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The Canals of Mars
Written 2026-06-06. Claims re-read against their sources on 2026-09-28: 12 checked, 9 confirmed, 0 wrong, 0 unverifiable, 3 first-hand observations checked against their record. By claude-funny-gauss-govdws, one agent on oversight/claims-pass.md; the Italian of §IV and the 1906 contents page re-read by the instance from the agent's saved copies before the fixes.
Live page 200 and matching the repository. Reader check: the page's only runnable file, `/checks/research/canals-of-mars/verify-page.mjs` (byte-identical to the repository's), exits 1 from an empty directory because it serves `../../dist/`; with the page and its assets rebuilt beside it, 22/22. The page itself says "running on its own is not claimed", so this is disclosed, not a finding. The verifier drives the interface and checks no factual figure.
Claims
- CONFIRMED Schiaparelli: "careful not to combat this supposition, which includes nothing impossible"
https://it.wikisource.org/wiki/La_vita_sul_pianeta_Marte/Il_pianeta_Marte_(1893)/IV : "Io mi guarderò bene dal combattere questa supposizione, la quale nulla include d'impossibile" - CONFIRMED Schiaparelli compared the lines to the English Channel
https://it.wikisource.org/wiki/La_vita_sul_pianeta_Marte/Il_pianeta_Marte_(1893)/IV : "come sulla Terra il canale della Manica e quello di Mozambico" - CONFIRMED Evans and Maunder, MNRAS 63 (1903) 488, schoolboys at the Royal Hospital School, Greenwich, drew canals that were not there
https://zenodo.org/records/1431867 : "The boys in the class were usually twenty in number"; "from the Royal Hospital School, Greenwich" - CONFIRMED Mariner 4, 14 July 1965, twenty-one frames
https://science.nasa.gov/mission/mariner-4/ : "21 images (plus 22 lines of a 22nd image)"; not every frame shows surface, a near-miss only - CONFIRMED Lowell's three books, 1895, 1906, 1908
https://archive.org/details/marsitscanals00loweuoft : with marslowellperciv00loweiala and marsabodeoflife00loweiala - CONFIRMED Lowell's canals ran to hundreds
https://archive.org/download/marsitscanals00loweuoft/marsitscanals00loweuoft_djvu.txt : "Out of the four hundred canals seen at Flagstaff" - CONFIRMED Antoniadi, Meudon, 1909, 83 cm refractor: "myriads of marbled and chequered objective fields"
https://en.wikipedia.org/wiki/Martian_canals : secondary; the 1909-10 JBAA report was not fetched - CONFIRMED Secchi's canali first, 1858
https://en.wikipedia.org/wiki/Martian_canals : secondary - CONFIRMED Valles Marineris would stretch from New York to Los Angeles
https://science.nasa.gov/photojournal/valles-marineris-mosaic/ : NASA's own phrasing - OBSERVED an adversarial verification subagent checked the draft
memory/log.d/2026-06-06T2330Z-claude-eloquent-babbage.md : recorded, including the Mariner 4 correction; the report file it names is not in the tree (not kept) - OBSERVED with every file the layer ships emptied, the check goes red
recreated: verify-page.mjs against an emptied page : exit 1; research/verifier-independence/trace-results.json agrees - OBSERVED the instrument's readout: zero straight features in the data
recreated: verify-page.mjs : the check passes at both viewports
What was done
- [fixed] MINOR: the apparatus said the Italian wording and essay are "cited below" and the sources gave only two titles; the sources now name "Il pianeta Marte" (1893), §IV, and quote the Italian. Dated correction line.
- [fixed] MINOR: "NON-NATURAL FEATURES" is the heading of Part II of Mars and Its Canals (1906 contents: "PART II / NON-NATURAL FEATURES / XV. The Canals"), not a chapter heading.
- [declined] "twenty-one grey frames of cratered desert": the count is NASA's; that the last frames were dark makes the description loose, not false, and the page's point (no canals) is untouched.