The neurobiological and naturally selective roots of autism revolve around the testosterone effect, the extreme male brain theory, and various post-hoc hypotheses that state the advantages of neurodivergence in the ancestral plain. Then reverting to a modern-day context, testosterone and lower-functioning autism cases are on the decline, however, neurodivergence as a whole is on the increase. Papers on the inbreeding of hominid ancestors explain the overlap of neurodivergent genes such as ADHD and autism. Then it comes to an ultimatum that without the inhibition of testosterone, autism returns to its naturally selective roots in an information-based, individualistic society and shows that we as a society must become far more educated and understanding of neurodivergence as it will continue to become increasingly common as we are all integrated into the spectrum.