I have searched far and wide to find examples of positive sum games positive sum human interactivity.
Unless I am completely wrong, I can't find any such examples. Commerce may be the only human activity that is clearly a positive sum game.
Many people in psychology and negotiation talk about win-win and positive sum interactions among people and I am sure those are true however it is very hard to describe what is going on, in a way that it would make such interactions positive sum. We know how easily people can become angry, vindicative or permanently hostile so we know that anything else is proabably win-win positive sum.
I invite my readers to think of positive sum games, activities and behaviors because we have no chance of explaining to the many weak minded or brain-dead lefties why income redistribution is counterproductive and why commercial societies are so vital to our health and well-being. We have to explained to them the core element of positive sum in powerful imagery.