(The Doctor, Rose and Adam watch as news is gathered through Cathica)
The Doctor: Compressed information. Streaming into her. Reports from every city, every country, every planet. And they all get packaged inside her head. She becomes part of the software. Her brain is the computer.
Rose: If it all goes through her, she must be a genius.
The Doctor: Nah, she wouldn't remember it. It's too much. Her head would blow up. The brain's the processor. As soon as it closes, she forgets.
Rose: (indicating Suki and the others) So, what about all these people round the edge?
The Doctor: They've all got tiny little chips in their head connecting them to her and they… transmit. Six hundred channels. Every single fact in the empire beams out of this place. Now that's what I call power.