The Knowledge Navigator is a conceptual tablet computer invented by Apple. A software agent, which behaves like a person, actively helps the user to find and structure information from the web or to remind him on upcoming appointments. Thereby, the user is an ongoing conversation with device. The device's general purpose character allows the user to perform a multitude of tasks, such as interacting with digital document or remote collaborations. Thereby, the agent acts as mediator between all activities.
Elements of the Knowledge Navigator can be found in Apple's Siri. It also provides room for a discussion on how human-like a computer interface should behave.
For watching the 5 min long concepts video follow this link http://www.youtube.com/watch?v=QRH8eimU_20