What underlying technology governed the responses of both ELIZA and PARRY?
Answer
If-then logic and string manipulation
Both ELIZA and PARRY were fundamentally constrained by the technology available at the time, relying heavily on rule-based programming. Their responses were triggered when the system recognized a specific phrase structure or keyword in the input. If the structure matched a predefined condition, the system would execute the corresponding stored response pattern—a classic if-then logic sequence coupled with basic string processing, rather than utilizing modern semantic understanding or complex algorithmic prediction.

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