Wonderful Life: The Burgess Shale and the Nature of History

Gould uses the Burgess Shale — a 505-million-year-old fossil deposit in British Columbia preserving soft-bodied organisms of astonishing diversity — to argue that contingency, not inevitable progress, governs the history of life. The Cambrian explosion produced body plans so varied that many have no living descendants, not because they were inferior but because survival depends on accident as much as adaptation. Gould's famous thought experiment — "replay the tape of life, and the outcome would be entirely different" — challenges the narrative that evolution is a ladder leading to humans. The book also tells the story of Charles Walcott, who discovered the fossils in 1909 but misclassified them to fit the prevailing paradigm, and of the later researchers who recognised what Walcott had missed. It is simultaneously a work of palaeontology, philosophy of science, and institutional history, and its argument about the role of contingency extends naturally to any domain where people mistake survival for superiority.