In the video, we can see the first computer demo. This is so cool. Before this, the computer is a giant thing, it’s confusing and ugly. But Douglas Engelbart made everything change. The mouse can control all elements on the page. Also the collaborative editing had been introduced. It looks like the prototype of Google doc, where everyone can edit on this document-like thing.
I think the coolest thing is video conferencing. This allows people to share their screens, which greatly promotes the way people communicate with each other.