Cast, Not Carved · claim GEO-C579 · Mechanism rung · The attribution claims
The caliche walls of the 13th-century Hohokam Casa Grande structure (Arizona) were made workable by plant-acid disaggregation with an added hardener — a technique conventional accounts of caliche do not recognize — and have endured over 600 years in a harsh climate.
source anchor
Davidovits Ch 9, pp ~104–106
Evidence
No evidence records attached yet — this claim is held on its source anchor alone: the ledger knows where the proposition is stated and has admitted no observation behind it. A source is not evidence.
an honest empty state
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