George Price created a mathematical theory that altruism works with game theory in evolutionary terms. In an attempt to prove the theory either way he adopted i

George Price created a mathematical theory that altruism works with game theory in evolutionary terms. In an attempt to prove the theory either way he adopted increasingly altruistic behaviour and become more religiously devout. He ended up broke having given away all his possessions, becoming depressed due to the number of times he was taken advantage of. He killed himself in 1975. His atheist colleague converted to Christianity. There are plenty of ways to interpret the models that economists create - if the Price equation can model altruism in terms of game theory, you're perfectly correct that the definition of "best interests" is a variable.