It's not a long proof (it's not in Lean after all) so easy enough to comb through for a domain expert.
If it was in Lean anyone could verify it instantly. That is the huge advantage of it. Manual math Proof verification labor might be the most limited resource ever.
alt Hacker News
If it was in Lean anyone could verify it instantly. That is the huge advantage of it. Manual math Proof verification labor might be the most limited resource ever.