There are some indications in the CMB map that our universe was one of 'many' that could have formed and undergone subsequent inflation. This would seem probable from a non-uniqueness point of view. So I wondered if thinking had progressed on basic issues taking this into account. Such as; would such universes merge or remain separate, and what form would separation take. Would the laws be the same; it has been suggested that the masses and energies of our protons and electrons etc could be different, and still form a 'workable' quantum mechanical system. Would QM account for the probability of say an electron 'appearing' in one of theses other universes? Not looking for answers to these issues, not enough evidence to get that far, but can the Maths cope with multiple universes, from the QM standpoint?