That can be a problem with hallucinations. They can seem real. My most
recent experience with hallucinations was in the ICU after heart
surgery and I was heavily medicated for pain. There were gargoyles on
the wall and I tried an experiment as I tried to figure out if my eyes
were open or closed. I thought it seemed quite rational to assume that I
would see few gargoyles if they were closed. It made sense at the time.
It may or may not have been the same day I told the nurse about the
white mouse that had escaped from the lab and was running in and out of
the air duct on the ceiling. I could see him as plain as day and
pointed him out to her, but she decided that maybe they should but back
on my pain medication.