Book on Lean proof assistant hits #2 on WSJ's weekly reading list
stevenstrogatz · x · 2026-10-04
The Proof in the Code by Kenneth Hartnett landed at #2 on the Wall Street Journal's list of 11 books read this week. Per WSJ: "The program called Lean was built to detect bugs in Microsoft's products. It ended up revolutionizing mathematics." The book traces how the formal proof assistant evolved from a software engineering tool into mathematical research infrastructure.
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