I experienced this phenomenon starkly when I started a book, and felt it was filled with obvious remarks and little novelty. It took me 50 pages to realize I had already read it.
This is the primary downside of reading without a bookmark. Any book I've read on public transportation, I would guess on average each page gets read about twice (with some chapter intros reaching double-digits). It's hard to figure out if it's really something you've read before, or if it's just a very logical continuation of what you read yesterday. I also feel obligated to one-up you. One time in high school Engli…
I saw the book at my friends house and thought it looked interesting. After borrowing and reading 50 pages I realized I had it in my shelf.