On this blog I’m focusing on quantum technology and “how scientists can save the planet”. But I have a previous life, when I worked on n-categories and quantum gravity — and I still have three grad students doing theses on those topics: John Huerta, Chris Rogers and Christopher Walker. They’re all finishing up next spring — you should hire them!
Unfortunately, it’s a bit hard to explain their work in simple terms.
You can comment over there (that is, on the n-Café), if you want.