Whether or not space-time exists should not be considered controversial or even conceptually difficult once we are clear on the meanings of “space-time,” “events,” and “instants.” Believing in the existence of space-time is no more viable than holding onto the old notion of a celestial sphere: both are observer-centered models that are powerful and convenient for describing the world, but neither represents reality itself.
Still, from the perspectives of modern physics, philosophy, popular science communication, and even science fiction, stating that space-time does not exist remains a provocative claim.
But what would it mean for a world where everything that has ever happened or will happen somehow “exists” now as part of an interwoven fabric?
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