Traditional sports betting allows insiders to exploit static odds. In a liquid prediction market, a large bet based on inside information immediately moves the odds, reflecting that knowledge in the price and eliminating the arbitrage opportunity for the insider.

The rise of accessible prediction markets creates perverse incentives for individuals to profit from insider information or by directly manipulating events. Examples range from a special ops soldier betting on a mission to someone using a hairdryer to spike a temperature sensor, illustrating a new, "democratized" form of sleaze.

While prediction markets offer pure, insightful data that can outperform traditional polling, they have a dark side. High stakes can incentivize bettors to shift from predicting events to actively influencing them, including threatening journalists to alter their reporting and swing a market in their favor.

A prediction market's value isn't its empirical track record but its resistance to being easily gamed. If a market were biased by a specific group, savvy investors could profit by betting against that bias. The absence of such easy arbitrage is the strongest signal of its efficiency in aggregating conventional wisdom.

A more significant danger than insider trading is that individuals in power could actively manipulate real-world outcomes to ensure their bets on a prediction market pay out. This moves beyond leveraging information to actively corrupting decision-making for financial gain, akin to throwing a game in sports.

Rather than killing polling, prediction markets make it better. By creating a tradeable market around outcomes, they introduce a strong financial incentive for pollsters and campaigns to be accurate. This shifts focus from commissioning polls that confirm biases to producing data that can actually win trades, improving information quality.

While framed as a "wisdom of the crowds" tool, prediction markets can be easily manipulated. Wealthy individuals or campaigns can place large bets to create a perception of momentum or inevitability, effectively using the market as a propaganda vehicle to influence public opinion rather than simply reflect it.

Platforms like Polymarket effectively financialize all information. This creates opportunities for arbitrage based on publicly available, but not widely known, data. For example, a person won a large bet on the length of the Super Bowl national anthem by simply timing the rehearsals outside the stadium in the days prior.

Kalshi's growth is fueled by rising public distrust in traditional news and polarized social media. While the incentive for most media is clickbait, prediction markets provide a powerful alternative: a financial structure where accuracy is the sole goal, creating a more reliable source of information for users.