But our Universe isn’t made up merely of three space dimensions, but of four spacetime dimensions. After all, the shortest distance between two spacetime events isn’t a straight line any longer. Normally, we measure the distance between two points by the distance traveled, such as that along ... [+] the line connecting points A and B. But we don’t have four dimensions of space; we have three dimensions of space and one dimension of time. Increasing your motion through space decreased your motion through time, and increasing your motion through time decreased your motion through space.

Source: Forbes August 12, 2020 06:11 UTC