This document discusses several theories about whether religion is declining or changing in postmodern society. It examines the ideas of Grace Davie who argues that religion has become more privatized and people can have religious beliefs without regular church attendance. It also looks at theories from Danielle Hervieu-Leger about cultural amnesia around religion and how people have become "spiritual shoppers." Finally, it analyzes religious market theory from Stark and Bainbridge that views religion meeting human needs and declining churches being replaced by new sects and cults, similar to business competition in a free market. The document provides criticisms of each theory and examples used to support or question the different perspectives on religious trends.