Is There a Viable Theory of a Multiverse Multi Verse?

A great deal of fiction is therefore close to a fact somewhere in the multi verse. For instance, there are no histories in which my stories of the transport and mal function are true because they require different laws of physics. Nor are there histories in which the fundamental concents of nature, such as the speed of light or the charge of an electron, are different. There may also be universes in which there are different law of physics, as required in anthropic explanations of fine chinning. But as yet, there's no viable theory for such a multi verse. Pause ther my reflection, this is certainly related to what i said in the last episode. If you recall about these things,