1.

The naive question is, of course, what is a system. Accordingly, it is not answered at all in systems theory, but replaced by other questions.

2.

This theoretical understanding is made manageable by the 5-C formula: Context ... Consequence ...

3.

"Nemo (Odysseus, Od. 9,366), the captain (gubernator = kybernaetaes), who makes his voyages in an invisible ship below the surface of the visibly perceptible (the phainomenon), therefore in secret (mae-phaino). Mnemo combines memory, mnaemo-synae and appearance in memory: mnae-phaino- -> phaino-menon, as an emergent (phaino-menon) in the form (mor-phae) of what is seen (phos) and heard (phonae) (A. Goppold) " (A. Goppold)