Kevin and Oscar had synchronized their departure for midnight. Oscar arrived late. His wristwatch was malfunctioning. He’d been running a mild fever for days, and the contact heat had caused the watch’s mousebrain works to run fast. Oscar had been forced to reset his watch with its sunlight timer, but he had somehow botched it; his watch was jet-lagged now. He was running late, and it took far more effort than he had expected to climb to the roof of the Collaboratory. He’d never before been on the outside armor of the lab. In the sullen dark of a February night, the structure’s outer boundary was windy and intimidating, a wearying physical trial of endless steps and hand rungs.