| | I'm not sure that Objectivism covers the possibility of four-dimensional space, where time becomes a dimension along with the three spacial dimensions of height, width, and depth. At least, I haven't read any Objectivist literature concerning the nature of time; the philosophy appears to treat time as part of existence and a commodity to be used as purposefully and passionately as possible, as we are mortal and our time is limited.
Now, I am a self-taught programmer and not a mathematician, so please do not assume that I am speaking ex cathedra. =^..^=
If you've any knowledge of Cartesian graphing, you might remember that space can be mathematically represented as a grid with three axes -- x, y, and z -- which correspond to width, height, and depth respectively. A point in space can be represented by a set of (x, y, z) coordinates.
Now, to represent time as well as space mathematically, we'd need a fourth axis -- a t axis -- that corresponds to time. We could then claim that a given object not only has a location in space but a series of locations in time as well.
On the other hand, I might be mistaken in extrapolating high-school maths to account for 4D space. However, I think it makes sense as an abstraction.
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