The supreme coherence could just be a sign of an exceptional talent for immersing the reader completely in the events of the story. When I first read
LotR, I would feel all weird when the phone would ring or some alarm would go off, bringing me back to my room, my house, my planet, my life. This is good writing, divine inspiration, probably (if you believe in that sort of thing), with its purposes, but was it actually portraying some sort of reality that would be tangible to our physical form? Probably not. If that's the case, I'd have to be seriously worried, because I experienced a similar immersion when I read and re-read
Lolita.
