unlike traditional therapies, effective change, and/or learning at an unconscious level, are emphasised over and above conscious understanding. According to NLP, change does not always require interpretation and analysis, it requires development of ones map of beliefs about the world and oneself, so that what was previously inaccessible becomes possible, and this can be effected in very many ways. Thus according to Haley, Erickson was notable amongst psychiatrists, because he would respond to metaphor with other metaphors, rather than by attempting to "interpret".
http://en.wikipedia.org/wiki/Principles_of_NLP