Jonathan Singer's witty, erudite book is a celebration of rationality and an urgent call to make use of intelligence and reason to better cope with human problems. Emphasizing the importance of rationality's greatest achievement, modern science, Singer--one of the foremost biologists of our era--argues that for the first time in several million years humanity has at its disposal the tools for an objective understanding of the external world. Singer demonstrates that, today more than ever, the fullest exercise of rationality is essential if humanity is to rein in a runaway technology and...