No structured catalog exists of already-accessible cast-stone-relevant material — detached fragments, museum specimens, old cores, surviving thin sections, restoration debris — forcing every analytical proposal to re-solve the sample-access problem from scratch.

an honest empty state

This claim is in the ledger but not in the current edition's featured set. Nothing here has been assessed — that absence is information, not an oversight.

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.