translation.en: One is fully passive, like I just described -- as in, for instance, the trucker example, where we don't actually intervene in the population in any way.
translation.zh: 一个方式是完全被动， 如我刚刚描述的 --- 例如在卡车司机的例子中， 我们不需要以任何方式干涉这个群体的行为。