Doyne Farmer and Alletta Belin, 1992 There are many people, including myself, who are quite queasy about the consequences of this technology for the future. K. Eric Drexler, 1992 Introduction Artificial Evolution in the Twenty-first Century The notion that the world around us is continuously evolving is a platitude; we rarely grasp its full implications. We do not ordinarily think, for example, of an epidemic disease changing its character as the epidemic spreads. Nor do we think of evolution in plants and animals as occurring in a matter of days or weeks, though it does. And we do not ordinarily imagine the green wor
