# Artikel Terkait Endogeneity

Polymarket Is Not an All-Powerful "Truth Machine"

Polymarket, a crypto-based betting platform, is often hailed as a "truth machine" for its ability to aggregate crowd wisdom through financial stakes. While it has demonstrated remarkable accuracy in predicting major events like the 2024 U.S. presidential election—outperforming traditional polls—its overall reliability is highly inconsistent. Analysis using the Brier score reveals that its predictive power excels in high-liquidity domains like politics and economics but falls to near-random or worse in categories like sports, culture, and tech. The platform’s growing influence is concerning as its odds are increasingly cited by major media outlets like The Wall Street Journal and CNN, lending them an air of authority. This visibility creates a feedback loop where the odds themselves can influence the outcomes they are meant to predict—a phenomenon known as endogeneity. Moreover, the market is vulnerable to manipulation by well-resourced "whales" with access to exclusive information, such as private polls or even military intelligence, as seen in cases involving bets on geopolitical events. While useful for short-term, high-stakes events, Polymarket’s predictions are often unreliable for the vast majority of its contracts due to low liquidity and wide bid-ask spreads. The danger lies not in its occasional failures, but in the unchecked trust it receives—risking a future where a handful of traders can shape perceived reality through a platform masquerading as an oracle of truth.

marsbitKemarin 11:40