Trustworthy behavior requires some information cost, but imperfect information can suffice.

Evidence

Theoretically, any institution that restores incentives for Honest trading by restoring the effectiveness of decentralized enforcement must inform a player when his partner has cheated in the past. If the temptation to Cheat is small and the value of continued trading is high, then this information need not be perfect, as in our model. So it may be possible to induce honest behavior using a less costly information system - one that costs only q < Q to inform a trader adequately well - and correspondingly to increase the traders’ average payoffs from 1 - Q to 1 - 9.’ However, using imperfect information to economize on information costs calls merely for a refinement of the Law Merchant system - not for something fundamentally different. It is not possible to provide correct incentives without incurring some information cost of this kind — PAUL R. MILGRO, PAUL R. MILGRO - THE ROLE OF…, 131

Categorization

  • QUESTION: Worth chasing: when is ‘good enough’ reputation information actually sufficient in real trade networks, and where does it break down?
  • DEFINE: Clarifies the necessary-and-sufficient conditions for decentralized enforcement: it must at minimum signal partner cheating, but need not be perfect.
  • XREF: connects to: Costly information, not infrequent trade, is the core obstacle to honest exchange. — PAUL R. MILGRO, PAUL R. MILGRO - THE ROLE OF…, 13; Information about partners’ past behavior is essential for punishing cheaters. — PAUL R. MILGRO, PAUL R. MILGRO - THE ROLE OF…, 120; A trustworthy reputation can be exploited because it is imperfectly known (+12 more)

Broader Connections