End of The Universe
Now Schreiber's view of the underlying physics still appears, mysteriously, to be quite conventional. He talks about stringy holography as if the boundary field idea is a principle in its own right. Instead, we originally considered the Gray tensor product in the context of a heirarchical quantum Machian principle (completely independently of gauge theories) where boundaries arise through a consideration of twistor causality. Anyway, there is a growing consensus (at least up to two people) that this dimension raising aspect of weak n-categories is crucial to quantum gravity.
It will be interesting to see how the mathematics converges: a calm process from a mathematical point of view, but perhaps a cataclysmic process from a physical one. Meanwhile I received a very polite letter from McDonalds declining my job application, so fortunately I am again in gainful employment marking large piles of assignments on Fluids and Thermodynamics.