Yes, I find there are two kinds of books, those that would work as audio books and those that wouldn't. Those that work as audio books also work well as ePub an

Yes, I find there are two kinds of books, those that would work as audio books and those that wouldn't. Those that work as audio books also work well as ePub and, in fact, are better in ePub form than as PDF, because I have more control over the presentation. Books that wouldn't work very well as audio books usually won't work well as ePub either. Charts, maps, complex typography, etc., that would be lost in audio form is mostly lost by ePub. I don't know how much of that loss is due to to ePub format, how much due to ePub viewer apps, how much due to ePub creation tools, and how much due to creators just not trying very hard, but the combination makes most high-quality textbooks much better as PDF, which "beach literature" is better as ePub.