)",
    "8b5d40ae \u00b7 Laboratory Design for Microbiological Safety (1966)"
  ],
  "edl": [
    {
      "seg_idx": 1,
      "type": "title_card",
      "title": "TERRA INCOGNITA",
      "phase": "OPENING SLATE",
      "action": "Material territories \u2014 scratches, light leaks, and the carrier as evidence",
      "start_sec": 0.0,
      "end_sec": 3.0,
      "dur_s": 3.0
    },
    {
      "type": "shot",
      "clip_id": "e0a5fa07-ca06-551d-b316-1626f3fccf92",
      "source_title": "Dolores Project archaeology",
      "source_year": 1979,
      "source_page": "https://www.movingimagearchive.com/sources/dolores-project-archaeology-ebeec4b0?clip=e0a5fa07-ca06-551d-b316-1626f3fccf92",
      "in_s": 0.49,
      "out_s": 5.69,
      "dur_s": 5.2,
      "phase": "SURFACE 01 \u00b7 RECOGNIZABLE IMAGE & VERTICAL SCRATCH",
      "action": "Dolores Project Archaeology (1979): Recognizable face and landscape scored by vertical emulsion lines",
      "nearmatch": "OBSERVED DEFECT: EMULSION SCRATCH",
      "seg_idx": 2,
      "start_sec": 3.0,
      "end_sec": 8.2
    },
    {
      "type": "carrier_bridge_shot",
      "clip_a": {
        "id": "e0a5fa07-ca06-551d-b316-1626f3fccf92",
        "title": "Dolores Project archaeology",
        "year": 1979
      },
      "clip_b": {
        "id": "b45f3dbf-0ee8-50cb-846e-c284e5f27f76",
        "title": "Watershed wildfire",
        "year": 1958
      },
      "dur_s": 4.5,
      "phase": "B-ROLL 03 \u00b7 AUTHORED OPTICAL CARRIER BRIDGE",
      "action": "Authored optical splice/sprocket wipe following the vertical scratch boundary into the next reel",
      "nearmatch": "SCION 071 + 113 \u00b7 INSPECTABLE LAYER",
      "seg_idx": 3,
      "start_sec": 8.2,
      "end_sec": 12.7
    },
    {
      "type": "shot",
      "clip_id": "b45f3dbf-0ee8-50cb-846e-c284e5f27f76",
      "source_title": "Watershed wildfire",
      "source_year": 1958,
      "source_page": "https://www.movingimagearchive.com/sources/watershed-wildfire-03feb5e2?clip=b45f3dbf-0ee8-50cb-846e-c284e5f27f76",
      "in_s": 0.13,
      "out_s": 6.01,
      "dur_s": 6.0,
      "phase": "SURFACE 02 \u00b7 LIGHT LEAK & THERMAL DECAY",
      "action": "Watershed Wildfire (1958): Flare and emulsion mottling where smoke and celluloid grain merge",
      "nearmatch": "OBSERVED DEFECT: FLARE & GRAIN",
      "seg_idx": 4,
      "start_sec": 12.7,
      "end_sec": 18.7
    },
    {
      "type": "shot",
      "clip_id": "497f7a8c-b3f6-50c3-bae0-ee81a2cf6824",
      "source_title": "Mirror of America",
      "source_year": 1963,
      "source_page": "https://www.movingimagearchive.com/sources/mirror-of-america-5376a739?clip=497f7a8c-b3f6-50c3-bae0-ee81a2cf6824",
      "in_s": 0.33,
      "out_s": 6.13,
      "dur_s": 5.8,
      "phase": "SURFACE 03 \u00b7 THE CARRIER REVEALED (BLEACHED EMULSION)",
      "action": "A Day in History (1945): Overexposed, bleached nitrate/acetate emulsion where figures dissolve into the strip",
      "nearmatch": "MATERIAL CARRIER AS SUBJECT",
      "seg_idx": 5,
      "start_sec": 18.7,
      "end_sec": 24.5
    },
    {
      "type": "shot",
      "clip_id": "4d02a782-303d-5ee2-acc8-0a85719315cc",
      "source_title": "Mirror of America",
      "source_year": 1963,
      "source_page": "https://www.movingimagearchive.com/sources/mirror-of-america-5376a739?clip=4d02a782-303d-5ee2-acc8-0a85719315cc",
      "in_s": 0.33,
      "out_s": 6.33,
      "dur_s": 6.0,
      "phase": "SCENE RETURN \u00b7 WORLD SURFACING THROUGH DAMAGED CELLULOID",
      "action": "All the King's Horses (1935): Recognizable urban street and vehicles surfacing through heavy archival grain and wear",
      "nearmatch": "RECORDED WORLD SURFACES",
      "seg_idx": 6,
      "start_sec": 24.5,
      "end_sec": 30.5
    },
    {
      "type": "shot",
      "clip_id": "8b5d40ae-e78d-59a3-984f-ed065c21cc7f",
      "source_title": "Laboratory Design for Microbiological Safety",
      "source_year": 1966,
      "source_page": "https://www.movingimagearchive.com/sources/laboratory-design-for-microbiological-safety?clip=8b5d40ae-e78d-59a3-984f-ed065c21cc7f",
      "in_s": 0.5,
      "out_s": 6.0,
      "dur_s": 5.5,
      "phase": "CLOSING INTERVAL \u00b7 LEADER & OPTICAL TRACK NOISE",
      "action": "Laboratory Design for Microbiological Safety (1966): Blank leader interval held with 16mm optical carrier noise",
      "nearmatch": "BLANK INTERVAL + CARRIER SOUND",
      "seg_idx": 7,
      "start_sec": 30.5,
      "end_sec": 36.0
    },
    {
      "seg_idx": 8,
      "type": "closing_ledger",
      "title": "SOURCE ATTRIBUTION & BOUNDARY NOTE",
      "phase": "CLOSING LEDGER",
      "action": "The authored optical carrier bridge is explicitly marked as a separate layer and does not claim a historical relationship between unrelated fragments.",
      "start_sec": 36.0,
      "end_sec": 39.5,
      "dur_s": 3.5
    }
  ]
}