01 January 1970 24 9K Report

In physics, spacetime mathematical models fuse the three dimensions of space and the one dimension of time into a single four-dimensional continuum.

The question asks whether the existence of a 4D model of the universe is necessary to UNDERSTAND special relativity or electromagnetism, as the Minkowski SR [1]. Not like Einstein SR, that results in inconsistencies that cannot be resolved within the system, and then beset the results.

[1] Minkowski SR uses spacetime to provide a clear pictorial representation for the special theory of relativity. See https://demonstrations.wolfram.com/MinkowskiSpacetime/

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