It's more like something else, but it's a "something else" I have some limited experience with.
We've made contact with many planets, but in a handful of cases, we've also made contact with a variant of our own planet from another reality. Sometimes the realities are branching, like where a binary choice caused one reality to split into two (say, a world where the Archduke Franz Ferdinand was assassinated, and one where he wasn't). Sometimes they're parallel, meaning the realities are so different and so far apart that they don't interact with each other at all. And sometimes they're entangled, meaning they interact and affect each other in any number of ways.
I think most of us are from different realities that would have been parallel, except that someone decided to throw us all in the same drawer like a bunch of old charging cables.
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We've made contact with many planets, but in a handful of cases, we've also made contact with a variant of our own planet from another reality. Sometimes the realities are branching, like where a binary choice caused one reality to split into two (say, a world where the Archduke Franz Ferdinand was assassinated, and one where he wasn't). Sometimes they're parallel, meaning the realities are so different and so far apart that they don't interact with each other at all. And sometimes they're entangled, meaning they interact and affect each other in any number of ways.
I think most of us are from different realities that would have been parallel, except that someone decided to throw us all in the same drawer like a bunch of old charging cables.