In my garage I have an imaginary dragon. It's not real. Its just imaginary. It's a dragon made entirely of the good thoughts and happy feelings of people who like to think there's a dragon out there, somewhere, watching over them. But dragons aren't real, and neither is the dragon in my garage.
I tell you this, and you tell me that the dragon isn't imaginary. You insist it's a real dragon that is really in my garage. So I take you to my garage to show you that it's only imaginary.
We both immediately notice that the dragon is visible. You tell me that you can see it, and ask if I can see it. I can see it. And it's interesting that I'm seeing the dragon, and certainly counts for something.