I would say that there is very little danger of a proof in Lean being incorrect.
There is a serious danger, which has nothing to do with bugs in Lean, which is a known problem for software verification and also applies in math: one must read the conclusions carefully to make sure that the right thing is actually proved.
I read Wilshaw's final conclusions carefully, and she did indeed prove what needed to be proved.
There is a serious danger, which has nothing to do with bugs in Lean, which is a known problem for software verification and also applies in math: one must read the conclusions carefully to make sure that the right thing is actually proved.
I read Wilshaw's final conclusions carefully, and she did indeed prove what needed to be proved.