They successfully get 60% of the things correct, but they leave so much out for no reason. So many thing happen that is completely unexplained and/or vary vastly different from the books for no reason. The first episode was surprisingly good, but every episode since has severe flaws and leaves out so many details that it's infuriating watching the work of a great author deviated from, while not adding any benefit. The source material would actually be a pretty easy adaptation, but for some reason the writers, editors and producers cannot get anything right.