Errors are baked in but I don’t agree with the “no viable solution” part. One research team actually was able to identify the “neurons” responsible for hallucinations and adjust the contribution to negligible amounts.
https://www.youtube.com/watch?v=1ONwQzauqkc (Linking a youtuber instead of the actual study because he summarizes it pretty well and the research itself is not geared for laypersons.)
If this was implemented industry wide would it completely solve the problem? I don’t know, but I do know it would be a massive improvement.