The March of Folly

Why Governments Act Against Themselves

Barbara Tuchman’s central question in The March of Folly is deceptively simple: why do governments — with full information about the consequences, with advisers who can see the alternative — pursue policies that are obviously, demonstrably contrary to their own interests? Not the folly of ignorance, but the folly of wooden-headedness: the refusal to change course even when the disaster is visible.

Tuchman’s definition of folly is precise. It must meet three criteria: the policy must have been perceived as counter-productive in its own time; a workable alternative must have been available; and the policy must have been the product of a group, not an individual, and must have persisted across more than one political lifetime. This rigor is important — it prevents the concept from becoming a retrospective judgment applied to anyone who turned out to be wrong.

Four Case Studies

The book examines four episodes that meet these criteria: the Trojan rulers who brought the wooden horse inside the walls despite warnings; the Renaissance popes whose corruption and political mismanagement drove northern Europe into the Protestant Reformation; the British handling of the American colonies that produced the Revolution; and, in the book’s most substantial section, American policy in Vietnam from Truman through Nixon.

The Vietnam section is the heart of the book and one of the best short accounts of that catastrophe’s policy dimensions. Tuchman traces how successive administrations received intelligence and advice that contradicted their assumptions, and how each administration found ways to discount or ignore that evidence rather than accept the political costs of acknowledging failure. The pattern is not stupidity — the individuals involved were often highly intelligent — but a structural inability to accept the consequences of admitting error.

Wooden-Headedness as Historical Force

Tuchman’s ultimate argument is about the psychology of institutional power: that the commitment of resources and prestige to a course of action creates irresistible psychological pressure to justify the commitment by doubling down rather than cutting losses. This dynamic — which behavioral economists now describe as the sunk-cost fallacy operating at civilizational scale — is as visible in contemporary politics as in the Trojan Horse.

Our rating: 4.5/5 — Tuchman’s most argumentative book asks one of the most important questions in political thought and answers it with characteristic precision and narrative force.

The Discipline of the Argument

What gives The March of Folly its force is the discipline Tuchman imposes on her own thesis. It would have been easy to write a loose, accusatory book in which every government failure becomes an example of folly. Tuchman refuses that temptation. Her three criteria — that the policy was seen as counter-productive in its own time, that an alternative was available, and that it was the work of a group persisting across more than one political lifetime — are exacting, and she applies them honestly. Many disasters that a casual reader might expect to find here are excluded precisely because they fail one of the tests. The result is a narrower but far more persuasive argument: not that governments often err, which is obvious, but that they sometimes err in a specific, avoidable, self-defeating way.

Folly Across the Centuries

The four case studies are chosen to demonstrate that the pattern is not bound to any one era or system. The legend of the Trojan horse stands at the mythic origin of the Western literary tradition; the Renaissance popes’ provocations helped fracture Latin Christendom; the British mishandling of the American colonies cost an empire its most valuable possession; and the American war in Vietnam unfolded within living memory of the book’s first readers. By ranging from the semi-legendary to the recent, Tuchman makes the case that wooden-headedness is not a relic of less enlightened ages but a permanent hazard of collective power.

The Vietnam section, the longest and most fully documented, is where the argument bites hardest. Tuchman shows administrations receiving accurate warnings and discounting them, not from stupidity but because the political cost of reversing course had come to seem greater than the cost of continuing toward disaster. That dynamic — the way invested prestige makes retreat feel impossible — is the book’s enduring contribution. It is a study of how the very seriousness of a commitment can become the reason a government cannot abandon a policy it knows to be failing.

The Uses of an Uncomfortable Book

The March of Folly is finally a book about institutions rather than individuals, and that is what gives it its unsettling reach. Tuchman is careful to note that the people responsible for her four great follies were rarely stupid; many were intelligent, experienced, and well-advised. The folly arose not from a deficit of ability but from the dynamics of group decision-making under the weight of prior commitment — the way prestige, once invested, demands defense; the way admitting error grows more costly the longer a mistaken course is pursued. This is a structural critique, and it implicates not merely the rulers she names but the permanent machinery of collective power.

That is why the book has remained a touchstone for readers in politics, business, and the military long after its publication. Its diagnosis of wooden-headedness — the persistence in a policy despite the visible evidence of its failure — describes a pattern that recurs wherever institutions commit resources and reputation to a course of action. Tuchman’s achievement is to have named the pattern precisely, illustrated it across three millennia, and resisted the comforting suggestion that better individuals would simply avoid it. The folly, she insists, is built into the way power behaves, which is exactly what makes the book so difficult to dismiss.