> it's strikingly obvious when you ask deeper questions about a book and they can only respond with basic one sentences you could infer from the synopsis.
When I watch movies with some people they will be "I think I didn't see this one before". And then half way in, they are like "oh I remember this, I did watch it after all". Some people are just forgetful.
They might just not remember. I used to read the same book many times and still have fun, because when I fully immersed myself and enjoyed it, I often ended up not remember a lot. I still enjoyed the experience of reading.
I believe the above has been amplified due to the false dichotomy of information technology vs good ol' books.