"[N]o matter how much effort we expend, not everything is potentially within our control, not even our own bodies and minds. [...] The body - or, to use more cutting-edge language, the "mindbody" - is not a smooth-running machine in which each part obediently performs its tasks for the benefits of the common good. It is at best a confederation of parts - cells, tissues, even thought patterns - that may seek to advance their own agendas, whether or not they are destructive of the whole."