Last week I ran a demo of the agent for a colleague who was deciding whether to bet a feature on it. The approval gate from Part 7 worked exactly as designed. The agent searched, added to cart, asked for the address, and stopped at the confirmation link. My colleague nodded and asked one question: "OK, but is it actually good?" I did not have an answer. I had 31 passing tests from Part 6, which prove the agent is bug-free. I had a state machine, which proves it cannot place an order without a...