"studying hero myths from around the world, Campbell noticed a distinct pattern. It didn’t matter where or when a particular myth was created; the world’s hero stories were all strikingly similar to one another."
Not just hero stories, but ALL stories. The hero is simply one archetype. The process applies to ensembles too.
More info / buy the 2000+ stage Hero's Journey And Transformation Through A New World / State at http://www.clickok.co.uk/index4.html or http://www.kalbashir.com