Jürger Habermas has been attempting to develop a critical theory of society with a practical intent, on the basis of communication and a theory of the evolution of practical and moral social competence. He thinks that the studies of language rules (or capacities) and language learning (or acquisition) from Piaget, Searle, Chomsky and others have and continue to provide models elsewhere - from productive activity to moral activity. Moreover, the models are said to extend to social learning, which will be exhibited in the development of society.
Furthermore, speech acts, which are to be described by a theory of pragmatics, anticipate the establishment of ideal speech situations, which are the avenue to ‘truth, freedom, and Justice.'