Young feasts sing in unison

Status: Anticipated · untested

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).

This is a proposed connection between two domains, generated by a language model. It is not an article and not evidence: it sits below the evidence/publication boundary. A quantitative prediction and a named kill-dataset are attached (when registered) so the claim stays falsifiable rather than merely evocative.

Claim (verbatim)

Everyone assumes old chant is stable and new chant is loose, because errors accumulate with copying. The reverse should hold across medieval Europe: chants for late, centrally promulgated feasts like Corpus Christi (1264) should be nearly identical everywhere, while the ancient Advent core should splinter into regional dialects. The mechanism is diffusion topology, not age: a papally mandated feast radiates from one exemplar in a generation, whereas eighth-century chants spent five hundred years diverging in separate choir traditions before anyone compared notes. If this holds, melodic uniformity measures how a feast spread, not how well singers behaved, and 'corruption over time' stops being a usable dating principle for chant.

Prediction clause (verbatim)

Primary clause: in Cantus Index melodic concordances, the cross-source variant rate (differing pitches per chant across at least ten geographically dispersed sources) for the Corpus Christi office is no more than one third of the rate for the core Advent antiphons. Secondary: Trinity and Visitation offices pattern with Corpus Christi, not with the old layer.

Kill-dataset (verbatim)

Cantus Index melody concordances and full CANTUS source inventories for the Corpus Christi office (Sacerdos in aeternum) versus the Advent antiphon core.

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. Kills and priors are credited here, by name, as they come in.

In the atlas

This conjecture is bridged, as an L1 lead, onto these Inferpedia subject pages.

Provenance

Run: Fresh agent generation · model: claude-fable-5

This packet was produced in a single blind Write from model-internal knowledge only, with no repository reads, web access, database queries, or any tool call other than this Write.

Novelty / leakage triage

anticipated in the literature — this exact test has never been run

Uniform exemplar-driven transmission of the late Corpus Christi office is documented qualitatively (Dominican exemplars; Carthusian adoption studies note only small melodic variation), but no one has run the variant-rate comparison against the Advent core or proposed melodic uniformity as a diffusion-topology measure replacing age-based dating.

H. Grazio et al., 'Dealing with change: the Carthusians and Corpus Christi', Plainsong & Medieval Music

Predictions

No prediction registered yet.

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