Just think of it: you gave one tomato to your neighbour and received 10 at your doorstep; then you shared more but got exponentially more (this is a sign of a society whose individuals are caring and kind).
From Respect Is Not Costly, the Ingredients Are Universal.
In the kindness cycle, a respectful individual gives away part of his own share; it passes from one to another, each passing on what is "beyond his need", until it reaches the one who needs it, "the eligible person who does not ask others for help". The cycle keeps going only while "more resources flow into the passing chain than drop out of it". The measure asks, for each society, how much flows into the chain and how much drops out of it.
From The ultimate kindness cycle.
