I am compelled to respond to this..
While I am not a great fan of String Theory; I admit its value and I think it's part of the total picture we must examine, but it is a smaller piece of the puzzle than some believe. I am a friend of Brian Greene and I have met Ed Witten, but I am more in the camp of Abhay Ashtekar, in regards to how the Strings program fits into the overall spectrum of gravitational Physics, at least. I had the pleasure to sit with him, during a few lectures at GR21, and he shows a genuine interest to make use of every advancement, regardless from what camp it comes. I figure there is something behind the fact that regularities appear, when various theories of Quantum Gravity make similar predictions, despite having a completely different theoretical basis.
I admit the 'Math predates universe..' idea is a little hard to swallow, and the idea that it also dictates both the laws of Physics that shape the universe, and that there be an evolution of form and consciousness within that universe makes my premise ambitious indeed. But I think Max Tegmark did not go nearly far enough, in his MUH. Connes is emphatic about features of NCG that have no parallel in conventional Maths. Kainen in correspondence has endorsed my usage, and was flattered to be mentioned with Connes. I had my doubts until recently, as well. But my conversation with Tevian affirmed that these are complications that must be dealt with.
After a discovery I made more than 30 years ago, suggesting the Mandelbrot Set could be a sort of road map for Cosmology; I have tried in vain to disprove this, and instead I have settled on the idea that the universe is maximally mathematical. While trying to understand why the universe would mimic the Mandelbrot Set, or vice versa, I came to understand it is only one piece of the puzzle - which like E8 can tell us a lot about the universe. Seeing how far Garrett Lisi was able to take it, but that more was needed, got me to thinking. But my collaboration with (now departed) Ray Munroe was the clincher for me.
All the Best,
Jonathan