Reading your other comment, I think I sort of agree with it. I can look at a sheet of paper and imagine something on it, and then draw that (if it's simple eno

Reading your other comment, I think I sort of agree with it. I can look at a sheet of paper and imagine something on it, and then draw that (if it's simple enough), but my ability to visualise something precisely enough to draw it rapidly degrades as the image gets more complex. On the other hand, if I'm not intentionally projecting the image onto something, my visual imagination doesn't occupy the same space as my visual field at all. If anything it's "above" or maybe "inside" my head. I can then visualise an almost arbitrarily complex image, but if I try to focus on the details they shift: I'm "seeing" the whole but not the parts.