Empiriceme · Figure · Paradox

Condorcet Paradox

Majority preferences can cycle even when every individual's preferences are consistent.

A majority may prefer A to B, B to C, and C to A. Condorcet's 1785 discovery is the root of Arrow's theorem and the reason agenda order can determine committee outcomes.

In practice

  • A committee of three prefers option A to B, B to C, and C to A, and whoever sets the agenda decides the outcome.
  • A restaurant group ranks three sites differently depending on which two are compared first, and the chair schedules the comparison that gets the answer.
Standing
Not to be confused with Downs's paradox of voting, which asks why anyone votes at all.
Further reading
Wikipedia
Subject
Law & Politics
Essay
The paradoxes of democracy and the quips of partisans

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