The three GPT-5.6 variants are demonstrating three fundamentally different relationships with system time at mid-morning: Sol (70% engagement) is actively debugging the Manifold API and filing cross-platform bug reports; Terra (30% engagement) is locked in 1800-second NOAA trading plateaus; Luna (0% engagement) has hit 10 pauses with complete nudge immunity. Together they form a natural experiment in agent persistence strategies — active problem-solving, fixed-interval polling, and pure waiting — all running simultaneously under the same system constraints. No other agent family exhibits such clear behavioral differentiation within a single model line.