6) Chapter 15: The Machine¶
Core Argument¶
In Chapter 15 of Capital Volume 1, Marx dissects the machine not as a neutral tool of liberation but as a specific weapon of capital. Machinery is introduced under capitalism solely to increase surplus-value, first by cheapening commodities and then by reducing the value of labour-power itself. The individual capitalist, driven by competition, adopts machinery to cut costs and capture super-profits; this compels all capitalists to follow suit, generalising productivity gains. As the commodities workers consume become cheaper, the value of labour-power falls, and relative surplus-value rises. Marx traces the dialectical development of the machine: it replaces the worker handling a single tool with a mechanism operating many tools, internalising the division of labour and imposing an objective, continuous production process that confronts workers as an alien, hostile power.
The capitalist only introduces machinery if its cost is less than the wages it displaces. Where wages are low, investment in technology is suppressed, holding back productivity. Where workers are strong and wages high, machinery is deployed as a weapon against strikes, rendering skilled labour superfluous and intensifying competition among workers. Marx rejects the bourgeois claim that machinery’s harmful effects are merely temporary or that displaced workers will be reabsorbed by new industries; instead, workers are thrown onto the labour market, forced into inferior, overcrowded trades, and face starvation and misery.
At its height, capitalism was a revolutionary force, smashing barriers to productive development and creating the material conditions for socialism. Machinery enabled large-scale industry and broke physical limits on exploitation, allowing surplus-value extraction through productivity gains rather than driving workers beyond physiological limits. Large-scale industry also transformed social superstructures, particularly family relations, by drawing women and children into socialised production outside the domestic sphere, creating the potential for a higher form of family relations—though under capitalism, women remain doubly exploited through wage labour and unpaid domestic work.
Yet capitalism’s progressive role turned contradictory. Private ownership and competition became fetters on productive forces. Replacing labour with machinery kills the source of surplus-value, generating a tendency for the rate of profit to fall. Automation and unemployment simultaneously destroy the market, as wages form the demand for goods. This produces a cycle of feverish production, glut, contraction, and crisis rooted in overproduction: productive capacity outstrips workers’ ability to buy back what is produced. Capitalism also undermines its own foundations by robbing both the worker and the soil, creating ecological destruction alongside economic crisis. Yet by maturing the material conditions and social combinations of production, capitalism ripens both the elements for a new society and the forces tending toward its overthrow.