Avoiding American TV spectacles this week? I recommend "The Essence of Calculus" series on YouTube from @3blue1brown. You, too, could have invented calculus. Start right now! https://www.youtube.com/watch?v=WUvTyaaNkzM&list=PLZHQObOWTQDMsr9K-rj53DwVRMYO3t5Yr https://twitter.com/drsekula/status/1092216451665182720/photo/1 https://chirp.cooleysekula.net/attachment/54293