Synergy starts where the physical world is at its end. Physics tells us, that energy and matter can neither be created nor destroyed, only transformed. This makes our world basically a ZeroSumGame.
But life, esp. in the form of communities, makes a clever step forward. It uses information to gain special advantages by planning the future and by organizing collaboration. Information about the past is transformed to "useful information" (=knowledge) about the future. Collaboration is secured by systems of fair distribution of advantages. So the whole and its parts profit at the same time.
There may be singular actions where a community is able to create synergy, but much more important are patterns that may be reused again and again. These discoveries, inventions and developments form a culture that is the foundation of a community.
While we do have "thermo dynamics", telling us about energy processes, we don't yet have "social dynamics", that could tell us about social (community) processes in the same detail.