And this niceness, forgiveness and non-envious behaviour pays; not only in monetary terms like our game, but even in the real world, from an evolutionary perspective.
After a lifetime of interacting with someone who engages in anxious niceness, what we find is that most people on the receiving end are racial minorities.
He extolled their niceness, snapping them as they basked companionably on warm mud or on a favourite bank of long grass, the forefoot of one embracing the back of another.