Causality Continuum

The Causality Continuum is the phenomenon of a chain of predestinated events.

Prophecies are a variant of the Causality Continuum.

Another subject within the Causality Continuum is time traveling; when one travels back in time, it is possible to do something that alters the future. In a case where the future would be altered it is possible for the time-traveler to already have experienced the change while being in the past.

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Wikipedia