The existence of a Multiverse is perhaps real, for a whimsical chain of favorable circumstances leading to the emergence of intellect on Earth can only be explained in such a way.
The thought that the Multiverse is real relies on the fact that our Universe is too small to explain many mysterious phenomena, including the astonishing, favorable conditions for the birth of intelligence.
For a world like ours to be possible, it perhaps must have a beginning rather than being beginningless. And a beginning implies the existence of some substance, which, in turn, suggests its eternal existence. Thus, our reality is such that something has always existed and will always exist. If this is logical, then how can one describe the possible characteristics of this substance? One option is that it's an eternally immobile matter, yet unstable, spontaneously and without cause set into motion, or more clearly — space, capable of expanding based on its internal energy and giving rise to Universes similar to ours, a space that, along with its components, we now refer to as the Multiverse.
It's evident that the Universe has no purpose, and it's "morally neutral" towards us. Thus, the concept of a "fine-tuned Universe" should be explained in some way, and the most logical option is the Multiverse.
If the world, the Universe, or the Multiverse, has a beginning, then its substance must exist in the form of a spatially finite physical reality, possessing the necessary potential. Obviously, it is hard to believe that it arose from absolute Nothing. Therefore, it has existed eternally, and at a certain moment, it spontaneously began to self-organize, thereby ending its epoch. Hence the corresponding question: "What can be said about the concept of time during the period of existence of this substance?"
