5
Reciprocal altruism is still being used, but is much better than solitude. Being unfairly used is the lesson that teaches us better skills to chose the company we keep.
All I hear is "I don't want to play Donkey Kong, he keeps throwing barrels, I'll play when he stops".
Just accept it's a jumping game and the skill is in the timing. DK without barrels is just a lonely walk up a hill.