Doctor exposes Crystal's unnatural origin

Trapped in the secure area, the Doctor deduces the Great Crystal must have been engineered in zero gravity, far beyond Manussan capabilities. His reasoning exposes the artifact as alien in origin and construction, contradicting the local origin story. Nyssa’s immediate challenge crystallizes the breach between accepted history and scientific fact, undermining the ceremony’s foundation and forcing both allies and enemies to confront the Crystal’s true source. This moment of revelation accelerates the push toward decisive action—whether to secure or destroy the artifact—while sharpening tensions between trust in the Doctor and allegiance to established narratives. key_dialogue: [ DOCTOR: Yes, of course, I should have realised. Structurally perfect. It has to be free of all flaws and distortions. Even the minute distortions produced by the effects of gravity. NYSSA: What are you saying? DOCTOR: The crystals were designed and built by a people who had mastered the techniques of molecular engineering in a zero gravity environment. NYSSA: But the Manussans are not that advanced. DOCTOR: No, and according to Chela this crystal is eight hundred years old. ]