descriptive claim
Leo initially aimed to build Lean on a simple formal foundation.
Unresolved speaker · Mathematics Just Changed Forever — Kevin Hartnett · 26 Oct 2026
In their words
The transcript segments this claim was taken from
“Um, and so it was a more weighty and complicated and difficult framework. Um, and when Leo first started the project, he was aiming for simplicity, you know, a very simple, formal, you know, foundation.”23:10Report a misattribution
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