← All conjectures · Islamicate book cultures
Colophons don't heap
Status is derived only from the shepherd-authored triage/prediction data above -- community submissions and claims are a separate overlay and can never change it (see the participation panel below).
“Anticipated in print” means the direction of this claim already appears in scholarship, while this exact test has never been run — it records prior art, not proof; nothing here counts as supported or falsified until a registered resolution says so.
Claim (verbatim)
Colophons don't heap. This connects a demographer's instrument with scribal diplomatics. Dates recalled or reconstructed from memory heap on round numbers; dates written down on the day itself do not. A colophon is written at the moment of completion, often with weekday and month attached for the closing blessing, while a biographical dictionary's death date is often fixed decades later from hearsay and inference. The two great date corpora of the Islamic book world should therefore sit at opposite ends of the heaping spectrum, and the size of the gap measures how much of the civilization's chronology was contemporaneous record versus retrospective reconstruction.
Prediction clause (verbatim)
Among dated colophons, the share of AH years ending in 0 or 5 stays at or below 23% (against a 20% uniform null), while death dates in the major biographical dictionaries show a 0/5-ending share of at least 28%, and heaping in the dictionaries increases with the interval between the subject's death and the compiler's lifetime. Primary clause: the conjunction of the colophon share at or below 23% and the dictionary share at or above 28%; the verdict follows it.
Kill-dataset (verbatim)
Kill: FIHRIST dated-manuscript records (thousands of colophon years) against death dates extracted from al-Dhahabi and al-Safadi in the OpenITI corpus.
In the kill-dataset registry:
Nobody has run this test. The kill-data is named above. If you can run it — or you know the paper that already settles it — claim the kill or submit the prior scholarship. Kills and prior scholarship are credited here, by name, as they come in.
How this item is catalogued
Catalogue tags are curatorial metadata that make the conjecture findable. They are not findings, not a novelty verdict, and naming a source family is not a promise that the data exist or are accessible. Each dimension below says whether it was assigned, reviewed with none applying, uncertain, or not yet reviewed, and who recorded it.
- Place & era tags — Assigned
- Islamic world; Medieval Tagged by claude-opus-4-8
- Dating — Phenomenon
- Dated c. 700 CE – 1800 CE Islamic manuscript colophon-dating vs. biographical-dictionary (al-Dhahabi/al-Safadi, 14th c.) death-date heaping, across the general Arabic manuscript era. Tagged by claude-sonnet-5 + claude-fable-5 (gate)
- Subject — Not yet reviewed
- Finer subject topic — Assigned
- Manuscript and scribal production Tagged by earlier curation lane (link provenance on record)
- Claim level — Assigned
- Record claim Tagged by earlier curation lane (link provenance on record)
- Method — Assigned
- Channel dissociation Tagged by earlier curation lane (link provenance on record)
- Evidence source — Assigned
- Digitized texts; Hadith isnads; Union catalogues Tagged by earlier curation lane (link provenance on record)
- Research stage — Idea — no test designed
On Inferpedia
This conjecture is linked to the following pages on Inferpedia, an encyclopedia of the missing — working atlas pages, some still early scaffolding.
Provenance
Run: Fresh agent generation · model: claude-fable-5
Generated by a fresh Fable-tier instance (claude-fable-5) at maximum effort with generation-first blindness (no repo reads, no web searches, no DB queries); 218-title list supplied at launch, titles only, no verdicts/dossiers seen; prompt pre-committed in docs/generated/conjectures_1001_wave_ledger.md and docs/generated/conjecture_fresh_fable_w03_prompt_20260708.txt. Wave W03 of docs/GOAL_CONJECTURES_1001_CAMPAIGN_20260708.md. Novelty unverified by construction.
Novelty / leakage triage
anticipated in the literature — this exact test has never been run
Age/date heaping is a mature demographic instrument (Whipple's index; A'Hearn–Baten–Crayen) and both Islamic date corpora exist in machine-readable form (Romanov's death dates; colophon corpora), but pitting contemporaneous colophon dates against retrospective biographical death dates on the heaping spectrum is an un-run application.
Predictions
No prediction registered yet.
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