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.
This looked like such a promising book and one look through it showed it contains a lot of valuable information and insight, but the lack of space between the lines of text makes it difficult to read and I had to return it. Disappointed.