I only once read a book except for one set: Harry Potter. Throughout my youth, I had an eidetic memory. Whenever I have read a book, I had the ability to recall every detail. Reading the book twice would be an unnecessary redundancy. Unfortunately for the works of J.K. Rowling, I was much older and the memory I formerly savored has abandoned me. It took me six months to read all seven books the first time simply because I am a very busy man and don't have a lot of time to read. Compounding an inability to put the book down with the discipline to do what needs to be done. Three years later, I read them all again; 2009 & 2012.