People use the rational judgment to know things and constantly accumulate knowledge, finally under proper ethics system to build their own country and get rid of the primitive society.
Now we always use the old knowledge to know new things, it will be in this case of the unconscious that we all believe our rational judgment is absolutely reliable. But the rational judgment has nothing to do with the truth, it is only relative to the known knowledge. Time flies, knowledge is updated in the case of no accident. We should not be afraid to make mistakes, not to change our inherent model of thinking and behaviors. It is often necessary to make such innovative solution required in the developing era as complete as possible, the key is to find out a concrete analysis of real changes in our rational judgment.