Eternalism (philosophy of time)

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In the philosophy of space and time, eternalism is an ontological view according to which all existence in time is equally real, as opposed to presentism or to the growing block universe theory of time — views according to which at least the future is not the same as any other time. Some forms of eternalism give time a similar ontology to that of space, as a dimension, with different times being as real as different places, with future events "already there" in the same sense other places are already there, and with no objective flow of time. Eternalism 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", as opposed to the view of the world as a three-dimensional space modulated by the passage of time.

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