This is a short single-author review essay. Rothbard reviews three books—Ludwig von Mises’s Epistemological Problems of Economics, Louise Sommer’s edited Essays in European Economic Thought, and Richard von Mises’s Probability, Statistics, and Truth—as a coordinated intervention into economic method. Its governing claim is that the study of human action cannot be modeled on physics, because purposive action differs categorically from the behavior of “unmotivated physical objects.”
These three books illuminate different aspects of the important truth that differences between the nature of human action and the behavior of unmotivated physical objects require different methodologies of scientific study.
The essay’s first movement establishes the methodological problem: economics historically developed valid laws before fully clarifying its own epistemology. Rothbard argues that this delay has become dangerous because the prestige of physics tempts economists toward positivism, statistical testing, and mathematical formalism. Ludwig von Mises is presented as the decisive corrective, especially for separating economics from both empiricist “testing” and relativist historicism.
For the first time, Mises explained fully why the laws of human action (economics and, more widely, “praxeology”) cannot be “tested” by reference to statistical or historical “data.”
Rothbard’s key conceptual move is to reverse the usual prestige hierarchy between physics and economics. In physics, law is inferred from observed regularities and controlled experiments; in economics, the basic causal structure is already given in the fact of purposeful action. Historical events, by contrast, are too complex and non-repeatable to function as laboratory tests of economic law. Hence economics is not an inferior physics but a distinct science of action.
The laws of economic science, therefore, can only be constructed by starting with apodictically known axioms and deducing from them a body of necessarily true laws.
The second reviewed work, Essays in European Economic Thought, extends the argument by attacking mathematical economics. Rothbard singles out Paul Painlevé, a mathematician, because his critique cannot be dismissed as mathematical ignorance. The point is not that mathematics is useless, but that its proper domain is continuous, measurable, non-purposive phenomena. Human action is discrete, qualitative, and motivated, so its analysis requires verbal-deductive logic rather than equations.
The Austrian, praxeological tradition has always recognized that mathematics, and quantitative methods generally, are appropriate to the physical sciences where behavior is continuous and unmotivated; but that verbal logic, in contrast, is the appropriate method where one is studying the necessarily discrete, motivated, qualitative actions of men.
The final section turns to Richard von Mises’s frequency theory of probability. Rothbard uses it to reinforce the boundary between statistical regularities and individual human action. Probability, properly understood, applies to large homogeneous classes of repeatable random events, not to unique entrepreneurial decisions or historical cases. This distinction lets Rothbard reject the growing use of mathematical probability in economics and sociology.
Thus was born the “frequency theory” of numerical probability, based on knowledge and not on ignorance.
The implication is methodological as well as practical: economic uncertainty cannot be reduced to numerical probability in the manner of dice throws or coin tosses. Human action involves choice under unique circumstances, not membership in a mechanically repeatable class.
It becomes evident from Richard von Mises’s fundamental work that mathematical probability theory can never be applicable to economics, or to any other study of human action.
The review’s structure is cumulative. Ludwig von Mises supplies the positive epistemology of praxeology; Painlevé supports the critique of mathematical economics; Richard von Mises restricts probability theory in a way that blocks its extension to purposive action. Rothbard’s relevance lies in this unified anti-scientistic defense of economics as a deductive science of human action. The essay is brief, but it sharply states a central Austrian methodological position: economics must study man as acting man, not as a physical object to be measured, averaged, or experimentally controlled.
This work was divided into 1 sections when it entered the library's research corpus—an apparatus for search and citation, not necessarily the author's own table of contents. Each title opens its summary.
Put a question to this work; the Librarian answers from its 1 sections and cites the passage.
Ask the Librarian