Sociobiological research was at the time particularly controversial with regard to its application to humans. The theory established a scientific argument for rejecting the common doctrine of tabula rasa, which holds that human beings are born without any innate mental content and that culture functions to increase human knowledge and aid in survival and success. In the final chapter of the book "Sociobiology" Wilson argues that the human mind is shaped as much by genetic inheritance as it is by culture if not more. There are, Wilson suggests in the chapter, limits on just how much influence social and environmental factors can have in altering human behavior.