Trying to advocate an appropriate use of the binarism in relation with a correct conception of the "versus", we consider the story of the Two, which requires the Three and, beyond, the Many. The symmetrical organization of this Two is destabilized by the theory of the mark (marked / unmarked), introducing the dynamics inside of the versus' formal fixity. Then, it's necessary to consider the role of laminated structure, of the concepts "dominant" and "oscillation", and study the relation between circumscription and vagueness, discrete and linked.