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The plucking model of the papyri
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)
The plucking model of the papyri. Friedman's plucking model of business cycles meets documentary papyrology: aggregate documentary output runs along an administrative-capacity ceiling from which crises pluck it downward, so the depth of a collapse predicts the speed of the subsequent recovery, while the size of a boom predicts nothing about the next bust.
Prediction clause (verbatim)
Binning the ~77k dated documents into 25-year bins over 300 BCE-700 CE and detrending, contraction episodes with a peak-to-trough fall of at least 15% are followed by recoveries whose 50-year rebound rates correlate with trough depth at Spearman rho >= +0.5, while the preceding 50-year growth rate correlates with the coming contraction's depth at |rho| <= 0.2; the asymmetry gap between the two correlations is >= 0.4.
Kill-dataset (verbatim)
Kill: papyri.info documentary catalogue dates (~77k records, in house); a symmetric correlation structure (booms predicting busts as strongly as busts predict recoveries) or an inverted one kills it.
Provenance
Run: Fresh agent generation · model: claude-fable-5
Generated by a fresh Fable-tier instance at maximum effort with generation-first blindness (no repo/web/DB access); titles-only knowledge of existing items, embedded in titles_supplied per the batch-2 lane rule; prompt pre-committed in docs/GOAL_CONJECTURES_BATCH3_20260705.md (b043140). Novelty unverified by construction. titles_supplied stripped to the committed sidecar conjecture_fresh_fablemax_batch3_titles_supplied_20260705.md at import (schema additionalProperties:false; relaxation queued).
Novelty / leakage triage
Adjacent (closely related prior work exists)
CORRECTED 2026-07-05 after independent verification (conjectures_batch3_verification.md, MEDIUM finding): the original rationale attributed arXiv 2306.01552 to 'Kose et al.', dropping the dossier's own 'or similar' hedge; the actual authors are Kohlscheen, Moessner & Rees. Substance unchanged: the plucking asymmetry is tested on multi-century historical output series (Maddison data, six centuries) - same method, neighboring long-run corpus - but no application to documentary/papyrological production counts was located. Bagnall's standard methodological cautions on papyri count series must be engaged by any resolution.
- Kohlscheen, Moessner & Rees, 'The shape of business cycles: a cross-country analysis of Friedman's plucking theory' (arXiv 2306.01552) — Multi-century historical plucking test, GDP data; authorship corrected post-verification
- Bagnall, 'Reading Papyri, Writing Ancient History' (BMCR review) — The discipline's own count-series cautions
Predictions
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