'The book contains everything that makes a linguistics book fascinating to read: an overview of the field, a provocative theory for explaining phonological facts, and numerous contemporary and historical examples from a wide sample of languages to support the new theory … As a whole, I think the book makes an interesting contribution to the field of phonology. The theory presented proposes that much of the complexity of human sound systems is due to historical processes that are set in motion by different kinds of misperception, while the actual learning and representations in the mind/brain are relatively simple and general … Blevins' theory does not propose strict formal rules and algorithms to process and learn sound system, but rather a number of mechanisms, heuristics and ways of looking at linguistic phenomena that can be adapted to particular instances … I consider this to be a practical perspective … all in all, I found this book easier to read and less formal than most books on phonological theory … this book is well worth reading for a new perspective on phonology that conforms to the trend towards more data-driven models of language.' Journal of Linguistics.