This year, none of them. Historically most or all. So that is another caveat. If all future lpe are logic errors I'd start reconsidering the value proposition. I do actually like writing rust though. I don't feel like it slows me down. I also love the simplicity of c vim and gdb, though my first exposure was lattice on the amiga 1000. I wonder if strict typing makes it take fewer tokens to find bugs?