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 very well researched and written in an engaging style that really draws you into the narrative. It details the personalities and events behind id software and the landmark games they made that really drove PC gaming on to heights never seen before, and also the clashes of those geniuses as they found out what effects too much success too quickly can have on you. A real page turned that I could not put down.