Comment by encyclopedism

Hallucinations can never be fixed. LLM's 'hallucinate' because that is literally what they can ONLY do, provide some output given some input. The output is measured and judged by a human who then classifies it as 'correct' or 'incorrect'. In the later case it seems to be labelled as a 'hallucination' as if it did something wrong. It did nothing wrong and worked exactly as it was programmed to do.