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"Economics and Ideology: Aspects of the Post-Ricardian Literature"
IV. Ricardo as a General-Equilibrium EconomistH.39 I turn in the rest of my essay to matters of criticism. In the first place I wish to argue that we need to abandon the entire concept of a "dual development" of economic theory. I base the following summary statement on my forthcoming study of the Economics of David Ricardo*39 and related researches.
Ricardo and Demand-Supply AnalysisH.40 The notion that Ricardo did not possess a demand theory, or at best only a rudimentary one, is a preposterous but all too common belief; and it is a contention central to the approach that attempts to distinguish his economics from the general-equilibrium tradition. It is not difficult to demonstrate Ricardo's sophisticated appreciation of demand-supply technique and its use (together with the principle of profit-rate equalization) in the analysis of a variety of disturbances, such as subsidies, taxes, wage variations, and so forth. This method of analysis lent itself to a sharp distinction between the allocative consequences of changes that affect all sectors of an economy equally and those changes that affect each sector with a differential impact. This method—fully consistent with that of Alfred Marshall—was in fact the only one required by Ricardo in the derivation of the inverse profit-wage relationship. That Ricardo did not formally use it for this purpose is not in question; he chose rather to base himself upon the construction of the measure-of-value device. H.41 To understand why Ricardo proceeded in this way, it is necessary to make conjectures. It is possible—I would say probable—that Ricardo was eager to make his case in terms of the ideal measure because the dependence of the return on capital upon the proportionate shares strikes the eye particularly clearly in terms of this formulation. But, whatever the reason, the only rationale for the inverse profit-wage relation when we focus upon the process of industry adjustments to disturbances (a rationale which Ricardo himself provides, although not in this context) is that involving the market mechanism. And we must firmly emphasize that in this context there is no sense to the notion that the matter of distribution is somehow solved prior to pricing. H.42 Ricardo himself may be partly responsible for the erroneous notion to the contrary. He was prone, especially in the first chapter of his Principles, to assume a (lower) profit rate corresponding to a (higher) wage rate by use of the measure-of-value mechanism; next, he was prone to apply this profit rate to determine the new equilibrium cost prices that emerge following the disturbance. But Ricardo designed this procedure as a predictive device rather than as an account of process analysis. In the latter context the new equilibrium profit rate emerges along with, and not prior to, the new equilibrium price structure. H.43 Earlier in this essay we approached the general issue of the relation between distribution and pricing from the persepctive of the consequences of a change in the wage rate. We now approach the matter from the reverse perspective, that of the consequence upon distribution of a change in the pattern of demand for final goods. H.44 Insofar as concerns distribution itself, it is clear that wages are treated as a (variable) price determined by demand-supply relations; Ricardian theory is not of the fixed-wage variety.*40 Here we must emphasize that the analysis proceeds at the aggregate level, labor demand being represented by part of the capital supply, and labor supply by the work force; it is the average wage that is at stake not the wage rate paid to particular categories of workers. Now, we need to stress that Ricardo's analysis of the allocative effects of changes in the pattern of demand is limited in exactly the same way as in Adam Smith's formal statement in the Wealth of Nations. There—because of Smith's assumption of identical capital-labor ratios everywhere—such changes affect (temporarily) the factor returns in the particular industries involved, but not the general return and thus not the average wage. But Ricardo took an important analytical step forward in his chapter "On Machinery." Here he introduces variations in the circulating-fixed capital division and traces out the implications for labor demand and the wage rate. If we extend generally the principles developed in this discussion, we can in no way avoid the conclusion that changes in the pattern of final demand may affect the demand for labor and thus the general wage rate) by altering the overall circulating fixed capital rate. There are no "paradigmatic" differences between Ricardian and neo-classical theory insofar as concerns the effects upon distribution of a change in the pattern of final demand. The notion of a sharp divorce between distribution and pricing does not stand up to close examination.
Ricardo, Marshallian Economics, and Resource AllocationH.45 But what justification is there in arguing that the differences between Ricardian and Marshallian economics do not involve matters of principle but only matters of detail? Or further, to argue that this allows a transfer from one to the other by way of minor revisions (suggested indeed by Ricardo himself)? It is clear that this constitutes a very tricky problem. For it is one of the characteristics of economic theory that different analytical models may be described in terms of one another. Thus, there is admittedly great difficulty in identifying those differences that constitute alternative simplifying assumptions (including different values accorded to the key variables) from those which constitute matters of principle. Were the assumptions of uniform factor ratios and constant commodity wages used by Ricardo over and over again without significant exception, the obvious implication would necessarily be that they represent features of his "basic model." In that case it would be unconvincing to argue that Ricardo "could" easily have opened his model in these respects. The objection would be compounded if the techniques of resource allocation were as scarce in his work as is commonly believed. H.46 My position, however, is based upon a two-fold demonstration: first, that Ricardo, on matters of fundamental import and not merely casually, himself released the two simplifying assumptions; and second, that he himself applied the principles of allocation—demand-supply analysis, profit rate equalization—to a wide variety of issues in a sophisticated way. Needless to say, he did not consider all the possible situations where a relaxation of the two key assumptions has profound consequences, or all those that require treatment in terms of allocation theory. But, to relax the assumptions and to apply the theory of resource allocation to a broader range of issues is to follow along a route laid out by Ricardo himself, using tools of analysis provided by Ricardo. It does not imply illegitimate transfer from one general model to another; nor, to be more specific, does it require our reading into Ricardo of a body of Marshallian theory that in reality is not there. H.47 A further vital outcome of my analysis is that the profit rate in agriculture does not play the strategic role in the system envisaged in the various mathematical formulations of the Ricardian system outlined above. A number of illustrations reveal this key fact: technological improvement in the agricultural sector releases labor and capital for employment in other sectors, which are reabsorbed elsewhere with no alteration in their respective returns; the price of corn falls to the lower cost level and the return in agriculture (temporarily raised) comes back into line with the given general rate. Thus, despite a change in the "margin of cultivation," the profit rate remains constant. Similarly, freer corn importation leaves the general profit rate unchanged despite a contraction of the domestic margin. The process involves a fall in the price of corn and the transfer of resources to the manufacturing sector with no effect on the general profit rate. Precisely the same argument holds for the case of a corn-export subsidy; indeed, much of this analysis proceeded (for simplicity) on the assumption that agriculture is a constant cost industry, so that after expansion the corn price falls to the original cost level. H.48 Now Ricardo certainly insisted that if the price of luxury goods (silks, velvets, etc.) rose there would be no effect on profits "for nothing can affect profits but a rise in wages; silks and velvets are not consumed by the labourer, and therefore cannot raise wages."*41 But this is a quite separate analytical issue. Ricardo himself tried hard to keep the issues separate. Thus, he recognized the possibility that technical change might reduce the cost and price of corn and yet leave "money" wages unaffected—in which case the profit rate remains unchanged (although the commodity wage rises).*42 Similarly, an increase in the price of corn might leave the money wage unchanged with laborers reducing their consumption of other goods (in which case the profit rate is again unaffected).*43 With such a wide variety of possibilities it is quite essential not to confuse the effects on the profit rate induced by a change in the margin of agriculture itself—and I argue there are none—and the effects of a change in the price of corn working upon the general profit rate by way of money wages. It is only the attribution to Ricardo of a fixed (real) wage assumption that precludes this essential distinction.
Ricardo vs. Walras's CritiqueH.49 We are also in a position to examine the validity of Léon Walras's criticism of Ricardian procedure. Walras's complaint, it will be recalled,*44 was that the Ricardian system is underdetermined, even if rents are excluded from selling prices and wage costs are assumed given. The equation relating selling price to the sum of wage and interest charges cannot determine price unless interest charges are known, while interest charges are themselves determined by the difference between the unknown selling price and wage costs. Dmitriev's defense of Ricardo turned precisely upon the property that I have excluded, namely, that the general profit rate is yielded by that cost equation pertinent to the wage-goods sector, independently of all the other equations (provided the real wage is given the system is a determinate one). H.50 My defense of Ricardo against Walras's charge runs along completely different lines. The simple point is that Walras failed to recognize the key role played by demand in the Ricardian system. Marshall was well aware of this characteristic and went out of his way to make the point in his defense of Ricardo against the strictures of Walras, W.S. Jevons, Carl Menger and others. Marshall, in fact, found Ricardo's formulation preferable to that of Jevons, who "substitutes a catena of causes for mutual causation." Ricardo's doctrine "though unsystematic and open to many objections, seems to be more philosophic in principle and closer to the actual facts of life."*45 Unfortunately, "Jevons's criticisms of Ricardo achieved some apparently unfair dialectical triumphs, by assuming that Ricardo thought of value as governed by cost of production without reference to demand"—a "misconception of Ricardo... doing great harm in 1872,"*46 and one, we may add, still prevalent a century later.*47 H.51 In the light of these and related considerations it would appear that the contrasts between Ricardian and neo-classical procedures are not such as to justify the notion of a "dual development" or two separate streams of nineteenth-century thought.*48 To say this is not, however, to suggest an identity of procedure and certainly not an identity of preoccupation. It is to suggest rather the sharing of a common heritage or "central core," which amounts largely to allocation theory and mechanisms of demand-supply analysis.
V. Marx and RicardoH.52 I turn next to Marx. As noted above, the conception of a solution to distribution prior to pricing characterizes much of the literature relating to Marx. I believe that the same kind of argument that I have made against this interpretation in Ricardo's case applies here also: the relationship between distribution and pricing that Marx had in mind was precisely that which characterizes standard Ricardian theory. And in Marx's case too the erroneous interpretation flows both from the attribution to him of a fixed-wage assumption and from a methodological complexity that almost precisely parallels that discussed above regarding Ricardian procedure. H.53 The problem flows from the organization of Capital in terms of a sequence of volumes, the first based on the labor theory and the third based on prices of production—the famous "transformation" procedure—that suggests a solution to distribution in the "value" scheme prior to pricing. But Marx was concerned here, I would argue, with the "interpretation" of the source and nature of nonwage income and not with process analysis. The causal linkages of his system, particularly the distribution-pricing nexus, turn out to be identical with those of Ricardo's system. Specifically, the rate of surplus value or "exploitation" (which implies the wage rate) and the profit rate are both treated by Marx as variables (not as data in the analysis of pricing), whose levels are yielded as part of a general-equilibrium solution. There is no way of ruling out the potential effect of changes in the pattern of demand for final goods upon the rate of surplus value and thus upon profits. H.54 The rationale for Marx's precise procedural exposition in Capital is of particular interest. In general terms, Marx operated on the methodological rule that "all science would be superfluous if the outward appearance and the essence of things directly coincided."*49 To have outlined orthodox analysis first would have been handing. hostage to fortune; the ground had to be safely prepared to assure that readers would not draw "erroneous" conclusions from observation of the characteristics of the competitive general-equilibrium system. Marx had in mind primarily the source of profits. He isolated this source in surplus labor time—by which he implied that the capitalist had a "personally functionless role."*50 My main point is, however, that Marx in no way intended a causal dependency of the price scheme upon values. H.55 There is indeed much in Capital regarding the potential consequences of changes in the pattern of final demands. But it would be unjustified to play down Marx's profound conviction that:
'the social demand,' i.e., the factor which regulates the principle of demand, is essentially subject to the mutual relationship of the different classes and their respective economic position, notably therefore to, firstly, the ratio of total surplus-value to wages, and secondly, to the relation of the various parts into which the surplus-value is split up (profit, interest, ground-rent, taxes, etc.) H.56 That demand patterns were seen to be essentially governed by income distribution, Marx concluded, meant that "absolutely nothing can be explained by the relation of supply to demand before ascertaining the basis on which this relation rests."*51 The fact, however, that the primary determinants of tastes must be sought in the sphere of income distribution—which, in turn, is subject to constraints imposed by the social, political, and legal environment—in no way removes the necessity of appreciating how the capitalist system accommodates itself to disturbances, should they occur, in commodity or labor markets. To assume otherwise is to imply a totally sterile model. Marx never imposed upon himself so limited a frame of reference, for he did deal explicitly both with the effects of a change in the pattern of final demands (albeit in an incomplete analysis), and with those of a change in the wage rate. The following passage provides further evidence of a far greater degree of flexibility in Marx's vision than is so often attributed to him:
It would seem, then, that there is on the side of demand a certain magnitude of definite social wants which require for their satisfaction a definite quantity of a commodity on the market. But quantitatively, the definite social wants are very elastic and changing. Their fixedness is only apparent. If the means of subsistence were cheaper, or money-wages higher the labourers would buy more of them, and a greater social need would arise for them, leaving aside the paupers, etc., whose 'demand' is even below the narrowest limits of their physical wants... The limits within which the need for commodities in the market, the demand, differs quantitatively from the actual social need, naturally vary considerably for different commodities; what I mean is the difference between the demanded quantity of commodities and the quantity which would have been in demand at other money-prices or other money or living conditions of the buyers.*52
VI. Sraffa and RicardoH.57 Marx, on my reading, is a "Ricardian" theorist. By contrast, Sraffa is not. In Ricardo's scheme, re-establishment of an equilibrium system of relative prices following (for example) a variation in wages occurs by way of changes in output (allowing for the condition of equality between quantities demanded and supplied in commodity markets). In Sraffa's model, by contrast, there is no process analysis: re-establishment of equilibrium following a disturbance requires that the condition of profit-rate equality be satisfied, but nothing is said about the mechanism of adjustment; indeed, marginal adjustments are positively ruled out. The condition is, as it were, simply a mathematical prerequisite. Sraffa, unlike Ricardo, thus turned his back on Smithian process analysis. According to process analysis, re-establishment of equilibrium entails reactions by capitalists to profit-rate differentials, and they are manifested in expansions or contractions of the various industries. H.58 We come now to a further fundamental difference between the two structures. Sraffa does not provide a theory of distribution; one of the distributive variables must be given exogenously. However, a brief hint of great interest is given as to the most promising mode of procedure:
The choice of the wage as the independent variable in the preliminary stages [of Sraffa's work] was due to its being there regarded as consisting of specified necessaries determined by the physiological or social conditions which are independent of prices or the rate of profits. But as soon as the possibility of variations in the division of the product is admitted, this consideration loses much of its force. And when the wage is to be regarded as 'given' in terms of a more or less abstract standard, and does not acquire a definite meaning until the prices of commodities are determined, the position is reversed. The rate of profits, as a ratio, has a significance which is independent of any prices, and can well be 'given' before the prices are fixed. It is accordingly susceptible of being determined from outside the system of production, in particular by the level of the money rates of interest.*53 H.59 Now, this whole problem does not arise in Ricardo's theory for neither the profit rate nor the wage rate appear as data of his analysis. The wage rate is a variable determined by the general system of demand and supply relationships in the labor market, while the profit rate is merely a formal residual, since there exists a mutual dependency of the one upon the other. In short, Ricardo's model involves the use of something akin to the equilibrium conception of marginalist theory in the context of distribution. This is clearly implied in Ricardo's following statement:
I should think it of little importance whether the profits of stock or the wages of labour, were taxed. By taxing the profits of stock, you would probably alter the rate at which the funds for the maintenance of labour increase, and wages would be disproportioned to the state of that fund, by being too high. By taxing wages, the reward paid to the labourer would also be disproportioned to the state of that fund, by being too low. In the one case, by a fall, and in the other by a rise of money wages, the natural equilibrium between profits and wages would be restored.*54 I conclude that Sraffian theory stands apart from the Ricardian tradition.
VII. The Longevity of RicardianismH.60 A careful study of the reception of Ricardo's theorem on distribution shows that a firm and positive impression was left on the work of a number of authors normally regarded as "dissenters" par excellence—including T.R. Malthus, Samuel Bailey, Robert Torrens and Mountifort Longfield. This was the case despite their frequent formal criticisms of Ricardo and his followers and their declared objective to break new ground, or at least to refute the merit of Ricardo's divergencies from the Wealth of Nations.*55 It is also clear that the current practice of minimizing the adherence of J.R. McCulloch, J.S. Mill and Thomas De Quincey to Ricardianism—placing them in Smith's camp as far as concerns the theory of value and distribution—is unjustified. H.61 On the whole, the quality of the dissenting literature is disappointing. Much of the work reflects nothing but an unwillingness or inability torecognize different possible meanings of a word when used by different writers, or by the same writer in different contexts. The literature is also replete with sham controversy regarding the "cause" of various phenomena such as rent and values. This reflects, in turn, a failure to distinguish between the data and the variables of a model, and between interdependent, atemporal and nonsequential models and temporal, sequential models. H.62 If substantive matters relating to the fundamental theorem on distribution and its foundation in value theory are isolated, it then becomes clear that there was no rapid decline in Ricardo's authority. His revisions of Smithian theory constituted by and large a "success" in terms of acceptance by his immediate successors.*56 These conclusions regarding the longevity of the basic Ricardian theory will appear less surprising than on a first view if we bear in mind that the relativity dimension of value—reflecting the mechanisms of allocative adjustment—played a key role in Ricardian procedure. Ricardo was attempting to correct Smith on the latter's home ground. H.63 My investigation of the reception of Ricardian theory also suggests that many of the contributions of the dissenters would not have been considered objectionable by Ricardo. In many important instances the post-Ricardian critics simply misinterpreted Ricardo. Malthus believed, quite erroneously, that Ricardo maintained his cost theory of exchange value as an alternative to demand-supply theory, and that he had rejected Smith's demand-supply treatment of the labor market. Both Malthus and Longfield asserted, without justification, that in Ricardo's system rising capital with population unchanged leaves the profit rate unaffected—that the only cause of falling profits was resort to inferior land.*57 In his famous critique Samuel Bailey made the outrageous charge that Ricardo failed to appreciate the relativity dimension of exchange value.*58 Nassau Senior's objection to Ricardo (adopted also by Bailey and T.P. Thompson)—that to say "it is the price of[the] last portion of corn, which governs that of the remainder, is to mistake the effect for the cause"—and his adoption, as an alternative, of a demand-supply or "monopoly" explanation, fall into the same category.*59 The fact is that the Ricardians—and to a considerable degree Ricardo himself confirms the point—anticipated much of the substantive argument of the "critics." H.64 That the Ricardians—even Ricardo himself in the earlier cases—were able to see eye to eye with much of the apparently critical work on value by "dissenters" can be easily accounted for. Ricardo did not envisage his cost of production theory as an alternative to supply-demand analysis. On the other hand, the majority of "dissenters" continued to emphasize the cost determination of price. This is true of Bailey and Longfield, both of whom spoke of production costs as the main consideration in price determination. Longfield's analysis of changes in relative prices emphasized, as did Ricardo, variations of the labor input; and here too was seen to lie the justification of a labor measure. What, however, of W.F. Lloyd's famous contribution to marginal utility?*60 In this context the recent researches of Dr. Marian Bowley are particularly pertinent. As she puts the matter, "no revolutionary significance" was attached to discussions of the law of diminishing marginal utility and related conceptions. Moreover, "these contributions did not affect the main classical conclusions as to the nature of market and natural prices and their determination."*61 This is quite convincing. While Ricardo's main interests lay in long-run price determination, his economics hinged upon the operation of the competitive mechanism involving demand-supply analysis. His rejection of demand-supply theory did not apply to the particular version elaborated by Longfield, and Longfield himself appreciated Ricardo's objections to the "indefinite" and "vague" expression "proportion between the demand and supply" as unhelpful in the prediction of market price.*62 Furthermore, Lloyd's analysis of marginal utility is not inconsistent with a cost or even a labor theory, and was not so envisaged by Lloyd himself: "if labour becomes more effective, so that commodities of all kinds shall be produced in a degree of abundance greater in proportion to the wants of mankind, all sorts of commodities, though exchangeable in the same proportions as before for each other, could be said to have become less valuable."*63 This statement is quite consistent with a cost or labor theory of exchange value. H.65 To what extent may the conception of interest as a return to "abstinence" developed by G.P. Scrope, Samuel Read and Nassau Senior be interpreted as a sharp break with Ricardian procedures?*64 To what extent would Ricardo have objected to an analysis of the precise nature of the savings supply function? The conception in Ricardo's work of profits as residual is, I believe, little more than a formal consequence of the implicit presumption that the only contractual payment is that made to labor. There can be no doubt that Ricardo recognized the necessity of interest in the limiting case. More importantly, he took into account the effect of a declining profit rate on accumulation. It is true that he gave no name to the effect, but it is by no means certain that he would have objected to the investigation of the time preference notion that the so-called "dissenters" insisted upon. John Stuart Mill found no difficulty in subscribing at one and the same time to the inverse wage-profit relationship and to the abstinence conception. H.66 It is true that as one illustration of what he called Mill's "eclectic syncretism" Marx referred to the fact that Mill "accepts on the one hand Ricardo's theory of profit, and annexes on the other Senior's 'remuneration of abstinence.' He is as much at home in absurd contraditions as he feels at sea in the Hegelian contradiction, the source of all dialectic."*65 But there does not appear to be good reason in logic to avoid the simultaneous adoption of a concept of profit envisaged as a formal residual arising from surplus labor time, and the abstinence theory; the one is the basis for investment demand, while the other relates to capital-supply conditions and contributes therefore to the actual determination of surplus labor time. Marx did not succeed in his fundamental objective to demonstrate, by his preliminary formulation in Capital of a value structure, that the capitalist has a personally functionless role. H.67 What, finally, of the widespread application of market demand-supply analysis to long-run wage determination, as for example by Malthus, Longfield, Torrens, Read, Scrope and Senior? Here, too, there occurred no break-away. The story would be a different one were it the case, as is apparently quite generally believed, that the subsistence wage played a key role in Ricardo's work, not only in the context of his growth model but also in basic applications such as wage taxation. But this is far from an accurate perspective. Ricardo's model was a growth model in the true sense—with wages and profits above their respective minima, which become relevant only in the stationary state.
VIII. The Marxian Interpretation of the Dissension:
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The cuneiform inscription in the Liberty Fund logo is the earliest-known written appearance of the word "freedom" (amagi), or "liberty." It is taken from a clay document written about 2300 B.C. in the Sumerian city-state of Lagash.
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