The validity of labour value, as Marx formulated it, had its end recently decreed because the application of new technologies would have given to information and knowledge the prevalence in the production of commodities and even of value. This article aims to appraise if and how these changes actually imply a disruption with Marx’ theory, taking into account not only its general form in Book I of Capital but also the more complex forms in Book III. In this final point of the work the meaning of value and of the general determinations of labour is inverted, requiring a more refined understanding of Marx thought, and then, of present circumstances.