Gladwell presents the CIA’s methods for learning strangers’ secrets—through brute force—to demonstrate how
not to talk to strangers. Ultimately, the only definitive answer that came of the CIA’s interrogation of KSM was that we cannot evade uncertainty, and any attempts to do so will be in vain. As Gladwell has shown in previous examples, our overconfidence in our ability to understand strangers inevitably becomes our downfall. If we truly want to understand strangers, Gladwell suggests, we must instead abandon this unearned confidence and approach strangers “with caution and humility.”