The giant yellow warning, unfortunately, says nothing about "complexity safety". As I note, even though I think the first failure (failure to help port an open source C++ codebase to Rust, simply because the tool itself deals with genomic data) is possibly explicable given their warnings, the refusal to engage with trying to resolve the complexity class of an abstract graph problem really has no reasonable explanation in light of all of the documentation and warnings that Anthropic has written about Fable's "guard rails".