AI Agents Aren’t Stupid. Your Testing Harness Is.
You change a single code comment, and your AI agent spins up 4,000 unit tests. We laugh at the AI’s stupidity, but the joke is on us. An agent’s testing ability isn’t a standalone skill—it’s an emergent property of the entire system. If your harness lacks guardrails, the model isn’t to blame. The bottleneck is the feedback loop, not the AI.