Keynesian Beauty Contest

A dynamic in forecasting contests where participants predict what others will predict rather than their true belief, causing private information to be underweighted and forecasts to converge on the public consensus.

Cluster: Mechanism Design

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Articles about Keynesian Beauty Contest

Concepts/Keynesian Beauty Contest

Keynesian Beauty Contest

Mechanism Design

A dynamic in forecasting contests where participants predict what others will predict rather than their true belief, causing private information to be underweighted and forecasts to converge on the public consensus.

Referenced in 2 articles

Articles

Comparative Analysis of Payout Mechanisms in Trepa: From Median Cutoff to Hybrid Consolation Floor
Ilich Blanco·Jul 27, 2026·III·Design

A research report from Andromeda Computer comparing three payout mechanisms for Trepa, a one-minute forecasting game on Solana where participants submit numerical BTC/USD estimates and are rewarded by proximity to the true outcome: (A) the current median-error cutoff with water-filling, (B) a continuous accuracy-proportional distribution with no cutoff, and (C) a hybrid design keeping the cutoff but adding a consolation floor for losers. Multi-agent equilibrium simulations across 540 configurations show no mechanism is universally optimal — the median cutoff yields higher equilibrium private-signal weight on average (0.375 vs 0.297), the continuous design matches or beats it for low risk-aversion agents, and the cutoff dominates for high risk-aversion agents — while a hybrid with a 0.5F consolation floor outperforms both pure designs in 70% of cases, raising private-signal weight while eliminating total-loss trauma and improving Sybil resistance. Recommends a segmented pool strategy, with open-source simulation code for independent verification.

Orthogonal Precision in Trepa: A Tunable Second-Order Oracle for High-Frequency Forecasting
Ilich Blanco, Jong-Chan Chung, Leon Meka·May 13, 2026·III·Design

Analyzes Trepa's high-frequency forecasting contest on Solana and shows its current design (median error cutoff, steep accuracy weights) induces a Keynesian beauty contest equilibrium that underweights private information. Introduces the orthogonal precision multiplier, a mechanism that rewards accurate forecasts decorrelated from the consensus, transforming Trepa into a tunable second-order oracle. Proves equilibrium existence via potential game theory, quantifies information gain through mutual information, and addresses practical vulnerabilities including oracle latency, median instability, and collusion.