For some of us, our original exposure to AI, or artificial intelligence, goes back to an old program called Eliza. Eliza was a kind of computerized psychiatrist written in the 1960s by Professor Joseph Weizenbaum at the Massachusetts Institute of Technology. Eliza (named after the character in George Bernard Shaw's "Pygmalion") was an exercise in human response and natural language communication with so-called machine intelligence. The version I played with all those years ago was a DOS program running on a TRS-80. Ah, nostalgia. Eliza may not have been a great doctor, but it was a fun and fascinating program, a kind of whimsical promise of the future of AI.