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.
I really think this book is overrated. I was very eager to purchase this book after reading the great reviews on here. However, when I received my copy and I read the book I found it uninspiring. The only positive was the price!