The thing about the hallucinations is that they are totally convinced that what they are seeing, remembering, experiencing, thinking, etc. is absolutely correct. J's dad called one day and asked how J's business trip to the moon went. He asked a lot of detailed questions about it. Mets and Meds. J just went along with what he was saying and answered the questions to the best of his ability...having never actually gone on a business trip to the moon.
It's kind of funny to think about it now. Back then, it was really sad.