Weekly AI Observations: Coding at 3× Speed and the Counterintuitive Tradeoffs

This week a teammate and I ran a deep experiment: we handed almost the entire coding workload of a new project to AI. The outcome was stunning—we wrapped up in a single week what normally takes us three. Yet behind that unprecedented velocity were a few counterintuitive truths that quickly surfaced. The Cost of Efficiency and Cognition on Overdrive When coding hits three times its usual speed, the first thing to tire out isn’t your hands—it’s your brain....

October 19, 2025 · 4 min · Yuanhao

AI Weekly Notes 251012

I tried a different workflow this week: let the AI interview me first, then spin my answers into a story. Two big moments stood out—catching the vibe coding wave with Claude Code, and feeling the AI heat in San Francisco during Tech Week. Vibe Coding Sends Productivity into Orbit Trying vibe coding wasn’t a spontaneous whim. I’ve long used Copilot mainly for inline completion, occasionally switching to its chat mode, and I relied on Codex to build a few standalone features....

October 11, 2025 · 5 min · Yuanhao