How plausibly could the entire multiverse have begun simultaneously? Why? How? My answer: Plausible beyond a reasonable doubt for now because our universe was created at one point and eventually, according to the Second Law of Thermodynamics , it will end(because all systems once warm tend to cool down). More specifically, according to the 2nd Law of Thermodynamics, our universe will cool down until it ends completely. And at the same time, the entire multiverse will end with it. Also, relativity and the multiverse justify each other because if all time is relative then all possibilities happening at once is a fitting explanation. The contradictions of all possibilities happening at once are settled by the explanation of parallel universes. Thus, expanding the concept of identity to all possibilities since the beginning of the multiverse, thereby adjusting the premises enough, thus no contradictions exist.