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.
This book seemed not thorough and inclusive enough for me. Some of the choices included were not instructive in that they seemed not to break new ground. The book's title seems like it will an examination of the more cutting edge developments in the sphere of Brazilian architecture. For me, it said little new. Even the cover seems to convey that this book takes the easy way out. It's an unfocused, pretty book.