It is usually unbearably painful to read a book by an author who knows way less than you do, unless the book is a novel.
You are more likely to find three TVs inside a randomly selected house than you are to find a single book that is or was not read to pass an exam, to please God, or to be a better cook.
One of the most common and most dangerous misbeliefs is that it is impossible for someone to be stupid just because they are a doctor or a lawyer.