There are two possibilities that, under current scientific facts, are equally probable: either (a) there has always been countless universes, and thus there has never been a beginning, and thus no need of any first cause, uncaused or not, or (b) the multiverse originated in a single event that began a process of multiple universe generation, of which our universe is just one of many that sprouted from that originating event. If (a) then the need for an uncaused first cause is thereby erased. If (b) it is not erased but fulfilled, as the originating event will itself be the uncaused first cause.
The only question is what properties that uncaused first cause had, and the fewer properties, the simpler the explanation, and as long as all the evidence is explained equally well, the simplest explanation is always the most probable. The fewest properties any event can have is the complete absence of all defining properties whatsoever. If there was ever a point when absolutely nothing existed, then that means no laws or rules existed that would limit what would then happen. If there are no laws or rules that will limit what would then happen, then anything can happen. In fact, every possible thing that can happen would be equally probable, since for any event to be more probable than any other would require some law or rule making it so, but in a complete nothingness there are no laws or rules.
That such a nothingness would remain nothingness is only one of many possible things that can happen, and since by definition nothingness contains no laws or rules determining what will happen, the possibility that this nothingness would remain nothingness is no more probable than anything else that might happen. Since there is an infinite number of possible things that can happen (since no laws or rules limit what can happen), this means the probability that nothingness would remain nothingness is infinity to one against, which is mathematically as near to zero as makes all odds. It is therefore absolutely certain that if there was ever absolutely nothing, something would immediately happen, and nothing would in fact become something, because in the absence of all rules and laws, this is the most probable outcome, in fact as near to 100% certain as makes all odds.
Of all the things that can happen, by far most possibilities consist of vast and diverse multiverses. For example, that only one lone universe would arise from this unstable nothingness is just one out of an infinite number of possibilities, and therefore has virtually zero probability. Even if there are an infinite number of lone universes that could arise, there is also an infinite number of pairs of universes (in fact, infinity squared), an infinite number of triplets of universes (in fact, infinity cubed), and so on, all the way up to an infinite number of infinities of universes (in fact, infinity to the power of infinity). The vast majority of all these possibilities consist of vast quantities (if not actual infinities) of universes, which is a multiverse.
Therefore, if ever there was absolutely nothing, it would be unstable by definition, and the probability is extremely high that this unstable nothingness would produce a vast multiverse of one form or another. As absolutely nothing is the simplest possible uncaused cause imaginable, it is by far the most probable uncaused cause, and it would result almost inevitably in a multiverse. Therefore, if there was nothing, then most probably there would be a multiverse, and if there is a multiverse and it has an uncaused cause, then most probably that cause was absolutely nothing.
Multiverse Theory
