I'll try to come back to the issues explored in this book from a different angle soon, but here goes a brief summary.
People often worry about the mingling of social and economic transactions. They feel that the market erodes moral values and personal relationships; putting a dollar value on something renders it
not sacred and essentially cheap (hence the inappropriateness of paying friends for small favors, and the taboo against prostitution). They also feel that personal relationships can contaminate professional settings -- for example, it is improper for certain personal boundaries to be crossed by doctors and lawyers with regards to their clients. As a result people intuitively arrive at a "hostile worlds, separate spheres" doctrine -- economic and social transactions are best left separate, and only trouble comes from mixing them.
Zelizer's book is an effort to move past this dichotomy. She notes that it is simply not the case that money and intimacy never go together -- in fact, "no household lasts long without extensive economic interaction among its members... money cohabits regularly with intimacy, and even sustains it."
The thrust of her argument is as follows:
People engage routinely in the process of differentiating meaningful social relations, including their most intimate ties. They undertake relational work. Among other markers, they use different payment systems -- media -- to create, define, affirm, challenge, or overturn such distinctions... Such distinctions apply to intimate social relations... relational work becomes even more delicate and consequential when intimacy comes into play.., people manage to integrate money transfers into larger webs of mutual obligations without destroying the social ties involved.
She argues that hostile worlds arguments are popular because:
People regularly invoke hostile worlds doctrines when they are trying to establish or maintain boundaries between intimate relations that might easily be confused... participants often employ hostile worlds practices, using forms of speech, body language, clothing, uniforms, and spatial locations to signify whether the relationship between this man and this woman is boss-secretary, husband-wife, patron-prostitute... They thus prevent confusion with the wrong relationship.
I'll come back to the general themes of the book much more soon.