According to the many worlds theory (there is an infinite number of parallel universes) , Harry Potter and magic really do exist in one of these many universes in existence. This is logical. If there is an infinite number of universes, at least one of them MUST be the one you're searching for, whatever that may be; assuming the many worlds theory is correct. If it is correct; in one of the many universes it CAN NOT be, thus causing us a headache and creating a paradox. Why? Because that would imply, that only that universe actually exists and it's this one, our universe. Hmmm... this makes you think. Did I just prove that the theory is simply wrong? If it is correct, it ends up being wrong. If it is wrong it's OK. ?!