They want to prove out that theory that alternate universes exist on a separate frequencies with a small intentional experiment. Without getting too religious, it goes back to the notion that god knows every outcome from every choice we make (yes we do have choice, there is no "gods plan"). So every time we make a choice, believe it or not, our universe skews off (think back to the future 2).
So if that theory proves out, then that means every scenario exists in a different dimension. There's a universe where we're rich, a universe where we're homeless. There's a universe where perhaps we're an athlete, a universe where we're in a wheelchair our entire lives because of some birth defect. With that notion, as many multi-verses where we're a man, there should be an equal amount of universes where the egg in our mother's womb decided to develop into a female. Imagine if the LHC fires up, a black hole opens up, and one of the scientists sees himself as a female scientist working at the LHC in another universe?
