11.1 Pattern: The abstract order of couplings, i.e. the set and configuration of relations between the elements/components of a composite unit/system, shall be called a pattern.
11.2 Structure: The totality of the concrete components/elements of a composite unit (i.e. a system) together with the specific patterns of their couplings (= relations) should be called the structure of the respective composite unit/system.
Structures and patterns
11.3 The elements/components of composite units/systems can be coupled (= ordered) by the Observer in space and time, whereby this is always done from the place and time of the observer (= Perspective).
11.4 If we abstract from the observer or the process of observing, then the constructs of space and time appear as absolute dimensions in which the world is located and takes place.
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SIMON, Fritz B., 2018. Formen: zur Kopplung von Organismus, Psyche und sozialen Systemen. Heidelberg: Carl-Auer-Systeme Verlag. Systemische Horizonte. ISBNÂ 978-3-8497-0225-0302, p. 37
Define a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and updated automatically.