As an actor, you want as much variety as you can muster up. Otherwise you just keep playing the same chord over and over again.
To each other, we were as normal and nice as the smell of bread. We were just a family. In a family even exaggerations make perfect sense.
Basins of attraction, of self organization, show up as well in our complex social environment, in human organizations. Here again, while we cannot predict the result of any given input, we can say that it will likely fall within one of several areas.