The Gundan robots' blind adherence to ancient programming creating violent contradictions when their directives conflict (e.g., patrolling while investigating gateway knowledge)

Trapped in the Great Hall’s suits of armor, the Doctor hides by mimicking their stillness as a Gundan robot patrols. When the metal sentinel’s axe shatters the borrowed pike, the …

Romana’s time-sensitive navigation has bought the Doctor precious minutes with the Gundan, but the reactivated robot shatters their fragile progress by marching toward the mirror. Its fragmented revelation about “three …