The ascent pressed them into their seats, and she gazed down, fascinated by the complexity. The old industrial docks had been wiped clean, replaced by a long gray slab that disappeared into the pollution. Ships pushed up and onto this new waterfront like beached whales, any pretense at streamlining gone. Thousands of autonomous trucks nuzzled their cellular forms in no discernible order, algorithmically dictated movements appearing as random as leaves floating on a river. It was only when the trucks poured through the exit gates and joined the roadway that they converged into recognizable lines. That Julia had hacked such a huge and complex system astonished Alice. She caught Xavi’s eye; he was thinking the same thing.