[Question] Paper on qualitative types or degrees of knowledge, with examples from medicine?

There’s a paper (or essay or something similar) I can remember reading that I’ve been struggling to find for some time now. It described different qualitative types of knowledge and used various examples from medicine, e.g. the difference between various kinds of trauma or emergency care where we know exactly what a problem is and can fix it (almost) exactly/​completely versus something like obesity where we basically don’t know (at least in the sense of commonly shared knowledge) much of anything about what exactly the problem even is.

Any help in uncovering the paper would be greatly appreciated!

No answers.