So much of our technology revolves around intelligence, technology in support of intellectual activities; the goal of engineering artificial intelligence, and the need for intelligence in the user interface and yet, so much of everyday life is really about affection and emotion. Analysts from several different disciplines have turned their attention to affect and emotion and its place in the interstices between people and machines. The perspectives of four illustrious pioneers in the understanding and creation of affection and emotion in the user interface are presented.
