Here we found that we had become human in small groups to begin with, in our primary stage of existence. Until relatively recent times, we lived among our familiars in bands of maybe 25 to 50. Our anthropological ancestors roamed free in a wilderness that was home and that provided for them. Of course things have changed since then, but as a species we have never outgrown the need to live in the context of culture. It is organized customs that do the adapting for humans.
Customs are practices passed down through the generations.
Every culture is characterized by particular sets of stable habits. So it will be with us, if we get to live long enough to gain the necessary focus and momentum. A community develops a way of life. It can take many forms. However, it has to be fitting to place and continually capable of change for changing times.