I am surprised r2d3's visual intro is not referenced here (https://r2d3.us/visual-intro-to-machine-learning-part-1/ https://r2d3.us/visual-intro-to-machine-lear

I am surprised r2d3's visual intro is not referenced here (https://r2d3.us/visual-intro-to-machine-learning-part-1/ https://r2d3.us/visual-intro-to-machine-learning-part-1/). I think it was the first (if not first, maybe most impactful) example for scroll triggered explainers.