Phenomena or noumena? Objective and subjective aspects in knowledge organization

Main objectives and subjective aspects are traceable in the concepts of information, document, knowledge, knowledge organization and levels of reality. Objective and subjective aspects are both present in each of these entities, as it is sometimes implicitly recognized even by some of the authors that usually underline exclusively the objective or the subjective elements of these entities. "Moderate constructivism" is the synthesis of objectivism and subjectivism that consists in recognizing that reality is neither completely given nor completely built and it constitutes (beyond too marked pseudo-oppositions) the paradigm today de facto dominant both in epistemology studies and in knowledge organization studies.