Reentry (epistemology)
As a re-entry operation in the calculus is Laws of Form of George Spencer Brown referred by which a distinction is reintroduced on one side of the distinction.
description
In his calculus, Spencer Brown differentiates between an included marked space and an excluded unmarked page. He speaks of a re-entry when the distinction is copied into the designated page.
Applications
Niklas Luhmann has adapted the concept in his theory. Luhmann interprets this operation in his systems theory as an observation : an observer distinguishes something from the rest of the world and names what is so different, while at the same time he can not name the underlying distinction and the rest of the world . This enables the observing system to handle the operation of discrimination in itself, thereby creating a) an observed distinction and b) an observational distinction. The observer's dilemma - according to which the observer loses sight of something (other) with every observation - is thus solved (sociologically).
example
Risk is based on the distinction between risk and danger; (beyond this distinction is fate). Within the distinction there is a risk to ignore the risk. If I can prevent a hazard, I reduce the risk. If I take the risk of not taking the risk, I am guilty. The secondary risk is therefore not an option, as it primarily appears.
literature
- George Spencer Brown: Laws of Form , Bohmeier, Lübeck 1997, ISBN 3-89094-321-7
- Holm von Egidy: Observation of Reality , Munich 2001, p. 98, ISBN 978-3-89670-328-6 ( dissertation supervised by Matthias Varga von Kibéd )
- Niklas Luhmann: The science of society . 1990. p. 83 ff., P. 479 ff.
- Niklas Luhmann: Observing Reentries . 1993
- Niklas Luhmann: Introduction to Systems Theory / Niklas Luhmann. Dirk Baecker (ed.). - 1st edition. - Heidelberg: Carl-Auer-Systeme-Verl., 2002. S 80 ff.