{
  "protocol": {
    "protocol_version": "2.0.0-followup",
    "reason": "The first run exposed an active-sampling regression after unannounced geometry changes. Evaluate observation-triggered trust revocation on a disjoint scene split.",
    "frozen_before_followup_run": true,
    "scene_ids": [
      300,
      301,
      302,
      303,
      304,
      305,
      306,
      307
    ],
    "replicate_seeds": [
      4101,
      4102,
      4103
    ],
    "receiver_grid": [
      32,
      64
    ],
    "viewport": [
      16,
      20
    ],
    "emitter_grid_side": 6,
    "rays_per_receiver_per_frame": 2,
    "phases": {
      "cold": 4,
      "warm": 16,
      "revisit": 8,
      "relight": 8,
      "hidden_change": 8
    },
    "unseen_ticks_before_revisit": 500,
    "unseen_tick_semantics": "No observations of these receivers. This is a clock gap, not 500 fully rendered frames.",
    "methods": [
      "raw_importance",
      "screen_cv",
      "world_cv",
      "world_active_cv",
      "world_guarded_cv"
    ],
    "primary_comparison": "world_guarded_cv versus world_active_cv expected MSE in hidden_change phase",
    "reporting": "Include first surprise frame and all later frames. No oracle change flag. Observe conflict after correcting current output; revoke all trust for next output.",
    "scope": "Follow-up on independent scenes; same renderer family, neural weights, ray budget and material/light setup"
  },
  "elapsed_seconds": 10.221205891000864,
  "environment": {
    "python": "3.12.14",
    "numpy": "2.3.5",
    "device": "cpu"
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  "record_count": 5280,
  "total_physical_ray_calls": 3379200,
  "per_persistent_method_memory_bytes": 589824,
  "prior_preparation": [
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      "scene": 300,
      "prior_all_receivers_seconds": 0.042850185000133933,
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    {
      "scene": 301,
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    {
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      "scene": 303,
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      "scene": 304,
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    {
      "scene": 306,
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    {
      "scene": 307,
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    {
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      "relative_expected_mse_reduction": 0.07119183115085737,
      "scene_bootstrap_95": [
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    {
      "phase": "hidden_change",
      "contender": "world_guarded_cv",
      "baseline": "raw_importance",
      "relative_expected_mse_reduction": 0.5939268366696557,
      "scene_bootstrap_95": [
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    },
    {
      "phase": "hidden_change",
      "contender": "world_guarded_cv",
      "baseline": "screen_cv",
      "relative_expected_mse_reduction": -0.08528394154615726,
      "scene_bootstrap_95": [
        -0.23242464908365415,
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  ],
  "limitations": [
    "Only a direct-light floor/three-sphere scene family; no game engine or full path tracing.",
    "Ray counts match. Compute, bandwidth, and VRAM do not match; report is not an equal-frame-time comparison.",
    "Clock gap has no observations; it is not 500 fully rendered frames.",
    "CPU timings exclude shared feature/prior preparation and privileged reference enumeration; not full-renderer frame times.",
    "Hidden changes deliberately omit invalidation and use the stale prior; controls remain fallible.",
    "Negative linear-radiance estimates are retained for statistical metrics. Display clipping introduces bias.",
    "Small scene-cluster intervals characterize this generator only; no cross-game generalization claim."
  ]
}