- Does Your Step Counter Undercount Women? A Bayesian statistics audit of whether step counters miss more of women's steps. Short answer: if they do, it's small.
- Teaching a Computer to Tell Walking from Running It went from 56 hand-built features to 240 and got 86% right. The fun part is seeing which moves it still mixes up, and why. (Classical computer vision, random forest, SHAP.)
- Let the User Edit: What Happened When a Real Person Touched the Data 846 ghost edits, a plus-or-minus sign nobody warned me about, and one check counted twice. (How a read-only dashboard became a full-stack app.)
- How I Automated Tax Prep for a Small Construction Business Eleven accounts, 1,310 transactions, every Venmo payment counted twice, and an accountant waiting. (A three-stage Python pipeline and a review dashboard.)
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