In the Fragment on Machines, these two ideas – that the driving force of production is knowledge, and that knowledge stored in machines is social – led Marx to the following conclusions.
First, in a heavily mechanized capitalism, boosting productivity through better knowledge is a much more attractive source of profit than extending the working day, or speeding up labour: longer days consume more energy, speed-ups hit the limits of human dexterity and stamina. But a knowledge solution is cheap and limitless.
Second, Marx argued, knowledge-driven capitalism cannot support a price mechanism whereby the value of something is dictated by the value of the inputs needed to produce it. It is impossible to properly value inputs when they come in the form of social knowledge. Knowledge-driven production tends towards the unlimited creation of wealth, independent of the labour expended. But the normal capitalist system is based on prices determined by input costs, and assumes all inputs come in limited supply.
For Marx, knowledge-based capitalism creates a contradiction – between the ‘forces of production’ and the ‘social relations’. These form ‘the material conditions to blow [capitalism’s] foundation sky-high’. Furthermore, capitalism of this type is forced to develop the intellectual power of the worker. It will tend to reduce working hours (or halt their extension), leaving time for workers to develop artistic and scientific talents outside work, which become essential to the economic model itself. Finally Marx throws in a new concept, which appears nowhere else – before or after – in his entire writings: ‘the general intellect’. When we measure the development of technology, he writes, we are measuring the extent to which ‘general social knowledge has become a force of production … under the control of the general intellect’.