A video talk given by AlanKay in 1987. About 1h 40 mins long. Available in two parts at http://www.archive.org/details/AlanKeyD1987 and http://www.archive.org/details/AlanKeyD1987_2; now (2007) on Google Video too at http://video.google.com/videoplay?docid=-533537336174204822 . The first part is mostly a history of GraphicalUserInterface, PersonalComputer and ObjectOriented systems ancestral to SmalltalkLanguage, including SketchPad, the OnLineSystem, the GrailSystem, LogoLanguage and others. It features in part TheMotherOfAllDemos. The second half mostly covers some of the educational psychology and philosophy of science behind Kay's work on Smalltalk and his interest in computers as learning tools.