To strengthen and complement:
There are many ways of knowing that nature, life, and existence is part of an open system through the following observed and or experience phenomena:
1.0 Dynamic process of evolution.
2.0 Dynamic process of emergence
3.0 Dynamic process of phase transition
4.0 Continuity and Infinity or infinite potentialities of possibilities
5.0 Dynamic process of being and becoming
6.0 Locality and non-locality
7.0 Many realms and worlds
8.0 Eternal process of evolution
9.0 However, the most obvious and simply through reason (and or experience): ontology which implies existence which implied continuity which implied dynamic evolution (which implied flux and impermanent) which implied continuity of potentialities of possibilities which implied infinite potentialities of possibilities which implied eternity which implied open system (i.e. closed system cannot have or contain infinite potentialities of possibilities). For example, if there is no dynamic continuity (such as dynamic states of being. Static state of being would mean such as dead, no spectra-field, or no longer exist. In other words. there is no such things as static state of being (i.e. existence is flux and impermanent) since this would mean there is no or no longer existence. And since All That Exist and Ever Exist is omnipresent, this implied feedback which implied epistemology or information process. As such, 1.0-8.0 are phenomena or manifestation within open system.
and among others.