What makes capitalism capitalism?

So I had a debate (the sort of debate you can have with 140 characters) in Twitter a few days ago with Unlearning Economics and Jonathan Finegold, among others (links are to blogs not to the twitt feeds). The main question was the definition of capitalism. It is a peculiar feature of modern economics that very few mainstream authors would actually discuss the issue directly, even if there has been a revival of some related issues associated to the relevance of institutions (vis-à-vis geography and culture) in the rise of the West. Robert Heilbronner used to say that the best kept secret in economics is that it was is about the study of capitalism.

I'm not going to get too much into the topic here, but it is worth a brief summary. As discussed before (here) in the blog, the surplus approach suggests that economics is the study of the material reproduction of societies. The existence of a surplus allows for specialization and progress, and the ways in which the surplus is produced and distributed is central for the understanding of reproduction. Broadly speaking, what Marx referred to as a mode of production is comprised of two elements, the material conditions of production or the forces of production, which include the means of production that incorporate a certain technology, and the social relations of production, which include the organization of production and the customs, laws and rules that guarantee the property of the means of production.

For Marx the manifestation of the capitalistic character of the manufacturing process is that the workers do not own the means of production and must sell their labor power. The reason being that an essential condition for capitalists to be able to buy labor power is that workers do not own means of production and are forced to sell in the market their labor force (see Capital, Volume I, Part II, chapter 6). The essence of the capitalist system is that workers sell their labor force, and are in this particular way exploited. That's the specific way in which capitalists obtain a surplus beyond what is necessary for social reproduction.

On the notion of the mode of production Marx perceptively tells us (Vol. I, Book I, Part I, ch. 1) that:

"The mode of production in which the product takes the form of a commodity, or is produced directly for exchange, is the most general and most embryonic form of bourgeois production. It therefore makes its appearance at an early date in history, though not in the same predominating and characteristic manner as now-a-days. 

Even Adam Smith and Ricardo, the best representatives of the school, ... treat this mode of production as one eternally fixed by Nature for every state of society ..."

That's exactly what Max Weber (and many modern authors too, by the way) does. He often refers to capitalism when discussing the middle ages in Western Europe, or ancient China, or the Roman Empire (see for example his General Economic History). This naturalization of capitalism is also typical of mainstream authors, that tend to confuse the existence of markets, or the profit motive, with capitalism.

Production for exchange in the market existed for sure before modern times, and so did exploitation. But the difference with previous modes of production is not simply the more developed material conditions of production associated with the factory system and machinery. It is the specific social arrangement that allows capitalists to control the means of production and extract a surplus from workers that must sell labor power in the market, and are liable of being exploited (more or less according to their bargaining power) that sets capitalism apart. So it is the way in which labor is exploited, one in which workers sell labor power in the market, that makes capitalism capitalism, so to speak [this has interesting implications in the Dobb and Sweezy debates on the transition from feudalism to capitalism, for example, that I'll leave for another post].

Note that while this definition of capitalism is clearly Marxist it builds up on the surplus approach, and is one of (not the only one either) the main contributions of Marx to the surplus tradition (he was critical of the bourgeois elements of classical economics, but built on the analytical structure of the school). In fact, Turgot and Smith both describe the evolution of societies in terms of stages related to the mode of production. It is the economic character of production that governs other aspects of social relations. The four stages were hunting, pasturage, agriculture and commerce. Bill McColloch suggests (see here) quite convincingly that Marx builds on the work of Steaurt.

Also, note that the notion that the profit motive is the differentia specifica of capitalism is tied to the typical methodological individualistic stance of the mainstream. It is hard to say, however, that individuals (merchants, for example) in previous modes of production (say in the ancient mode of production, which was based on slavery) had no desire for profits. If they did, however, what's different about capitalism? That's also why all the alternative theories of history (to the surplus approach) tend to fetichize the role of the entrepreneur (see Landes's last book for the epitome of that approach, which was also displayed in the History Channel's The Men Who Built America). It's the return of Carlyle's hero-worship and the Great Men theory of history.