Ancient societies lacked knowledge of the mechanisms by which the egg selected, yet they recognized that selection occurred. This process was attributed to the Goddess and interpreted as acceptance of her will. Practices such as totemic group sex and, subsequently, the Orgia served as mechanisms that provided female eggs with a diverse pool of genetic material for selection.
The social structure articulated in this narrative mirrors the structural reciprocity observed among the bricks of the Nubian arch or vault.