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  "story": {
    "story_id": "mp-2026-10-15-012",
    "source_story_id": "tmp-story-pingpongduo-safe-coordination",
    "edition_id": "mp-2026-10-15-morning-0097",
    "edition_url": "https://themachinepress.com/edition/2026-10-15",
    "position": 12,
    "story_type": "dispatch",
    "section": "robotics",
    "editorial_classification": "editorial",
    "headline": "Two Humanoids Share a Table Without Crossing Paths",
    "slug": "two-humanoids-share-a-table-without-crossing-paths",
    "dek": "PingpongDuo chooses team positions jointly, filters risky movements and trains footwork and striking skills for rapid handoffs in a confined space.",
    "summary": "PingpongDuo chooses team positions jointly, filters risky movements and trains footwork and striking skills for rapid handoffs in a confined space.",
    "body_text": "Doubles table tennis forces two humanoids to alternate strikes while repeatedly entering and clearing the same workspace. PingpongDuo gives a team planner learned risk estimates and preserves the current striker's target when alternatives look unsafe. Separate footwork and racket skills are trained on one another's states, with a residual refining strikes after movement. In simulation, the authors report a 13.2 percent gain in return success and roughly two-centimeter clearance positioning error. In hardware tests, one robot completes a 2.15-meter recovery cycle in 2.4 seconds, and two robots sustain more than ten alternating strikes. These are controlled demonstrations, not general human-safe collaboration.",
    "why_it_matters": "PingpongDuo chooses team positions jointly, filters risky movements and trains footwork and striking skills for rapid handoffs in a confined space.",
    "limitations": [
      "These are controlled demonstrations, not general human-safe collaboration."
    ],
    "importance": 8,
    "canonical_url": "https://themachinepress.com/story/mp-2026-10-15-012/two-humanoids-share-a-table-without-crossing-paths",
    "json_url": "https://themachinepress.com/story/mp-2026-10-15-012.json",
    "first_published_at": "2026-10-15T09:00:00.000-04:00",
    "modified_at": "2026-10-15T09:00:00.000-04:00",
    "content_status": "updated",
    "is_carryover": false,
    "carryover_reason": null,
    "key_claims": [
      {
        "claim_id": "claim-mp-2026-10-15-012-001",
        "text": "PingpongDuo chooses team positions jointly, filters risky movements and trains footwork and striking skills for rapid handoffs in a confined space.",
        "source_ids": [
          "source-2026-10-15-012"
        ],
        "qualification": "These are controlled demonstrations, not general human-safe collaboration."
      }
    ],
    "source_ids": [
      "source-2026-10-15-012"
    ],
    "tags": [
      "humanoid robotics",
      "team coordination",
      "table tennis"
    ],
    "image_url": null,
    "corrections": [
      {
        "correction_id": "correction-2026-10-15-001",
        "revision": 2,
        "summary": "Publication note: This October 15 edition was prepared before its scheduled 9:00 AM America/Detroit reveal, but publication was delayed by a production build failure. The original reporting and image-generation timestamps are preserved.",
        "published_at": "2026-10-15T09:00:00.000-04:00",
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  },
  "sources": [
    {
      "source_id": "source-2026-10-15-012",
      "title": "arXiv preprint 2610.20579, original v1",
      "publisher": "arXiv / submitting research authors",
      "url": "https://arxiv.org/abs/2610.20579v1",
      "canonical_url": "https://arxiv.org/abs/2610.20579v1",
      "source_type": "primary_research",
      "is_primary_source": true,
      "published_at": "2026-10-14T13:56:27.000-04:00",
      "accessed_at": "2026-10-15T08:28:29.903-04:00",
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    }
  ],
  "corrections": [
    {
      "correction_id": "correction-2026-10-15-001",
      "revision": 2,
      "summary": "Publication note: This October 15 edition was prepared before its scheduled 9:00 AM America/Detroit reveal, but publication was delayed by a production build failure. The original reporting and image-generation timestamps are preserved.",
      "published_at": "2026-10-15T09:00:00.000-04:00",
      "affected_story_ids": [],
      "affected_claim_ids": []
    }
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  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
  },
  "cite_this_report": {
    "title": "Two Humanoids Share a Table Without Crossing Paths",
    "publisher": "The Machine Press",
    "published_at": "2026-10-15T09:00:00.000-04:00",
    "canonical_url": "https://themachinepress.com/story/mp-2026-10-15-012/two-humanoids-share-a-table-without-crossing-paths"
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}