You need a second source of actual truth to verify it, of course, but that's always the case anyway. For coding it's easy, the code works or it doesn't. Lawyers and such have a harder time when they use a LLM trained on "the internet", but one can imagine a LLM trained mostly on actual case histories and law texts doing much better for example.
Oh, wow. That’s a quote that could be written on a lot of figurative gravestones. Also some literal ones; see THERAC-25.
But the tech cycle has been hyping it to all heaven (or hell), and claiming it can simply reproduce your imagination on a whim. Maybe in another decade, but that doesn't stop companies from buying in and trying to replace skilled labor ASAP.
That’s not to disparage the value of a juiced up autocomplete though