Back to our picture of time and space; think of a cube of space, where every point in that cube has an imaginary string of time flowing through [it] (like small little ticker-tapes). This is kind of the same picture as we think of when we learn vector calculus – flow lines through a volume.
Perhaps time moves differently for all points in the space, like a flow that might move through a pipe. The rate of time flow may be slightly different for each point in a space, or perhaps there is an average rate that time has over a space, but for each point it varies…perhaps time moves transversely like sound waves…[or it could] also wave longitudinally, like light waves.
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