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The envelope gradient
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)
Old Babylonian contracts were often sealed inside clay envelopes that repeated the whole text — an expensive tamper-proofing device familiar to every museum visitor. Transaction-cost economics holds that costly verification is bought when trust is scarce: strangers get notarized, neighbours get a handshake. The conjecture joins them: envelope use was not scribal fashion or regional habit but a trust price, rising with the social distance between the parties — different cities, no shared witnesses, no prior dealings — and falling with repeat business. If it holds, the patchy survival of envelopes stops being noise and becomes a quantitative map of anonymity and familiarity in the Old Babylonian economy, the earliest measurable trust gradient in history.
Prediction clause (verbatim)
In Old Babylonian loan and sale contracts, the probability of an envelope will be significantly higher for first-time counterparty pairs than for pairs attested together in at least two prior documents, with a gap of at least 15 percentage points after controlling for site, date, and transaction type in a logistic regression. Primary clause, which decides the verdict: the repeat-counterparty coefficient is negative and significant at p<0.01. Secondary clause: inter-city party pairs show higher envelope rates than intra-city pairs.
Kill-dataset (verbatim)
Archibab (envelope status, parties, witnesses, and dates for Old Babylonian contracts), supplemented by CDLI envelope records.
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
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Provenance
Run: Fresh agent generation · model: claude-fable-5
Composed blind by claude-fable-5 from internal knowledge only, with zero tool calls, and emitted directly as a single JSON text message.
Novelty / leakage triage
no prior formulation located (search dated 2026-07-10)
Searched clay-envelope function and transaction-cost readings of OB contracts. Envelopes as tamper-proofing/trust devices are standard, and finance-history treatments exist, but no study modeling envelope probability as a function of counterparty familiarity or social distance was located (search dated 2026-07-10).
Predictions
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