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    "story_id": "mp-2026-10-24-011",
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    "headline": "The Video Critic Says When Physics Breaks",
    "slug": "the-video-critic-says-when-physics-breaks",
    "dek": "PhysTrace compares history-conditioned expectations with observed windows, localizing physical inconsistencies in time without task-specific probes.",
    "summary": "PhysTrace compares history-conditioned expectations with observed windows, localizing physical inconsistencies in time without task-specific probes.",
    "body_text": "Video models used as world models need more than a global plausible-or-impossible score. PhysTrace asks a multimodal model to form history-conditioned physical expectations, aligns them with later video windows and marks where observations conflict. The authors add violation intervals to an existing benchmark and report hit rates up to 70.7 percent across physical principles, plus stronger overall possible-versus-impossible discrimination than the compared methods. Applied to reconstructed model trajectories, it exposes attribute- and noise-dependent violation patterns. This is an interpretability evaluation, not proof that the model understands physics.",
    "why_it_matters": "PhysTrace compares history-conditioned expectations with observed windows, localizing physical inconsistencies in time without task-specific probes.",
    "limitations": [
      "This is an interpretability evaluation, not proof that the model understands physics."
    ],
    "importance": 8,
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    "first_published_at": "2026-10-24T09:00:00.000-04:00",
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        "text": "PhysTrace compares history-conditioned expectations with observed windows, localizing physical inconsistencies in time without task-specific probes.",
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        "qualification": "This is an interpretability evaluation, not proof that the model understands physics."
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    "tags": [
      "video models",
      "world models",
      "evaluation"
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  "sources": [
    {
      "source_id": "source-2026-10-24-011",
      "title": "arXiv preprint 2610.31429, original v1",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2610.31429v1",
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      "published_at": "2026-10-22T11:27:58.000-04:00",
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    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
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    "title": "The Video Critic Says When Physics Breaks",
    "publisher": "The Machine Press",
    "published_at": "2026-10-24T09:00:00.000-04:00",
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