In Dianetics, you learn that the embryo is capable of recording engrams immediately after conception. How these records are made, since the embryo does not develop sense organs until late in its history, remains a profound mystery. They take place on a cellular level, involving some unknown type of change within the protoplasm. According to Hubbard, life in the womb is far from Paradise. "Mama sneezes, baby gets knocked 'unconscious.' Mama runs lightly and blithely into a table and baby gets its head stoved in. Mama has constipation and baby, in the anxious effort, gets squashed. Papa becomes passionate and baby has the sensation of being put into a running washing machine. Mama gets hysterical, baby gets an engram. Papa hits Mama, baby gets an engram. Junior bounces on Mama's lap, baby gets an engram. And so it goes."
It is also very noisy in the uterus. "Intestinal squeaks and groans, flowing water, belches, flatulation and other body activities of the mother produce a continual sound.... When mother takes quinine a high ringing noise may come into being in the foetal ears as well as her own -- a ringing which will carry through a person's whole life." Moreover, the uterus is very tight in later prenatal life. If Mama has high blood pressure, "it is extremely horrible in the womb."
In addition to being knocked out by blows, coughs, sneezes, vomiting, and so on, the poor embryo can also be rendered unconscious by the violent pressures of the sex act, and -- understandably -- by attempted abortions. Throughout his book, Hubbard reveals a deep-seated hatred of women, but this hatred is most clearly indicated by his obsession with what dianeticians call "AA" -- attempted abortion. When Hubbard's Mamas are not getting kicked in the stomach by their husbands or having affairs with lovers, they are preoccupied with AA -- usually by means of knitting needles. "Twenty or thirty abortion attempts are not uncommon in the aberee," Hubbard writes, "and in every attempt the child could have been pierced through the body or brain." These experiences naturally produce the worst engrams because they are usually accompanied by verbal expressions charged with emotion. Since all these remarks are recorded literally by the embryo, they create engrams capable of causing great damage in later life when they are fed as data to the conscious mind.