To Burrhus Frederick Skinner, philosopher and behavioral psychologist from the United States, the “Eureka moment” came to him as it did to the distracted sages in the purest Archimedean style: while gawking at the sky. To be more precious, him while he watched the birds fly. It was the early 1940s, the winds of World War II were rising, and Skinner and much of the rest of the US were pondering how to improve the aim of the missiles with which it attacked Axis targets. They had good planes and bombs, but once they dropped them… From then on their...