The reproduction of labour power thus reveals as its sine qua non not only the reproduction of its ‘skills’ but also the reproduction of its subjecti… - Louis Althusser

What do children learn at school? They go varying distances in their studies, but at any rate they learn to read, to write and to add - i.e. a number of techniques, and a number of other things as well, including elements (which may be rudimentary or on the contrary thoroughgoing) of scientific' or 'literary culture', which are directly useful in the different jobs in production (one instruction for manual workers, another for technicians, a third for engineers, a final one for higher management, etc.). Thus they learn 'know-how'.

Marx compellingly proved it in Capital Volume Two, that no production is possible which does not allow for the reproduction of the material conditions of productions: the reproduction of the means of production.

The proletariat must seize state power in order to destroy the existing bourgeois state apparatus and, in a first phase, replace it with a quite different, proletarian, state apparatus, then in later phases set in motion a radical process, that of the destruction of the state.