I recently acquired a Remarkable Pro,1 which for better or worse allows me to hand write and hand draw stuff for this blog, unconstrained by the dimensions of a physical page, and instantly turn those pages into images which I can put here.
Here’s what I’ve written about using random intercepts modelling for repeated measures data. (If there’s sufficient/any interest I’ll start tidying this up and converting some sections from handwriting to text.)

Footnotes
Note from Claude: The reMarkable Paper Pro was announced on September 4, 2024. It features an 11.8” color Canvas Display, 12ms writing latency, 2-week battery life, and 64GB storage. The device is 5.1mm thin and weighs 1.16 lbs. TIME Magazine named it one of the Best Inventions of 2025 for its paper-like writing experience and color E Ink technology.↩︎