Medieval merchant institutions existed to overcome the spatial limits of reputation mechanisms.

Evidence

Even if the Law Merchant and related systems were effective underpinnings for local trade, how was information about a trader’s dishonesty in one location transmitted to another? The model in this paper is too simple to handle this problem, but we hope to extend our approach to the institutions that developed during the middle ages to protect against the added problems raised by spatial separation. This includes the merchant gilds in northern Europe, the consulates of the Italian city states, and the organization of alien merchants into colonies (like the Steelyard in medieval London) with local privileges and duties. These institutions can also be understood from the perspective developed in this paper - they are designed to reinforce reputation mechanisms that alone are insufficient to support trade. — PAUL R. MILGRO, PAUL R. MILGRO - THE ROLE OF…, 172

Categorization

  • XREF: Mirrors Milgrom et al.’s private judge analysis in the reader’s reading purpose — merchant gilds and consulates are exactly those third-party enforcement substitutes, now extended to the multi-location problem. — connects to: Pre-state trading communities sustained honesty through reputation systems backed by private judges. — PAUL R. MILGRO, PAUL R. MILGRO - THE ROLE OF…, 1; A Law Merchant institution can sustain honest trade as an equilibrium — PAUL R. MILGRO, PAUL R. MILGRO - THE ROLE OF…, 95; Confinement to one community makes reputational sanctions powerful enough to guarantee repayment (+6 more)
  • QUESTION: How did the Steelyard’s ‘local privileges and duties’ actually structure trust among alien merchants — worth digging into as an analog to Milgrom’s private judges?

Broader Connections