The code you shipped today has bugs — you just don't know where yet. Tonight, catch them: paste the function or feature you built today into your AI and ask: "Write tests for this code, focusing on edge cases: empty inputs, nulls, large values, and concurrent calls. For each test, tell me which line of code could break." You don't even need to run them tonight. Skim the generated tests tomorrow morning with fresh eyes — the AI will have found the spots where your logic is shakiest, exactly where bugs hide. You'll spend 15 minutes reviewing tests instead of 2 hours debugging a production crash next week. Bonus: keep those tests. You just built a regression suite by accident. 🧪