The archive.

Why might urban land rise in value even without any special advantage of location? In this 1939 conference abstract on Europe, Karl Pribram shifts attention from privileged sites to the changing relation between rentals, construction costs, and interest rates. His account of building activity free from governmental interference turns on an asymmetry: rentals could retain their gains through depression while construction costs fell, enlarging the residual return attributed to land. Once capitalized in property prices, that return became a cost for subsequent purchasers. This compact argument offers a precise connection between business fluctuations and land valuation—and explains why Pribram considered “absolute” ground rent potentially more influential for European building activity than the more visible advantages of location.

Why can construction continue as ground rents fall, yet fail to revive when rental returns improve? In this 1939 conference abstract on the United States, Karl Pribram locates a possible answer in mortgage finance. Comparing American building cycles with European experience, he argues that expansive credit can sustain a boom despite declining ground rent, while foreclosed properties held by financial institutions can obstruct recovery long after rental conditions become favorable. His hypothesis challenges the view that American construction cycles arise from forces separate from general business fluctuations. This compact account offers a precise distinction: the forces initiating a cycle may be shared, while mortgage-market institutions alter its duration and amplitude—and weaken ground rent’s power to regulate new building.

Symmetry makes a many-variable probability problem unusually compact in Gerhard Tintner’s 1939 article. He studies a quadratic form in independent standard normal variables with one common coefficient for squared terms and another for cross-products. Its characteristic function separates into just two factors: one for collective movement and one for the remaining contrasts. The interest lies both in this reduction and in Tintner’s effort to turn it into a usable calculation, moving from Fourier inversion and a hypergeometric expression toward tabulated chi-square densities. Readers can trace how coefficient structure determines distributional structure, while distinguishing the robust characteristic-function result from printed density formulas whose signs, normalization, and conditions require verification before numerical use.

Peace among formerly sovereign states, this 1939 essay argues, cannot rest on political or military union alone; it requires a genuine common market, and that market quietly disarms the interventionist state. Once goods, people, and capital move freely across internal borders, no member government can prop up local prices, shelter a monopoly, or sustain a restriction scheme dependent on territorial control—and, Hayek adds, the federation itself cannot easily replace those powers, because a large heterogeneous people will not agree on whose industries deserve protection. Economic planning presupposes a shared scale of values that diversity denies. Socialism becomes the limiting case: incompatible with free movement within, and lacking the common purpose a socialist union would require. Federation thus emerges as both a peace project and a liberal constraint, with Robbins and Streit in view.

The whole armory of marketing boards and other forms of monopolistic organizations of individual industries will cease to be at the disposal of state governments.

Cheap borrowing does not make steel, machinery or time more abundant. In this 1939 article, republished in 1997, Hayek asks whether wartime authorities should hold interest rates down when urgent production needs make capital scarcer. His distinctive emphasis is on investment’s timing: a machine that saves more labour overall may still be a poorer choice if its benefits arrive too late. He treats interest chiefly as a means of allocating capital, rather than rewarding saving, and follows that distinction into practical decisions about replacing worn equipment or diverting maintenance resources to armaments. The article offers a compact way to distinguish financial ease from real productive capacity—and explains why, in Hayek’s view, a misleading interest rate can distort the choices of government planners and private entrepreneurs alike.

Protecting a producer’s price can unsettle everything around it. In this 1939 address, Oskar Morgenstern examines European public monopolies through the incentives their guarantees create, rather than their formal administrative structure. Austria’s milk regulation and Czechoslovakia’s grain monopoly supply concrete cases: protected prices encourage output while consumption falls, leaving authorities to finance surpluses, restrict production, and police unofficial trade. His central contention is that each attempt to preserve the original price commitment demands further controls. Political interests in distribution help explain why retreat proves difficult. The address offers a sharply critical account of the difference between stabilizing prices and stabilizing economic life, tracing how measures intended to protect producers can shift costs onto consumers, employment, and unprotected sectors.

Split cleanly in two, the Keynesian multiplier here becomes an instantaneous logical ratio implied by the marginal propensity to consume and a dynamic process by which output actually adjusts over time. The first follows at once from how income-receivers divide any increment between spending and accumulation; but that behaviour alone, Shackle stresses, cannot explain why firms would expand the output of consumption goods. Only assumptions about entrepreneurs' reactions to sales, inventories, and expected income turn the ratio into a theory of production. Where earlier writers assumed intended accumulation and realized saving simply coincide, he foregrounds their possible divergence: an attempt to raise the pace of accumulation runs down consumer-goods stocks unless output follows. The open-economy extension folds an export surplus into the same field as domestic investment, so a rising surplus can set expansion going exactly as investment does.

Hitherto in expressing the multiplier principle authors have assumed *equality*.

Can an account of conflicting worldviews also explain why political restraint fails? In this brief 1939 review of Harley Farnsworth MacNair’s The Real Conflict between China and Japan, Emil Lederer welcomes an explanation that reaches beyond territory, wealth and power to the historical beliefs shaping state ambitions. His sharper intervention concerns the consequences of that explanation: he argues that a Japanese political system driven by prestige and unlimited ambition leaves advocates of a “sensible” policy powerless and makes appeasement futile. The review offers a compact encounter between appreciation and criticism, showing how Lederer turns MacNair’s account of ideological conflict into a question about whether a political system can accommodate moderation.

Political disagreement need not make methodological criticism futile. In this second installment, Felix Kaufmann asks how social scientists can test one another’s claims without either invoking truths immune to evidence or treating every disagreement as an irreconcilable outlook. His answer begins with rules researchers already accept in practice: standards for truth, but also preferences for simplicity, precision, and explanatory usefulness. This distinction gives concrete purchase on disputed definitions, judgments of justice, and causal explanations that mistake necessary conditions for sufficient ones. Kaufmann’s treatment of value judgments is especially pointed: he argues that scientific legitimacy depends on shared criteria of assessment, not on excluding evaluation altogether. The article offers a way to identify where a dispute concerns evidence, where it concerns research aims, and where clarification can make cooperation possible.

The crucial point, however, is this: to think scientifically is to submit implicitly to definite rules.

Can a demand curve measured across decades remain meaningful if the relationship it describes is itself changing? In this review essay on Henry Schultz’s 1938 treatise, Gerhard Tintner combines admiration for empirical demand research with a pointed challenge to its static assumptions. Dividing historical data into separate periods, he argues, yields successive snapshots without explaining how demand changes. His alternative allows both the position and slope of a demand curve to vary, ideally in response to economically meaningful factors such as population, expectations, and tastes. Equally crucial is testing whether the unexplained residuals are random before trusting statistical significance. The essay offers a concrete encounter with the tension between elegant estimation and economic change—and with Tintner’s insistence that economic theory and statistical diagnosis must develop together.

An exchange-rate change can increase export volumes while reducing receipts in foreign currency—and import expenditure can rise in one currency while falling in another. In this first installment of The Theory of Foreign Exchanges, Fritz Machlup uses such distinctions to connect currency markets with production, consumption, and competition. His central challenge is to explanations that treat national price levels as independently given determinants of exchange rates. By tracing how exporters win customers from competitors, how new goods become tradable, and how overseas payments redirect domestic spending, he shows why exchange rates can move without prior inflation or deflation. Readers gain a concrete way to distinguish accounting identities from behavioural responses, and genuine changes in trade from the effects of the currency used to measure them.

A programme for full employment can be sound in principle yet act too late. In this 1939 review of H. S. Dennison and collaborators’ Toward Full Employment, G. L. S. Shackle welcomes their proposals while testing the assumptions that would make them effective. Why wait for unemployment to rise visibly before launching public works? What if prosperity fails to repay the debt incurred during a slump? His sharpest monetary objection follows borrowed money beyond its first use: the economic consequences depend on successive recipients, not simply on the original loan’s purpose. This short review offers a concrete encounter with Shackle’s policy judgement—sympathetic to measures supporting effective demand, but alert to timing, uncertain fiscal outcomes, and the limits of credit classifications.