What is the Authorial purpose in The Reluctant Fundamentalist?

One of the purposes, I believe, is to encourage the reader
to think about stereotypes and their function in society. We are asked to look at ways
in which we might be adhering to negative stereotypes or building our lives around
seemingly positive stereotypes only to find out that things are not what they appear to
be. This is certainly true of Changez who initially falls prey to the promise of magical
meritocracy only to come to realise that there is no magic at all. Hamid challenges the
reader to think deeply about aspects of stereotyping and to form our own individual
conclusions.