Hi, I saw a documentary of what string is and how small it is. But, what's the point of knowing that there are strings in every atom. I don't know the quantitative ratio of it but the documentary says that if an atom was the size of a solar system, a string would a tree on earth. No experiments can be done to test these, so what's the point of studying them? As I am typing this up, my brain is giving me a signal that this is a dumb question , but what's the point?