Fun article! I don't think it really gives much insight into what spacetime can mean, though, and instead veers off into different territory like multiverses and higher dimensions Spacetime is the product of treating time as part of the same fabric of reality as we do our three dimensions-
- of reality. So there is no treating time and space independently of each other. Relativity then shows us that just like how different bodies can travel through space at different velocities, so too do their clocks tick at different rates, and that all four spacetime dimensions are malleable