The fascinating thing about standard economic stories is exactly that: they assume that everybody wants that kind of closure. That all human relations are forms of exchange, because if everything is an exchange then it's true that we're both equals. We walk up, I give you something, you give me something, and we walk away. Or I give you something, you don't give me something right now, and you owe me. So if we have any ongoing relationships at all, it's because somebody is in debt.
The angle of entry of the ball equals the angle of release. You cannot deny the laws of science.
The sum of the parts equals less than the whole. Or the howl. Or the how. Or the hole.
For existential mathematics, which does not exist, would probably propose this equation: the value of coincidence equals the degree of its improbability.
I discovered when we suffer, we suffer as equals, and in their capacity to suffer, a dog, is a pig, is a bear, is a boy