People learn by moving from the known to the unknown. An analogy inherently proposes the idea, that if things agree in some respect they probably agree in others. Secular prophecy uses knowledge of the past and the present to predict the future. The past is the womb of the present and the present is the History of the Future. As the past may be interpreted and the present may be misunderstood the future is never certain. Platitudes may outline the shape of something, but they can never define anything.