I think the difference is that instead of deferring to an expert's opinion, you can interact with a knowledge machine which can explore the topic in and on your

I think the difference is that instead of deferring to an expert's opinion, you can interact with a knowledge machine which can explore the topic in and on your terms, answer your questions about it, respond to your points and concerns about those responses, etc. It's a fundamentally different kind of knowledge generation than reading an expert opinion - it's branching, self-directed, and responsive.