Reciprocity in evolutionary biology refers to mechanisms whereby the evolution of cooperative or altruistic behaviour may be favoured by the probability of future mutual interactions.
[9] The benefit-to-cost ratio must exceed the average number of people, k, per individual: Recent work [10] shows that the benefit-to-cost ratio must exceed the mean degree of nearest neighbors, ⟨knn⟩: An ethical concept known as "generalized reciprocity" holds that people should show kindness to others without anticipating prompt return favors.
When people engage in this type of reciprocity, they give without thinking about what they could get back, showing that they care about the general welfare of the community.
Therefore, generalized reciprocity is evidence of the persistent value of selfless contributions in building strong, cohesive communities.
Adopting this idea means being committed to the timeless values of giving and having faith in the natural flow of advantages for both parties.