Hint: Carrigan
No one knew Carrigan' s history. Not even his employers at the convention center. Carrigan had escaped conviction for a serious crime. It was very controversial at the time and the public tried to convince the court afterwards to have Carrigan wear a copper device so that they would always know where he was. The controversy was great, but the court of law said that he was innocent and that it was not conventional to monitor an innocent man freed from conviction. That would contradict his right to freedom. Now Carrigan was just the conference convenor responsible for coordinating the daily events at the center. He was good at his job, contributing daily to the improvement of operations. But his contribution was not so great that he was always busy. He had, in fact, perhaps too much free time. That was when he converted his garage into a workshop for auto repair.
谁都不知道卡里根的来历，就连他在会议中心的雇主们也不知道。卡里根犯有重案却没有被定罪。当时这件事非常有争议，后来公众试图说服法庭让卡里根戴个铜制装置以便随时掌握他的行踪。争论非常激烈，可法庭说他是无罪的，而监控一个没有判罪的无辜者是不合常规的。那样做会同他的自由权相矛盾。现在卡里根是中心负责协调日常事务的会议召集人。他工作出色，每天都为改进中心的工作做出贡献，但是他的贡献还没有大到让他终日忙碌的地步。事实上，他也许是自由的时间大多了。就在这时，他把他的车库改成了汽车修理铺。