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 arrived fine, the cover Jacket was glued to the cardboard the book was in! Glued so it could not be fixed. It was going to be a gift, but now, I’m just keeping it, no point waiting around with all the return nonsense. I had to buy another gift for the person, NOT a book from Amazon, however!