An exploitative relationship is one in which the exploiter gains an unfair advantage at the expense of the victim's interests, and the exploited party accepts it without doing so, even if it can resolve the relationship on its own.This time, a group at the University of Tokyo has theoretically shown that as two individuals learn from each other and pursue their own interests, an exploitation relationship arises between the two, who are symmetrical.
In the mathematical model "Prisoner's Dilemma Game", which expresses the conflict that individuals are forced to choose between selfish behavior and altruistic behavior, which is often seen in society, betraying the other party brings benefits to the other party. Cooperation can bring more benefits to the other party than can be gained by betrayal.
So far, studies in the prisoner's dilemma have not elucidated the mechanism by which asymmetric exploitation relationships occur.As a characteristic of highly intelligent creatures such as humans, the researchers assume a situation in which an individual uses his or her own behavior according to the behavior of the other person, and are more profitable from the experience gained by repeating the game. We formulated the process of learning so as to obtain.Then, we simulated what kind of relationship is formed by learning.
The results show that exploitation relationships can occur between them, even though they are learning to increase their own interests as well.When the two, who initially had similar strategies, learn from each other, those with a narrow heart are more narrow-minded by learning a tolerant partner, and those who are tolerant are more likely to learn a narrow-minded partner. It is said to be tolerant, and small strategic differences are amplified and established as exploitation.In other words, he discovered a "symmetry breaking" in which an acquired exploitation relationship occurs between the two, which are almost symmetric at first.
The results of this study, which show that exploitation can occur despite the symmetry of learning, simply by pursuing their own interests, provide a new perspective on the origin of exploitation in society. ..
Paper information:[Physical Review Research] Emergence of Exploitation as Symmetry Breaking in Iterated Prisoner's Dilemma
