Dyson: In some creation myths, life arises out of the earth; in others, life falls out of the sky. The creation myth of the digital universe entails both metaphors. The hardware came out of the mud of World War II, and the code fell out of abstract mathematical concepts. Computation needs both physical stuff and a logical soul to bring it to life. These were young kids who had just come through World War II, who could repair the electronics on airplanes and get them flying the same day, and von Neumann put them together with mathematical logicians who could imagine a universe created entirely out of 0s and 1s.