Fits my limited experiences with LLM (as a researcher). Very impressive apparent written language comprehension and written expression. But when it comes to getting to the -best possible answer- (particulary on unresolved questions), the nearly-instant responses (e.g. to questions that one might spend a half-day on without resolution) are seldom satisfactory. Complicated questions take time to explore, and IME an LLM's lack-of-resolution (because of it's inability) is, so far, set aside in favor of confident-sounding (even if completely-wrong) responses.