Thank you for the insightful correction. Regarding the "easy arbitrage within the platform where Yes + NO < 1" mentioned in the article, we need to make some supplementary corrections: Polymarket YES and NO share liquidity; they are not two isolated markets. Instead, they are locked together using a CTF mathematical formula: the Ask for YES is essentially a mirror image of the Bid for NO. No(ask) = 1 - Yes(bid) Therefore, a dual Taker strategy cannot buy Yes + NO < 1. 1. Only a Maker + Taker strategy: Place a limit buy order on the side with higher trading volume (e.g., YES). Set the price at the current best bid price and wait to be filled. Once your YES limit order is filled, immediately buy the corresponding NO at the market price. 2. Maker + Maker Strategy Simultaneously place limit orders on both the YES and NO bids, ensuring that the bid price on both sides, Yes(bid) + No(bid), is less than 1. For example, place a limit order at 0.49 on Yes and 0.49 on No. Both orders will be filled, with a total cost of 0.98 and a profit of 0.02. The risk is: This is a market-making strategy and may involve one-sided risk; the YES order might be filled, but the NO order might not be filled for a long time. The intern is currently in a restricted area for reflection.