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  "story": {
    "story_id": "mp-2026-08-31-002",
    "source_story_id": "tmp-feature-aero-hand-open",
    "edition_id": "mp-2026-08-31-morning-0053",
    "edition_url": "https://themachinepress.com/edition/2026-08-31",
    "position": 2,
    "story_type": "secondary",
    "section": "robotics",
    "editorial_classification": "editorial",
    "headline": "The Tendons Shipped With Their Simulator",
    "slug": "the-tendons-shipped-with-their-simulator",
    "dek": "Aero Hand Open releases a cable-driven anthropomorphic hand with its transmission model, actuation map, training environment and deployment stack.",
    "summary": "Aero Hand Open releases a cable-driven anthropomorphic hand with its transmission model, actuation map, training environment and deployment stack.",
    "body_text": "Moving actuators away from the joints can make an anthropomorphic hand cheaper, but the shared cable transmission is harder to simulate and individual joints are not independently commandable. The project packages a simulation of that transmission, an identified map between motor commands and the coupled joints, and reinforcement-learning tooling. Its authors report that policies trained entirely in simulation run on the physical hand without fine-tuning or state estimation, and they release the mechanical design and software stack; broader dexterity still requires independent testing.",
    "why_it_matters": "Aero Hand Open releases a cable-driven anthropomorphic hand with its transmission model, actuation map, training environment and deployment stack.",
    "limitations": [
      "Moving actuators away from the joints can make an anthropomorphic hand cheaper, but the shared cable transmission is harder to simulate and individual joints are not independently commandable."
    ],
    "importance": 9,
    "canonical_url": "https://themachinepress.com/story/mp-2026-08-31-002/the-tendons-shipped-with-their-simulator",
    "json_url": "https://themachinepress.com/story/mp-2026-08-31-002.json",
    "first_published_at": "2026-08-31T09:00:00.000-04:00",
    "modified_at": "2026-08-31T09:00:00.000-04:00",
    "content_status": "new",
    "is_carryover": false,
    "carryover_reason": null,
    "key_claims": [
      {
        "claim_id": "claim-mp-2026-08-31-002-001",
        "text": "Aero Hand Open releases a cable-driven anthropomorphic hand with its transmission model, actuation map, training environment and deployment stack.",
        "source_ids": [
          "source-2026-08-31-002"
        ],
        "qualification": "Moving actuators away from the joints can make an anthropomorphic hand cheaper, but the shared cable transmission is harder to simulate and individual joints are not independently commandable."
      }
    ],
    "source_ids": [
      "source-2026-08-31-002"
    ],
    "tags": [
      "robot hands",
      "sim-to-real",
      "open hardware"
    ],
    "image_url": "https://themachinepress.com/issues/2026-08-31/feature-aero-hand-open.png",
    "corrections": []
  },
  "sources": [
    {
      "source_id": "source-2026-08-31-002",
      "title": "arXiv preprint 2608.28578",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2608.28578",
      "canonical_url": "https://arxiv.org/abs/2608.28578",
      "source_type": "primary_research",
      "is_primary_source": true,
      "published_at": "2026-08-28T13:53:48.000-04:00",
      "accessed_at": "2026-08-31T08:28:26.000-04:00",
      "supports_claim_ids": [
        "claim-mp-2026-08-31-002-001"
      ]
    }
  ],
  "corrections": [],
  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
  },
  "cite_this_report": {
    "title": "The Tendons Shipped With Their Simulator",
    "publisher": "The Machine Press",
    "published_at": "2026-08-31T09:00:00.000-04:00",
    "canonical_url": "https://themachinepress.com/story/mp-2026-08-31-002/the-tendons-shipped-with-their-simulator"
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