Vitalik Buterin warns of the dangerous scenario in the prediction market

Vitalik Buterin warns about the potential risks if prediction markets become “romanticized” into hyperstition — meaning they not only reflect the likelihood of an event but also have enough influence to turn that prediction into reality. According to the Ethereum co-founder, in this scenario, the market would lose its core value of seeking and fairly reflecting the truth.

Buterin believes that when players with significant financial power invest heavily in a specific outcome, the probability on the market can be driven to extremely high levels, even close to 99%. This can create psychological and behavioral effects in real life, causing stakeholders to act based on market signals, thereby unintentionally “programming” the future to match the predicted outcome.

He highlights two major issues. First is the risk of whale monopolization, where a small group of large investors can shape the narrative and create hyperstition for their own benefit. Second is the so-called “killer problem,” where prediction markets might inadvertently encourage harmful behaviors, as malicious actors place large bets and then seek to cause negative outcomes. According to Buterin, if prediction markets follow this path, they will lose fairness and become tools for manipulating reality, rather than tools for measuring societal expectations.