Everyone who has been working on RAG is aware of how important source control is. Simply directing your agent to fetch keyword matching documents will lead to inaccurate claims.

The reality is that for now it is not possible to leave the human out of research, so I think the best LLM can only help curate sources and synthesize them, but cannot reliably write sound conclusions.

Edit: this is something elicit.com recognized quite early. But even when I was using it, I was wishing I had more control over the space over which the tool was conducting search.