Yes, I understand what you are saying, and certainly on a first pass, this is true. It would be hard for me to know in advance what it is like to be X, whether that is a vampire, parent or a paraplegic.

In the Wikipedia article they make a stronger statement though, that there are experiences that someone else has that "cannot be assessed in advanced."

My argument against that is on a fundamental physics / computer science level.

Alan Turing showed us that once a computer becomes what we now call "Turing Complete", it can run ANY program that can be run by ANY Turing complete computer in our universe. The computers may differ in their speed or memory, but they can all run the same programs.

Your brain, my brain, vampires brains (presumably Turing complete), space aliens brains and the AGIs when then come can all run the same programs, and thus can all have the same experiences. Therefore they can describe the experience they had to us, and we can understand/experience it.

Doesn't mean we can do all this know with our tech, but from what we know it can in principle be done.

Sorry to go so deep and theoretical ... I know probably not what you were expecting.

Good Morning!