The Concept Of Reciprocal Agreement
Reciprocity was also a cornerstone of ancient Greece. In Homeric Greece, citizens left mutualists as a form of transaction, for lack of a formal governmental or commercial system.  In Homers Ilias, he illustrates several examples of reciprocal transactions in the form of donations. For example, glaucus and diomedes exchange armor in Book VI of the Iliae when they discover that their grandfathers were friends.  However, there was a time when direct reciprocity was not possible, especially in times of great distress, when a citizen had nothing to repay. Thus, at that time, delayed reciprocity was also predominant in Greek culture. Deferred reciprocity refers to giving gifts or favors to a person, with the understanding that he will repay that favor at another time when the original donor will be in great distress. This form of reciprocity was widely used by travelers, especially in the Odyssey.  Odysseus often had to rely on the kindness of human strangers and other mythological creatures to secure resources during his journey.
Fehr and Gächter (2000) showed that individuals, when acting in a mutual framework, are more likely to deviate from purely selfish behaviors than in other social contexts. Generosity is often repaid with a disproportionate amount of kindness and cooperation and betrayal, with a disproportionate amount of hostility and revenge, which can far exceed the amounts determined or predicted by traditional economic models of rational interest. In addition, reciprocal trends are often observed in situations where transaction costs related to certain reciprocal measures are high and current or future material rewards are not expected. Whether it is a selfish or reciprocal action, the overall result depends particularly on the context; In markets or market-like scenarios characterized by competitiveness and incomplete contracts, reciprocity tends to be achieved through personal interest.  The reciprocity rule works in two ways in mutual concessions. First, a person is pressured to make a concession for another under the rule itself. Second, because the person who admits at the outset can expect the other person to give in in return, that person is free to make the concession. If there was no social pressure to make the concession, an individual risks giving up something and getting nothing in return. Reciprocal concessions are a procedure that can promote compromise within a group, allowing individuals to focus their efforts on achieving a common goal. Reciprocal concessions promote compromise within a group, which makes it possible to set aside the initial and irreconcilable wishes of individuals in favour of social cooperation.  There are more subtle ways to initiate reciprocity than doing something nice for someone so you can expect something in return.
A more subtle form of reciprocity is the idea of reciprocal concessions in which the applicant lowers his or her initial application, which instead allows the applicant to accept a second application. Under the reciprocity rule, we have an obligation to give in to someone who has made a concession to us.  That is, if a person starts asking for something big and you refuse, you feel compelled to accept their small request, even though you may not be interested in any of the things they offer. . . .