Relational constructivism can be perceived as a relational consequence of radical constructivism. In contrary to social constructivism, it picks up the epistemological threads and maintains the radical constructivist idea that humans cannot overcome their limited conditions of reception (i.e. self-referentially operating cognition). Therefore, humans are not able to come to objective conclusions about the world. In spite of the subjectivity of human constructions of reality, relational constructivism focusses on the relational conditions applying to human perceptional processes. According to Björn Kraus: It is substantial for relational constructivism that it basically originates from an epistemological point of view, thus from the subject and its construction processes. Coming from this perspective it then focusses on the (not only social, but also material) relations under which these cognitive construction processes are performed. Consequently, it's not only about social construction processes, but about cognitive construction processes performed under certain relational conditions. Lifeworld and life conditions as relational constructions In the course of recent constructivist discourses, a discussion about the term lifeworld took place. Björn Kraus' relational-constructivist version of the lifeworld term considers its phenomenological roots (Husserl and Schütz), but expands it within the range of epistemological constructivist theory building. In consequence, a new approach is created, which focusses on the individual perspective upon the lifeworld term and takes account of social and material environmental conditions and their relevance, as emphasized, for example, by Jürgen Habermas. Essential therefore is Kraus' basic assumption that cognitive development depends on two determining factors. A person's own reality is their subjective construct, but this construct—in spite of all subjectivity—is not random: because a person is still linked to their environment, their own reality is influenced by the conditions of this environment (German: Grundsätzliche Doppelbindung menschlicher Strukturentwicklung). Building up on this point of view, a separation of individual perception and the social and material environmental conditions is made possible. Kraus accordingly picks up the term lifeworld, adds the term "life conditions" (German: Lebenslage; originally introduced by philosophers Otto Neurath in 1931 as well as Gerhard Weisser in 1956) and opposes the two terms to each other. By this means, lifeworld describes a person's subjectively experienced world, whereas life conditions describe the person's actual circumstances in life. Accordingly, it could be said a person's lifeworld is built depending on their particular life conditions. More precisely, the life conditions include the material and immaterial living circumstances as for example employment situation, availability