The big bang theory does not actually deal with the "beginning" of the universe. It only describes the universe when it was very, very small, and got bigger very, very fast. The self-organization of the universe - how stars, planets, and life came about by itself - is an interesting field of study. It makes sense to me, looking at how life has managed to become so much more complex from single-celled organisms, and even just how human society manages to become more complex over time.
I don't have anything to back this up, but I think we're in an era where we are less able to directly observe and measure things than has been the case historically. Because of this we end up with a surplus of ideas, which we can only try to make sense of with math. I agree that the idea of 10 or 11 dimensions shouldn't be presented as fact, we're still a ways from being able to prove that
As a resident of Lincoln Nebraska, I'll take Tig's word for it.