The object of vipassana practice is to learn to see the truths of impermanence, unsatisfactoriness, and selflessness of phenomena. We think we are doing this already, but that is an illusion. It comes from the fact that we are paying so little attention to the ongoing surge of our own life experiences that we might just as well be asleep. We are simply not paying enough attention to notice that we are not paying attention. It is another catch-22.