Close your eyes. Recall a building you looked at recently. Is the picture as detailed as reality? If not, how much less?
Here's a survey I've been meaning to do:
What do you see when you remember or imagine things? How detailed are the pictures? Is there color? Is it three-dimensional?
Not long ago I had a "lucid dream", meaning I knew I was dreaming. But unlike usual, I didn't wake up soon, I kept dreaming. And more so, the dream was fantastically detailed and real-appearing visually. In fact I particularly noticed that everything I was seeing was at least as detailed and three-dimensional as what I see with my eyes when I'm "awake". It was amazing. (It was one of those things that proved to me that I can't prove the World is not a dream. But that's another story.)
The point is, though, that while I remember the experience, when I remember the dream, I don't see it very detailed. And it's the same for anything I remember, or for anything I imagine: even though I'm very visual, whatever I see in my mind is sketchy. In fact it's so sketchy that "conceptual" is probably a more precise word. Not clear at all.
So I am wondering what other people's experience is? Yours?