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Why can't I react to chatgpt messages with emoji

Here's an example of ongoing human physiological change: some people have a third artery in their arm. Some don't. ~10% of people born in the 1880s had the third artery, but ~33% of late 1900s babies have one, and a 2025 Australian cadaver study found it in ~43% of upper limbs.

jason from the codex team here, heres a draft on codex maxxing and the primatives i use on a daily basis https://jxnl.github.io/blog/writing/2026/05/10/codex-maxxing/ would love any feedback