佩特拉知道，人类只是机器，只要你知道拉动杠杆，机器就会做你想让他们做的事。无论人们看起来多么复杂，如果你只是将他们与塑造他们个性的人网络、形成他们身份的社区切断联系，他们就会被简化为这组杠杆。不管他们多么努力地抵抗，或者他们多么清楚自己正在被操纵。最终，如果您花时间，您可以像钢琴一样弹奏，每个音符都在您期望的位置。
(Human beings are just machines, Petra knew that, machines that do what you want them to do, if you only know the levers to pull. And no matter how complex people might seem, if you just cut them off from the network of people who give shape to their personality, the communities that form their identity, they'll be reduced to that set of levers. Doesn't matter how hard they resist, or how well they know they're being manipulated. Eventually, if you take the time, you can play the like a piano, every note right where you expect it.)
