In Chapter 13 of his book "After God:The Future of Religion", Cupitt documents how the gradual disintegration of religious belief and supernatural views of the world has led to the growth of naturalism. For Cupitt, the abandonment of religion has also been aided by technological advances and the growing number of sources of authority. Finally, he goes on to argue that many people still hold on to their religious beliefs purely out of 'ethnic loyalty', and that, despite people's best efforts, religion will continue to liquidate.