The archive.

When does economic research justify policy advice, and when do its conclusions outrun its assumptions? In this 1948 review of the National Bureau of Economic Research’s anniversary collection, Fritz Machlup tests the reasoning that connects theory, evidence, and intervention. He challenges Harold G. Moulton’s claims to have displaced obsolete doctrines and questions Jan Tinbergen’s case against exchange-rate adjustment, distinguishing domestic-currency import expenditure from demand for foreign exchange. His praise for John Jewkes’s analysis of British employment policy supplies a contrasting standard: practical experience should sharpen questions about inflation, administrative limits, and the evidence still needed. The review offers a compact encounter with Machlup’s critical method—asking whether a proposition holds generally, under what conditions it holds, and whether those conditions support the policy proposed.

Can the history of an institution establish that it ought to endure? In this review of Harold G. Fox’s Monopolies and Patents, Fritz Machlup challenges the passage from historical origins to permanent justification. Fox’s defense of English monopoly grants rests, Machlup argues, too heavily on benevolent intentions and too little on economic effects. Against the claim that opposition to invention patents is recent, he recalls nineteenth-century controversy and the Dutch repeal of patent law in 1869. Yet he separates these objections from his appreciation of Fox’s detailed documentation. The review offers a compact example of how to distinguish a useful institutional history from the economic claims made on its behalf.

An accounting identity can be correct and still mislead a student about what causes economic change. This is the tension Fritz Machlup pursues in his 1949 review of the first volume of Erich Schneider’s Introduction to Economic Theory. He welcomes Schneider’s effort to build national-income accounts from the bookkeeping of individual firms, but questions formulations that make taxes and budget deficits appear to determine entrepreneurial income merely by definition. His criticism turns on a precise distinction: quantities recorded after the event do not, by themselves, explain how policy changes affect behaviour. The review offers a compact lesson in reading macroeconomic equations critically, while preserving Schneider’s case for aggregation as a practical necessity rather than a substitute for understanding individual decisions.

Sealed bids for cement and steel that match to the penny are no accident but the signature of a pricing formula — and this 1949 study, rushed out after the Supreme Court's Cement Institute decision, anatomizes how that formula works and why it should go. Under basing-point pricing a delivered price is reckoned from a designated base point whether or not the goods ship from there, so 'phantom freight' and 'freight absorption' erase local cost advantages and make rival quotations converge. Machlup treats this as geographic price discrimination and, tracing case histories in steel, cement, and corn products, as a cartel embedded in freight books and classifications rather than open conspiracy. Against warnings of chaos he sets uniform f.o.b. mill pricing, under which distance again becomes visible and buyers can hunt for genuinely cheaper sources.

Almost all economic change leaves some people worse off.

Defending free enterprise once meant, for many European economists, opposing patents. Fritz Machlup and Edith Penrose recover this nineteenth-century dispute to ask what can justify granting exclusive rights over knowledge others might independently discover. Their 1950 article combines the history of abolitionist campaigns—including the Netherlands’ abolition of patents in 1869—with a careful separation of claims too often treated as interchangeable: property, fair reward, incentives, and disclosure. Rewarding inventors, they show, does not by itself establish patents as the right instrument; stimulating invention does not prove that protection is necessary or worth its social costs. By distinguishing the political victory of patent advocates from the unresolved economic debate, the article gives readers concrete grounds for questioning what exclusive rights accomplish—and at whose expense.

A country’s need for imports is not the same as its demand for dollars—and foreign aid does not, by itself, prove a foreign-exchange market deficit. In this 1950 article, Fritz Machlup makes these distinctions central to his diagnosis of the postwar dollar shortage. He separates effective demand at a given exchange rate from planners’ desired imports and accountants’ records of past financing. His criticism of the IMF’s treatment of relief and reconstruction aid gives the analysis a concrete edge: assistance may pay for purchases that would never otherwise have occurred. Readers can discover why apparently similar deficits call for different responses, and why the case for productive foreign assistance must be distinguished from the case for exchange-rate adjustment.

In 1906 Schumpeter defended mathematical economics; in 1949 he pleaded for historical analysis — a reversal only in appearance, Machlup argues, for the man never lost the one nor lacked the other. What held across four decades was a disciplined pluralism: theory, statistics, and history each earn their keep on the problems they suit, and the sectarian spirit of the Methodenstreit, which made each camp treat its method as the only scientific one, was the real enemy. Machlup follows Schumpeter from bare functional relations toward an eventual acceptance of causal language, and shows how the split between statics and dynamics turns methodological choice into substantive economics: equilibrium explains the circular flow, while the entrepreneur's discontinuous innovation drives development. Methodological individualism, he stresses, is a rule for building explanations, not a creed of laissez-faire.

It follows that the claim usually made for statistical induction and verification must be qualified. Material exposed to so many disturbances as ours is, does not fulfill the logical requirements of the process of induction.

When does a more realistic economic model become a less useful one? In this contribution to a published methodological discussion, Fritz Machlup challenges the demand that a single theory capture every aspect of economic conduct. Responding chiefly to Paul Samuelson and Kenneth Boulding, he defends mathematics without granting it exclusive authority, and simplified models without mistaking them for complete descriptions. His treatment of the firm makes the stakes concrete: a model suited to price determination need not explain investment or managerial power, while even a firm’s survival depends on how the firm is defined. Readers encounter a precise distinction between realism and relevance—and an argument for combining disciplinary knowledge when a particular problem requires it, rather than constructing an all-purpose synthesis.

The addition of "admittedly realistic" variables into analytical models can be defended only if they significantly modify the results.

For the seller who feels himself one among very many, rivals are colleagues rather than threats—and it is this state of mind, not the sheer count of firms, on which Machlup rebuilds the theory of selling. He coins pliopoly for the pressure of potential newcomers, setting it beside polypoly, oligopoly, and monopoly, and defines a true monopolist by the triple absence of all three. Against businessmen who claim they price by average or full cost, he reinterprets such rules as competitive responses to expected demand elasticity, treating cartel ethics and break-even charts as evidence rather than refutation. The analysis ranges across perfect and imperfect polypoly, artificial scarcity and monopoly rents, and the kinked demand curve, always parting the economist's objective calculus from the trader's rough feel for the market.

The concept of the industry is nothing but an expedient device for ruling out negligible or too uncertain interdependence.

Monopoly, in this account, is less a market form than an institutional problem: every arrangement by which alternatives are restricted — business combinations and buyer power, union control of labor markets, and above all government policies that shelter favored groups from competition. Machlup credits antitrust with making cartel agreements less secure, yet judges the law of monopolization, the prohibition of trusts and mergers, a dismal failure. His sharpest reversal is that monopoly is often a product of public permission, manufactured through licensing, tariffs, patents, and marketing orders. He carries the same logic into labor, rejecting the purchasing-power theory of wage increases and denying that union monopoly offsets business monopoly — their effects, he argues, are additive rather than compensatory. First published in 1952, it remains his most sustained brief for open entry.

The economic policies of government are far-flung and many-sided. On many fronts, therefore, could government fight for competition and against monopoly if it so desired. It has not seen fit to do so.

A textbook can be admirably modern and still leave essential questions unanswered. In this review of Part III of Erich Schneider’s economics textbook, Fritz Machlup praises the lucid treatment of credit expansion and multiplier theory while testing the limits of its short-run macroeconomic framework. His objections are concrete: gold remains relevant to money creation, velocity need not be constant to matter, and capital theory cannot simply be excluded from an account of income and employment. The central tension is between explaining what follows if consumption and investment plans are realized and explaining why those plans may fail. Machlup’s combination of technical scrutiny and pedagogical appreciation shows how a textbook’s analytical strengths can coexist with consequential omissions.

Too often do we forget that one of the foremost tasks of economics is to explain and predict circumstances under which consumption and investment plans cannot be realized.

When does a research technique become an obstacle to understanding? In this joint review of books by John Madge, Arnold M. Rose, and Hans L. Zetterberg, Fritz Machlup challenges the elevation of observation, interviews, and experiments above the problems they are meant to illuminate. He faults Madge for subordinating theory to empirical research, while finding in Rose and Zetterberg alternatives that join logical deduction to empirical testing. Writing as an economist engaging sociological method, Machlup distinguishes pluralism about methods from relativism about truth. The review offers a compact way to examine why accumulated findings need explanatory connections—and why a measurement procedure must answer to the hypothesis being tested, rather than define in advance what science may ask.