This paper analyses the question concerning the scope, possibility and legitimation of critical discourse. For this we understand the kind of discourse in which a single individual or a minority group sustain claims against what is considered correct by a majority. We concentrate in a controversy where this problem receives a focal attention: the debate between Habermas and Gadamer. The problem with critical discourse there is its apparent paradoxical status. On the one side, it is questioned whether the conditions of meaning elucidated by hermeneutics does not make critical discourse impossible. Hermeneutics replies asking whether the scope of critical discourse critical theory is committed to is not beyond the condition of any possible discourse. Our analysis of the dispute elucidates a common assumption to both perspectives: the similar role both attribute to implicit recognition (although understood in a very different material way) in the constitution of the symbolic domain. We take profit of the inscription of Wittgenstein in the debate in order to asses critically the controversy through the analysis of this assumption. Indexada en: Publindex (categoría A2); Scielo Colombia, Philosopher´s Index; Ulrich´s Web; Latindex; New Jour (Electronic Journal Nwesletter) y MLA (Modern Language Association). http://discusionesfilosoficas.ucaldas.edu.co/