Barbara W. Tuchman's "The March of Folly: From Troy to Vietnam" explores instances in history where leaders have followed misguided policies despite evidence suggesting otherwise. One notable example involves Hubert Humphrey's advice to new members, warning them against making impassioned speeches critical of U.S. policy in Vietnam. This highlights the political pressures and complexities surrounding the conflict, along with the struggles politicians faced in voicing dissent in a charged atmosphere.

Humphrey's counsel reflects a broader theme in Tuchman's work, underscoring how often decision-makers ignore rational objections in favor of stubbornly pursuing detrimental paths. By emphasizing the consequences of unexamined policies, Tuchman invites readers to consider the importance of critical thinking and accountability in governance, especially during turbulent times like the Vietnam War.