Wow, a hairdryer at Paris airport directly crushed Polymarket's weather forecast market, and it let some guy make a clean profit of $34,000 without risking a dime.

- The data source for Polymarket's Paris temperature betting settlement relies entirely on a sensor set up by Météo France on the edge of Charles de Gaulle Airport's runway — nobody usually manages this thing.
- This guy swept low-probability obscure options at a few cents floor price (for example, when everyone was betting on 18°C, he heavily bet on 22°C), because everyone thought it was impossible.
- Then he directly sneaked up to the temperature sensor, took out a portable heat source (a hairdryer), and blew air around fiercely. The reading instantly spiked, just long enough for the system to record it as that day's "highest temperature."
- A few minutes later, the temperature dropped back to normal, but the market had already settled based on his critical bet, and he cashed out — and this guy exploited bugs twice on April 6 and April 15 until the French meteorological agency noticed something was off and filed a lawsuit.
Real hardcore physics cheat.
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