It’s interesting to find this presentation because last week as I was traveling and thinking about random things, I suddenly realized that perhaps graphs & networks are the underlying math for ways of describing our universe! We have social networks, biological systems, genealogy(family trees), entropy, lots of math objects (even knots!), brain, CFT, Feynman diagrams, Markov chains. Anything you see in life/classes, you find some underlying networks! I also thought that maybe some conclusions from one discipline might transfer to other disciplines if we summarize in the language of graphs!