DENDRAL marked a major DENDRAL marked a major “paradigm shift paradigm shift” in AI: a in AI: ashift from general general-purpose, knowledge purpose, knowledge-sparse weak sparse weakmethods to domain-specific, knowledge specific, knowledge-intensive intensive techniques.Lederberg into a computer program to make it Lederberg into a computer program to make itperform at a human expert level. Such programs were perform at a human expert level. Such programs were