"Periodically a book is published which offers such an original perspective that it seems we have never really understood what we thought we knew: this is likely that kind of book for many readers. The cross‐linguistic study of complex morphological systems is establishing the crucial status of words and paradigms in providing insights about natural language organization. With characteristically careful rigor and clarity Stump and Finkel introduce a new way of analyzing and typologizing inflectional systems. While developing their model would have been enough, the book takes on an even greater dimension as they explicitly explore ways of synthesizing their perspective with recent competing models. Stump and Finkel cause us to pause and consider a new role for morphology in modern linguistic theory. And I suspect that the field will improve, when we do." --Farrell Ackerman, Professor of Linguistics, UC San Diego Director, Human Development Program, UC San Diego