It's great, though. The keyboard layout was the main thing restricting me from getting a framework. I was just looking at slimbooks yesterday, in fact, since they offer more keyboard layouts.

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.