As it turns out, the park’s systems are only fully automatic so long as they keep functioning. When anything happens to disrupt them, they require a fully manual reboot. Wu explains the rationale behind this choice to Gennaro, but it also illustrates the importance of human direction to technological systems. Without operators, the computer system itself doesn’t know what would be helpful or harmful to do. Readers should pay attention to the role of the operator—Arnold—who must bring all the modules back online in the correct order. And if the park operators needed another reminder of how little humans actually control, they regain the full use of the park’s computer systems just in time to see the tyrannosaur attack.