Concept
The idea, from relativity, that time is connected to space rather than sitting apart from it.
Spacetime is an established idea in physics: according to Einstein’s theory of relativity, time is woven into the structure of the universe with space. In this archive it is used as background. It does not, by itself, support time travel or the Temporary Timeline Hypothesis.
A speculative philosophical exploration of time travel, branching timelines, reality, information, and the possibility of temporary timelines.
Related: Time travel · Branching timelines · Spacetime
Updated 20 Aug 2026
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