I might argue that it may fix problems that aren't fixable otherwise.
My experience in this area is very old, but I found that the biggest benefit
of formal methods was not so much the proof but the flaws discovered and
fixed on the way to the proof.
> In conclusion, it seems an awful effort to
The obvious difference is "parts". In manufacturing, things are assembled
from well-known, well-specified, tested parts. Hmmm
> ... If you look at other things
> that people build, like oil refineries, or commercial aircraft, we can
> deal with complexity much more effectively than we can w
