To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
The book is great, but the copy I received had a printing error, a chapter from the previous volume inserted and therefore missing pages at the very culmination of the plot. Very disappointing and had to order new copy.