This book explains a well-known puzzle that helped catalyze the establishment of generative syntax: how children tease apart the different syntactic structures associated with sentences like John is easy/eager to please. The answer lies in animacy: taking the premise that subjects are animate, the book argues that children can exploit the occurrence of an inanimate subject as a cue to a non-canonical structure, in which that subject is displaced (the book is easy/*eager to read). The author uses evidence from a range of linguistic subfields, including syntactic theory, typology, language processing, conceptual development, language acquisition, and computational modeling, exposing readers to these different kinds of data in an accessible way. e well-known hypotheses of Syntactic and Semantic Bootstrapping, resulting in greater coverage of th