The genetic code appeared on Earth with the first cells. The codes of cultural evolution arrived almost four billion years later. These are the only codes that
This book is the study of all codes of life with the standard methods of science. The genetic code and the codes of culture have been known for a long time and
"Outstanding . . . a wide-ranging invitation to think through the moral ramifications of our eating habits." —The New Yorker One of the New York Times Book Re