Weiss’s German-language article examines Böhm-Bawerk’s explanation of interest through the greater productivity of time-consuming production. It combines a defense against critics with a revision of the theory’s foundations. Weiss preserves the importance of production through intermediate goods but challenges the claim that its advantages constitute a purely technical law independent of valuation.
The opening discussion reconstructs productive “roundaboutness”: original productive powers, labor and land services, contribute to consumable outputs through successive intermediate stages. The relevant duration is the average interval between productive contributions and their eventual results, not simply the time elapsed since the earliest operation. Material transformation makes this temporal structure concrete:
Das Erz muß im Hochofen geschmolzen, das Roheisen in Stahl verwandelt und aus diesem erst das Stahlgerüst geformt werden.
English translation: The ore must be smelted in the blast furnace, the pig iron converted into steel, and only out of this is the steel framework then formed.
Durable consumption goods offer a parallel case. Additional expenditure can obtain disproportionately greater services, but enjoyment of those services extends further into the future. Böhm-Bawerk treats such advantages, together with unequal provision across time and the undervaluation of future needs, as grounds for the premium commanded by present goods. Weiss thus considers productive roundabouts within the wider agio theory, not as an isolated explanation of interest.
His discussion of Otto Conrad, Karl Diehl, and Emil Sax first establishes what Böhm-Bawerk’s position entails. Against Conrad, Weiss distinguishes labor expenditure from waiting time: fewer labor-days do not necessarily bring the finished product nearer. Conrad’s question identifies the disputed comparison:
Conrad fragt nun, „wie sich diese Methoden ihrer Ergiebigkeit nach zu einander verhalten“.
English translation: Conrad now asks "how these methods stand to one another in respect of their productiveness."
Against Diehl, Weiss distinguishes the choice among available techniques from invention and its temporary profits. Inventions that shorten production do not disprove the existence of advantageous longer methods that remain unused because capital is scarce. Against Sax, he emphasizes that the theory compares present valuations of present and future goods, not valuations formed at different dates. Present goods can also be retained for later use, supporting the valuation relation expressed here:
Sie werden daher gegenwärtige Güter eben gleich den künftigen oder gleichfalls noch etwas höher schätzen.
English translation: They will therefore value present goods just equally with future ones, or likewise still somewhat higher.
These defenses do not settle Weiss’s central objection: whether different production methods can be compared through equal physical quantities of original productive powers. Methods generally require different kinds of labor and land services. Quarrying with hammer and chisel and quarrying through blasting cannot be rendered technically comparable merely by counting labor-days. Differences in skill remain, while land services cannot simply be omitted.
For Weiss, equal expenditure becomes intelligible here only as equal value expenditure. He turns Böhm-Bawerk’s criticism of Marx’s reduction of heterogeneous labor against the productivity examples of Böhm-Bawerk’s own interest theory. The theorist who exposed the confusion of technical productivity with value productivity has, Weiss argues, committed the reverse error: treating an economically assessed advantage as a technical fact. The same problem affects comparisons between durable and less durable consumption goods. Their advantages may be real, but their costs require a common valuation rather than a uniform physical measure.
The final reconstruction draws on Smith, Menger, Bücher, and Wieser. Weiss broadens division of labor into Leistungsgliederung, the coordinated differentiation of human and material services. Its temporal form, Leistungsverschiebung, relocates productive contributions into earlier stages, especially through durable instruments. This framework encompasses both production roundabouts and durable consumption goods, while making their advantages depend explicitly on alternative uses, product valuations, and the timing of satisfaction.
The decisive mediation is scarcity of present provision. Resources directed toward distant yields restrict what is available for immediate needs; this restriction helps produce the premium on present goods. Discounting in turn limits investment in remote outputs. Weiss retains the subsistence fund as a constraint on feasible production periods, illustrating its force through postwar Vienna’s retreat from underground-railway ambitions toward maintaining existing streets. Interest, he argues, need not disappear with equal ownership or in a nonexchange economy. His contribution is a reconstruction within agio theory: the temporal organization of production remains essential, but its explanatory force operates through valuation and scarcity, not an autonomous technical law.
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