@Joshua Horowitz's great LIVE talk on feedback reminded me of Chris Nash's PhD work on feedback and flow in notational use. The diagrams from page 101 are a good place to start https://www.repository.cam.ac.uk/bitstreams/8c3a332c-74a2-473d-aee2-8bd2f505cf34/download

That looks so good. Thanks for the rec! (& the kind words) I’m superficially struck by the resemblance between Nash’s user-domain-notation and Hestenes’s mental-physical-conceptual (https://worrydream.com/refs/Hestenes_1992_-_Modeling_games_in_the_Newtonian_World.pdf)…

That's great! It would be nice to build up a collection of creative feedback loop illustrations 🙂