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About - Joe Carlsmith's Substack

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Philosophy, futurism, and other topics. Click to read Joe Carlsmith's Substack, a Substack publication with thousands of subscribers.

I’m Joe Carlsmith. I work at Anthropic on the constitution for Claude, the company's AI. I'm also a visiting lecturer at Yale Law School during spring term of 2026. Prior to this, I was a senior advisor at Coefficient Giving, where I focused on existential risk from advanced artificial intelligence. I also write independently about various topics in philosophy and futurism, and I have a doctorate in philosophy from the University of Oxford. Much of my work is about trying to help us orient wisely towards humanity’s long-term future. I see this work as fitting a loose logical structure, with…

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