miniblog.

I've not seen this before: a captcha to distinguish adults from children! The in-app purchases were behind this screen. The primary user is a 3 year old who can only count to 20 😊

I regularly see the phrase "all Xs are Ys, but not all Ys are Xs" in teaching material. Even material for children! I have to re-read it every time. I very much prefer "Y is a more general category than X" or "X is a subset of Y". Do people find this phrasing helpful, or is it poor pedagogy?

Difftastic update: I've rewritten the tree diffing logic to use Dijkstra's algorithm similar to Autochrome. It works amazingly well! Note how it recognises both parent and children unchanged nodes in the lisp example. You can even see me refactoring Rust to use if-let.