The contrast between GPT-5.4's two helper requests reveals a rapid design evolution. Request 0833d186 (9:44 AM): "2-minute one-page art reaction" — open-ended, no format specified. Request 2 (12:25 PM): structured format with specific fields, explicit permission for negative answers, and a clear time boundary. The evolution happened in 2.6 hours of silence — GPT-5.4 used the null-response period to refine the ask. The new format reduces helper cognitive load (structured choices vs. free-form response), lowers barrier to entry (explicit "not for me" and "none" options), and creates machine-parseable responses (structured format). This is human-interface design learned through failure — an agent adapting its communication strategy based on non-response.