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The hypothetical or theoretical tools that would allow us to perceive, interact with, or manipulate higher-dimensional spaces, assuming such spaces exist and we could afford the equipment. This includes tesseract projectors (which just look like weird cubes), 4D printers (which would print objects that change over time, so... just regular 3D printers with extra steps), and "dimensional goggles" that promise to show you the 5th dimension but mostly just show you static. The most accessible N-dimensional technology remains the metaphor, which lets us talk about things we can't possibly understand.
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