An "accident" in a Harvard dorm has drawn the attention of 220,000 people online to a wallet: how did $4.5 million get "stolen" from the betting table? Sometimes, the fiercest hunters often appear in the form of prey. This incident happened during a group meeting of Harvard students. In just 11 seconds of screen sharing, the mentor's gaze swept over a GitHub window in the corner of his screen like a radar. The code repository had a line that read: polymarket-sports-arbitrage (Polymarket sports arbitrage). The mentor didn't expose him on the spot, nor did he report him for "not focusing on his studies." After the meeting, he casually said, "Send me your wallet address." This was the address: Upon clicking in, wow, $4.5 million. This guy lives in a school dorm, rides his bike to class every day, but secretly harvests in the markets of the NFL, Premier League, and Ligue 1 like a ghost. I dug into his trading records, all big bets: - Paris Saint-Germain "not to win," a whopping $824,000; - Buffalo Bills vs. Jaguars, $1.13 million; - Green Bay Packers vs. Chicago Bears, another $780,000. He looks like a betting god, but in reality, he doesn't predict who wins or loses. What he bets on is time. This guy isn't using some futuristic black technology to predict the future, but rather a very simple logic—information asymmetry. Asian bookmakers open their lines early and process information quickly. Their odds changes often happen two to three hours before prediction markets like Polymarket....