Roger Schank was one of the pioneers in Natural Language Understanding with his work on Conceptual Dependencies. I remember reading, in the late 70s, about hi

Roger Schank was one of the pioneers in Natural Language Understanding with his work on Conceptual Dependencies. I remember reading, in the late 70s, about his SAM (Script Applier Mechanism) and PAM (Plan Applier Mechanism) and be amazed that a computer program could answer questions about natural language text. I still have my copy of his book "Inside Computer Understanding, Five Programs Plus Miniatures" which gave detailed explanations of how they were implemented.