Whilst that is probably true, it is not necessarily true. Nothing fundamentally prevents GPT from synthesizing new and novel insights. If a novel insight is trivial to notice when combining knowledge from 4 disciplines, it could be neigh impossible for humans to find, and obvious to GPT.

Or perhaps the insight isn't trivial but follows analagous reasoning from some other obscure result. Or perhaps a million other things.

I don't mean to claim GPT will do this. I just mean to point out it can't be fully excluded GPT is able to.