The topic of knowledge and consciousness is multidisciplinary. In the human sciences, it has been studied by various scientific and intellectual communities. The sciences of philosophy, sociology, psychology, biology, and language and communication have offered (sometimes independently of each other) numerous perspectives on this wide topic while sharing many similarities. Constructivism can be considered as an umbrella term that includes a number of subject-centered theories that give a precise, paradigmatically-shaped answer to the question about the functions of knowledge and consciousness, and their perception of their world. From the constructivist perspective, subjective instrumentarium of knowledge and consciousness helps individuals...