Teachings are not the truth, but a catalyst to aid in approach to the truth. There are limitations to be found in every verbal formulation and in those who give them. Good teachings have merit as general guidelines and as stimulus to thinking and reflection. Also, even in a great teaching, the specifics and their application to any time and space involve much ambiguity and vagueness. So, in this sense, we are always on our own, in other words a good teaching or teacher stimulates independent thought.