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.
Content is ok, but the book quality is very bad. The binding is almost broken and about to come off. The book has scratches on the cover, and it looks very old. Looks like it was in very tight packing which folded it as well.