Super strings is a theoretical construct yet to be proved, a hypothesis. It's like your asking what about the existence of harry potter? You can't have knowledge without a knower. Sin anscrit, promeum depends on pramata. The fifth one is simply terrifying. This is the second one only, and we are already embroiled in this. Thir one is even worse, or better, depending on your point of view. Fourth one goes beyond this. And the fifth one is just plain terrifying.