I was going to wait to post this and use it to get famous, but someone else will just publish it instead and take credit.

My refutation of the Multiverse Theory:
If an infinite number of alternative realities or universes exist where all alternative possibilities in 5 dimensions supposedly occur if Schrödinger's wave function doesn't collapse but all mathematical possibilities play out in alternate universes, then what about the universe where evil humans invaded our universe from their universe, conquered the world and exterminated all life on Earth, in the 1990's. Why didn't that happen in the 90's? If an infinite number, or even a finite but extremely large amount of universes exist where all mathematical possibilities play out, why didn't that happen?

We can conclude two things from this since it didn't happen: #1 interuniverse travel is impossible or #2 The Many Worlds interpretation(Multiverse Theory) is not true and this is the only universe that exist.

https://youtu.be/vvsAx6pCBng [Open]

There you go, a concise refutation of the Many Worlds interpretation of Quantum Mechanics.