Previously I have discussed how Marx’s well known aggregate equalities have been shown to hold under single-system interpretations of his theory of value. In the July 2018 edition of the Cambridge Journal of Economics, there is a noteworthy paper by Ian Wright that reconciles the classical labor theory of value with Marx’s prices of production within a dual-system framework. As with single-system interpretations, Marx’s equalities also hold under Wright’s approach. However, they do so in a different way. Here, I want to offer some thoughts on the difference.
A perennial question for Marxists is how to overturn capitalism. Will institutional changes that improve the lot of workers but fall short of ending capitalism immediately help or harm this cause? To the extent that social struggle is a learning-by-doing process, it may be that the securing of small gains can whet the appetite for more significant gains and that institutional reforms of a transformational nature can place revolution on a more secure footing if and when it does occur. But there is also the possibility of complacency in which workers come to tolerate capitalism so long as their own situation is not so dire.
Modern Monetary Theory (MMT) offers an understanding of sovereign (and non-sovereign) currencies that is applicable to a wide range of economic systems, including capitalist and socialist ones. Irrespective of the personal political preferences of its proponents, the theoretical framework in itself is neutral on the appropriate balance between public sector and private sector activity, or the relative merits of capitalism and socialism. In contrast to neoclassical theory, which starts from a general presumption in favor of private market-based activity except where the existence of market failure in excess of government failure can be explicitly established, MMT as a theory characterizes the appropriate mix of public and private activity as a social (or political) choice.