In so far as machinery develops with the accumulation of social knowledge and productive power generally, it is not in labour but in capital that general social labour is represented. Society’s productivity is measured in fixed capital, exists within it in an objectified form; and conversely, the productivity of capital evolves in step with this general progress that capital appropriates gratis. [...] the means of labour, in its material aspect, loses its immediate form and opposes the worker materially as capital. Science thus appears, in the machine, as something alien and exterior to the worker; and living labour is subsumed under objectified labour, which acts independently. The worker appears to be superfluous in so far as his action is not determined by the needs of capital.