Space and time are not fundamental aspects of the universe from "summary" of Reality Is Not What It Seems by Carlo Rovelli
The idea that space and time are not fundamental aspects of the universe challenges our most basic intuitions about the nature of reality. We are accustomed to thinking of space as the stage on which the events of the universe unfold, and time as the universal clock that measures the passage of these events. But according to modern physics, this familiar picture is not quite accurate. In the framework of general relativity, developed by Albert Einstein in the early twentieth century, space and time are not absolute entities, but rather flexible and dynamic aspects of the universe. They are intimately intertwined in what physicists call spacetime, a four-dimensional continuum in which the fabric of reality is woven. In this view, space and time are not fixed and immutable, but rather malleable and subject to change. The theory of general relativity revolutionized our understanding of gravity, showing how it arises from the curvature of spacetime caused by the presence of matter and energy. This insight led to a profound shift in our conception of the universe, revealing a dy...
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