This book is a critique of the experiments of recent years that tried to teach language to apes. The achievements of these animals are compared with the natural development of language, both spoken and signed forms, in children. It is argued that the apes in these studies acquired merely crude simulations of language rather than language itself and that there is no good evidence that apes can acquire a language. A survey of the communication systems of apes and monkeys in nature finds that these systems differ from language in profound ways--language is a uniquely human attribute.

This book provides a non-technical introduction to Unified Growth Theory (UGT), that is, the study of history as a succession of economic regimes. It first focuses on the canonical example of regime shift: the transition from the regime of Malthusian stagnation to the modern regime of sustained economic growth. Then, it broadens the perspectives on historical change by examining other regime shifts involving institutional and environmental forces. This book fills a gap in the market by providing a more accessible treatment of UGT and invites readers to explore ideas of continuity and...