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Eternalism is a philosophical theory that time is just another dimension, that future events are "already there", and that there is no objective flow of time. It is sometimes referred to as the "block time" or "block universe" theory due to its description of space-time as an unchanging four-dimensional "block".
Eternalism is the picture of time delivered to us by the special and general theories of relativity.
by Soel January 23, 2015
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