True, but that doesn’t make the imagined scenario any less real if the imagined scenario effected anything. Say, for example, I just imagined you drinking coke, and became thirsty. I decide to get some grape juice. I don’t know whether or not you ever drank coke but the imagined scenario has affected my reality, and thus is real (regardless of whether you objectively drank a coke, a beer, or not at all).What isn't necessarily a part of reality? The actualization of an imagined scenario.
OK, we can say that. What we can’t do is pretend this imaginary Coke drinking isn’t real or isn’t a part of reality.So we should say that there is a difference between imaginary Coke drinking and real Coke drinking.
OK but say you’re in this situation, except person 2 never shows up. Were you engaged in coke drinking if you never find out you weren’t engaged in coke drinking and continue to live your life believing you were engaged in coke drinking?Now imagine that well I'm engaged in what I think to be real Coke drinking, someone tells me that I am not drinking Coke. So I go to show them the Coke, and I find out that I wasn't drinking Coke at all. How could this be? Perhaps I woke up groggy from a dream of drinking Coke, and it was real enough to make me think I had a Coke nearby. In any case, I would say that I was not engaged in real Coke drinking at all, because the experience didn't act in enough ways like a real Coke drinking experience to qualify.
But they really see a pink elephant. That they see a pink elephant is a part of reality. And while it might be suspect if no one else reacts to said pink elephant, perhaps everyone is playing an elaborate April Fools prank. Or everyone has become accustomed to the pink elephant. Or everyone else is so convinced that pink elephants don’t exist that they ignore one even when it is right in front of them. Or the pink elephant is quite literally the elephant in the room that no one talks about. The fact is we can’t ever really know right or wrong, we can only talk about useful or not useful.It's not a matter of the perception being false (how can a perception be false?). It's the interpretation that is false. If someone sees what looks like a pink elephant and proclaims it to be a pink elephant, then they can very well be misinterpreting reality.
Still, the best question useful or not useful rather than real or not real. The concept, without the words behind it, has saved me quite a bit of trouble… “OK, I believe that there is a serial killer there, but since no one else is reacting as though there was, they’ll all just think I’m stupid, so I’ll shut up.†It almost always turns out to be the right action when I go back and check later.People who have hallucinations tend to be able to realize later that they were not seeing what they thought they were seeing, or experiencing what they thought they were experiencing. This doesn't mean that such hallucinations don't seem to be completely real when they happen, but--like dreams--can be seen for what they are by a later accumulation of evidence.
On the other hand, if I'm alone and frightened, I'm willing to sit and talk to someone who no one else would acknowledge exists but I think exists at that moment if that has the ability to get me to put drugs in my mouth or stop panicking. It's useful.