Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness.
Wish the stories could come out quicker. Maybe get some of those dunderheads at the Oxford pubs to help out. Once I got used to how the stories were written, these stories have been a joy read, like talking to an old friend or sitting in your best chair next to the fire!