# Ryan Shea > Essays by Ryan Shea — co-founder of Stacks, former FDA/HHS technology advisor, now building AI research tools for biotech and investing — on AI, biotech, markets, and human progress. Ryan Shea is the creator of AI IQ (aiiq.org), an AI benchmarking platform that scores frontier models on a human IQ scale. He co-founded Stacks, the leading Bitcoin app platform, and previously served as a senior technology advisor at HHS/FDA. Princeton MAE. ## Essays - [Biography](https://www.shea.io/biography.md): The life and career of Ryan Shea — from Princeton engineering to co-founding Stacks, advising HHS/FDA on AI, and building AI research tools for biotech and investing. - [Investments](https://www.shea.io/investments.md): Ryan Shea's featured startup investments, including unicorns like Supabase, Lattice, Mercury, Anchorage, OpenSea, and Filecoin. - [Epistemology](https://www.shea.io/epistemology.md): Notes on knowledge and reason — fallibilism, critical rationalism, and why humanity's potential is unbounded. - [Metaphysics](https://www.shea.io/metaphysics.md): Notes on objective reality, humanity's significance as universal explainers and constructors, and the origins of the universe. - [Ethics](https://www.shea.io/ethics.md): Notes on ethics — curing the world of evils by expanding consciousness and love. A work in progress. ## Other formats - [RSS feed](https://www.shea.io/rss.xml): full-text feed of all essays - [Sitemap](https://www.shea.io/sitemap.xml)