FEATURES OF EMERGENCE. The common characteristics are: “(1) radical novelty (features not previously observed in systems); (2) coherence or correlation (meaning integrated wholes that maintain themselves over some period of time); (3) A global or macro “level” (i.e. there is some property of “wholeness”); (4) it is the product of a dynamical process (it evolves); and (5) it is “ostensive” (it can be perceived).” (Corning, 2002).
https://en.m.wikipedia.org/wiki/Emergence