The Mother of All Demos A Lecture by Douglas Engelbart en.wikipedia.org A name retroactively applied to a landmark computer demonstration, presented by Douglas Engelbart on December 9, 1968. The 90-minute presentation essentially demonstrated almost all the fundamental elements of modern personal computing: windows, hypertext, graphics, efficient navigation and command input, video conferencing, the computer mouse, word processing, dynamic file linking, revision control, and a collaborative real-time editor Menus, Metaphors and Materials: Milestones of User Interface Design interfacestechnology
Whereof one cannot speak My propositions are elucidatory in this way: he who understands me finally recognizes them as senseless, when he has climbed out through them, on them, over them. (He must, so to speak, throw away the ladder, after he has climbed up on it.) He must surmount these propositions; then he sees the world rightly. Whereof one cannot speak, thereof one must be silent. Ludwig Wittgenstein, Tractatus Logico-Philosophicus What can be put into words meaning