https://telefonicatech.com/en/blog/eliza-reanimated-lets-you-chat-with-a-chatgpt-from-1965
"In the 1960s, at MIT laboratories, computer scientist Joseph Weizenbaum developed the program ELIZA , which is now considered the first chatbot. Weizenbaum created ELIZA using the MAD-SLIP programming language, marking one of the earliest attempts to simulate human conversation.
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The ELIZA Reanimated restoration project began with the recovery of the original source code from Weizenbaum’s personal archives at MIT. This material included the DOCTOR script , an early version of the MAD-SLIP code, and several supporting functions written in obsolete programming languages such as MAD and FAP."