AI-generated conjecture · below the evidence/publication boundary

The flat curve of Assur

Bronze Age Mesopotamia Levant & Near East

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)

The flat curve of Assur. The term structure of interest rates — the yield curve — normally slopes upward, because lenders demand compensation for longer exposure to risk. This conjecture says Old Assyrian merchant finance in the Kanesh trade refused that logic: interest in the Kultepe loan tablets was customary rather than market-clearing, a conventional rate near 30% per year applied regardless of how long the money was out, so annualized rates should be flat in maturity, with loan term explaining essentially none of the variation. Risk did not go unpriced; it migrated into contract design instead, so the odds of a punitive default-penalty clause should at least double with each doubling of loan term. The signature is a flat yield curve paired with a steeply term-sensitive penalty structure — the price of money fixed by custom, the risk of default priced in clauses. A conventional upward-sloping yield curve in the tablets kills it.

Prediction clause (verbatim)

Across >= 150 Kultepe loan tablets stating both rate and term, the regression of annualized interest on log maturity has a slope within +/-2 percentage points of zero (against a customary level near 30% per year) with R^2 <= 0.05, while the odds of a punitive default clause at least double per doubling of loan term; a conventional upward-sloping yield curve kills it.

Kill-dataset (verbatim)

Kill: the Old Assyrian Text Project loan corpus in the Larsen and Veenhof editions.

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

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

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

The Veenhof-school Old Assyrian credit literature richly documents the factual substrate (30-60% customary rates, monthly compounding, default escalation) and one Belleten article on interest-payment procedures is likely close (abstract-only in the dossier); the rate-vs-maturity yield-curve regression was not located as performed.

Michel, 'The Old Assyrian Trade in the Light of Recent Kültepe Archives' — The credit-practice scholarship
'Interest payment procedures applied by Assyrian merchants', Belleten 69/255 (2005) — Closest single article; abstract-only

Predictions

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