User blog comment:Yankovic270/Alternate Universes: Do They Exist Or Not?/@comment-1483327-20100813015604

I agree. The events that create the other universes need to be human-created. And the term "superhero" also includes the people who put on a mask and fight crime, despite having no superpowers at all. A world with a marked increase of vigilantism isn't out of the realm of possibility.