I don't know, but all humans make errors, but if some humans are known to hallucinate, you don't let them do important things unsupervised. So error sounds actually less problematic to me.
This is more or less how I see the LLM output, but as a path finding exercise over next-token probability graphs. This is (i.e.) why they are trained to use phrases like "wait but" or "actually", these words even out the probability of different paths, giving them their ability to "consider" different solutions.