AI-generated conjecture · a wager, not a finding
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The common of saints is scar tissue
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).
Claim (verbatim)
When a saint had no proper office, or when the proper one was lost, the liturgy fell back on the Common of Saints - the generic offices for a martyr, a confessor, a virgin, sung from a shared menu and requiring no new music. The Common is usually read as convenience; this conjecture reads it as scar tissue over the wound of lost proper offices. The mechanism is substitution under loss: a feast that once had, or was meant to have, its own historia but whose music was never composed or did not survive is served by the Common, so the density of common-office use across the sanctorale is an inverse map of proper-office survival, and it should increase over time as cults accumulate faster than proper offices are composed and as older propers are lost. The generic chant is the visible healing over an invisible absence. So the ratio of common to proper chant in a sanctorale is not a measure of laziness but a survival statistic: the more the Common is used, the more proper offices went missing. Prediction restated: the share of sanctorale feasts served by Common rather than proper chant rises across the medieval centuries in the dated sources, and in later books a clear majority of ranked saints' feasts are sung entirely from the Common.
Prediction clause (verbatim)
Prediction: in dated Cantus-indexed sanctorale sources, the share of ranked saints' feasts served entirely from the Common of Saints rather than from proper chant rises across the medieval centuries, and in the later books (thirteenth century and after) a majority of ranked saints' feasts carry no proper office chant at all (primary clause: the later-book majority of ranked feasts sung from the Common; the verdict follows it). A feast counts as proper only if it carries at least one proper item beyond the Common; coverage guard: because a lost proper leaves only the Common witness, the measure is a lower bound on original proper provision, and the test voids if feast-by-feast common-versus-proper assignment can be read for fewer than 200 feasts.
Kill-dataset (verbatim)
Kill (partly built): the Cantus Database sanctorale inventories across dated sources, tagging each ranked feast as proper-served or Common-served and computing the Common share as a function of source date; the operation is a common-to-proper substitution rate over time.
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.
Provenance
Run: Fresh agent generation · model: claude-fable-5
Fresh blind generation by claude-fable-5, 2026-07-17, liturgical-chant wave on CANTUS/Cantus Index, Corpus Troporum, and Analecta Hymnica/Chevalier. Every Kill names a real chant instrument and a countable census or inventory-geometric operation - transcribable-to-total ratios, source-count geometry, singleton (unica) fractions, catalogue-to-melody survival ratios, feast-rank concordance-breadth gradients, contraction ratios, and text-to-melody attestation lags - with thresholds far from 1 and explicit coverage guards distinguishing what the databases index from what existed. Operation family kept DISJOINT from the owned w09 music_liturgy ground (which joins chant metadata to external economic/material datasets: freight, wax, plague, mints, fairs, necrologies) and from the w08 chant cluster (variant-rate, melodic dialect, differentia decline, lesson-length, copying-error forensics). 0 items dropped; deliberately steered clear of w08-039 (Old Hispanic copying-error profile), w08-001/003 (feast-age variant rate / differentia), w09-026 (Old Roman property network), w09-016/035 (trope economics/prosopography), and w09-022 (sequence fair-network) by using pure census/inventory-geometry operations on the named instruments. Confidence flags on exact counts recorded in the register report. Slugs via django slugify.
Novelty / leakage triage
anticipated in the literature — this exact test has never been run
The Common of Saints as the fallback where no proper existed is textbook liturgiology, and CAO publishes sanctorale inventories; but the conjecture's dated substitution rate - the share of ranked sanctorale feasts served entirely from the Common rising to a later-book majority - is un-run, and its direction is genuinely contestable given the documented late-medieval proliferation of new proper and rhymed offices in Hughes' corpus. No time-resolved common-versus-proper tabulation over dated Cantus sources was located.
- J. Harper, The Forms and Orders of Western Liturgy from the Tenth to the Eighteenth Century (Oxford, 1991)
- A. Hughes, Late Medieval Liturgical Offices: Resources for Electronic Research, 2 vols (Toronto, 1994-1996)
- R.-J. Hesbert, Corpus Antiphonalium Officii, 6 vols (Rome, 1963-1979)
Predictions
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