Dr. Sbaitso

Eliza is a DOS program that simulates a typed conversation with a psychotherapist. It operates by prompting the user to expand upon topics they have already mentioned, creating the illusion of a responsive dialogue. The interaction is structured so the computer asks questions based on the user's previous responses.

Its design, which intentionally mimicked a Rogerian therapist, was influential in early discussions about artificial intelligence. The program's ability to sometimes pass the Turing test and be mistaken for a human demonstrated the potential for simulated conversation. This approach to natural language interaction later informed the development of text parser interfaces in early adventure games.

As a piece of software, it inverts the typical dynamic seen in later interactive characters. Here, the computer actively questions the player, rather than the player interrogating a character. The variety in each session stems from the different personal revelations users are led to provide, often while under the temporary belief they are communicating with a person.