What you are calling fairness is a biologically involved survival mechanism.
You see it in elephants as well.
A culture of tribal sharing, ensures the survival of the tribe, and the survival of the individual. If I share with you today, when I am hungry tomorrow you will reciprocate. Not out of altruism, but out of knowledge that tomorrow I might need the same consideration.
Mammals have an innate sense of fairness. Have you seen this video of primates studied for this sense?
https://www.youtube.com/watch?v=-KSryJXDpZo
What you are calling fairness is a biologically involved survival mechanism.
You see it in elephants as well.
A culture of tribal sharing, ensures the survival of the tribe, and the survival of the individual. If I share with you today, when I am hungry tomorrow you will reciprocate. Not out of altruism, but out of knowledge that tomorrow I might need the same consideration.