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My go to activity to pass time with my trading friends is the market making game. It works with two players, gets more fun with a larger group, and is a playful way to sharpen trading intuition. It has also become the canonical ritual in my circle for deciding who picks up bill at dinner. propose a market One player suggests a question whose answer can be verified. This has gotten easier as chatGPT has become a better oracle. For example, How old is our waitress? auction for the market maker seat Players take turns quoting the size of a confidence interval. The proposer is trying to capture the waitress’s true age while keeping his interval as wide as possible. A first quote might be 20 years wide, meaning the player believes that he can predict the waitress’s age within a range of 20 years. Someone else may then bid 15 wide because he thinks he can predict her age within 15 years. Each new bid must narrow the previous interval by at least 10% to prevent pennying. Bidding continues unt

My go to activity to pass time with my trading friends is the market making game. It works with two players, gets more fun with a larger group, and is a playful way to sharpen trading intuition. It has also become the canonical ritual in my circle for deciding who picks up bill at dinner. propose a market One player suggests a question whose answer can be verified. This has gotten easier as chatGPT has become a better oracle. For example, How old is our waitress? auction for the market maker seat Players take turns quoting the size of a confidence interval. The proposer is trying to…

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