> Formal verification can work in areas where you have a long time to do > development, or where your problem space is amenable to having a formal > standard (like math problems). In most other cases it just runs completely > opposite to the actual problems that software engineering is trying to solve.

Have you actually tried, or is this just the standard line?

I've heard this from people I've worked with, and when I followed up to ask what kinds of projects they've worked on with Agda, Idris, Coq, Lean, whatever, they had nothing.

I don't have anything either, other than that I've toyed around with some of these systems a little bit. But it seems to me like there's a lot of potential in dependently-typed programming, and we just don't have a lot of experience with it -- which is fine, but that's a very different situation than what seems to be the standard line, "all formal methods take a ton of time and are only viable in a few niche projects" (what are people imagining here? NASA space probes and stacks of binders? really it doesn't seem obvious to me, I'm not trolling).