Bobsican
He/Him- 21,182
- 6,094
It has risen to some attention quite recently that there's one more thing to add as a potential criteria for some spatial structure in a verse to qualify as a universe for our purposes:
This most likely would go below the "These are notes that the worlds are indeed universes; while they don't need all of these, at least one of them should indicate this." part, and according to @DarkDragonMedeus , this was accepted around 2019 and 2020. In any case this appears to just have been forgotten and it'd be appropiate to evaluate once more to ensure it's still a good idea and all.
- If there is shown to be a collection of multiple alternate worlds/dimensions that are either stated to be parallel or existing next to each other and/or there are visual depictions resembling each of those worlds/dimensions in bubbles, and most importantly, at least one of those individual worlds/dimension has the other requirements to consider them universal in nature, then the conclusion is to consider all of those individual worlds/dimensions universes and that the entire collection is a multiverse.