Well, that’s your problem. You are assuming that the author of a book actually has a better idea of what the book is about than some marxist professor with a bunch of letters after his name. After all, if people are just going to listen to the AUTHOR when trying to figure out what the author is saying, why would we even need these English professors anyway. :)
Exactly. It's kind of like this painting by Massaccio.
Check out the guys standing on the left. You think Massaccio had some deep, secret meaning? Or did he just miscount the number of feet in relationship to the number of heads, and since he was working in fresco, decided to not go back and redo to entire thing? I took an art history class where some students wanted to debate this. Uniquely, the professor was more practical.