Well, that was my title for my seminar last Thursday at the KITP. My plan was to explain more the techniques behind some of the work I've been doing over the last few years, in particular the business of treating multicritical matrix models as building blocks for making more complicated theories of gravity. The seminar ended up being a bit scattered in places as I realised that I had to re-adjust my ambitions to match limitations of time, and so ended up improvising here and there to explain ...
