This volume investigates the mechanisms and motivations behind linguistic change across the domains of morphology, syntax, and typology. D. Gary Miller, a scholar in historical linguistics, challenges the pursuit of a single grand unification theory for language evolution. He argues that such reductionist models fail to account for the diverse and complex nature of natural language shifts, proposing instead a multifaceted approach to understanding how grammars and lexicons transform over time.

Experts recognize this work as a rigorous examination of the complexities inherent in diachronic linguistics. Readers frequently note the academic density of the prose, which serves as a specialized resource for advanced students and researchers in the field.