J K Rowling is an author and Harry Potter is a magician. J K Rowling exists and Harry Potter doesn't. That's four things I've learned in total. In this case existence is very predicaty isn't it? — Cuthbert
So far as the surface grammar goes, sure. “Exists” is after all an English verb, so it’s something English noun phrases can do.
You can imagine someone — many years ago now — who had not heard of Harry Potter coming into the middle of a conversation and asking who Harry Potter is. When we say, “He’s a character in a book by a woman named ‘J. K. Rowling’,” are we saying he doesn’t exist but she does? Or are we saying he exists in one way in she in another? Or are we saying he’s one sort of thing and she another?
Here are some different comparisons. Does Robert Galbraith exist? He’s J. K. Rowling, so he must, right? But he doesn’t exist
as Robert Galbraith. Did J. T. Leroy exist? Not like J. K. Rowling. Someone did write the novels, and someone did appear in public answering to the name “J. T. Leroy” but they weren’t the same person. Does Oobah Butler exist? Oobah Butler wrote the articles that won awards — about a restaurant that didn’t exist but then did — but sometimes the person who showed up to collect the award, answering to “Oobah Butler”, was no more Oobah Butler than Savannah Knoop was J. T. Leroy. Does Erin Hunter exist? Someone writes the
Warriors books, but not always the same person, and none of them are called “Erin Hunter”.
Honestly, I don’t think any of these puzzles are any help in understanding existence, not on their own. They are all — Harry Potter, Robert Galbraith, J. T. Leroy, Oobah Butler and the Shed at Dulwich, Erin Hunter — instances of one sort of pretending or another. Pretending is
very interesting, but I’m not sure it’s the ‘master key’ to understanding existence.
It adds a layer to be analyzed; maybe that helps clarify the layer that was already there, but maybe not. This pencil is not a rocket. Two predicates there and some existence. If I pretend this pencil is a rocket, does that make it clearer in what sense the pencil exists? Or even in what sense it exists
as a pencil but not
as a rocket? Or in what sense no rocket exists where the pencil is? Maybe? If you incline to a ‘the pencil is a mental model’ view, then you kind of want to say everything’s pretend, all we do is pretend, so maybe the cases of obvious pretense are helpful if you can show they’re not different from ‘normal’ cases in any important way.
Pretending a pencil is a rocket is pretending
something is a rocket, and that’s different from holding up your hand in a certain way and saying, “Pretend I’m holding a pencil.” Is that a funny way of saying, “Pretend I’m holding something you (and I, and everyone else) would pretend is a pencil”? (You’ll have to spruce up your vocabulary, because you only can pretend a pencil is a pencil if you mistakenly think it isn’t. Fun!) Even if it is, have you learned anything about the difference between having something in your hand and not?