We, Homo Sapiens, Homo Faber

Though he does not systematically develop it as such, Marx's concept of Class Consciousness may be the first substantive Philosophical consideration of the concept of We.  Hitherto, and still usually, the concept of trans-personal Subjectivity is either a mere aggregate of Is, or a universal I.  In contrast, Marx's I is not the subject of cognition, but the agent of production.  Accordingly, it can be conceived as conjoined with other such Is while maintaining its distinctiveness.  In other words, corresponding to the historical emergence of Class Consciousness is the theoretical innovation of the possibility of We, facilitated by the transformation of Homo Sapiens into Homo Faber.