{"query": "The Floor of Discovery — one floor, and by its design the fe", "count": 20, "results": [{"id": "card_domchk_periodic_table_claimed_atomic_number", "title": "Periodic Table: atomic number", "shelf": "periodic_table", "surface": "secular", "snippet": "A worked check in periodic table: atomic number.\n\nGIVEN\n  symbol = Fe\n\nCLAIMED\n  claimed_atomic_number = 26\n\nTHE ENGINE'S VERDICT\n  periodic_table.element: CONFIRMED — Fe (iron, Z=26) — definitional c", "authority_tier": "reference", "source": "The verifier's own documented relation, and a run this engine performed against it (deterministic; re-runnable with tools/domain_goldens.py)", "readable": false, "generated": false}, {"id": "card_domchk_periodic_table_claimed_atomic_mass", "title": "Periodic Table: atomic mass", "shelf": "periodic_table", "surface": "secular", "snippet": "A worked check in periodic table: atomic mass.\n\nGIVEN\n  isotopes = [{'abundance': 5.845, 'mass': 53.9396}, {'abundance': 91.754, 'mass': 55.9349}, {'abundance': 2.119, 'mass': 56.9354}, {'abundance': ", "authority_tier": "reference", "source": "The verifier's own documented relation, and a run this engine performed against it (deterministic; re-runnable with tools/domain_goldens.py)", "readable": false, "generated": false}, {"id": "card_n_77d37f00f1dd", "title": "Base pairing and the central dogma", "shelf": "science", "surface": "secular", "snippet": "The information flows DNA -> RNA -> protein (Crick's central dogma), and it is held by\ncomplementary pairs: A binds T with two hydrogen bonds, G binds C with three. Chargaff's rule\n(that A=T and G=C i", "authority_tier": "engine_derived", "source": "Concordance assay — 2026-07-09", "readable": false, "generated": false}, {"id": "card_n_bbecbbc24fb6", "title": "The nucleus — the strongest glue and the slowest clocks", "shelf": "science", "surface": "secular", "snippet": "Past gamma rays the spectrum ends and the nucleus itself begins. One chain,\neight steps, sealed — four of them IN-DOMAIN by the nuclear fleet: https://narrowhighway.com/s/8a5e89ab13bc499f39240c64360d9", "authority_tier": "engine_derived", "source": "Concordance assay — 2026-07-09", "readable": false, "generated": false}, {"id": "card_seal_c4ba7c9a50a6c988c0dbde3b1d64ac57b5fbf95aa4d92d83cc9da63a292e462a", "title": "Receipt c4ba7c9a50a6… — sealed: record", "shelf": "seals", "surface": "secular", "snippet": "{\n \"anchors\": [],\n \"axis_coords\": {\n  \"axis\": \"mathematics\",\n  \"dimensions\": [\n   \"reasoning\"\n  ]\n },\n \"gate_results\": [\n  {\n   \"details\": {\n    \"broken_at\": null,\n    \"confirmed_steps\": 1,\n    \"error", "authority_tier": "engine_derived", "source": "Narrow Highway engine — sealed record", "readable": false, "generated": false}, {"id": "card_seal_c523fe4376ee412f41e0fdfb2cfda66d23ff3518e4138c63e327171e2c357945", "title": "Receipt c523fe4376ee… — sealed: record", "shelf": "seals", "surface": "secular", "snippet": "{\n \"anchors\": [],\n \"axis_coords\": {\n  \"axis\": \"mathematics\",\n  \"dimensions\": [\n   \"reasoning\"\n  ]\n },\n \"gate_results\": [\n  {\n   \"details\": {\n    \"broken_at\": null,\n    \"confirmed_steps\": 1,\n    \"error", "authority_tier": "engine_derived", "source": "Narrow Highway engine — sealed record", "readable": false, "generated": false}, {"id": "card_v_6b5113275e68", "title": "η_Carnot = 1 − 300/400 = 0.25", "shelf": "thermodynamics", "surface": "secular", "snippet": "Verdict: HOLDS.\n• thermodynamics.carnot_efficiency: 1 − 300.0/400.0 = 0.25 (matches claim 0.25)\nSealed and independently re-checkable: https://narrowhighway.com/s/67c732b55196f3c144e182c6e05c21712136f", "authority_tier": "engine", "source": "Verified by the engine — thermodynamics", "readable": false, "generated": false}, {"id": "card_n_cfb57dd6b005", "title": "Radioactive decay — the exponential clock of matter", "shelf": "science", "surface": "secular", "snippet": "Sealed in-domain: after one half-life exactly half remains; after two, exactly one\nquarter (2^(−2) = 1/4, exact); carbon-14's decay constant is ln2/5730 years = 3.833×10⁻¹²\nper second: https://narrowh", "authority_tier": "engine_derived", "source": "Concordance assay — 2026-07-09", "readable": false, "generated": false}, {"id": "card_src_pd_technicalmechani00mauruoft", "title": "Technical mechanics, statics and dynamics", "shelf": "practical", "surface": "secular", "snippet": "Technical mechanics, statics and dynamics (1917). A book returned to the public domain — archive.org copyright status: NOT_IN_COPYRIGHT. The full text (1,083,983 bytes) is held on the ark; waybill sha", "authority_tier": "reference", "source": "public domain (copyright expired)", "readable": true, "generated": false}, {"id": "card_src_pd_listofbooksonhis00johnrich", "title": "A list of books on the history of industry and industrial arts", "shelf": "practical", "surface": "secular", "snippet": "A list of books on the history of industry and industrial arts (1915). A book returned to the public domain — archive.org copyright status: NOT_IN_COPYRIGHT. The full text (1,258,045 bytes) is held on", "authority_tier": "reference", "source": "public domain (copyright expired)", "readable": true, "generated": false}, {"id": "card_src_fed_packtransport00unitrich", "title": "Manual of pack transportation", "shelf": "practical", "surface": "secular", "snippet": "Manual of pack transportation. A United States federal publication, public domain (17 USC 105). The full text (473,058 bytes) is held on the ark; waybill sha256 4915fe06bd970165…; origin archive.org/p", "authority_tier": "reference", "source": "US Army field & technical manuals (PD, 17 USC 105)", "readable": true, "generated": false}, {"id": "card_seal_5a24b6456eb942133195e181adcef7173e888ebde6b56f09b15fe949d8332526", "title": "Receipt 5a24b6456eb9… — sealed: record", "shelf": "seals", "surface": "secular", "snippet": "{\n \"anchors\": [],\n \"axis_coords\": {\n  \"axis\": \"nutrition\",\n  \"dimensions\": [\n   \"authority_trust\",\n   \"conservation_balance\",\n   \"metabolism\",\n   \"physical_substance\"\n  ],\n  \"umbrella\": \"biology\"\n },\n", "authority_tier": "engine_derived", "source": "Narrow Highway engine — sealed record", "readable": false, "generated": false}, {"id": "card_seal_0847493b2b2481c2e0eb3ff477b66103de2e212bc001fe4c25135b9563d9fd1b", "title": "Receipt 0847493b2b24… — sealed: record", "shelf": "seals", "surface": "secular", "snippet": "{\n \"anchors\": [],\n \"axis_coords\": {\n  \"axis\": \"nutrition\",\n  \"dimensions\": [\n   \"authority_trust\",\n   \"conservation_balance\",\n   \"metabolism\",\n   \"physical_substance\"\n  ],\n  \"umbrella\": \"biology\"\n },\n", "authority_tier": "engine_derived", "source": "Narrow Highway engine — sealed record", "readable": false, "generated": false}, {"id": "card_seal_07f32bf3ffdcc45b6ab8e635ca023f2e590162d796f4ff9a4207672dcd2afc71", "title": "Receipt 07f32bf3ffdc… — sealed: record", "shelf": "seals", "surface": "secular", "snippet": "{\n \"anchors\": [],\n \"axis_coords\": {\n  \"axis\": \"mathematics\",\n  \"dimensions\": [\n   \"reasoning\"\n  ]\n },\n \"gate_results\": [\n  {\n   \"details\": {\n    \"broken_at\": \"b\",\n    \"confirmed_steps\": 0,\n    \"error_", "authority_tier": "engine_derived", "source": "Narrow Highway engine — sealed record", "readable": false, "generated": false}, {"id": "card_seal_7ad6c053203c3fb37f584e7e15e45537802dd8a5eb2f7eea3afba5195a6aab85", "title": "Receipt 7ad6c053203c… — sealed: record", "shelf": "seals", "surface": "secular", "snippet": "{\n \"anchors\": [],\n \"gate_results\": [\n  {\n   \"details\": {\n    \"broken_at\": \"claim_false_is_not_true\",\n    \"confirmed_steps\": 0,\n    \"error_at\": \"negative_probability\",\n    \"gap_at\": null,\n    \"steps\": ", "authority_tier": "engine_derived", "source": "Narrow Highway engine — sealed record", "readable": false, "generated": false}, {"id": "card_domchk_periodic_table_claimed_name", "title": "Periodic Table: name", "shelf": "periodic_table", "surface": "secular", "snippet": "A worked check in periodic table: name.\n\nGIVEN\n  symbol = Fe\n\nCLAIMED\n  claimed_name = iron\n\nTHE ENGINE'S VERDICT\n  periodic_table.element: CONFIRMED — Fe (iron, Z=26) — definitional claims match\n\nAND", "authority_tier": "reference", "source": "The verifier's own documented relation, and a run this engine performed against it (deterministic; re-runnable with tools/domain_goldens.py)", "readable": false, "generated": false}, {"id": "card_seal_d3d898369ae88f2d18546843ae6184cef25839c0aacbddee0afa78dfa0af5d87", "title": "Receipt d3d898369ae8… — sealed: record", "shelf": "seals", "surface": "secular", "snippet": "{\n \"anchors\": [],\n \"axis_coords\": {\n  \"axis\": \"nutrition\",\n  \"dimensions\": [\n   \"authority_trust\",\n   \"conservation_balance\",\n   \"metabolism\",\n   \"physical_substance\"\n  ],\n  \"umbrella\": \"biology\"\n },\n", "authority_tier": "engine_derived", "source": "Narrow Highway engine — sealed record", "readable": false, "generated": false}, {"id": "card_src_pd_mechanicscompani00nich", "title": "The mechanic's companion, or, The Elements and practice of carpentry, joinery, bricklaying, masonry, slating, plastering, painting, smithing and turning : comprehending the latest ", "shelf": "practical", "surface": "secular", "snippet": "The mechanic's companion, or, The Elements and practice of carpentry, joinery, bricklaying, masonry, slating, plastering, painting, smithing and turning : comprehending the latest improvements and con", "authority_tier": "reference", "source": "public domain (copyright expired)", "readable": true, "generated": false}, {"id": "card_seal_93986b43be00cc51e3806e535baee7bb1467c3d0664b7f141199bdc0387af5cb", "title": "Receipt 93986b43be00… — sealed: record", "shelf": "seals", "surface": "secular", "snippet": "{\n \"anchors\": [],\n \"axis_coords\": {\n  \"axis\": \"mathematics\",\n  \"dimensions\": [\n   \"reasoning\"\n  ]\n },\n \"gate_results\": [\n  {\n   \"details\": {\n    \"broken_at\": null,\n    \"confirmed_steps\": 1,\n    \"error", "authority_tier": "engine_derived", "source": "Narrow Highway engine — sealed record", "readable": false, "generated": false}, {"id": "card_seal_185aa42784feec23fb012c11eb8fe3ac324ddf74c0b4c4a7a71617b38247e356", "title": "Receipt 185aa42784fe… — sealed: record", "shelf": "seals", "surface": "secular", "snippet": "{\n \"anchors\": [],\n \"axis_coords\": {\n  \"axis\": \"mathematics\",\n  \"dimensions\": [\n   \"reasoning\"\n  ]\n },\n \"gate_results\": [\n  {\n   \"details\": {\n    \"broken_at\": null,\n    \"confirmed_steps\": 1,\n    \"error", "authority_tier": "engine_derived", "source": "Narrow Highway engine — sealed record", "readable": false, "generated": false}], "house": {"door": "FIND", "kind": "cards", "trail": "results", "seal": null, "next_step": {"do": "open the top card", "door": "FIND", "tool": "card_get", "params": {"id": "card_domchk_periodic_table_claimed_atomic_number"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}