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    Position vector

    [ ]

    Properties

      Human view

      from your angle · a flat image

      A surface receives an image of one dimension fewer. Orbit the scene: the solid never changes, but this does.

      Where you are

      your path through the cube

      The box is the world; the shape in it is the solid. The dashed line is your height.

      The fourth axis

      where you are along w

      how the machine stores it

      Scalar → tensor

      what it can measure from inside

      Relative frame

      what it perceives

      what the fourth axis buys you

      How four dimensions behave

      the sightline, schematically

      Flatlander’s 1D view