Churches as compass fossils

Status: Prior

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)

Churches as compass fossils. Post-1200 church orientation errors should trace the geomagnetic declination curve — dating compass adoption in the building trades and refining archaeomagnetism at once. Falsify: orientation databases vs paleo-declination.

Kill-dataset (verbatim)

orientation databases vs paleo-declination.

Provenance

Run: Imported conversation (verbatim harvest) · model: claude-fable-5

Origin: operator conversation with Claude Fable 5 at max effort, conducted 2026-07-03, relayed verbatim by the operator into the shepherd session on 2026-07-04. No ModelRun exists for the original generation (it happened outside the pipeline); this transcript file is the canonical capture. Transcript path: docs/generated/conjecture_harvest_fablemax_20260703.md. Model (operator-attested, not pipeline-recorded): claude-fable-5. Novelty disclaimer (verbatim, load-bearing -- rule 4): "Same caveat as before, doubled: at 100 items across all of archaeology and history, some of these will have cousins in the literature I can't check. What I can guarantee is the format — each links two things not normally linked, and each names the dataset or measurement that would kill it."

Novelty / leakage triage

Leaked (already exists in the literature)

CORRECTED 2026-07-04 after independent verification: the original rationale attached an uncited '570 Danish Romanesque churches, under 5% compass-consistent' statistic that conflated two different studies and pointed the wrong direction for the Danish case. Corrected picture: the compass-orientation hypothesis is explicitly PROPOSED in the literature — Abrahamsen 1992 (Archaeometry 34(2), traced by the verification pass) argues a substantial minority (~25%) of 12th-century Danish churches were probably compass-oriented and uses declination to date them — and explicitly TESTED with negative results elsewhere: Arneitz et al. 2014 (GJI) find church orientations do not track the geomagnetic declination curve, and Ali & Cunich find little evidence of compass alignment in early English/Welsh churches. The connection (church orientation as a compass/declination fossil, usable for dating) is therefore thoroughly pre-existing with regionally CONTESTED results — a live scholarly question, not a new join. Verdict leaked stands; the earlier 'already largely refuted' framing was too strong and is withdrawn.

'Orientation of churches by magnetic compasses?', Geophysical Journal International 198(1) (2014) — Direct test; orientations do not track the declination curve
Ali & Cunich, 'The Orientation of Churches: Some New Evidence' — English/Welsh orientation evidence; little compass-consistency
Abrahamsen 1992, 'Evidence for church orientation by magnetic compass in twelfth-century Denmark', Archaeometry 34(2) — PRO side: ~25% of Danish Romanesque churches probably compass-oriented; added by the post-verification correction — this is the study the defective statistic garbled

Its literature citations feed the frontier as source leads (3 leads below the evidence/publication boundary, not yet reviewed).

Predictions

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