Human enhancement: Beyond the machine age

Our previous article proposed a very broad evolving and ecological ``think,'' urging designers to begin considering new types of systems, some to incorporate artificial intelligence, to work for the enhancement of human powers. Here we describe some bases of that think, and attempt to join researches that, as they evolve, could form the ingredients of evolutionary systems. In the broadest sense, we attempt to interpret aspects of today's science and technology within the evolutionary framework, hoping to stimulate a dialogue among all kinds of system designers.