I think this presents an approach: move closer to the search engine model. In both academic writing an news journalism, factual claims try to cite their sources. And you can see this is an approach that some of the chat systems have directionally gone. We don't want to always pedantically cite a reference for every question. But maybe we should? At least at an architectural level and let the UX decide if it should be displayed.

> in the USA, can illegal immigrants vote According Author X in Book Y which studied this topic in depth: foo answer