Multiverse vs Universe Desiderata

 Are you familiar with the concept of a Multiverse? A Universe may be just one region of it, and I would think that various kinds of fields may exist that are much larger than a single Universe. If a Universe is initially just a singularity it is contained within some volume. Parmenides and Heraclitus might have liked that kind of inquiry. There are different and scalar kinds of singularities just as some infinities  are greater than others (re; Greg Cantor and trans-finite numbers). If a Universe expands from a singularity that had all of the energy that would eventually become mass it is likely that some universes expand from different sizes of singularity scaled like some black holes are larger than others. You might be aware that mass and 'objects' are nothing more than apparent phenomena occurring in the Higgs field. Two-dimensional particles slow down in the field and pick up an apparence of a third dimension in the direction they travel. I would not stipulate that the true state of Universes are simply singularities or mustard seeds that expand for a while into universes before spending all their energy in thermodynamic processes. There may be more than that, yet I believe a singularity is a real object that is one and comprises an entire universe-in-itself. Some poeple prefer to call a multiverse a 'universe' and that is reasonable I suppose. That just goes to show that none know what a Universe is well enough to set comprehensive boundaries. https://www.youtube.com/watch?v=kixAljyfdqU