Depends on your basic common sense, understanding of REALITY, and your level of reading comprehension. If you only have a 5th-grade level reading comprehension like most adults who work for someone else do, then you would only get a 5th grade level understanding out of what you read, regardless to how many books you would have read or what those books are about. Because, reading a book about metaphysics and quantum physics (for example) isn't going to enhance your reading comprehension skills in order for you to be able to apply what you read in any real world situations. You would just be full of information that you do not understand, maybe be able to repeat and regurgitate, but no idea how to USE it. You may appear to know what you're talking about to idiots, but wouldn't be able to have a dialogue with anybody who actually knows about what you read based on first hand experience. Also, if you don't have an imagination, you wouldn't even see if what you are reading checks out or makes any real world sense, you'd just think everything you read is the truth. Even if what you read 3 days ago contradicts what you've recently read, you would just marry to the last piece of information that you took in. You'd just have surplus information, but no working knowledge of anything.

But there are even mentally retarded people who can memorize whole books and regurgitate the whole book back out. That does not mean they understand any of it or can break it down further in a way that the average person can understand it, because they wouldn't even be seen as mentally retarded if they could.