Alternation

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Alternation is a system function or phenomena wherein exocanons and exomemories may be rewritten in a spiritual sense, perceived potentially as an internal-to-the-system reality shift. This phenomenon, while sometimes distressing, is not necessarily a negative thing, and can happen for any number of reasons. Alternations can also affect innerworlds, especially those with a narrative element, whether that is a plot-narrative or a historical or setting narrative. They may be of any scale, but typically affect more than one person, in contrast to rejuvenation.

An important thing to note is that alternations are distinctly different from pseudomemories and non-accurate exomemories. They are actual changes in what was true in a past life or other exocanon, including those that continue to the present inworld. When Alternations happen, the past memories are still recoverable and accessible; they are still true, maybe just in another reality or timeline. When a phenomenon similar to an alternation happens without the pre-existing canons being affected, on a large scale of multiple people or even a world or worlds, this is called a canonbonding.

Temporary Alternations
Temporary alternations can also occur, and may be called modes. They may be perceived as massive, large-scale switches that switch out one group of mostly-identical people and headspaces for another, and can be reversed in a way much like they started. This can be, but is not always, controlled by the system or collection of systems and/or realities.