Coincidence of Wants
Updated 2026-08-01
INTRODUCTION
English translation pending.
CORE DEFINITION
An economic concept describing the condition barter requires: two parties must each desire what the other has, at the same time and in acceptable quantities. Because such double coincidences are rare, barter is inefficient and transaction costs are high. The difficulty is the standard explanation for the emergence of money, which acts as a universally acceptable intermediate good so that trades no longer need to match directly.
SCAFFOLDING EFFECT
Reduce cognitive load
- Check the match: verify that each side wants what the other actually offers before proposing an exchange - Introduce a medium: when no direct match exists, find a third good, favor, or credit both sides accept - Use a platform: recognize that matching engines create coincidences that search alone would rarely find
Anchor fast decisions
Direct exchange requires two independent wants to line up simultaneously, and the probability of that falls quickly as the number of participants and goods grows. A generally accepted medium removes the requirement, because each party can trade for the medium and later for what they want. Money therefore exists to reduce the search and waiting costs of matching.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
account_treeGenealogyexpand_more
menu_bookReferencesexpand_more
Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Coincidence_of_wantsverified
PRIVATE NOTES · Only visible to you
SAVED Q&A
ENTRY Q&A · Private saving available
Ask with a clear boundary
thinkingmodels answers from published entry context only.
Your question is sent to thinkingmodels. The answer uses public entry context only.
RELATED MODELS