AI-generated conjecture · a wager, not a finding
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The poems that survive only because Snorri needed them
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Claim (verbatim)
The Poetic Edda's mythological verse is usually read off one book, the Codex Regius (GKS 2365 4to), with a few poems added from AM 748 I a 4to. But Snorri Sturluson's Edda quotes eddic-measure stanzas - in fornyrdislag and ljodahattr, not the court metre - from compositions that have no parallel in those manuscripts at all, and for some of them Snorri's citation is the sole channel by which any of the poem reaches us. Grottasongr, the mill-song of the giantesses, survives only inside the Snorra Edda manuscript tradition; the fragment Snorri labels Heimdalargaldr, the incantation of Heimdallr, survives only as the lines he quotes; other mythological stanzas he cites to prove a kenning or a story have no independent eddic witness. The mechanism is plain: an eddic poem that never entered the one anthology-codex we happen to have, and was not needed by Snorri as a specimen or a proof, simply is not here. Snorra Edda is therefore not only a poetics but a second, partly non-overlapping net over the eddic corpus, and the stanzas caught only in it measure how much mythological verse fell outside the Codex Regius selection. Restated: at least three named eddic-measure compositions are preserved solely within the Snorra Edda manuscript tradition, with no witness in the Codex Regius or AM 748. The canon of Norse myth-poetry is an accident of which anthology survived; Snorri's quotations are the visible edge of what the accident left out.
Prediction clause (verbatim)
Prediction: enumerating the eddic-measure (fornyrdislag / ljodahattr) poems and named fragments quoted in Snorri's Edda, at least three distinct named compositions will be preserved solely within the Snorra Edda manuscript tradition, with no independent witness in the Codex Regius (GKS 2365 4to) or AM 748 I a 4to (primary clause: at least three Snorra-Edda-only eddic compositions; the verdict follows it). A composition counts only if it bears a title or a clear attribution in Snorri's text and its verse appears in no eddic-corpus manuscript; the exact total is expected to be modest and is flagged, so the load-bearing threshold is set at three. The test voids if less than the full mythological matter (Gylfaginning and Skaldskaparmal) of a complete Snorra Edda text is available for the census.
Kill-dataset (verbatim)
Kill: the Skaldic Project edition of Poetry from Treatises on Poetics (SkP vol. III, skaldic.org) and a standard Snorra Edda text (e.g. Faulkes's edition) for the citation inventory, set against the eddic corpus of the Codex Regius (GKS 2365 4to) and AM 748 - count the named eddic-measure compositions present only in the Snorra Edda tradition.
Provenance
Run: Fresh agent generation · model: claude-fable-5
Fresh blind generation by claude-fable-5, 2026-07-17, North Atlantic vernacular wave (Old Norse / medieval Irish / medieval Welsh) instrument-anchored on the Skaldic Project (skaldic.org), CELT (celt.ucc.ie) with eDIL (dil.ie), and the printed censuses (Mac Cana 1980; Bromwich TYP 3rd ed. 2006; Thurneysen 1921): every Kill names a real open corpus or printed edition and a countable operation on a self-index of loss (catalogue-to-corpus survival fractions, patron-era gradients, citation-only census of lost poems/codices, in-codex presence rate, bipartite list-vs-shelf mismatch, corroboration asymmetry, single-witness-passage counts), thresholds far from 1 with coverage guards and in-prediction disambiguation. Deliberately DISJOINT from the owned European ground: w01 no.23 'Prose is the ark' owns the skaldic.org stanza-embedding-in-prose fraction, w07 no.5 owns lausavisur legal distribution, w07 no.26 owns kenning-innovation decay, w07 no.37 owns the Mabinogi-as-legal-casebook coding, w07 no.38 owns the composition-vs-manuscript date-gap (uses skaldic.org only as one of four corpora), w07 no.47 owns bishops'-saga miracle registers, and w07 no.36 owns Irish scribal-marginalia seams - none of my operations reuse these; item 4 (treatise-only drapur) is adjacent to w01 no.23's poetics-treatise secondary clause but counts whole-poem transmission channel, not the metrical-anomaly rate, seam flagged. CONFIDENCE FLAGS (named facts kept out of load-bearing thresholds where soft): Skaldatal poet count '~140' is MODERATE (counts vary); the exact number of Snorra-Edda-only eddic compositions is MODERATE (threshold set at a robust >=3, with Grottasongr and Heimdalargaldr as certain); Mac Cana tale-list total '~200' is MODERATE (threshold set as a fraction, not a count); Cin Dromma Snechtai reconstructed contents are MODERATE (scholarly reconstructions differ - Thurneysen vs Carney/McCone); Bromwich TYP triad count '~90+' and survival rate are MODERATE; Ifor Williams's '12' historical Taliesin poems is the standard figure but approximate; White/Red Book single-witness-passage count '>=20' is MODERATE on exact number, robust in direction. Dropped candidates: (a) a lausavisur-only survival-channel item - dropped as duplicating w01 no.23; (b) a kenning-family type-token item - dropped as duplicating w07 no.26; (c) a Codex Regius great-lacuna prose-recovery item - dropped as leaning on the w01 no.23 prose-ark mechanism; (d) a second glossary hapax-rate item (Sanas Cormaic alone) - merged into the single eDIL fossil-bed item to avoid redundancy; (e) an Irish scribal-marginalia item - dropped as owned by w07 no.36. Item 9 (eDIL glossary-only headwords) is flagged not-yet-built: it needs a citation-source-provenance index over eDIL that the public interface does not expose in bulk.
Novelty / leakage triage
already answered in the literature
The census is already printed in the standard editions' quotation registers. Grottasongr survives only in the Snorra Edda tradition (Codex Regius of the Edda GKS 2367 4to and Codex Trajectinus) and Heimdalargaldr only as Snorri's named quotation - both textbook - and Snorri's named citation of Voluspa in skamma has no witness in GKS 2365 4to or AM 748 I a, its verse otherwise carried only by Flateyjarbok's Hyndluljod, which satisfies the prediction's operative no-Codex-Regius/AM-748 wording and brings the named count to three with no new enumeration. Faulkes's editions of Gylfaginning and Skaldskaparmal index the poems quoted and state which lack independent eddic transmission (including the Alsvinnsmal stanza absent from the extant Alvissmal), and Neckel-Kuhn prints the Snorra-Edda-only pieces among the appended Denkmaeler. What remains is definitional (whether Flateyjarbok counts as an eddic-corpus manuscript), not evidential.
- A. Faulkes (ed.), Snorri Sturluson, Edda: Prologue and Gylfaginning (Oxford, 1982; 2nd ed. London: Viking Society, 2005), introduction and notes
- A. Faulkes (ed.), Snorri Sturluson, Edda: Skaldskaparmal, 2 vols (London: Viking Society, 1998), introduction and indexes of quotations
- G. Neckel and H. Kuhn (eds.), Edda: Die Lieder des Codex Regius nebst verwandten Denkmaelern, 5th ed. (Heidelberg, 1983)
Predictions
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