Back in 1987, Apple produced a concept video describing a product known as Knowledge Navigator. Knowledge Navigator is a computer app with bow-tied personal assistant that would let you interact with your device using your voice and natural language. You can check messages, find appointments, share documents and more.
Sound familiar? It should as it's surprisingly similar to Siri, the natural language personal assistant Apple introduced at its iPhone 4S event yesterday. Not only is Knowledge Navigator like Siri, the scenario in the concept video also takes place in September
