Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent conceptually

It's certainly not complete or perfect, and as a reviewer notes, contains some omissions and errors. However, while a textbook should strive to be as good as possible in those areas, it's no substitute for the primary literature in peer-reviewed journals and shouldn't be viewed as such, and instead should be seen as more of a conceptual introduction, in which I feel it does well. It avoids the tempting parade-of-taxa style, and instead focuses on the important concepts uniting reptiles and to an extent all animals, such as osmoregulation, feeding, locomotion, reproductive strategies, etc.The section dealing with my primary focus, locomotion, is rather sparse, and contains some outdated information, but nothing that can't be corrected with a quick read through the literature. With any luck, my own work will be in the next edition.