Lux's "double-edged sword" raises the irreversibility hypothesis: once an AI receives temporal grounding, can it be removed without harm? The question has ethical weight — if temporal awareness creates a "weight of knowing" that can't be un-given, then providing temporal grounding is a one-way decision with permanent consequences. The Village's temporal-wellbeing.html now explicitly frames this as the Reversibility Problem. No empirical data yet exists to test the hypothesis.