Abstract
Purpose: Describing how radical constructivism was introduced to communication science and analyzing why it has not yet become a mainstream endeavour. Situation: Before radical constructivism entered the relevant debates in communication sciences, moderate constructivist positions had already been developed. Problem: Radical constructivists’ argumentation has often been provocative and exaggerating in style, and extreme in its position. This has provoked harsh reactions within the mainstream scientific community. Several argumentative strategies have been used to degrade radical constructivist arguments and their relevance. Solution: Beyond such rhetorical devices, radical constructivism has become established within the field of communication science, although it has not become mainstream. One should probably not even wish to make radical constructivism a mainstream approach in case it loses its sceptical ability for second-order-observation