Some schizophrenics do see people who are not there, and their illness tends to be more severe. I rarely have any visual hallucinations (and when I do it is very brief, such as briefly seeing people looking in my window out of the corner of my eye, and then turning my head to look at them, and there’s no one there, that kind of thing). I mostly have auditory hallucinations-- voices, the sound of footsteps, the sound of scratching and clawing on the walls, the sound of something bumping up against a door, the sound of doors creaking open in the pitch black darkness of night, that sort of thing. But mostly voices, and they were reduced in intensity with meds, but never fully eliminated.
That probably has a lot to do with why he laughs at the voices. He was witty, they’re witty.
I hope so, too. It helped me a lot.