Coinbase CEO Brian Armstrong's recent prediction turned a $4,000 prediction market into a spectacle, quickly resolving bets on Bitcoin, Ethereum, and Web3. Despite the market's low volume, with the top winner earning just $111, it underscores the potential volatility and influence of high-profile figures in prediction markets. In contrast, the New York City mayoral election market, with up to $22 million in open interest, highlights the increasing seriousness of prediction markets. These markets require substantial capital for price adjustments, as trades are based on collateral-backed pricing curves. Large positions, such as those backing candidate Zoran Mamdani, demonstrate market depth, with polls supporting Mamdani's lead and reflecting genuine voter sentiment rather than manipulation.