To calculate the overall star rating and percentage breakdown by star, we do not 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.
Something wrong with the print of the text. Two pages are okay and the next two pages have overlapped text which makes you dizzy. The entire book has the same issue. I’ve requested for the refund but I like the contents of the book but not sure whether the other copies are all good.