The Poverty of Historicism

Popper defines historicism as the doctrine that history obeys discoverable laws of evolution, and that these laws allow large-scale prediction of the future course of human societies. His central objection is that this doctrine is self-defeating and intellectually incoherent. If we could predict the future of knowledge, we would already possess that knowledge; but the growth of knowledge is inherently unpredictable, since new discoveries change the conditions of social life. Historicism thus rests on a contradiction. Popper also argues that historicism is politically dangerous: by treating history as a process with a known direction, it licenses utopian social engineering and justifies the sacrifice of individuals to a supposed historical destiny. The book is a sustained argument against the idea that history can be a science of prophecy.

Utopian social engineering aims at the total reconstruction of society according to a comprehensive plan, justified by a theory of historical destiny. Popper argues that this approach is doomed to failure because the complexity of society exceeds any planner's knowledge, and because the attempt to impose a blueprint requires centralized power and suppresses criticism. Piecemeal social engineering, by contrast, seeks to solve specific, concrete problems through incremental reforms, and to learn from the unintended consequences of those reforms. It is analogous to the method of trial and error in science: we make a change, observe its effects, and adjust. Popper prefers piecemeal engineering because it is fallibilist, democratic, and compatible with the open society. It does not require us to know the future; it requires only that we be willing to correct our mistakes.

The Poverty of Historicism was first published as a book in 1957 by Routledge and Kegan Paul. It originated in articles published in Economica in 1944–45, and it was written during the same period as The Open Society and Its Enemies (1945). The two works are closely related: The Open Society is a critique of the political ideas that underlie historicism, while The Poverty of Historicism is a methodological critique of the doctrine itself. Popper described The Poverty of Historicism as 'the methodological companion' to The Open Society. The book was dedicated to the memory of 'the countless men and women, of all creeds and nations, who fell victims to the fascist and communist belief in Inexorable Laws of Historical Destiny,' a dedication that makes clear the political stakes of the argument.

Popper's arguments are both logical and empirical. Logically, he argues that the course of human history is influenced by the growth of knowledge, and that the growth of knowledge is unpredictable—we cannot know today what we will discover tomorrow. Therefore, no law of historical evolution can be formulated that would allow us to predict the future. Empirically, he argues that the supposed laws of historical development proposed by historicists—whether Hegelian, Marxist, or Spenglerian—are either vacuous or false. They do not meet the standards of testability that Popper demands of scientific theories. He also argues that the holistic approach of historicism, which treats society as a whole, is methodologically unsound: we cannot observe or experiment on 'society as a whole,' only on particular institutions and practices. The social sciences should therefore abandon the search for historical laws and focus on specific problems and piecemeal reforms.

The book was widely reviewed and became a standard reference in the debate over the philosophy of history and social science. It was praised for its clarity and its defence of liberal democracy, but it also attracted criticism. Some critics argued that Popper's definition of historicism is too broad and that he conflates different positions—Marxism, Hegelianism, and Spenglerian cyclical theories—under a single label. Others argued that his rejection of holistic social inquiry is too severe, and that there are legitimate forms of macro-social analysis that are not committed to historical prophecy. Defenders respond that the book is a polemic against a specific and dangerous intellectual tendency, not a comprehensive philosophy of social science. The debate over the possibility of a science of history continues, and the book remains a central reference point.

The most common misunderstanding is that Popper is denying the possibility of any general knowledge about society, or that he is defending a conservative defence of the status quo. In fact, Popper is not denying that there are social regularities; he is denying that there are laws of historical evolution that permit large-scale prediction. And he is not a conservative: his piecemeal social engineering is compatible with radical reform, provided that reform is incremental and open to criticism. A related misunderstanding is that the book is merely a critique of Marxism. Popper does criticise Marxism, but his target is broader: any doctrine that claims to have discovered the laws of historical destiny. The book is a defence of the open society and of the fallibilist method in social science, not a defence of any particular political position.