Why is the “Fourth Dimensional” representation of a cube a tesseract? If time is a dimension shouldn’t the higher dimensional representation of an object be it’s worldline/timeline?
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When people refer to a tesseract they’re talking about a hypercube, the extension of a cube into four *spatial* dimensions, in the same way that a cube is the extension of a square into three spatial dimensions. The fourth dimension being referred to isn’t time.
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