4 sources healthy · latest episode 9 Nov 2026
descriptive claim

The speaker says that during a period of Lean 4 development, Leo was frustrated with users generally and particularly with mathematical users.

Unresolved speaker · Mathematics Just Changed Forever — Kevin Hartnett · 26 Oct 2026

In their words

The transcript segments this claim was taken from

“Oh, so, so, uh, so if, if you read the book, there was a, a period where Leo was just kind of frustrated with, with, uh, well really all users but especially the mathematical users.”
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