Earth Prime

Earth Prime is the origin and template for all fictional universes. Fictional universes are defined solely by their hypothetical or identified distinctive contents that Earth Prime does not have a direct corollary for. It is the universe that you exist in, in which you read this page right now.

No fictional universe so far has been able to directly access Earth Prime in a confirmed way. The system seems to hold that if a fictional universe attempts to access Earth Prime, it can only successfully access another fictional universe that has fewer differences from Earth Prime.

SIs such as Xavier Bronze's on Earth XSI-1 come from pseudo-Prime Earths in this way. With some exceptions, different attempted incursions on Earth Prime will access separate pseudo-Prime Earths. That means multiple SIs are unlikely to originate from the same universe.

As the template, Earth Prime is unlikely to contain esoteric aspects that aren't reliably present in a majority of fictional universes. Further speculation into the nature of Earth Prime's contents are difficult to verify, due to the fact that we exist subjectively within it, instead of constructing or observing it objectively like we would a fictional universe.

See Also:
Universe, on Wikipedia