[bsaul]

At which point do you consider it OK to NOT use typing for a library, or any piece of code that another programmer is going to have to use or maintain ?

I think basically never ( even for throwaway code, because they often end up being reused). So i’d much prefer a language for which static typing is not an afterthought..

[Skinney]

Pretty much always. I mean, as a frontend developer I'm dealing with an untyped api all the time: the backend. We've written pretty huge software using many untyped services, and we're doing fine.