In her new book, anthropologist Carel van Schaik argues that apes and humans evolved side by side, and that our shared evolutionary history has shaped our social behavior.

Van Schaik draws on evidence from primatology, archaeology, and anthropology to support her argument. She shows that apes and humans share a number of social traits, such as cooperation, reciprocity, and altruism. She also argues that our shared evolutionary history has influenced our cognitive abilities, such as language and tool use.

Van Schaik's book is a major contribution to the field of anthropology. It provides a new perspective on human evolution, and it has implications for our understanding of human social behavior.

Here are some of the key points from van Schaik's book:

* Apes and humans share a common ancestor that lived about 6 million years ago.

* Apes and humans evolved in different environments, but they both faced similar challenges, such as predators and competition for food.

* Apes and humans developed a number of social traits that helped them to survive in their environments.

* These social traits include cooperation, reciprocity, and altruism.

* Apes and humans also developed cognitive abilities that helped them to adapt to their environments.

* These cognitive abilities include language and tool use.

* Our shared evolutionary history with apes has shaped our social behavior and our cognitive abilities.

Van Schaik's book is a fascinating exploration of human evolution. It is a must-read for anyone who is interested in the origins of human social behavior.