The theory says that the blood lineage, such as siblings or parents are sincere, Because of the benefits of action unrequited is good to those who do. We help each other because these people"s bone. Or even who inquiry to our family. From the words of the Hamilton. "If the action to the public can be hereditary, relatives will have this behavior, Because relatives is the blood itself" (Hamilton. 1964: 38). From this perspective shows that we can get a compliment from relatives than outsiders such as we the people in the family we do in very high position.? But it depends on the direction of family as you succeed in doing business of the parents, relatives together own the business side. Instead of working with others, or a wealthy family and control of its industry and not to grant or benefit to others.? To assist with the people who have the blood really only. All save one of their own.