Just watched this Youtube video about a theory that there is a multiverse rather than a universe.
It's amazing to see how some of these theories mentioned are so similar to the D&D cosmology. The baby universes sounds like demiplanes and the Far Realm could be a parent of the current world (imagine the horror!). There are also some good homebrewing ideas to base on this theory of creation.
The implications of a multiverse theory gives us a new perspective on how we should treat religions in D&D. Maybe the gods have this knowledge of the multiverse and that the main motivations of the gods are battling for a much higher stake of cosmological dominance than they would have their clerics and paladins to believe in their faith. Perhaps only the Invokers are let on in this little secret?
This could be one way to look at planar campaigns for those who can't wrap their heads around it.
Tell me what do you think?