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    "story_id": "mp-2026-10-03-010",
    "source_story_id": "tmp-story-robot-partner-constraints",
    "edition_id": "mp-2026-10-03-morning-0086",
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    "section": "robotics",
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    "headline": "The Helper Watched Both Robots to Find One Fault",
    "slug": "the-helper-watched-both-robots-to-find-one-fault",
    "dek": "Joint behavior revealed a partner constraint that the constrained robot alone could hide.",
    "summary": "Joint behavior revealed a partner constraint that the constrained robot alone could hide.",
    "body_text": "In coupled manipulation, a healthy robot may compensate for a partner's actuator limits, making the faulty machine look capable when observed alone. Watch, Infer, Coordinate scores candidate constraints from both robots' joint behavior, then uses the inferred limitation on a new task. Across three benchmark settings, the method improved zero-shot coordination and approached an oracle with the true constraints, according to the authors; the result is limited to the simulated and experimental settings described in the preprint.",
    "why_it_matters": "Joint behavior revealed a partner constraint that the constrained robot alone could hide.",
    "limitations": [
      "Across three benchmark settings, the method improved zero-shot coordination and approached an oracle with the true constraints, according to the authors; the result is limited to the simulated and experimental settings described in the preprint."
    ],
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    "first_published_at": "2026-10-03T09:00:00.000-04:00",
    "modified_at": "2026-10-03T09:00:00.000-04:00",
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        "text": "Joint behavior revealed a partner constraint that the constrained robot alone could hide.",
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        "qualification": "Across three benchmark settings, the method improved zero-shot coordination and approached an oracle with the true constraints, according to the authors; the result is limited to the simulated and experimental settings described in the preprint."
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    "source_ids": [
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    "tags": [
      "multi-robot coordination",
      "fault inference",
      "manipulation"
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    "image_url": null,
    "corrections": []
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  "sources": [
    {
      "source_id": "source-2026-10-03-010",
      "title": "arXiv preprint 2610.02170",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2610.02170",
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      "published_at": "2026-10-01T13:56:04.000-04:00",
      "accessed_at": "2026-10-03T08:31:37.000-04:00",
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    "name": "The Machine Press",
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    "title": "The Helper Watched Both Robots to Find One Fault",
    "publisher": "The Machine Press",
    "published_at": "2026-10-03T09:00:00.000-04:00",
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