Question
You ask an AI agent to write a complex SQL report that joins five tables to compute monthly revenue by cohort. It returns a 60-line query in seconds that runs without error and produces a plausible-looking number. You feel great about the time saved. Before you trust that number for a board deck, explain why this is a textbook false-confidence situation and how you'd convert the apparent speedup into a real one.
Treat the AI’s output as a draft to verify, not an answer to trust. Name the specific flaw and the input that triggers it, say how you’d catch it — tests, edge cases, reading critically — and how you’d re-prompt or decompose to get it right.
Vibe coding: describe the solution in plain language (or narrate it) and the coach grades your approach. Generating runnable code from your description is coming next.