Several Polymarket users have expressed dissatisfaction with the platform's refusal to classify recent US military actions in Venezuela as an "invasion" and to settle related prediction market bets accordingly. The crux of the dispute is that Polymarket argues the actions do not meet its definition of "invasion" and therefore refuses to pay bettors who wagered on a US invasion of Venezuela. The article points out that some users believe the US military's entry into Venezuela, the arrest of the president and his spouse, and the declaration of US "takeover" of related affairs should constitute an invasion, but Polymarket states in its description that the market only refers to "military actions aimed at establishing control" and that the actions in question do not meet its criteria. The platform has not responded to media inquiries. The commentary further points out that the gray areas in prediction markets regarding event definition, question formulation, and outcome determination can introduce uncertainty and risk to participants, especially when dealing with major geopolitical or military events. The article argues that this controversy highlights the problem of centralized interpretation of prediction market rules and limited transparency, and has also sparked discussions among some users regarding fairness and potential conflicts of interest. (MarketWatch)