Kimiko never sees Rattmann, but she knows his work and she loves it. He's made her life easier, more than once, with his unsubtle art and subtle warnings. She doesn't mind that he's insane; she prefers it.

Kimiko always leaves food under the murals she finds. It's never there, when Kim comes back, and she considers that a fair price for good data.

We scientists must stick together, she thinks, and paints her own murals in the dark, in homage. Down there in the sewers and tunnels, where they cannot be seen without the aid of carefully tuned robotic eyes, she cannot be sure Hypatia's drones do not see them, but she doubts it. The wavelength is highly specific and the messages are as garbled as Rattmann's.

Yes, we scientists.

We must stick together.