author : George DysonGeorge Dyson, a dual citizen of the United States and Canada, is an independent historian of technology whose subjects have included the development (and redevelopment) of the Aleut kayak (Baidarka, 1986), the evolution of artificial intelligence (Darwin Among the Machines, 1997), a path not taken into space (Project Orion, 2002), and the transition from numbers that mean things to numbers that do things in the aftermath of World War II (Turing’s Cathedral, 2012).