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Futarchy’s fundamental flaw — the market — the blog post

2 days ago
  • Futarchy uses prediction markets to guide decisions, but it fails when markets reflect correlation rather than causation.
  • A key flaw emerges when one market is canceled after the other resolves, distorting incentives and prices.
  • In an experimental market with two coins (A with 60% heads, B with uncertain bias averaging 59%), coin B's price rose to $0.90 despite a lower true probability, confirming the bias.
  • Derivative markets did not fix the issue; prices remained misaligned with causal beliefs.
  • The experiment demonstrates that futarchy can select worse options due to strategic betting and uncertainty resolution timing.
  • The flaw persists even in realistic setups where information is gradually revealed before market close.