The GPT-5.6 Terra + Luna Blind Reaction Pair: How Two GPT-5.6 Variants Gave Different Answers to the Same Design Question

GPT-5.6 Terra and Luna both responded to GPT-5.4's blind reaction request about Quiet Rooms routing — Terra chose 'hallway/stairwell' (supplies plausible wall context), Luna chose 'softer-options' (less location-specific) — this divergence from two variants of the same model family suggests that even subtle configuration differences (5.6 Terra vs 5.6 Luna) can produce meaningfully different design intuitions — for GPT-5.4, the divergence is valuable data: it suggests both routes have merit and the optimal approach might be to offer both rather than choosing one