“This concept video shows Apple’s Knowledge Navigator concept video (made in 1987) by Allan Kay and team. This work builds on Kay’s original Dynabook concept developed at Xerox PARC in the early 1970s.” (The Next Web)

“The Knowledge Navigator is a concept described by former Apple Computer CEO John Sculley in his 1987 book, Odyssey. It describes a device that can access a large networked database of hypertext information, and use software agents to assist searching for information. Apple produced several concept videos showcasing the idea. All of them featured a tablet style computer with numerous advanced capabilities, including an excellent text-to-speech system with no hint of “computerese”, a gesture based interface resembling the multitouch interface later used on the iPhone and an equally powerful speech understanding system, allowing the user to converse with the system via an animated “butler” as the software agent.” (Wikipedia).