>Reading a book for a second time years after the first can unearth a completely different story, like revisiting a city you haven’t visited for years, but in the case of reading only one of you has changed.

So true! I most felt this with Neal Stephenson's Seveneves. The first time through, I was interested and engaged in the space procedural part but the wacky Stephenson bit at the end lost me. The second time I read, I was constantly dreading the events of the first few acts, but strongly engaged in the high concept section at the end.