Emacs users who are familiar with the psychotherapist (found under the Help menu) will be saddened to know that Joesph Weizenbaum is dead.
The ELIZA chatter bot designed by him is the most simple in the class of AI (if it can be called that) but one that seemed to transfix lay users. While not rigorous in Computer Science terms of AI, it is an elegant creation at first glance.
