"The females began to reject the idea of raising their offspring, who in turn learned to behave in a society which had broken down. The delicate bonds of social behaviour broken, these children would never learn courtship or maternality. Young males would ignore females of their age, obsessing instead over their own appearance. With society in collapse, birth rates plummeted. By the time the end was in sight over half of the youngest generations were marked by these patterns of behaviour. They would have no offspring of their own; the colony would die"