In the quote from Max Brooks' book "World War Z," the author reflects on a fundamental aspect of human nature: our tendency to doubt the potential for extraordinary events until they materialize. This perspective highlights how people often require concrete evidence before accepting the possibility of significant changes or crises. It suggests that skepticism is a natural response to the unknown.

Brooks emphasizes that this inclination is not a sign of ignorance or weakness but a characteristic of being human. It underscores the challenges of anticipating disaster and the importance of being aware of potential threats, even when they seem improbable. Acknowledging this behavior can lead to better preparedness and response strategies in the face of crises.