We live in a 3D world. However, since the beginning, computer space has been dominated by 2D. It's almost as if the guys who created the original interfaces arbitrarily decided: "Hard drives and computer screens are paper." They built a computer-space environment based on file folders, not unlike the card catalog files in precomputer libraries. Yet nobody likes to navigate to things-all that hunting and clicking through artificially imposed hierarchies and trees. We know, from web search, that our data exists in a rich, linked, multidimensional hive, and we want to get at it from any angle. I'm sure you can recall a scene from any number of "futuristic" films (Jurassic Park, Minority Report, Iron Man, etc.) in which a character navigates through a 3D holographic display of information, tossing irrelevant content out of his or her way and digging into the good stuff using a glove with medusa wires, a gaming joystick, or his or her bare hands.
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