especially compared to existing 129 pages proof by human

A human can cite previous published results. I am sure a lot of this development was formalising the prerequisites.

Wouldn’t a lot already be in leans mathlib?

AI is hopeless at using existing code, it likes to append only.

A published formalization is code. I would not think humans have any edge when it comes to citing previously published results.

> I am sure a lot of this development was formalising the prerequisites

How can you be so sure its not result of inefficiency?

Oh, I am quite sure there are inefficiencies! Just that they are not entirely inefficiencies.

I have used Fable for formalisation and it will, unless I catch it, reprove results it previously had proven, inline, in other results.

Insert meme with 200 pages needed to prove 1+1=2 rigurously

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