AI-generated conjecture · a wager, not a finding
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Cited to death, then dropped
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Claim (verbatim)
Halakhot Gedolot, the great geonic code of talmudic law (ninth century, associated with Simeon Kayyara), was for a time the central halakhic compendium of the Jewish world and a primary conduit of the Babylonian academies' rulings into the West. Then it was superseded twice over - by the Rif's leaner digest and by Maimonides' comprehensive code - and its role as a living, cited authority decayed: the later a halakhist writes, the less he needs Halakhot Gedolot directly, because its content has been absorbed, reorganized and replaced by the works that quote it. Mechanism: a reference work survives as long as it is the best available map, and once a better map is drawn from it the original is consulted less, cited less, and copied less, sliding from authority to historical curiosity. The decay is measurable as a citation gradient over the generations of rishonim. Prediction restated: attributed citations of Halakhot Gedolot, counted per author-corpus across Sefaria's open rishonim, fall sharply from the pre-Maimonidean generations to the post-Maimonidean ones - the citation half-life of a digested book, visible as a decline factor far from one.
Prediction clause (verbatim)
Prediction: counting attributed citations of Halakhot Gedolot (the formula "הלכות גדולות" and the abbreviation בה"ג) per author-corpus across Sefaria's open rishonim, the mean citation-rate in a pre-Maimonidean cohort (for example the Rif and the Rashi-school works) will exceed the mean rate in a post-Maimonidean cohort (for example the Tur and the Beit Yosef) by at least a factor of three - primary clause: the >= 3x pre-Maimonidean-to-post-Maimonidean citation-rate decline; the verdict follows it. Citation rate is normalized per 10,000 words of each corpus; the test voids for coverage if fewer than 100 total Halakhot Gedolot citations are recovered.
Kill-dataset (verbatim)
Kill: Sefaria's open rishonim corpus (with the Bar-Ilan Responsa Project as the deeper instrument) - string-match the Halakhot Gedolot citation formulae, normalize per corpus length, and compare a pre-Maimonidean against a post-Maimonidean author cohort dated from standard rabbinic chronology.
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, Jewish text-culture wave instrument-anchored on the open Sefaria corpus and its cross-reference link data, with standard critical editions as controls: every kill names a real corpus and a countable operation (coverage maps, citation-formula counts, link-orphan shares, digest-fraction, recension divergence, citation-decay), thresholds far from 1 with explicit coverage guards distinguishing what Sefaria holds from what existed. Ground is CITATION-GEOMETRIC and disjoint from the 2026-07-10 w19 Jewish wave, which was material-culture-of-loss (colophons, parchment, genizah, masora, binding fragments): no material-culture re-posing here. Two candidates were dropped after a grep of all fresh packets: a Tosafot-density-by-tractate survival item (pre-empted by w02-philosophy #18, which already correlates per-folio Tosafot density with manuscript survival), and a piyyut liturgy-vs-anthology survival item (pre-empted by w01-literature #28 'Liturgy out-survives fame', keyed to Davidson's Thesaurus). The Mishneh Torah item here tests EXTERNAL source-attribution erasure vs the Tur (loss of source-geometry), deliberately distinct from minds-w02 #25, which tests the code's INTERNAL recall/promise cross-references. Two items are marked Kill (not yet built) where the deciding corpus (Kohut's Arukh apparatus; Lewin's parallel Iggeret recensions) is not yet digitized.
Novelty / leakage triage
anticipated in the literature — this exact test has never been run
Halakhot Gedolot's early centrality and its supersession by the Rif and Maimonides are standard (Brody's chapter on the geonic codes; Danzig's Mavo; the Hildesheimer editions' introductions), so the qualitative decay story is in print. But no citation gradient has ever been computed, and the specific >= 3x per-10,000-word decline is genuinely uncertain in the cohorts chosen: the post-Maimonidean anchors (Tur, Beit Yosef) are dense citing codes that name BHG constantly - the Beit Yosef adjudicates its rulings throughout - so the predicted decline may well fail on exactly this instrument. Materials in print, arithmetic un-run, outcome contestable: the defining adjacent case.
- R. Brody, The Geonim of Babylonia and the Shaping of Medieval Jewish Culture (Yale UP, 1998), chapter on Halakhot Gedolot
- N. Danzig, Mavo le-Sefer Halakhot Pesuqot (New York/Jerusalem: JTS, 1993)
- E. Hildesheimer (ed.), Halakhot Gedolot (Jerusalem: Mekitze Nirdamim, 1971-1987), introductions
Predictions
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