{"abstract":"An absent catalog distance becomes a fabricated spatial point.","category":"Astronomical coordinate conventions","checks":6,"contract":"Toy catalog projection: direction is a three-number vector; distance None means unknown and returns None; all nonnegative numeric distances including zero produce componentwise products.","contract_signature":"direction, distance","evaluation_group":"model-9feebf48e51f2292","failed_approach":"Truthiness conflates the explicit zero-distance sentinel with absence.","family":"z-astronomy-unknown-distance","id":"FA-12166","implementations":{"attempt":{"sha256":"7ac77318b8dd8321f9230a54bd6a568a7b96dd221d40065d5a0c1bf7a0ce247c","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(direction, distance):\n    return [v*distance for v in direction] if distance else None\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('unknown', solve([1,0,0], None), None)\ncheck('explicit zero', solve([1,0,0], 0), [0,0,0])\ncheck('known radial', solve([1,0,0], N), [N,0,0])\ncheck('other axis', solve([0,1,0], N), [0,N,0])\ncheck('signed direction', solve([-1,0,0], N), [-N,0,0])\ncheck('fractional distance', solve([0,0,1], 0.5), [0,0,0.5])\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"f404ed844bde40431d2cd84e88136e305ca49eaa6847d5259d2b662d90036693","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(direction, distance):\n    return [v*(distance if distance is not None else 1) for v in direction]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('unknown', solve([1,0,0], None), None)\ncheck('explicit zero', solve([1,0,0], 0), [0,0,0])\ncheck('known radial', solve([1,0,0], N), [N,0,0])\ncheck('other axis', solve([0,1,0], N), [0,N,0])\ncheck('signed direction', solve([-1,0,0], N), [-N,0,0])\ncheck('fractional distance', solve([0,0,1], 0.5), [0,0,0.5])\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":"Deterministic stipulated adapter model; no ephemeris, physical accuracy, or production astronomy library claims. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"z-astronomy-unknown-distance","generated_at":"2026-09-29T14:38:54.330229+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Astronomical catalog and observation adapters must preserve the declared coordinate convention across software boundaries.","root_cause":"A direction-only entry receives an invented distance.","sha256":"430244ea3bb7cd6600e36cd99cd607cb8ef3148412b38cfd7660a304872e7df9","title":"An absent catalog distance becomes a fabricated spatial point · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verified":true,"visibility":"public","verification":{"attempt":{"elapsed_ms":38.625,"exit_code":1,"observations":[{"actual":null,"check":"unknown","expected":null,"passed":true},{"actual":null,"check":"explicit zero","expected":[0,0,0],"passed":false},{"actual":[1,0,0],"check":"known radial","expected":[1,0,0],"passed":true},{"actual":[0,1,0],"check":"other axis","expected":[0,1,0],"passed":true},{"actual":[-1,0,0],"check":"signed direction","expected":[-1,0,0],"passed":true},{"actual":[0.0,0.0,0.5],"check":"fractional distance","expected":[0,0,0.5],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"unknown\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"explicit zero\", \"actual\": null, \"expected\": [0, 0, 0], \"passed\": false}, {\"check\": \"known radial\", \"actual\": [1, 0, 0], \"expected\": [1, 0, 0], \"passed\": true}, {\"check\": \"other axis\", \"actual\": [0, 1, 0], \"expected\": [0, 1, 0], \"passed\": true}, {\"check\": \"signed direction\", \"actual\": [-1, 0, 0], \"expected\": [-1, 0, 0], \"passed\": true}, {\"check\": \"fractional distance\", \"actual\": [0.0, 0.0, 0.5], \"expected\": [0, 0, 0.5], \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":37.529,"exit_code":1,"observations":[{"actual":[1,0,0],"check":"unknown","expected":null,"passed":false},{"actual":[0,0,0],"check":"explicit zero","expected":[0,0,0],"passed":true},{"actual":[1,0,0],"check":"known radial","expected":[1,0,0],"passed":true},{"actual":[0,1,0],"check":"other axis","expected":[0,1,0],"passed":true},{"actual":[-1,0,0],"check":"signed direction","expected":[-1,0,0],"passed":true},{"actual":[0.0,0.0,0.5],"check":"fractional distance","expected":[0,0,0.5],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"unknown\", \"actual\": [1, 0, 0], \"expected\": null, \"passed\": false}, {\"check\": \"explicit zero\", \"actual\": [0, 0, 0], \"expected\": [0, 0, 0], \"passed\": true}, {\"check\": \"known radial\", \"actual\": [1, 0, 0], \"expected\": [1, 0, 0], \"passed\": true}, {\"check\": \"other axis\", \"actual\": [0, 1, 0], \"expected\": [0, 1, 0], \"passed\": true}, {\"check\": \"signed direction\", \"actual\": [-1, 0, 0], \"expected\": [-1, 0, 0], \"passed\": true}, {\"check\": \"fractional distance\", \"actual\": [0.0, 0.0, 0.5], \"expected\": [0, 0, 0.5], \"passed\": true}], \"passed\": false}\n"}},"member_only":{"stages":["fixed"],"fields":["implementations.fixed","verification.fixed","harness","repair"],"note":"The verified repair, its recorded checks, the repair description, and the scoring harness are available to members."}}