Since I like pie, I’m going to use slices of pie as my rating guide. If I give a book five slices, then you know I would want to eat the entire pie in one sitting – it’ll be THAT good. If I give a book one slice of pie, then I was able to eat the one slice but I didn’t care for it much. If I give a book two slices of pie, then I ate it and liked it OK but it won’t go into my list of favorite pies. Are you getting the idea? A three slice of pie book is one I enjoyed, and a four slice is really good! Might go onto my list of faves but, again, a five slicer is incredibly delectably awesome.