Cast, Not Carved · claim GEO-C519 · Mechanism rung · Ingredients and feasibility
The natron route to artificial limestone (Na₂CO₃ + CaO → CaCO₃ + 2NaOH) sidesteps the implausible fuel demand of lime-burning at pyramid scale, but its own feasibility at that scale is untested.
source anchor
Fóti Ch 2, pp ~75–77
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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Still missing: plain-language gloss, credibility assessment, diagnosticity assessment, strongest objection, what would change our mind. A claim gains them when an edition features it and the edition's adopted assessment supplies the full treatment — a decision the panel reviews, not a field anyone flips.