A demonstration of working together on screens
Doug Engelbart and his team showed an integrated vision of interactive computing in December 1968.

Context and provenance
On December 9, 1968, Doug Engelbart and colleagues at the Augmentation Research Center presented their work at a computing conference in San Francisco. The demonstration combined interactive text, pointing with a mouse, linked information, and remote collaboration. Its lasting interest comes from the relationship between those capabilities: the machine was presented as part of a system for helping people work with knowledge. The recorded session allows viewers to examine the actual interface and pacing rather than rely only on later legends. Calling it a prediction of the modern computer can obscure its more specific ambition to improve how groups address complicated problems.
Why it matters
Editorial perspective: A coherent demonstration can reveal possibilities that a list of features cannot. Engelbart's example invites us to judge software by the quality of thinking and collaboration it enables, not merely by its visual novelty.