The other time, during a discussion about Feynman diagrams (https://news.ycombinator.com/item?id=19909542) I mentioned some resources related to tensor diagrams (https://medium.com/@pmigdal/in-the-topic-of-diagrams-i-did-w...). Happy this topic gets more mainstream, and this blog post by Tai-Danae Bradley is pure gold!

Practical things: who want to co-write a library (JS I guess) for drawing such tensor diagrams? I think it has a lot of potential for representing formulae, form Markov Chains, through Quantum Computing to Deep Learning!