welcome to 1982 when they first said those EXACT THINGS. That story was exactly the same as everything else that has ever been said about parralel universes, they havent come up with a new way of proving thye exist, they've simply said what they always do "you know, science is trickyyyyy." They havent proved it any more now than they had when the idea was first thought up, even if parralel universes did exist, so what? it doesnt help us at all because they are parralel to us, meaning you cant go to another universe, because they dont exist on the same physical plain as you, but one parallel to it. It's just like the coin from their example, if you're on the heads side of the coin, the tails side is parallel to you, you're both a part of the whole coin, but the two sides never meet up, they're jsut parallel to each other