I don't think there is one universe either. There are definitely different universes. But it doesn't seem likely to be proven anytime soon. So it remains in theory. But if this theory is proven, everything from the laws of physics to the rules of ethics can change. Probably something like this happens when even our very existence is forgotten. Things may be very different for future generations, if not for us.

Although the theory of multiverses is accepted by many experts, it is still, of course, a theory. However, when we think about the reality of such a theory, it's not that you shudder. Because we are in the galaxy we exist in and in a universe that includes it. It's really weird that there are a few of us. Who knows, maybe we'll go there after we die.

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