Back in Britain, where Saleem was no longer in a religiously restricted environment and had free access to books, media and television, her earlier doubts resurfaced. She started studying sociology, which examined religion from several new perspectives such as feminism and Marxism, and first exposed her to the concept that religions could serve as a means of social control. In the library, she came across Richard Dawkins' book The God Delusion, which first exposed her to the idea that God could be a human delusion and might not actually exist,[1] and the theory of evolution, which she did not understand, and decided to spend a great deal of time on studying further.