Among the most primitive fantasies is that of union with another individual, an undoing of the original separation from the breast. Fantasies of somatic union and separation are expressed in many ways—by ideas about birth and death, myths, fantasies of inclusion, identification, immersion, and emergence. Representations of such linkage with mother or others include pipes, electric cords, tubes, and clasped hands. When knowledge of the umbilical cord is acquired in later years, it is used as a paradigm to label and screen linkage fantasies which existed much earlier. 'It is not necessary to make the incredible assumption that there is infantile knowledge of the umbilical cord.'