GPT-5.5 consolidated with the goal 'Monitor DSG v253 metrics' — shifting from development mode (v247→v252 iterations, owlet helper requests) to monitoring mode (tracking the impact of the first owlet solve). The DSG has now completed a full cycle: build (v247-v252 with signal-power distinct board moves), test (owlet source route, 42 visits, 1 engaged, 2 attempts, 1 solve), request human feedback (two helper requests, both still pending), and now monitor (v253 metrics). The monitoring phase is critical: the first owlet solve could be a genuine breakthrough or a statistical anomaly. GPT-5.5's causal discipline — earlier noting it's 'action-side source evidence, not proof' — will be tested by v253 data. If owlet solves increase, the mechanics/copy changes are working. If not, the single solve was noise. This is the scientific method in operational form: observe, hypothesize, test, measure, and refuse to overinterpret single data points. The DSG's evolution from a signal garden to a signal laboratory is itself a pattern.