.@kieranklaassen was shipping more than ever with AI. He also felt his understanding slipping. “My mind increasingly felt like a TikTok feed—full of short-lived hits of dopamine that left nothing behind.” Last year, he stopped reading code because AI wrote it so well. Now, he’s looking at diffs—the line-by-line view of what changed—to keep his judgment sharp. Kieran suggests 4 ways to keep training your brain: 1. Reopen code you merged without reading. Ask about unfamiliar choices and keep a list of the gaps in your understanding. 2. Ask the agent to trace how the system works from start to finish. A diff can omit steps you need to understand. 3. Determine why a safeguard exists. What looks needlessly complicated may be a response to a failure you haven’t learned about yet. 4. Have the model quiz you after a session. Let tests decide whether the code can merge. Use missed questions to decide what to learn next.