> "but why shouldn't that be the case? [...] so as not to cause anarchy with people killing each other for some food." I feel like you answered your own quest

> "but why shouldn't that be the case? [...] so as not to cause anarchy with people killing each other for some food." I feel like you answered your own question there. It shouldn't be the case because with anarchy everyone loses. You give your sibling some of your birthday cake because if you don't and they throw the cake on the floor in anger, you don't get any of your cake either, and if you do then later on at their birthday they give you their cake. In one case you both lose, in the other case you both gain.