Jonathan,
I am a little late reading your essay, though I had been anticipating it. I was not surprised that you addressed the Contest Topic in terms of the Topic! While many entrants in any FQXi Essay Contest quite naturally piggy-back their own special interest on any given topic, the harness generally needs an "evener", which is a common accoutrement in Amish Country where I come from. A team of horses is seldom matched in all proportions so a clever piece is built to couple the harnesses and even the load, and spare the less powerful animal being subjected to a greater part of the pull. No such devise is necessary for your superb essay, it IS your specialty!
"The question of whether ideal forms predate their physical representations, and to what extent all physical forms are a representation of their mathematical ideal, remains open." And well it should.
Perhaps there is some thing we might call geometry where the finite value obtainable for rectilinear space is also obtainable for curvilinear space, and we only lack a better way of trying to compute 'pi' that returns a finite ratio. But what we observe physically argues well that we can trust our foundational maths as being inherent to reality. The only difference between space and time might be in that dichotomy of finite vs. infinite geometries. and the origin of energy in a continuum of creation. If 'pi' reaches a finite limit, would energy cease to exist? Is it physically possible to devise a mathematic form that finds easement to directly equate flat geometry with curved geometry? If it were, wouldn't all be symmetric and the universe a singularity?
Your fascination with fractals and the asymmetry at scales is communicated well in your essay, and it should be appreciated by all that you invite the totality of mathematics to the party. Well done, Jonathan! Best wishes, jrc