HARLIE is one of the most realistic visions of advanced Artificial Intelligence encountered in the arts, on a par with HAL 9000. However, HARLIE is a more endearing version of HAL; while seemingly more humane than HAL in his actions and responses, he definitely has a different, often even inhumane way of approaching problems, and has an agenda of his own to follow. HARLIE's story revolves around his relationship with David Auberson, the psychologist who is responsible for guiding HARLIE from childhood into adulthood. It is also the story of HARLIE's fight against being turned off, and the philosophical question whether or not HARLIE is human.