Hi Jonathan,
It is a pleasure to meet you in FQXi Essay Contest. Once again, you made an excellent work through a very interesting and enjoyable Essay. Here are some comments:
1) Your idea that Nature has been shaped by all of the applicable Maths since the beginning of time is intriguing. In this way Nature seems a unique sentient being.
2) I am fascinated by fractals. I see that you were a pioneer of fractal cosmology. Is it a coincidence that your original work on this issue is dated 1987, i.e. the same year that Luciano Pietronero and his team attempted to to model the distribution of galaxies with a fractal pattern?
3) I am pleasured to know that you entertained a proposition similar to Tegmark's MUH long before his framing of it. Congrats, this must be popularized.
4) I did not know Gibbs' statement that "the laws of physics are a universal behaviour to be found in the class of all possible mathematical systems." I completely agree with Phil. Now, I am going to read his Essay.
5) It is not a coincidence that you have found that the concepts and entities most central or fundamental to Math also have the greatest relevance to Physics.
6) Gerard 't Hooft's answer "We don't need atoms of space or whatever, because the laws of nature do the calculating for us" is intriguing and I agree with your interpretation that this means the laws of nature are inherently mathematical.
Finally, I find your Essay extremely intriguing. Thus, I am going to give you a deserved highest score.
I hope you will have a chance to read my Essay.
I wish you best luck in the Contest.
Cheers, Ch.