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cold start (4)

may the --force be with you

A weekly blog about ML, agentic development, Claude Code, nvim, new tech, industry news, controversial takes, and whatever I'm currently struggling with.

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2026-09-14· 11 min4. A/B testing: when the standard test is the wrong tool+[#multi-armed][#pre/post][#a/b]The standard test answers one narrow question. When you're maximizing revenue instead of detecting a difference, or your users aren't independent, or there's only one of you to test on, that question is the wrong one. Bandits, switchback tests, and synthetic controls, with a plain-language version for the non-statisticians in the room.2026-09-07· 19 min3. A/B testing: the stat-sig problem+[#em][#stat-sig][#a/b]Everyone thinks they know what statistical significance means. Almost nobody does. A generic ecommerce scenario, the actual math behind peeking, and why this is an org problem wearing a stats costume.2026-08-24· 9 min1. My dev setup+[#tools][#nvim][#claude-code][#warp]Karabiner remaps that skip the guesswork, zsh + Warp with zero multiplexers, three editors plus Claude Code for the other half of the time, and Spotlight beating Raycast out of the lineup.2026-08-17· 4 min0. Intro: who I am, what I do.+[#meta][#em][#ml][#career][#intro]Who I am, what I do.