The family is built on one basic idea which is so powerful that legal rules are organised around it as spontanely. But if the paradigm is changing, then all the rules change with the strength of the evidence.

However, in the 1970s, we changed paradigm. Previously, for millennia, the basic idea was the family as a group. Depending on the time or period, the group has varied in its contours, squares and powers granted to individual members, but the idea of group was acquired. Family was a group which was a part of the social group, kept by the State.

From the 1970s, the family becomes the developed project done by a free and independent person. This project designed by a person wishing to build family that suits him or her will result in the fact that the individual meets other individuals whose family project crosses his or her. Contract becomes the perfect tool for these home-made families This desires adjustment corresponds to the market model. Concretely, market of ideal family provides services for satisfaction of various projects, all legitimate as expression of desir. The sufficient link between individuals  is affection and will, the center is the child. The market offers new perspectives, such as ideal partner and even more perfect child, becoming jewel. The idea of ​​Market has triumphed.