Multiple universes is a theory. It is impossible for there to be confirmation of another universe. These universes are to have erupted spontaneously out of nothing. No information can pass across nothing. No information can be exchanged between universes existing in nothingness. If matter, energy or information can pass between two "universes", then they are actually parts of the same universe, subject to the same spatial and time dimensions, the same physical laws and fundamental structure. Therefore they can not explain the fundamental nature of our universe to be so compatible with the evolution of sentient consciousness.