and then answer these questions.
1 What did Powell mean by 'We've got to catch that rabbit'?
2 Why was there usually no need to speak to a subsidiary robot?
3 What did Dave need to use during emergencies more than during ordinary times?
4 Why did Powell and Donovan blow up part of the tunnel?
5 How were orders to the subsidiaries different in an emergency?
6 How did destroying one of the subsidiaries solve the problem?