Here how the parallel universe work. With one of us do one thing your other self do something different. I going you give a example how the parallel universe work.
Here we has two cereals superman and batman. With one of us pick the superman cereal and other one of us pick the batman cereal.
We could be a superhero in a other parallel universe. There might be thousands of parallel universes or more.
What happen 9/11 never did happen:
The Disney movie tiger cruise will never exist.
Pokemon episodes not be banned
Airport security wil never be tight.
That all the thing I know.