The result of our digression is, incidentally, that the production of the means of communication, of the physical conditions of circulation, is put into the category of the production of fixed capital, and hence does not constitute a special case. Meanwhile, and incidentally, there opened up for us the prospect, which cannot be sharply defined yet at this point, of a specific relation of capital to the communal, general conditions of social production, as distinct from the conditions of a particular capital and its particular production process (Marx, edn 1973, 533).