We publish our audit record because accuracy claims should be checkable. Every entry on this site runs through an automated fact-audit pipeline (accuracy audit → source-grounded repair → visual QA); this page is generated from that pipeline's own report, not written by hand.
Last full accuracy audit: 2026-08-29 · 9 entries checked · 4 flagged · 5 issues confirmed · 4 corrected · 1 still open
Azimuthal equidistant projection — The earliest surviving terrestrial map using the azimuthal equidistant projection is a world map by Johannes Ruysch from 1507, not Glareanus's hemispheres from c. 1510.
Cartography — The claim 'Gerardus Mercator first used the word "atlas" to describe a collection of maps' is incorrect; the first use is generally attributed to Abraham Ortelius in 1570.
Cartography — The claim 'Su Song's star map (1092) used a cylindrical or pseudo-cylindrical projection (not equidistant cylindrical)' is factually wrong; it is an equidistant cylindrical projection.
Computer cartography — Waldo Tobler's 1959 paper is titled 'Automation and Cartography' but the 'map in–map out' (MIMO) system was introduced in a later work, not in that 1959 paper.
Geovisualization — The claim that 'The term visualization first appeared in cartographic literature in an article by John K. Wright in 1953' is disputed; the first use of 'visualization' in a cartographic context is often attributed to that article, but the modern concept of geo
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