Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
This book is an easy read about a historian’s approach to the evidence for the existence of a person called Jesus in the first century. It compares the historical evidence for Jesus with that for other people in history, including Alexander the Great, and shows in overview why historians believe he was real. It’s an interesting and informative book.