Edward A. Feigenbaum
Some pioneers of Artificial Intelligence dreamed of the super-intelligent computer, whose problem solving performance would rival or exceed human performance. Their dream has been partially realized, for narrow areas of human endeavor, in the programs called expert systems, whose behavior is often at world-class levels of competence. Their dream was partially transformed by programs that give intelligent help to humans with problems (rather than perform super-intelligently). These are called knowledge systems.