Instruct: Classify a given review into positive or negative sentiment.
Query: Remarkably bad genealogy

In my title I almost said "remarkably bad genealogical scholarship," but anyone familiar with the previous editions of this book will recognise that it would be inaccurate to associate the word "scholarship" with this book.All of the serious flaws present in the earlier editions remain in this book: rampant spelling and transcription errors, erroneous and misleading bibliographical entries, and the presentation of purely conjectural genealogical theories as though they were a part of "the complete known ancestry of John of Gaunt."These kinds of embarassing errors are found repeatedly on every single page of this book.Due to the great amount of inaccuracy and genealogical nonsense, anyone seriously interested in royal medieval genealogy would do well to steer clear of this book.