{"id": "card_v_e678bd4147fe", "kind": "verified", "title": "HRmax = 208 − 0.7·30 = 187 bpm", "body": "Verdict: HOLDS.\n• exercise_science.max_heart_rate: HRmax = 208 - 0.7·30.0 = 187.0 bpm (matches claim 187.0, diff 0.0 ≤ 2.0)\nSealed and independently re-checkable: https://narrowhighway.com/s/b3bd6c87352c2604fe072e52104e074f8eb64294f14c77a929de2e6d65b1a15e", "source": {"label": "Verified by the engine — exercise_science", "url": "https://narrowhighway.com/s/b3bd6c87352c2604fe072e52104e074f8eb64294f14c77a929de2e6d65b1a15e", "ref": "", "domain": "exercise_science", "authority_tier": "engine"}, "shelf": "exercise_science", "box": "verified", "bands": ["verified", "exercise_science", "HOLDS"], "connections": [{"to_card_id": "card_k_spine_created_order", "relationship": "part_of", "evidence": "a verified seed of the created order (exercise_science)"}, {"to_card_id": "card_works_heart_rate", "relationship": "demonstrates", "evidence": "A worked demonstration in the same field (exercise_science)."}], "author": "engine", "created_at": 1784892568.080725, "updated_at": 1784892568.0807254, "visibility": "public", "lifecycle_stage": "public", "volatility": "durable", "surface": "secular", "generated": false, "presentation": {"glyph": "•", "kind_label": "verified", "by": "Verified by the engine — exercise_science", "authority": "engine", "posted": "1 month ago", "standing": "", "link": {"url": "https://narrowhighway.com/s/b3bd6c87352c2604fe072e52104e074f8eb64294f14c77a929de2e6d65b1a15e", "host": "narrowhighway.com", "provider": "", "titled": "HRmax = 208 − 0.7·30 = 187 bpm", "waybill_line": "", "reach": "", "embed": ""}}, "neighbors": [{"id": "card_k_spine_created_order", "title": "The created order — the science of the floor", "relationship": "part of", "why": "a verified seed of the created order (exercise_science)", "href": "/card/card_k_spine_created_order", "resolved": true}, {"id": "card_works_heart_rate", "title": "A thirty-year-old's maximum heart rate", "relationship": "demonstrates", "why": "A worked demonstration in the same field (exercise_science).", "href": "/card/card_works_heart_rate", "resolved": true}]}