“…In the same spirit, Vygotsky (1987) notes that thought only becomes in speech; but as speech, a physical thing, unfolds, the environment is changed, and, therefore, in a reciprocal movement, experience [pereživanie] and thinking (Vygotsky, 2001). In the Spinozist-Marxian approach taken here, there is no mediator (Negri, 1991;Roth & Jornet, 2019), just a double movement from abstract (thinking) to concrete (speech) and from concrete (speech) to abstract (thinking). Thus, just as the commodity does not mediate between the parties, because at the instant of the exchange it is in the hands of both, so the sign is not mediating between Jeanne and Mario because the (physical) word is the same for both; and just as the commodity does not mediate between exchange-value and use-value because these are manifestations of the social relation, so the sign does not mediate between Jeanne and Mario, as some suggest (e.g., Arievitch & Stetsenko, 2014), because any differences are characteristics of the social relation and mind (e.g.…”