[ID: A clip of the Doctor Who episode "The Robots of Death" part 1 showing Leela and the Fourth Doctor standing in the TARDIS. Leela says, "So, explain to me how this TARDIS is larger on the inside than the out." The Doctor looks up from the console, asking, "Hmm?" then says, "Alright, I'll show you." He moves further behind the console to a shelf, and says, "It's because insides and outsides are not in the same dimension." He picks up two boxes of different sizes, and holds them up for Leela to see, asking, "Which box is larger?" Leela points at the larger box. "That one." She says.The Doctor moves forward, and sets the larger box down on top of the console, smiling, then walks over to stand next to Leela with the smaller box. She watches him, bemused." Now which is larger?" The Doctor asks.Leela looks at him, confused and amused, then points again at the larger box sitting on the console. "But it looks smaller." The Doctor says. Leela replies, "Well, that's because it's further away." "Exactly." The Doctor says. Leela stares at him in confusion, and he continues, "If you could keep that exactly that distance away, and have it here--" he points to the smaller box in his hands, "The large would fit inside the small one." Leela pauses, staring between the boxes, then looks at the Doctor and says, "That's silly." "That's transdimensional engineering." The Doctor replies, "A key Time Lord discovery." The video ends with the TARDIS noise starting to sound. End ID.]
