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  "text": "Claude / Codex also have an easier time writing some components of FA4 thanks to the fast compile time. I got Claude to debug a deadlock when we first implemented 2CTA fwd. It ran autonomously overnight for 6 hours, figured out part of the fix, but then went down a rabbit hole convincing itself that the compiler is broken (so very human 😂). After 6 hours, from Claude’s partial fix, I was able to fix the hang in 10 mins. More details here:\nhttps://t.co/ipGhC9FzET\nI’m hoping FA5 will be written completely by AI",
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