I did that exact thing with many books. Mostly to impress my friends. It's funny how no one in the family seems to really believe PhotoReading works.
Even during the first month of learning the system, I spent 6 minutes with a book, and somehow was able to answer every question by guessing 80% of it, and I answered it right.
If you combine hints and clues to the conscious, the subconscious will often be eager to fill in the gaps in a lot of ways.
