Thanks for both replies above. Here's another thing I'd like to get your thoughts on.
It appears that PR is a technique for rapidly processing and retaining information that is relevant to you, since your PURPOSE essentially defines your scouting scope from a book. In other words, PR is effective and efficient fishing tool for qualitative information, but it may not be a tool for accurately, precisely and quantitatively processing and retrieving information. What if your purpose is just to memorize or photo-capture (in its true sense) the whole thing (like a play of Shakespeare) for whatever reason (e.g. the beauty of the language)? Would PR help and how in that regard? Is there any study or experience in that area?
Many good books, especially great works in literature and philosophy, can not to be digested right away. We often do not know what exactly we want to get out of them. For example, if we just need a basic idea about Plato's book, we could just quickly read a review or commentary instead of reading the original one. We read the original to understand his reasoning, analysis, among others. We often don't know exactly what we may or wish to get--as that PURPOSE changes as our understanding about it improves. However, we do want to read and permanently store that information in our brain so that we don't have to go back to read it over and again. What would PR help us in accomplishing that?
